University of Ljubljana...Lafaye, 2014) were analyzed. Furthermore, in 2012, the first study with a...
Transcript of University of Ljubljana...Lafaye, 2014) were analyzed. Furthermore, in 2012, the first study with a...
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University of Ljubljana
Faculty of Sport
ANALYSIS OF LOAD AND EFFORT IN
SMALL-SIDED-HANDBALL GAMES
(Analiza obremenitve in napora rokometašev pri
prirejenih igrah glede na prostor in število igralcev)
Doctoral thesis
Promoter: Author:
Associate Professor Marko Šibila, Ph. D. Matteo Corvino
Co-promoter:
Associate Professor Antonio Tessitore, Ph. D.
Ljubljana, 2016
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I declare that the scientific study entitled “Analysis of load and effort in small-sided-handball
games” is the result of my scientific research.
Matteo Corvino
Matteo Corvino
ANALYSIS OF LOAD AND EFFORT IN SMALL-SIDED-HANDBALL GAMES
University of Ljubljana, Faculty of Sport, Ljubljana, 2016
Pages 119, tabels: 25, figures: 22, references: 166
ANALIZA OBREMENITVE IN NAPORA ROKOMETAŠEV PRI PRIREJENIH IGRAH
GLEDE NA PROSTOR IN ŠTEVILO IGRALCEV
Univerza v Ljubljani, Fakulteta za šport, Ljubljana, 2016
Strani 119, tabele: 25, slike: 22, viri: 166
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Keywords: handball; sport-specific training; video analysis; Global Positioning System
(GPS);
ANALYSIS OF LOAD AND EFFORT IN SMALL-SIDED-HANDBALL GAMES
Matteo Corvino
ABSTRACT
Objectives. The aim of this study was to investigate the effect of three different court
dimensions on the internal and external load during two types of small-sided handball games.
Methods. Eight male amateur handball players took part in this study and participated in
three different 8-min 3vs3 (plus goalkeepers) and three different 8-min 4vs4 (plus
goalkeepers) small-sided handball games (each repeated twice). The three court dimensions
for both drills, were 12×24m, 30×15m and 32×16m. Through Global Positioning System
devices (SPI pro elite 15 Hz, GPSports) and video analysis, the following parameters were
recorded: cyclic and acyclic movements (distance covered and number of technical actions
executed), heart rate, and rating of perceived exertion (RPE).
Results. – Total distance travelled increased with court dimensions in both the experimental
conditions. The analysis of distance covered in the four speed zones (0–1.4 m/s; 1.4–3.4 m/s;
3.4–5.2 m/s; >5.2 m/s) highlighted substantial differences: during 3vs3, playing with the
30×15m court in comparison to the 24×12m, the players covered less distance in the first
speed zone and more distance in the second and third speed zones (p<0.05; moderate ES).
Statistical differences were also found between the 3vs3 played on the 24×12m courts respect
to the 32×16m one: the players covered more distance in the second and third speed zones
with the 32×16m court in comparison to the 24×12m (p<0.05; moderate ES). Similar trend
was found during the 4vs4 drills. In these experimental conditions, the pitch dimensions
24×12m players achieved significantly higher value of distances in the first speed class and
significantly lower values in the third speed class compared with the matches played on the
courts of the other two dimensions (p<0.05; moderate ES). There was no significant effect of
court dimensions for both drills on the technical parameters (number of team actions, passes,
shoots, pistons movements toward goal and defensive activities), the number of specific
handball jumps and changes of direction, and the time spent in the different heart rate zones.
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The rating of perceived exertion was significantly higher during the 3vs3 with the 32×16m
court compared with the 24×12m one (p<0.05; large ES). In matches with a greater number of
players (4vs4), court dimension had no significant effect on the assessment of perceived
exertion (RPE). With the comparison of the data obtained on the drills in the two
experimental conditions (3vs3 and 4vs4) in all three court dimensions, it is found that there is
no significant difference in the total distance travelled. Significant differences were shown in
the third speed class, where the higher value was achieved in the all court dimension of the
4vs4 drill (p<0.05; moderate ES). There was no significant difference in the frequency of
occurrence of the technical and tactical elements and specific handball jumps, changes of
direction; the effort assessment (heart rate and perceived exertion) did not underlined
statistical differences between the 3vs3 and 4vs4 small-sided handball games in all the
experimental conditions.
Conclusions. Our findings indicate that changing court dimensions during small-sided
handball games can be used to manipulate both external and internal loads on the players.
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CONTENT
1. INTRODUCTION..........................................................................................................8
1.1 Handball story.................................................................................................................8
1.2 Handball performance.....................................................................................................9
1.3 Male handball player’s characteristics..........................................................................12
1.4 Small-sided games in soccer.........................................................................................15
1.5 Small-sided games in rugby..........................................................................................17
1.6 Small-sided games in basketball...................................................................................18
1.7 Small-sided games in other team sports........................................................................20
1.8 Small-sided games vs. classic running drills.................................................................21
1.9 Small-sided games in handball......................................................................................23
2. TOPIC AND PROBLEM IDENTIFICATION...........................................................27
3. HYPOTHESIS..............................................................................................................27
4. METHODS...................................................................................................................29
4.1 Sample description........................................................................................................29
4.2 Parameters.....................................................................................................................29
4.3 Experimental procedures...............................................................................................32
4.4 Sample evaluation.........................................................................................................40
4.5 Statistical analysis.........................................................................................................44
5. RESULTS.....................................................................................................................46
5.1 Sample assessment........................................................................................................46
5.2 Analysis of load and effort in 3vs3 small sided games................................................48
5.3 Analysis of load and effort in 4vs4 small sided games................................................51
5.4 Analysis of load and effort in 3vs3 compared to 4vs4 small sided games...................53
6. DISCUSSION..............................................................................................................55
6.1 Sample analysis.............................................................................................................55
6.2 3vs3 small-sided handball games..................................................................................56
6.3 4vs4 small-sided handball games..................................................................................62
6.4 Comparison of the two type of small-sided handball games........................................67
7. CONCLUSION............................................................................................................72
7.1 Conclusions and practical implications.........................................................................72
7.2 New relevant findings...................................................................................................74
7.3 Proposals for further researches and views for the future............................................76
8. REFERENCES.............................................................................................................78
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9. OBSEŽEN POVZETEK V SLOVENŠČINI..............................................................105
9.1 Uvod.........................................................................................................................105
9.2 Cilji in hipoteze........……………………………………………………………….107
9.3 Metode dela..............................................................................................................108
9.4 Rezultati…………..………………………………………………………………..110
9.5 Razprava………….………………………………………………………………..117
9.6 Zaključek…………...………………………………………………………………118
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1. INTRODUCTION
1.1 Handball story
Handball is nowadays one of the most practiced sports in Europe. With a great geographic
differentiation, handball is becoming the second sport in Europe after football (soccer). The
great development of this sport has originated in Nordic countries (like Denmark, Sweden
and Germany), even if also countries as France, Hungary, Spain, Croatia, Romania, Slovenia
and Poland have professional championships since many years.
Parallel with the growth of handball in Europe, also the interest of sport science community
about this sport increased. From a scientific point of view, until the 90’s there was a lack of
specific knowledge concerning several aspects of handball. For instance, the training was
mainly based on coaches experiences (empirical level) with a conspicuous transfer of
information by similar team sports like soccer and basketball. In fact, handball coaches were
used to adopt the great number of scientific literature published on conditioning training
issues in soccer and basketball to build their drills, training sessions and long term planning.
On the other hand they were also frequently using information from the track and field
disciplines which were somehow connected to handball to develop explosive and elastic
strength (jump and throw power), sprint abilities, aerobic and anaerobic endurance.
Hence, scientific research on Handball start to appear in peer-reviewed journals during the
80s, with most of the studies focused on injury issues. In those years the only exception from
this trend of interest on prevention and treatment of injuries was the study of Delamarch,
Gratas, Beillot, Dassonville, Rochcongar and Lessard (1987), published on the International
Journal of Sports Medicine about the assessment of the anaerobic metabolism of handball
players and a first “physiological” analysis provided during a game. After years of research
focused only of traumatological aspects, in 1996 a new study on handball performance
investigated the heart rate of male players during matches (Loftin, Anderson, Lytton, Pittman
& Warren, 1996). Furthermore, this study showed also data about the maximal oxygen
consumption measured by means of an indirect method. In 1997, the first technical/tactical
study was published on a scientific journal: Apitzsch and Liu (1997) investigated the
correlation between field dependence-independence and handball shooting by Swedish
national male handball players. The authors analyzed all the Sweden male national team
matches at the ’94 European Handball Championship; in particular, field-goal shooting
attempts and shooting efficiency of each players were calculated. The results of this study
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were not statistically significant and the experimental approach had limitations in the sample
dimension and homogeneity. The study of Apitzsch and Liu of 1997 was followed along the
years by other studies focused on the analysis of handball performance by a tactical point of
view: in particular the influence of the attack tactics on the match result (Rogulj, Shroj V. &
Shroj, L., 2004; Srhoj, Rogulj, Padovan & Katic, 2001), the strategies of the goalkeeper
(Gutierrez-Davila, Rojas, Ortega, Campos & Parraga, 2011), the handball players trajectories
(Barros, Menezes, Russomanno, Misuta, Brandão, Figueroa, Leite & Goldenstein, 2011), the
handball penalty shot (Bourne, Bennett, Haye & Williams, 2011), the offensive efficiency
(Moncef, Dagbaji, Abdallah & Mohamed, 2011), the effects of game location, period and
quality of opposition (Olivera, Gómez & Sampaio, 2012), the home advantages (Gutiérrez
Aguilar, Saavedra García & Fernández Romero, 2012) and the defensive system (Debanne &
Lafaye, 2014) were analyzed. Furthermore, in 2012, the first study with a complete
technical/tactical match analysis in handball, was published on a scientific journal (Bilge,
2012): average number of attacks, attack efficiency, shot efficiency, average fast break goals
per game, fast break efficiency, goalkeeper efficiency, average goalkeeper saves per game,
average number of exposures to foul per game, and differences in the ratios of position throws
(wing, pivot, back court, break-through, fast break, and 7-meter) to all goals were examined.
At the end of 90s, following the trend of other team sports researches, studies on handball
training analysis starts to develop. In 1997, Jensen, Jacobsen, Hetland and Tveit investigated
for the first time the effect of combined strength and sprint training on maximal oxygen
uptake, isometric strength and sprint performance in female elite handball players during a
season. After the study of Jensen et al. (1997), many others researchers focused on several
aspects of handball training, as strength (Carvalho, Mourão & Abade, 2014; Chelly,
Hermassi, Aouadi & Shephard, 2014; Cherif, Said, Chaatani, Nejlaoui, Gomri & Abdallah,
2012; Gorostiaga, Izquierdo, Iturralde, Ruesta & Ibáñez, 1999; Hermassi, Chelly, Fathloun
& Shephard, 2010; Hermassi, Chelly, Tabka, Shephard & Chamari, 2011; Hermassi, van den
Tillaar, Khlifa, Chelly & Chamari, 2015; Ignjatovic, Markovic & Radovanovic, 2012; Jansen,
Schmidtbleicher & Cabri, 2007; Luteberget, Raastad, Seynnes & Spencer, 2015; Marques
& González-Badillo, 2006; Saeterbakken, van den Tillaar & Seiler, 2011; Tyrdal & Pettersen,
1998; Wagner & Müller, 2008), endurance (Bucheit, Laursen, Kuhnle, Ruch, Renaud
& Ahmaidi, 2009a; Bucheit, Lepretre, Behaegel, Millet, Cuvelier & Ahmaidi, 2009b; Bucheit,
Mendez-Villanueva, Quod, Quesnel & Ahmaidi, 2010; Iacono, Eliakim & Meckel, 2015) and
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stretching (Zakas, A., Vergou, Grammatikopoulou, Zakas, N., Sentelidis & Vamvakoudis,
2003) ones.
The development of always new technology for performance analysis in sport, has determined
an increase of the number of studies focused on notational and time motion analyses in
handball (and sports in general). These new technology allowed not only the classical
physiological analysis of the match (i.e. Heart Rate and Lactate) but also including aspects
related to the different movements and distances covered by players. It was 2002 when
appeared the first study on match analysis in handball (Pers, Bon, Kovacic, Šibila & Dezman,
2002) with an analysis of movements speed and distance covered. The authors found that
players covered on average a distance of 4800 m during the analyzed matches; sprints (speed
>5.2 m/s) amounted to 7% of the playing time, 25% of playing time was spent in fast running
(speed 5.2<3.0 m/s), 31% in slow running (speed 3.0<1.4) and 37% in walking or standing
still (speed <1.4m/s). After this study, a lot of researchers investigated the tactical, technical,
and physical aspects of handball by means of video-match-analysis (Bilge, 2012; Gutiérrez
Aguilar et al., 2012; Gutiérrez & Ruiz, 2013; Karcher & Buchheit, 2014;
Krüger, Pilat, Uckert, Frech & Mooren, 2014; Manchado, Tortosa-Martínez, Vila, Ferragut
& Platen, 2013; Michalsik & Aagaard, 2014; Michalsik, Madsen, & Aagaard, 2014a;
Michalsik, Madsen & Aagaard, 2014b; Michalsik & Aagaard, 2015; Michalsik, Madsen &
Aagaard 2015a; Michalsik, Aagaard & Madsen, 2015b; Moncef, Dagbaji, Abdallah
& Mohamed, 2011; Oliveira, Gómez & Sampaio, 2012; Póvoas,
Seabra, Ascensão, Magalhães, Soares & Rebelo, 2012; Póvoas, Ascensão, Magalhães,
Seabra, Krustrup, Soares & Rebelo, 2014a; Póvoas, Ascensão, Magalhães,
Seabra, Krustrup, Soares & Rebelo, 2014b; Wagner, Finkenzeller, Würth & von Duvillard,
2014).
In the last 10 years, a lot of studies have focused their attention also on the physiological and
anthropometric characteristics of handball players (Bayios, Anastasopoulou, Sioudris
& Boudolos, 2001; Chaouachi, Brughelli, Levin, Boudhina, Cronin & Chamari, 2009; Chelly,
Hermassi & Shephard, 2010; Garcia-Tabar, Llodio, Sánchez-Medina, Ruesta, Ibañez
& Gorostiaga, 2015; Ghobadi, Rajabi, Farzad, Bayati & Jeffreys, 2013; González-Ravé,
Juárez, Rubio-Arias, Clemente-Suarez, Martinez-Valencia & Abian-Vicen, 2014; Gorostiaga,
Granados, Ibáñez & Izquierdo, 2005; Granados, Izquierdo, Ibañez, Bonnabau & Gorostiaga,
2007; Hasan, Reilly, Cable & Ramadan, 2007; Haugen, Tønnessen & Seiler, 2014; Krüger et
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al., 2014; Massuça, Fragoso & Teles, 2014; Massuça, Branco, Miarka & Fragoso, 2015;
Michalsik et al., 2014a; Michalsik et al., 2014b; Milanese, Piscitelli, Lampis & Zancanaro,
2011; Nikolaidis & Ingebrigtsen, 2013; Nikolaidis, Ingebrigtsen, Póvoas, Moss & Torres-
Luque, 2015; Rannou, Prioux, Zouhal, Gratas-Delamarche & Delamarche, 2001; Rogulj,
Srhoj, V., Nazor, Srhoj, L. & Cavala, 2005; Sibila & Pori, 2009; Sporis, Vuleta, D., Vuleta, D.
Jr. & Milanović, 2010; Srhoj, Marinovic & Rogulj, 2002; Vila,
Manchado, Rodriguez, Abraldes, Alcaraz & Ferragut, 2012). In particular some authors
investigated also the differences between players, determined by their playing positions.
These studies have been very important for the development of the concept of specific
training and individualization of load in handball.
1.2 Handball performance
Handball is one of the fastest team sports, characterized by repeated jumps, sprints, changes
in direction, body contact at high speed, and specific technical movement patterns occurring
in response to the varying tactical situations of the game (Karcher & Buchheit, 2014). Being
handball a sport composed by high-intensity actions in alternation with periods of lower
activity, the players’ performance is strongly influenced by the anaerobic glycolytic and
aerobic systems.
The anaerobic glycolytic demands of an handball match has been investigated in some studies
since 2000. Unfortunately, the only way that researchers had to understand the contribution to
the performance of the players’ energetic system, was the measurements of blood lactate,
which has notoriously a lot of limitations, and the different results emerged from the studies
were probably explained by these difficulties. The study of Póvoas (2009) on Portuguese elite
teams, reported mean values of blood lactate of 4.2 ± 2 (range 1.6– 8.6) mmol.l-1
and 3.1 ± 1.8
(1.3–8.4) mmol.l-1
during the first and second halves, respectively. Other studies that were
focused on the measurement of blood lactate at the end of the match, found values of 4.8 ±
1.9 mmol.l-1
in Danish male elite players (Michalsik et al., 2014b) and 8.3 ± 0.9 mmol.l-1
in
adolescent Tunisian players (Chelly, Hermassi, Aouadi, Khalifa, Van den Tillaar, Chamari
& Shephard, 2011). The great limitation of the analysis of blood lactate data is that these are
largely influenced by the activity that players have performed during the last 3-5 minutes
before the sampling. For instance, the occurrence of a great number of high intensity activity
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in this period could modify the results of the test, overestimating the real value. Furthermore,
players with different roles (wings, pivot and backcourt) could probably report different blood
lactate values due to their different demands of the match.
Regarding the aerobic demands of handball performance, there is a general difficulty to
analyse this aspect. Indeed, the best way to analyse the contribution of aerobic system to the
performance of any sports, is the analysis of the oxygen consumption by means of a
metabolimeter, and the use of this tools during official handball match is not allowed (where
it could be during friendly ones). In the majority of the studies published on this aspects, the
aerobic demands were estimated from heart rate (HR) recordings and the associated HR/VO2
relationship established previously during an incremental test (Karcher & Buchheit, 2014).
The estimated average VO2 reached during a game ranged between 70.9 ± 6% (Michalsik et
al., 2014b), 71 ± 6% (Srhoj et al., 2002) and 74 ± 10% (45–92%) (Póvoas, 2009) % of
VO2max.
Analysing directly the HR data, the study of Póvoas, Seabra, Ascensão, Magalhães, Soares
and Rebelo (2012), showed that during handball matches, the players effective mean HR
(considering only the effective time spent by the players on the field) is around 82 ± 9.3 % of
HRmax. Differently, when the authors of this study considered the total mean HR (with also the
time spent by the players on the bench), the values are 72 ± 16.7 %. The successive study of
Kruger et al., (2013), analyzed the HR of handball players during an entire match, dividing
the results in the different roles. Findings of this study underlined the significant different
relative HR during the match for wings and back position (respectively 85.2 ± 5.8 % and 86.4
± 1.8 % of HRmax) respect to the pivot position (83.4 ± 1.0 % of HRmax).
Taken together with the similar blood lactate levels, the lower HR values observed in
handball compared with basketball or soccer suggest that handball may put a relatively
greater emphasis on anaerobic glycolytic energy (Karcher & Buchheit, 2014).
1.3 Male handball player’s characteristics.
Starting from the first study in 2001 of Rannou et al., the physical and physiological
characteristics of handball players were study in various researches. In the majority of this
studies, the first measures investigated were the anthropometric characteristics: height, body
mass, Body Mass Index (BMI) (Ghobadi et al., 2013; Haugen et al. 2014; Kruger et al. 2013;
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Massuça et al., 2015; Michalsik et al., 2014; Srhoj et al., 2002) and percentage of body fat
(Chaouachi et al., 2009; Chelly et al. 2010; Gorostiaga et al., 2005; Massuça et al., 2014;
Nikolaidis & Ingebrigtsen, 2013; Nikolaidis et al., 2015; Sibila and Pori, 2009; Sporis et al.,
2010) were deeply analyzed. An interesting study in 2013 (Ghobadi et al.), analyzed the
height, weight and BMI of all the players involved in the 2013 Men’s Handball World
Championship (409 handball players in 24 handball teams). The authors found the following
mean values: height of 190.1 ± 6.8 Cm, body mass of 92.4 ± 9.8 Kg and BMI of 25.5 ± 2.1.
The studies focused on the anthropometric characteristics of handball players, that detected
also the percentage of body fat, found values from 10.5 ± 5.5% (Massuça et al. 2014) to 18.1
± 3.8% Nikolaidis et al., 2015). Furthermore, some researchers divided their results into the
different playing positions, underlined greater values for height and body mass for back
players and pivot respect to the wings (Haugen et al. 2014; Kruger et al. 2013; Massuça et al.,
2015; Michalsik et al., 2014; Nikolaidis et al., 2015; Sibila & Pori, 2009; Sporis et al., 2010;
Srhoj et al., 2002). After the anthropometric characteristics of height, body mass, BMI and
percentage of body fat, some authors analyzed also the physiological characteristics of
handball players. The most investigated physiological characteristics of handball players were
VO2max (Chaouachi et al., 2009; Michalsik et al., 2014; Rannou et al., 2001; Sporis et al.,
2010), HRmax (Kruger et al., 2013; Sporis et al., 2010) and maximal anaerobic power (Chelly
et al. 2010; Nikolaidis & Ingebrigtsen, 2013; Nikolaidis et al., 2015; Rannou et al., 2001).
From the findings of these studies, emerges the following physiological profile of handball
player: the VO2max ranges from 52.8 ± 5.5 ml*kg*min-1
(Chaouachi et al. 2009) to 58.7 ± 0.9
ml*kg*min-1
(Rannou et al., 2001); the HRmax reached during exhaustive incremental
endurance test ranges from 191 ± 8 bpm (Sporis et al. 2010) to 194 ± 5 bpm (Kruger et al.
2013); the maximal anaerobic power reached during test ranges from 898 ± 220 Watt (Chelly
et al. 2010) to 1172 ± 47 Watt (Rannou et al., 2001). Some authors, in addition to analyze the
anthropometric and physiological characteristics of handball players, focused their researches
on some performance parameters like speed, upper and lower limb strength, jump ability and
flexibility of handball players. In the great part of these studies, the speed of handball players
was assessed by the administration of a 30m maximal sprint test (Chaouachi et al., 2009;
Kruger et al., 2013; Massuça et al. 2014; Massuça et al., 2015; Michalsik et al., 2014): the
handball players mean time during this test varies from 4.22 ± 0.1 sec. (Kruger et al. 2013) to
4.48 ± 0.3 sec. (Massuça et al., 2015). Other than speed of handball players, some authors
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were also interested in analyzing the strength of handball players. Different methods to
assesses this characteristic of handball players were applied: the measurement of handgrip
strength (Massuça et al. 2014; Massuça et al., 2015; Nikolaidis et al., 2015), the one maximal
repetition (1RM) bench press and squat exercises (Chaouachi et al., 2009; Chelly et al. 2010;
Gorostiaga et al., 2005; Haugen et al. 2014), isokinetic tests (Bayios et al., 2001; González-
Ravé et al., 2014) and the indirect method of throwing velocity measurement (Chaouachi et
al., 2009; Chelly et al. 2010; Haugen et al. 2014; Kruger et al., 2013; Michalsik et al., 2014).
The results of the previous mentioned studies on the strength characteristics of the handball
players are resume in the Table 1.
Table 1
Main Strength Characteristics of Handball Players
Characteristic Values (range) Authors
Handgrip 52.6 ± 8.3 - 116.1 ± 14.8 kg Massuça et al. 2015;
Nikolaidis et al., 2015;
Bench press (1RM) 88.5 ± 10.5 - 106.9 ± 11.6 kg Chelly et al. 2010;
Gorostiaga et al., 2005;
Squat (1RM) 131 ± 22 - 177.7 ± 27.5 kg Haugen et al. 2014;
Chaouachi et al., 2009;
Throwing velocity 23.0 ± 1.8 - 28.0 ± 1.5 m/s Chelly et al. 2010;
Haugen et al. 2014;
Another indirect method to assess the strength of the lower limb is the jump ability
evaluation. A lot of researchers measured the height of three types of jumps in handball
players: Squat Jump (SJ), Counter-Movement Jump (CMJ) and CMJ with free arms
movements (Haugen et al. 2014; Kruger et al., 2013; Massuça et al. 2014; Massuça et al.,
2015; Michalsik et al., 2014; Nikolaidis & Ingebrigtsen, 2013; Nikolaidis et al., 2015). The
jump’s height values found by these studies ranges from 33.9 ± 4.8 to 36.6 ± 5.0 cm for the SJ
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(Nikolaidis et al., 2015 - Massuça et al. 2014), from 35.9 ± 5.3 to 43.9 ± 6.0 cm for the CMJ
(Nikolaidis et al., 2015 - Michalsik et al., 2014) and from 43.6 ± 5.6 to 47.1 ± 5.1 cm for the
CMJ with free arms movement (Nikolaidis et al., 2015 - Kruger et al., 2013).
The last handball players characteristic investigated by researchers was the flexibility, by the
administration of the sit and reach test (Nikolaidis & Ingebrigtsen, 2013; Nikolaidis et al.,
2015). The values found by these two study were 21.8 ± 8.7 cm and 23.1 ± 9.1 cm in the sit
and reach test.
1.4 Small-sided games in soccer
In team sports as soccer and rugby, with the aim of developing a specific capacity of players
to perform endurance training related to the game demands, training methods that use the ball
(i.e. small sided games and skill-based conditioning games) have been extensively studied. In
particular, the team sport with a larger number of studies focused on small-sided games
(SSG’s) is soccer. In this sport, one of the first studies on the use of SSG’s was that of Platt,
Maxwell, Horn, Williams and Reilly, (2001) about physiological and technical analysis of
3vs3 and 5vs5 during youth matches.
The scientific literature published during the last fifteen years has reported a high impact of
the SSG’s through the analysis of HR, Rate of Perceived Exertion (RPE) and blood lactate
accumulation. The findings of these studies showed that during a bout of SSG’s, soccer
players were exposed to average heart rates from 82 to 91% of heart rate max (Abrantes,
Nunes, Maçãs, Leite & Sampaio, 2012; Ade, Harley & Bradley, 2014; Aguiar, Botelho, Lago,
Maças & Sampaio 2012; Aguiar, Botelho, Gonçalves & Sampaio, 2013; Aroso, Rebelo &
Gomes-Pereira, 2004; Brandes, Heitmann & Müller, 2012; Campos-Vazquez, Mendez-
Villanueva, Gonzalez-Jurado, León-Prados, Santalla & Suarez-Arrones, 2014; Casamichana,
Suarez-Arrones, Castellano & San Román-Quintana, 2014; Clemente, Wong del P., Martins
& Mendes, 2014; Coutts, Rampinini, Marcora, Castagna & Impellizzeri, 2009; Da Silva,
Impellizzeri, Natali, De Lima, Bara-Filho, Silami-Garçia & Marins, 2011; Dellal, Chamari,
Pintus, Girard, Cotte & Keller, 2008; Dellal, Hill-Haas, Lago-Penas & Chamari, 2011;
Dellal, Varliette, Owen, Chirico & Pialoux, 2012; Fanchini, Azzalin, Castagna, Schena,
Mccall & Impellizzeri, 2011; Halouani, Chtourou, Dellal, Chaouachi & Chamari, 2014;
Harrison, Kilding, Gill & Kinugasa, 2014; Hill-Haas, Dawson, Impellizzeri & Coutts 2011;
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Hoff, Wisløff, Engen, Kemi & Helgerud, 2002; Hoffman, Reed, Leiting, Chiang & Stone,
2014; Jones & Drust, 2007; Katis & Kellis, 2009; Kelly & Drust, 2009; Köklü,
Aşçi, Koçak, Alemdaroğlu & Dündar, 2011; Köklü, 2012; Köklü, Ersöz, Alemdaroğlu, Aşç
& Ozkan, 2012; Köklü, Alemdaroğlu, Dellal & Wong, 2015; Köklü, Sert, Alemdaroğlu
& Arslan, 2015a; Little & Williams, 2006; Little & Williams, 2007; Mallo & Navarro, 2008;
Platt et al., 2001; Rampinini, Impellizzeri, Castagna, Abt, Chamari, Sassi & Marcora, 2007;
Tessitore, Meeusen, Piacentini, Demarie & Capranica, 2006; Tsuda, Shinozaki, Goto &
Takamatsu, 2007; Williams & Owen, 2007). The great part of the studies previous mentioned
reported the HR data also divided in different classes of percentage respect to the HRmax.
Showing data in this way, the researchers found that during the SSG’s the players are exposed
for a big time to a heart rate greater than 90% of HRmax; this data is comparable with the
official match one.
To better analyse the physiological demands of the SSGs in soccer, many studies investigated
also the blood lactate accumulation (Aroso et al., 2004; Brandes et al., 2012; Coutts et al.,
2009; Dellal et al., 2011; Dellal et al., 2012; Fanchini et al., 2011; Harrison et al., 2014; Hill-
Haas et al. 2011; Hoff et al., 2002; Köklü et al., 2011; Köklü et al., 2012; Köklü et al., 2015a;
Köklü, 2012; Platt et al., 2001; Rampinini et al., 2007; Tessitore et al., 2006; Tsuda et al.,
2007). The results of this type of studies showed blood lactate accumulation at the end of
SSG’s ranging from 3 to 8 mmol*l-1
. The variability of this data is probably due to the great
difference of setting of this type of drills, such as bouts duration, number of players, pitch
dimensions, the presence of the goalkeepers and coach’s encouragement.
Another important tool to assess the effort of players consequent to the small sided games, is
the administration of the Rate of Perceived Exertion by means of Borg scales (Borg, 1982).
Among the body of literature that focused on the use of this tool to evaluate the physiological
response of SSG’s (Abrantes et al., 2012; Ade et al., 2014; Aguiar et al., 2013; Campos-
Vazquez et al., 2014; Dellal et al., 2011; Dellal et al., 2012; Halouani et al., 2014; Harrison et
al., 2014; Hill-Haas et al. 2011; Köklü et al., 2015; Köklü et al., 2015a) one particular
research had demonstrate the reliability of RPE on specific SSGs. The study of Coutts et al.
(2009) investigated the correlation of heart rate and blood lactate values with RPE ones
during small-sided soccer games, demonstrating that RPE correlates well with traditional
markers of exercise intensity during soccer-specific SSG’s training. Thus, player’s ratings of
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perceived exertion may be used within a soccer training session to monitor global exercise
intensity, and help the coach in the control of the training stimulus.
1.5 Small sided games in rugby
The utilization of the small-sided game was not only investigated in soccer but also in other
team sports like rugby, where a lot of studies were focused on this topic. The first study was
that of Gabbett (2002). The findings of this research were that the majority of injuries during
a rugby season were sustained in traditional conditioning activities that involved no skill
components (i.e. running without the ball), while in contrast the incidence of injuries
registered during skill-based conditioning games was lower. Thus the results of Gabbett
(2002) suggest that skill-based conditioning games offer a safe and effective method of
conditioning for rugby league players. Another study focused on the application of small-
sided game in rugby was presented by Gamble (2004). The author investigated the changes in
endurance fitness level of elite rugby union players, undertaking skill-based conditioning
games for a 9-week preseason training period. The findings of this study showed a general
decreasing of heart rate recovery after the end of the test and an increasing of the percentage
of heart rate max at the end of the test. Both HR recovery and % HRmax results are indicative
of advances in training status.
Two years after the study of Gamble (2004) another research of Gabbett (2006) investigated
the skill-based conditioning games in rugby. The aim of this study was to understand if skill-
based conditioning games could be a valid alternative to the traditional conditioning for rugby
players. The researcher found similar changes in agility and VO2max and greater
improvements in speed and muscular power in athletes participating in skill-based
conditioning games in comparison to those participating in traditional conditioning activities.
(Gabbet, 2006). These results demonstrate that skill-based conditioning games offer an
effective method of conditioning for rugby league players.
The study of Foster, Twist, Lamb and Nicholas (2010) was the first small-sided games rugby
study similar to the previous soccer ones: authors focused their attention on the analysis of
SSGs in rugby, in order to investigate the influence of number of players involved and
playing area size on players’ heart rate responses. During this study, rugby players were
involved in 2 repeated trials of six 4-minute conditioned SSG’s over a 2-week period; the
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SSG’s varied by playing area size (15x25 m, 20x30 m, 25x35 m) and players number (4vs4
and 6vs6). Differently from results published on soccer studies, the results of those focused on
rugby revealed a non significant effect of playing area size on players’ heart rates, while
significant effects were found for the number of players involved with higher heart rate values
in 4vs4 SSGs condition compared to the 6vs6 one (90.6% vs. 86.2% of HRmax). Thus the
findings of the study of Foster et al. (2010) demonstrate that SSGs in rugby generate
physiological responses suitable for aerobic conditioning which, although unaffected by the
size of the playing area are sensitive to the number of players involved. From 2010 until now,
a lot of rugby studies investigated the main characteristics of small-sided games in this sport
(Gabbet, Jenkins & Abernethy, 2010; Gabbet, Abernethy & Jenkins, 2012; Gabbet, Jenkins
& Abernethy, 2012; Johnston, Gabbett & Jenkins, 2014; Johnston, Gabbett, Seibold & Jenkins
2014a; Kennet, Kempton & Coutts, 2012; Sampson, Fullagar & Gabbett, 2015): physiological
and skill demands and the factors affecting exercise intensity (wrestling, bout duration, field
size and physical contact).
1.6 Small-Sided games in Basketball
Another team sports interested by the study of SSGs is basketball. The first study about this
topic was that of Sampaio, Abrantes and Leite (2009): the authors investigated the power,
heart rate and perceived exertion players’ responses during two SSGs conditions in
basketball: 3vs3 and 4vs4. The results of this study emphasized once again the high impact of
SSGs in team sports, with an average HR values greater than 80% of HRmax, which has a
similar trend to that of match. Furthermore analyzing the difference between the two types of
drills investigated in this study, the authors found that the increase in the field dimensions
corresponded to a decrease in physiological demands of the drill. Indeed the 3vs3 analyzed by
Sampaio et al. (2009) was played with a smaller playing area for player respect to the 4vs4
and as a consequence the players involved in the first drill had a greater metabolic demands
express by a greater percentage of HRmax. Following this first study, others authors analyzed
the small-sided games in basketball: in particular Klusemann, Pyne, Foster and Drinkwater
(2012), Atli, Köklü, Alemdaroğlu and Koçak (2013) and Delextrat and Martinez (2014)
investigated the characteristics of small-sided games and the consequences of the
administration of these type of drills on basketball players’. The aim of the first research of
Klusemann et al. (2012), was to understand the influence of number of players (2v2/4v4),
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court size (half/full court) and work-to-rest ratios (4x2.5 min/2x5 min) on the demands
of small-sided games in basketball. The results of this study confirmed the previous research
of Sampaio et al. (2009), about the high intensity of these type of drills in basketball: authors
found that HR and RPE were moderately higher in 2vs2 respect to the 4vs4 (86±4% vs.
83±5% of HRmax; 8±2 vs. 6±2 RPE values). In 2013, Atli et al., investigated the effect of 2
pitch sizes (full court vs. half court) on HR in basketball players during 3-aside games; the
findings of this study underlined a 9.3% higher HR values on the large pitch size (28x15)
compared with the small pitch size (14x15). The authors of this research, made also a
technical analysis of the small-sided games: significant differences between the two
experimental conditions in the parameters of shots, rebounds, and passes, were found. Thus,
this paper confirmed the majority of the previous findings of small-sided games in team
sports: when the relative court size per player is decreased, the number of technical actions in
the game increase but HR responses decreased.
The study of Delextrat and Martinez (2014) on small-sided games in basketball, compared the
effects of 2 training interventions based on small-sided games (SGG) and high-intensity
interval training (HIT) on physical and technical performance of male
junior basketball players. Before the experimental sessions, players aerobic fitness, repeated
sprint ability (RSA), defensive and offensive agility, upper and lower body power, shooting
and passing skills, were assessed. The main results of this study were that both interventions
resulted in similar improvements in aerobic capacity but RSA was unchanged after both
interventions. Furthermore, compared to HIT, SSG resulted in greater improvements in
defensive agility, shooting skills and upper body power.
The last study on small-sided games in basketball was the research of Conte, Favero,
Niederhausen, Capranica anf Tessitore (2015) about differences in load and effort of 2vs2 in
respect to 4vs4 small-sided games in basketball. The researchers, investigated also any
differences in these two types of drills using continuous or intermittent regimes. The findings
of this study were the higher effort of players during the 2vs2 compared with the 4vs4 (higher
HR and RPE values), and the greater HR values for the continuous protocol in respect of the
intermittent one.
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1.7 Small-sided games in other team sports
In the wide field of team sports also cricket and volleyball demonstrated interest for the small-
sided games or game-like drills. The study of Vickery, Dascombe, Duffield, Kellett
and Portus (2013) analyzed the influence of field size, player number and rule changes on the
physiological responses and movement demands of small-sided games for cricket training.
The drill analyzed by the authors was a typical cricket SSG (Battlezone). Thanks to the GPS
units, Heart rate and movement demands were continuously recorded during different
scenarios of “Battlezone”. The results showed that batsmen covered the greatest distance
(1.147±175 m) and the majority of time (i.e., 65– 86%) was spent with a HR ranging between
51 and 85% of HRmax. The findings of this research suggested that the greater changes in
training intensity were due to different playing rules. Changes in filed size had minimal effect
on training intensity.
The interest in small-sided games in volleyball was testified by the studies of Lehnert,
Stejskal, Háp and Vavák (2008) and Gabbett (2008). By the findings of this two studies
emerge (like in others team sports studies) the efficiency of training with SSG’s in volleyball.
Indeed the results of Lehnert et al. (2008) about the comparison of a normal match 6vs6 with
a modified rules 6vs6 one, underlined the greater intensity of the games with modified rules,
in particular for specific roles. Since this drill implies many consecutive attacks from the
same team, the players that cover attack roles will have a greater metabolic demands respect
to the defensive players.
The aim of a much complex study of Gabbett (2008) on SSGs in volleyball was to compare
the effects on youth players of two types of training stimuli: 1) one group trained with a skill-
based conditioning game (SSG’s), 2) one group trained with an instructional training focused
on technical gestures. The first results of this study showed a close similarity of the
physiological demands of the SSGs with those of the match. In this study was assessed also
the fitness and technical level of the two experimental groups after the experimental period.
Using some physical and technical tests, researchers found that the skill-base conditioning
games group had a greater increase of physical fitness level but a lower increase in technical
skill. Thus by the findings of this study emerges that the better training process for youth
volleyball players was composed by both the training methods: a skill-based conditioning
games method to improve the physical fitness capacity and an instructional training to
improve the players’ technical skill.
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1.8 Small-sided games vs. classic running drills
With the increased interest on the SSGs, and their physiological and technical-tactical
characteristics, some studies pass to a successive research hypothesis: could be possible
substitute the classic intermittent running training methods with the SSGs?
For example one of the first of this type of study was that of Sassi, Reilly and Impellizzeri
(2004), which was focused on the physiological response of soccer players during generic
versus specific aerobic training. The findings of this study highlighted the higher intensity of
small-sided games (4vs4 and 8vs8) respect to the repetitive interval running training
(4x1000m). In the study of Sassi et al. (2004), the highest intensity emerged during 4vs4
small-sided games, where players averaged 91% of HRmax. Similar values of HR were
observed during 8vs8, while during interval running training the average HR values detected
was 85% of HRmax.
After two years, Impellizzeri, Marcora, Castagna, Reilly, Sassi, Iaia and Rampinini (2006)
analyzed the physiological and performance effects of generic versus specific aerobic training
in soccer players. In particular, the authors investigated whether 12 weeks of SSGs training
could give the same improvement in aerobic fitness to the players. The assessment was made
by the analysis of the maximum oxygen uptake, lactate threshold, running economy and a
soccer-specific endurance test. Furthermore, an assessment provided during the performance
was focused on the total distance covered and time spent standing, walking, and at low-and
high-intensity running speed by players. The results of this study showed significant
improvements in aerobic fitness and match performance in both groups of soccer players
(SSG’s vs. intermittent running exercise). However , no significant differences between
specific and generic aerobic interval training were found in any of the measured variables
including soccer specific test.
In the successive comparative study of Dellal, Chamari, Pintus, Girard, Cotte and Keller
(2008), the heart rate responses during SSGs and short intermittent running training in elite
soccer players were investigated. The drills investigated by the authors were 6 types of small-
sided games (1vs1, 2vs2, 4vs4 with goalkeeper, 8vs8, 8vs8 with goalkeeper, 10vs10with
goalkeeper), and 5 types of intermittent running training (the high intensity part ranged from
100% to 120% of VO2max and from 30’’ to 5’’, with passive or active recovery). The findings
of this study underlined the incidence of the presence of the goalkeeper during small-sided
games in soccer; indeed, only during 2vs2 and 8vs8 with GK, similar heart rate response with
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intermittent running training were found. The results of this study showed that it is possible to
use some sided games for physically integrated training. The problem that coach has to solve
during small-sided games, is the control of the activity of the players by the choice of the
number of players, the presence of goalkeepers, the playing area, and game instructions.
In the last years, after the previous mentioned studies focused on the comparison of small-
sided games with classic intermittent running exercise for endurance training, some authors
try to understand if small-sided games were suitable to improve the performance in a
continuous aerobic or an intermittent test with directional changes (Dellal et al., 2012), speed-
endurance (Ade et al., 2014) or agility of soccer players (Chaouachi et al., 2014).
In the first study (Dellal et al., 2012) the authors tried to compare the effects of small-sided
games versus High Intermittent Training (HIT), on specific measures of physical
performance. Subjects were tested at the beginning and at the end of an experimental session
of 10 weeks with two different tests: a continuous aerobic running test (Vameval test) and an
intermittent test with change of directions (30-15 Intermittent Fitness Test). During the
experimental period, the subjects were divided into three groups: the small- sided games
group (SSGs) trained with 2vs2 and 1vs1 in fields of respectively 20x20m and 15x10m; the
HIT group trained with different type of intermittent running drills (30’’-30’’, 15’’-15’’, 10’’-
10’’); the third group was the control group. The main result of this study was that SSGs and
HIT group showed significantly improvement in the two test respect the control group that
had no changes. No significant differences were found between the two experimental groups
(SSGs vs. HIT).
In the second study, Ade et al. (2014) compared 4 types of training: 2 speed-endurance drills
(8 bouts of 30 seconds of maximal speed run with 120 seconds recovery; 8 bouts of 60
seconds of maximal speed run with 60 seconds recovery) and 2 small-sided games drills (8
games of 1vs1 and 2vs2 in a 27x18m pitch with minigoals, respectively for 30 and 60 seconds
with 120 and 60 seconds). The findings of this study demonstrated that physiological response
of soccer players during small-sided games training was lower compared with the equivalent
running drills. Differently, during small-sided games, the results showed a higher blood
lactate concentrations, probably due to the great number of accelerations and decelerations.
In the third study, Chaouachi et al. (2014) compared the effect on players agility and change
of direction ability of two type of training: small-sided games (1vs1, 2vs2 and 3vs3) and
multidirectional sprints training. The main finding of this study was the significant superior
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effect of SSG practice on agility performance considered as the ability to provide a proper
COD according to an unpredicted external stimulus (Chaouachi et al., 2014).
The results of these studies just mentioned in this paragraph, were all similar. Indeed, no
studies reported a greater metabolic demand for the SSGs respect to the classic running
intermittent exercise, but the level of intensity of the two training methods was equal. In
particular the findings of these studies emphasized the fact that some SSGs with reduced
number of players and pitch dimensions, like 2vs2 and 3vs3, or with particular rules (i.e.
presence of the goalkeeper), in some cases exposed the players to a higher physiological
demands than intermittent running exercise.
Compared with the methods without the ball, those specific that reproduce game situations
could offer relevant advantages, allowing coaches to achieve conditioning target applied in a
technical and tactical context. However, the traditional parameters used to determine the
intensity of training load with methods without the ball (i.e. distances and times) have to be
changed in case of specific drills that reproduce the game situations. Therefore, new specific
aspects, as number of players, field dimensions, time of drill, time of recovery and rules of
play, need to be included in the periodization and training monitoring phases. With this goal,
two examples can be taken from the research of Tessitore et al (2006). First, if the ball is
immediately throw-in game when the goal is scored (application of modified rules) the
exercise will result more intense. Second, once fixed a number of players, reducing the
exercise-field dimensions, the exercise (play) intensity of players could increase to a certain
ratio field dimension/n. of players, while increasing the field dimensions the exercise intensity
over a certain ratio could decrease.
Thus, the use of specific drills that reproduce the game situations requires that these specific
training load parameters, as a result of scientific investigations, are previously fixed.
1.9 Small sided games in handball
In Handball, as in other team sports, the outcome of performance implies the integration of
technical, tactical, physical and psychological aspects. It is well established by Chaouachi et
al (2009) that improving aerobic fitness of handball players can increase their conditioning
performance. Moreover, Cardoso-Marques and Gonzalez-Badillo (2006) demonstrated the
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impressive effect of detraining in elite handball players, underlining the importance of
endurance training for handball player.
In handball, although still a little, the use of specific drills for endurance training is becoming
an adopted practice. The main study investigating the application of SSGs in handball is that
of Bucheit, Lepretre, Behaegel, Millet, Cuvelier and Ahmaidi, (2009). In handball, as well in
other team sports, the intensity of this type of drills was very high and similar to the
physiological demands of competition. In the study of Bucheit et al. (2009) the authors point
of view start from the fact that, although technical skills, anthropometric characteristics and
muscle strength and power are the most important factors for successful participation in elite
levels of handball leagues, the importance of aerobic capacity should not be underestimated.
Indeed, during a match, players run about 4-6 km (Bucheit, 2005) at a mean intensity close to
80-90% of maximal heart rate (Loftin et al., 1996). Significant associations between maximal
oxygen uptake (VO2max) and playing level have also been shown in other studies (Rannou et
al., 2001; Gorostiaga et al., 2005).
To enhance aerobic fitness of handball players is often used the classic method of intermittent
running exercise; the aim of the research of Bucheit et al. (2009) was to compare the classic
methods of training with the use of sport-specific exercise. The players involved in this
research performed both the training methods scheduled by the experimental design: 1) a
classic intermittent running exercise, composed by an 8-min shuttle intermittent running
consisting in 15 seconds of effort interspersed with 15 seconds of passive recovery; 2) a sport-
specific exercise consisting in a 4-a-side match in a normal field composed by two
consecutive 225 seconds playing periods were carried out, separated by 30 seconds of passive
rest to reach similar total exercise duration than intermittent exercise (8 minutes). The results
showed that VO2peak and VO2 were similar in both training methods but, expressed as a
percentage of VO2max, the sport-specific group VO2peak was significantly higher than the
intermittent exercise group VO2peak. Mean heart rate and rate of perceived exertion were
similar for the sport-specific group and intermittent exercise group.
Thus the findings of Bucheit et al. (2009) underlined the fact that 4-a-side handball game can
be used as a specific alternative to intermittent running exercise for enhancing aerobic fitness
in handball players. In particular, compared to the intermittent exercise, playing small
handball games is associated with a lower anaerobic participation and lesser system stress
metabolite accumulation, which encourages its use during competition phase. Furthermore, by
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the results of the initial tests, was emerged that cardiorespiratory responses during small
handball games are inversely related to fitness level, thus coaches are invited to add specific
rules to increase the activity of the fittest players.
Another study of Bucheit, Laursen, Kuhnle, Ruch, Renaud and Ahmaidi (2009b) investigated
not only the simple aspect of the analysis of SSGs in handball, but was focused on the
comparison of the effect of high-intensity interval training versus a specific game-based
handball training on handball performance parameters in youth handball players. The
experimental period was scheduled on 10 weeks and after this period the results of the tests
confirmed the trend of the previous studies in different discipline: the best time and the mean
time in Repeated Sprint Ability test were improved like the final velocity in the 30-15
Intermittent Fitness Test for both groups. Thus, from the findings of this study, is possible to
say that both intermittent running exercise and small-sided game methods are effective
training methods for adolescent handball players, but sport-specific training should be
considered as the preferred training methods due to its higher game-based specificity. One of
the last studies on small-sided games in handball was made in 2014 by Clemente and Rocha:
researchers investigated the heart rate responses of student during small-sided games. In this
research the small-sided games were set differently respect the previous studies: the “task”
consisted of scoring by having one offensive player catching a ball pass beyond the opponent
defensive line (Clemente & Rocha, 2014). The authors tested this “tasks” in six experimental
conditions: 2vs2, 3vs3 and 4vs4 each in two different field dimensions (1/8 of the regular
field - 10 x 7.5 metres and 2/8 of the regular field - 20 x 7.5 metres). Findings of this study
highlighted the highest heart rate values during 2vs2 drills in both of the field dimensions.
However, despite the studies of Bucheit et al. (2009a and 2009b) and Clemente and Rocha
(2014) about the effects of a traditional intermittent running exercise compared with a specific
4-a-sided game played on a regular field dimension, and the use of game-based training in
young players or students, there is a lack of knowledge regarding different exercise setting in
which the number of players, field dimensions, and exercise durations are modified.
In 2015, Moss and Twist, analyzed another type of “integrated” training in handball, called
“team sport simulation”. This study, investigated and compared two types of drills (LONG
and SHORT), that were composed by circuits of technical gesture like dribbling, shoots or
passes, and physical action like sprint, jumps and change of direction. One of the important
findings of this study was the detection of an average HR of 84% of HRmax, with a maximum
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HR of 92% of HRmax. Authors concluded that shorter work (SHORT) appeared to provide a
practically meaningful preservation of sprinting performance, both during and immediately
after exercise when compared to longer work (LONG) (Moss & Twist, 2015).
The last study on small-sided games in handball was the research of Iacono, Eliakim &
Meckel (2015) focused on the comparison of one type of small-sided games in handball
(3vs3) with the High-Intensity Intermittent Training (HIIT). Small-sided games were 5 ×
different time duration (range 2’25’’-3’10’’) of 3vs3 in a 20×20m court dimensions, with
always 1’ of recovery between the series. The HIIT program consisted of 12- to 16-minute
intermittent running of 15-second activity over 40-m shuttles interspersed by 15 seconds of
passive walking recovery. The results of this study underlined the efficiency of both training
program for the improvement of aerobic capabilities and supra-maximal intermittent
performance. In particular, small-sided games training was more effective for the
improvement of anaerobic and strength performances compared with HIIT.
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2. Topic and Problem identification
The subject of this research is the analysis of SSG’s in a sport like handball, where there is a
lack of scientific literature about this problem and where the training methodology are in
some case not update respect other discipline like soccer or rugby. The problem that rises
from the application of SSG’s is if this training tools, that reproduces technical and tactical
element of the match, may reflect this also in the physiological aspects, leading to an increase
of the endurance capacity of handball players. This problem, already investigated in the
research of Buchheit et al. (2009), isn’t the only problem of the wide field of application of
small sided-games. Handball coach and physical trainer ask to have some tools to change the
load and effort of this SSG’s, with the aim of change the physical capacity to train, like it is
possible to do in the exercise without ball (vary the speed of run, insert of change of direction,
etc.). Thus the survey of the change in load and effort of handball players in response to the
change of number of players, or field dimensions in SSG’s, as already done for other sport
like in the studies of Tessitore et al. (2006), Sampaio et al. (2009) and Foster et al. (2010), can
answer this practical question.
3. Hypothesis and Objectives
The aim of this project is to analyse both load and effort demands of game-based drills in
handball, emphasizing the differences obtained with changes in the number of players and
field dimensions. In particular we construct four basic objectives:
1. Establish whether statistically significant differences occur in extent and intensity of cyclic
activities among 3-a-side drills with different space and number of players, among 4-a-side
drills with different space and number of players.
2. Establish whether statistically significant differences occur in relative heart rate among 3-a-
side drills with different space and number of players, among 4-a-side drills with different
space and number of players and among 3-a-side and 4-a-side drills.
3. Establish whether statistically significant differences occur in extent and intensity of cyclic
activities among 3-a-side and 4-a-side drills
4. Establish whether statistically significant differences occur in relative heart rate among 3-a-
side and 4-a-side drills
In accordance with the aims of the research we formatted 12 hypotheses:
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H01: Among 3-a-side drills there are no statistical significant differences in distances covered
(amount of cyclic activities) by players during the game.
H02: Among 3-a-side drills there are no statistical significant differences in intensity of cyclic
activities performed by players during the game
H03: Among the 3-a-side drills there are no statistical significant differences in frequency of
acyclic activities performed by players during game
H04: Among the 3-a-side drills there are no statistical significant differences in relative heart
rate and RPE values.
H05: Among 4-a-side drills there are no statistical significant differences in distances covered
(amount of cyclic activities) by players during the game.
H06: Among 4-a-side drills there are no statistical significant differences in intensity of cyclic
activities performed by players during the game
H07: Among the 4-a-side drills there are no statistical significant differences in frequency of
acyclic activities performed by players during game
H08: Among the 4-a-side drills there are no statistical significant differences in relative heart
rate and RPE values.
H09: There are no statistical significant differences in distances covered (amount of cyclic
activities) by players between 3-a-side and 4-a-side drills.
H010: There is no statistically significant difference in intensity of cyclic activities performed
by the players between 3-a-side and 4-a-side drills.
H011: There is no statistically significant difference in frequency of acyclic activities
performed by players between 3-a-side and 4-a-side drills.
H012: There is no statistical difference in relative heart rate data recorded and RPE values
between 3-a-side and 4-a-side drills.
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4. Methods
4.1 Sample description
The subjects who participated to this study were 8 players of the Lazio Pallamano, an Italian
A1 league team (Second division). Before the beginning of the experimental period every
players signed a written consensus and they can stop with the experiment in any moment.
During all the experimental sessions, the subject had to be health; the procedure of every
session was explained to the subjects before the beginning of each experimental session and
they had to agree with all the procedures.
4.2 Parameters
Cyclic movements were recorded as an amount of running (and/or walking) and intensity of
running (and/or walking). Intensity of running was divided into four speed classes according
to their speed (Table 2):
Table 2
Cyclic Movements Analyzed
Variable Description of variable Unit
Distance (S) Total of all run and/or walked distances in the
match or in a half
m
First speed class (SC1) Total of run and/or walked distances while
running or walking; speed: up to 1.4 m/s
m/s
Second speed class (SC2) Total of run distances while running slowly;
speed: between 1.4 m/s and 3.4 m/s
m/s
Third speed class (SC3) Total of run distances while running fast;
speed: between 3.4 m/s and 5.2 m/s
m/s
Fourth speed class (SC4)
Total of run distances while sprinting; speed:
above 5.2 m/s
m/s
Average speed (AS) Average speed of walking or running m/s
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The four speed classes were established following the example of previous scientific
researches in handball. In the studies of Pers et al. (2002), Šibila et al. (2004) and Pori et al.
(2005), the classification of speed of run in handball match was made with the same four
speed classes indicated in the upper table. Also in studies about other team sports like that of
basketball of Vuckovic et al (2010), the type of classification of speed was made in the same
way represent in the table above.
Regarding the acyclic activities, the different activities detected during the experimental
period were listed in the table below (Table 3).
Table 3
Chosen Parameters of Acyclic Activities
Variable Description of variable Unit
SH Shoots to goal from
different position
Number
PI Pistons movements toward
goal
Number
PA Passes Number
JU Jumps Number
ST Stopping attackers with
body and arms
Number
COD Change of direction Number
The experimental period was divided into two parts (Table 6). Between these two periods of
the research, some tests for the assessment of the sample were administered. The parameters
analyzed during this test, with the aim of understand in the best way the individual effort of
players during drills, were summarized in the Table 4.
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Table 4
Chosen Parameters of Effort Measured by Tests
Variable Description of variable Unit
HR rest HR values in rest Beat/min
HR max Maximal HR values Beat/min
VO2max Maximal oxygen
consumption
ml*kg*min-1
Finally, to better understand the effort of players during the game, the variables described in
the table below were analyzed (Table 5).
Table 5
Chosen parameters of effort during the game
Variable Description of variable Unit
HR abs Absolute HR values during the game Beat/min
HR rel 5 Relative HR values during the game below
50% of maximal effort
%
HR rel 5-7 Relative HR values during the game between
50% and 70% of maximal effort
%
HR rel 7-9 Relative HR values during the game between
70% and 90% of maximal effort
%
HR rel 9 Relative HR values during the game over 90%
of maximal effort
%
The choice of using this type of classification for heart rate is made on the basis of previous
studies on the analysis of effort in handball. In particular the study of Pori and Šibila (2006)
about the analysis of high-intensity large-scale movements in team handball, and the doctoral
thesis of Bon (2001) about the quantified evaluation of loading and monitoring of heart rate of
handball players in a match.
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4.3 Experimental procedures
The literary review highlighted the lack of research on particular handball drills for the
development of the specific endurance. In particular, unlike other team sports, there is a total
absence of studies on the variation of effort for handball players in response to the variation of
some parameters of the drills like field dimensions, number of players or change of rules.
Thus the drills that were analysed in this research are:
- the 3-a-side in a field of 24mx12m (approximately 36sqm for players);
- the 3-a-side in a field of 30mx15m (approximately 56sqm for player);
- the 3-a-side in a field of 32mx16m (approximately 64sqm for player);
- the 4-a-side in a field of 24mx12m (approximately 28sqm for player);
- the 4-a-side in a field of 30mx15m (approximately 45sqm for player);
- the 4-a-side in a field of 32mx16m (approximately 51sqm for player).
During the 3-a-side drills the defence in front of the goalkeeper was a zone-defence that
reproduced the central part of an hypothetic 5-1 defence with the back center and two half
defenders, without the front center defender; the opponent held the position of left, right and
central backcourts independently of their real role.
During the 4-a-side drills the defence in front of the goalkeeper was a zone defence that
reproduced the central part of an hypothetic 5-1 defence with the back and front center
defender and the two half defender; the opponent held the position of left, right and central
backcourts and of pivot.
The floor lines that were marked on the field are represented in figure 1 and 2 with the
dislocation of the players in each of two types of drills: the line of six meters was semicircular
and the line of seven meters was marked in normal way like in the regular field.
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Figure 1. Example of dislocation of players in 4-a-side drills. This figure shows how the
players normally play during the 4vs4 drills, in the roles of central, left and right back, and
pivot.
Figure 2. Example of dislocation of players in 3-a-side drills. This figure shows how the
players normally play during the 3vs3 drills, in the roles of central, left and right back.
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The rules of the drills were the same of the normal handball with the exception of:
1) throw-in after a goal was immediately made by the goalkeepers from their 6-m area, and the
investigator was always available to immediately replace the ball when it was thrown out of
the playing area (Buchheit et al., 2009),
2) the 2-min exclusions were not present, but the referee only sanctioned “normal” faults.
The drills lasted for 8 minutes and during this time the substitution of player was forbidden to
the aim of have the same players in game for all the drill. In the case of an injury the player
was immediately substitutes by another but his physiological data will not calculate for the
general assessment of the load of the drill.
The referee of all the drills will be always the same: an official referee of the FIGH (Italian
handball federation).
The experimental period was divided into two parts of about 6 weeks (Table 6): during the
first were taken the data on 3vs3, during the second were taken the data on 4vs4; thus the
experimental period lasted about 4 months, for a total of twelve experimental sessions, plus
two sessions for tests that were made in the period between the two experimental parts. All
the experimental sessions were scheduled at the same time of the day, (on a Tuesday once
every weeks during normal training) to avoid any effect of circadian rhythms on the measured
variables (Drust, Waterhouse, Atkinson, Edwards & Reilly, 2005).
In each experimental session were taken data about only one type of drill with one series of
eight minute. In this way for each type of drill will be taken data two times.
To decide which players had to play in the 3vs3 drills, a draw was made before each training
session due to randomize the drills participants.
Before each experimental session every player had to wear the specific vest to support the
GPS unit and the heart rate belt (Figure 3); during this procedure an assistant signed on a
specific table, the number of GPS unit with its relative player name and the time of start of the
activity of GPS unit. After this procedure the players performed a standardized warm-up that
includes the warm-up for the goalkeepers, for a total duration of twenty minutes.
Before start the first drill, the assistant noted the time of start and end of the drill. At the end
of each drill every player had to look at the Borg scale and tell to the assistant the personal
value for the drill just ended.
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Figure 3. GPS equipments. This figure illustrates the package of the GPSorts with the GPS
units, and the specific vest to support them.
Table 6
Schedule of All the Experimental Sessions
3vs3 Test 4vs4
First week 24x12 (1) --- ---
Second week 24x12 (2) --- ---
Third week 30x15 (1) --- ---
Fourth week 30x15 (2) --- ---
Fifth week 32x16 (1) --- ---
Sixth week 32x16 (2) --- ---
Seventh Week --- First session ---
Eighth week --- Second session ---
Ninth week --- --- 24x12 (1)
Tenth week --- --- 24x12 (2)
Eleventh week --- --- 30x15 (1)
Twelfth week --- --- 30x15 (2)
Thirteenth week --- --- 32x16 (1)
Fourteenth week --- --- 32x16 (2)
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To evaluate in the better way the load and effort of the players during the various types of
drills, the following survey were made:
Match Analysis
To provide valuable information on the overall demands of team-sport competition, time-
motion analysis was made. All the drills were recorded by means of video cameras
positioned at a side of the pitch. The images were analyzed for counting of the number of
acyclic movements previous mentioned. By means of a SPI elite GPS system (GPSports), the
cyclic movements were categorized as: 1) total of all run and/or walked distances in the drills;
2) total of run and/or walked distances while running or walking: speed up to 1.4 m/s; 3) total
of run distances while running slowly: speed between 1.4 m/s and 3.4 m/s; 4) total of run
distances while running fast: speed between 3.4 m/s and 5.2 m/s 5) total of run distances
while sprinting: speed above 5.2 m/s; 6) average speed of walking or running; 7) maximal
speed during the drills.
In literature are not reported researches in the handball environment in which the amount and
the intensity of cyclic movements are calculated thanks to the SPI elite GPS System. This is
probably due to the fact that being handball a discipline indoor, for many years was preferred
the use of fixed camera system for the acquisition of data about cyclic movements. In this
research there was no obstruction to the signal of the GPS device within the handball court, as
it was merely covered by a plastic sheet (Figure 4).
The portability and the more simplicity of the GPS system, led to an increase of utilization of
this technology for the assessment of load and effort in team-sports. Many studies have been
focused on the validity and reliability of the GPS System, and a comparison between these
new technologies with the fixed camera system. In the analysis made by Duffield, Reid,
Baker and Spratford (2009), the comparison of GPS system with a 22 camera VICON motion
analysis system reported that for measuring athlete movement patterns at slow or moderate
speeds and for a long distance, GPS technology has acceptable inter-unit reliability and
accuracy for distance measured; as the speed of movement increases there is and
underestimation of total distance covered and of peak of speed. Also the other studies on this
topic obtained the same results: Petersen, Pyne, Portus and Dawson (2009) and Jennings,
Cormack, Coutts, Boyd and Aughey (2010) underlined the fact that the results of their studies
showed that the GPS devices have an acceptable level of accuracy and reliability for total
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distance and peak speeds during high-intensity intermittent exercise, but may not be provide
reliable measures for higher intensity activities.
On the basis of the studies previous mentioned many authors used the GPS system to their
goal: Castellano and Camasichana (2010) made a motion analysis and an heart rate evaluation
of beach soccer, Brewer, Dawson, Heasma, Stewart and Cormack (2010) compared the
movement pattern of elite and sub-elite Australian football games, Macutkiewicz and
Sunderland (2011) used the GPS to evaluate activity profiles of elite women hockey players
during match play.
Figure 4. Handball court covered by a plastic sheet. This figure illustrates the court where the
experimental sessions were made; the plastic sheet permits the passage of the GPS signal
without obstacle.
Before the experimental period, a GPS signal test with a preliminary study was made. We
detected heart rate and gps signal during a single 3vs3 drill. The successive analysis of the
data underlined no interruption in the transmission of the gps signal. Furthermore, before the
experimental period, we tested the signal of the GPS in all the court area. Once the GPS unit
is on (Figure 5), if the signal is good, the top green light blinks and then remains fix for the
rest of the session. If there is no GPS signal, the lower red light blinks.
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Figure 5. GPS unit. 1=Good signal light; 2=No signal light; 3=power button
Heart rate measurements (HR)
To evaluate the player’s efforts, HR was recorded with SPI elite GPS system (GPSports)
during the entire exercises with a sampling frequency of 1/15 sec. The intensity of effort
subsequently was calculated in relation to the estimated HRmax obtained during the field test.
To indicate the physical load imposed on athletes during the drills analyzed, was used the
follows way : the subjects minimum HR (surveyed in the morning in the bed of 5 consecutive
days), together with the maximum HR obtained from the 30-15IFT, was put in the Karvonen
formula (HR(%)=[100*(HR-HRmin)]/[HRmax-HRmin]) to calculate the relative effort (Duarte,
Araújo, Fernandes, Travassos, Folgado, Diniz & Davids, 2010). The reference scale was the
follows : <50%, 50%-70%, 70%-90% and >90% of the relative HR. Then, the percentage of
time (s) spent in each activity categories will be calculated for subsequent statistical analysis.
1
2
3
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Subjective ratings
The Borg’s scales of perceived exertion (RPE), was administered (Figure 6). Therefore, at the
end of the experimental session, subjects were asked to evaluate the intensity by means of a
10-point likert scale (Borg’s scale CR10), ranging from “noting at all” (0 pt) to “very, very
hard” (10 pt). Scores will be recorded to the nearest 0.5.
Figure 6. Rate of Perceived Exertion’s scale of Borg
The utilization of the modified Borg’s scale, instead of the classic Borg’s scale 6-20 (Borg,
1998), is supported by the scientific literature already published on SSG’s. Authors like
Impellizzeri et al (2006), Rampinini et al (2007), Coutts et al (2009), Fanchini et al (2011)
used for the evaluation of effort of adult players during small sided-games in soccer the CR10
scale of Borg. Only two studies on the application of specific-drills on soccer used the 6-20
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Borg’s Rate of perceived exertion scale, but the subjects of the researches were young players
(Hill-Haas, Roswell, Coutts & Dawson, 2008; Hill-Haas, Dawson, Coutts & Roswell, 2009).
Moreover in the only research in the scientific literature about the use of SSG’s in handball,
the study of Buchheit et al. (2009), is administered the CR10 scale of Borg to evaluate the
effort of handball players. Thus, for the above mentioned reasons, and for the reliability and
validity of the CR10 scale respect to the 6-20, in this research was used the CR10 scale to
assess the effort of handball players during handball SSG’s.
In some of the previous research focused on performance in team sport, another tool to
evaluate the effort of players was the blood lactate accumulation. In our study, we didn’t use
this method for 2 main reasons:
1) the difficulties to have the presence of a doctor during each experimental session
(mandatory for this type of exam)
2) the influence of high intensity activities during handball match or training on blood
lactate accumulation; for example if we made the sampling procedure at the end of the
8 min drill, the blood lactate value could be very heterogeneous not due to real
differences in players fitness but for the influence of the last 1 minute activity of each
player. (high intensity action in the last minute could increase the blood lactate
accumulation value)
4.4 Sample evaluations
To define in the better way the sample of handball players that participated to this study and
their fundamental characteristics, according to their age, the following test protocols were
applied:
Anthropometric evaluations
Anthropometric measurements were made to ascertain the participants’ height (cm), body
mass (kg), body mass index (kg/m2), and percentage of body fat by means of skinfold
thickness evaluations. The specific skinfolds were the triceps, subscapular, suprailiac,
abdominal, axillary, thigh and pectoral and they were measured three times each by means of
a Lange calliper (Cambridge Scientific Instruments, Cambridge, MD). The Jackson and
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Pollock formula for men (1978) was used to calculate the individual’s percentage of total
body fat relatively to the age.
Maximal heart rate evaluation (30-15 Intermittent Fitness Test - 30-15IFT)
The test consists of 30s runs and 15s rests, the latter can be either walking or standing on the
spot. The running velocity (loading) increases with each repetition and the subjects perform
the test until exhaustion and/or until they can cope with the increasing loading. The running
velocity (pace) is dictated by a sound signal according to which the subjects orient themselves
as it resounds at the beginning of every 30s of loading, at every line on the handball court
(thus informing the subjects whether they are lagging behind or running ahead of the required
velocity and can therefore accelerate or decelerate) and at the end of every 30s of loading. The
sound signals differ accordingly (Figure 7).
Figure 7. Scheme of the 30-15 IFT lines
The initial velocity is 8 km/h and grows by 0.5 km/h with every repetition. The subjects run
for as long as they are able to keep up with the velocity dictated by the sound signals. The test
is completed when they are unable to reach the selected line on the court three consecutive
times (or 3m of the tolerance zone in front of the line). The final result is the last velocity
which the subject ran in accordance with the described rules (Maximal Aerobic Velocity or
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MAV). The maximal absolute obtained hart rate by this test should serve to calculate the
relative hart rate.
We decided to use only a field test and not a laboratory test. The main reason of this choice
was the difficulty of semi-professional players to reach the laboratory, and the not possibility
of plan all the test sessions with the presence of a doctor (mandatory for a maximal laboratory
test).
Jump evaluations
Counter movement jump (CMJ) was evaluated by means of an optical acquisition system
(Optojump, Microgate, Udine, Italy). During tests the effect of the arm swings was minimized
requesting the athletes to keep their hands on their hips (Figure 8). Two trials with a 5-minute
recovery period between trials were allowed to the players and the receiving of verbal
encouragement was allowed too. Thus, their best performance was used for statistical
analysis.
Figure 8. Example of Jumps evaluation with the Optojump
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Sprint evaluations
The time of twenty-meter sprints (20 m) was measured by means of a dual infrared reflex
photoelectric cells system (Polifemo, Microgate, Udine, Italy) (Figure 9). The “start” and
“end” photoelectric cells were positioned 20 meters apart and the first timing gate was
positioned at 0.5 m from the starting. The test was filmed to evaluate the correct executions.
Prior to the test, players made a 15-minute standardized warm-up period during which they
carried out jogging, technical exercises of moderate intensity, and stretching. For each test
two trials with a 5-minute recovery period between trials were allowed to the players and the
receiving of verbal encouragement was allowed too. Thus, their best performance was used
for statistical analysis.
Figure 9. Microgate Photoelectric cells system
Repeated sprint ability evaluation (RSA)
To evaluate the player’s repeated sprint ability the 40-m Maximal Shuttle-run Test (MST)
reported in the study of Glaister, Hauck, Abraham, Merry, Beaver, Woods and McInnes,
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(2009), with the use of photoelectric cells, was administered. In the 40-m MST, which
consisted of 8 × 40-m shuttles interspersed with 20 s recovery intervals, subjects were
required to run between two lines placed 20-m apart, with the start/finish line (and the
photocells) placed at the midpoint of the course (Figure 10). On instruction, each subject
sprinted 10 m from the start/finish line to the end of the course, turn 180°, sprint 20-m to the
other end of the course, turn 180°, and sprint 10-m back through the start/finish line. Subjects
were instructed to place at least one foot over the line at the end of each shuttle, the adherence
of which was monitored to ensure full compliance.
10 meters start/finish line
20 meters
10 meters
Figure 10. Scheme of Glaister et al. Repeated Sprint Ability Test.
The best time and the mean time of the eight shuttle-sprints were recorded; furthermore the
fatigue time was calculated as the difference between the best and the worst sprint time.
4.5 Statistical analysis
The statistical package SPSS (17.0) was used for the analysis. Data was presented as mean
values and standard deviations of frequency of occurrence (%); statistical significance was set
at an alpha level of P=0.05. Before the study, the Kolmogorov test was applied to test the
normal distribution of the data.
To verify differences among the heart rate classes and cyclic movements (speed classes) in
the three different field dimensions, two multivariate analysis of variance (MANOVA) for
repeated-measures were applied, considering the heart rate classes in the first and the speed
classes in the second as within factor. For each heart rate class a further MANOVA for
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repeated measures was be made to verify differences among 3-a-side and 4-a side drill in each
of three field dimension. For statistical tests that used multiple comparisons, post-hoc Fisher
protected least significant difference comparisons with Bonferroni corrections was used.
To verify differences among RPE values in the three difference field dimensions ANOVA for
repeated measures was applied and post-hoc comparisons were performed by means of
Tukey’s test.
Non parametric statistics (i.e., Chi-square and Mann-Whitney U tests) was used to analyse
frequencies of occurrence of observed variables or data set that do not meet the criteria of the
normal distribution. This group of variables was composed by the acyclic movements of the
match analysis.
To provide meaningful analysis for significant comparisons from small groups, the Cohen’s
effect sizes (ES) between groups was also calculated. An ES < 0.2 was considered trivial,
from 0.3 to 0.6 small, <1.2 moderate and >1.2 large. In order to avoid Type I statistical errors
univariate effects within MANOVAs was examined only if the overall MANOVA was
significant. In order to control for assumptions which must be met in this kind of analyses the
Levene’s test for homogeneity of variance and the Mauchly's test for the sphericity, were
performed.
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5. Results
The results of this study were divided into 4 different section that are listed below:
1) Sample assessment: all the data about the evaluations of subjects anthropometric
characteristics, Maximal Heart rate, jump and sprint capacity, Repeated Sprint Ability.
2) Analyses of load and effort in the 3vs3 SSG’s: all the results found during the 3vs3
SSG’s experimental sessions (cyclic and acyclic movements, match analysis, heart rate and
RPE values).
3) Analyses of load and effort in the 4vs4 SSG’s: all the results found during the 4vs4
SSG’s experimental sessions (cyclic and acyclic movements, match analysis, heart rate and
RPE values).
4) Analysis of load and effort of the 3vs3 compared to the 4vs4 SSG’s: all the results
found comparing the 3vs3 to the 4vs4 SSG’s
5.1 Sample assessment
Anthropometric evaluations
The anthropometric measures of the sample are showed in the table below (Table 7). The
average age of the subjects was 29±4 (range 24-33) years and their average height and weight
was respectively of 183.75±8.22 cm and 84.50±9.56 kg.
Table 7
Sample’s Anthropometric Measures
Subjects Age (years) Weight
(kg)
Height (cm) Body mass
index
Fat mass (%)
1 27 73 182 22.04 10.58
2 33 78 178 24.62 15.65
3 24 90 186 26.01 15.92
4 29 95 200 23.75 20.91
5 30 84 185 24.54 13.50
6 29 78 173 26.06 14.06
7 37 100 188 28.29 22.07
8 27 78 178 24.62 12.96
Average 29.50±4.00 84.5±9.56 183.75±8.22 24.99±1.85 15.71±3.95
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Maximal heart rate evaluation (30-15 Intermittent Fitness Test - 30-15IFT)
The heart rate evaluation made on the sample of this study by the administration of the 30-15
IFT, highlighted the results reported in the Table 8. The average HR rest and max were
respectively of 51±7 and 182±8 bpm. The average MAV was of 18.94±1.15 km/h and lead to
an average VO2max of 53.48 ± 3.31 ml*kg*min-1
.
Table 8
Sample’s Heart rate and VO2 max evaluation
Subjects HR rest
(bpm)
HR max
(bpm)
MAV
(km/h)
VO2 max
(ml*kg*min-1
)
1 54 176 17.5 49.25
2 54 199 19.5 56.71
3 61 180 19 51.44
4 54 178 17.5 49.03
5 41 180 19.5 55.29
6 44 186 20 56.46
7 45 173 18 52.73
8 54 185 20.5 56.91
Average 51±7 182±8 18.94±1.15 53.48±3.31
Jump and sprint evaluations
The results of the assessment of the CMJ and the 20-meters sprint are reported in the Table 9.
The average eight of jump during the CMJ test was of 33.16±2.32 cm and the average time on
the 20-meters sprint was of 3.34±0.17 sec.
Repeated sprint ability evaluation (RSA)
The evaluation of the RSA of the subjects was made by the administration of the Glaister test
(2009). The results are showed in the Table 10 and underlined an average sprint time of
9.29±0.24 sec with a fatigue time of 0.68±0.60 sec.
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Table 9
Sample’s Jumps and Sprint Evaluation
Subjects CMJ (cm) 20-m Sprint (sec)
1 32.50 3.07
2 36.70 3.27
3 33.60 3.45
4 34.80 3.52
5 32.50 3.34
6 31.00 3.29
7 29.40 3.57
8 34.80 3.19
Average 33.16±2.32 3.34±0.17
Table 10
Sample’s RSA Evaluation
Subjects Best (sec) Worst (sec) Mean (sec) Fatigue time (sec)
1 8.50 10.59 9.53 2.09
2 9.04 9.38 9.23 0.34
3 8.94 9.64 9.27 0.70
4 9.20 9.60 9.46 0.40
5 8.97 9.68 9.27 0.71
6 9.05 9.31 9.20 0.26
7 9.38 9.66 9.55 0.28
8 8.35 9.02 8.81 0.67
Average 8.93±0.34 9.61±0.46 9.29±0.24 0.68±0.60
5.2 Analyses of load and effort in the 3vs3 SSG’s
The results concerning cyclic movements are presented in Table 11. The total distance
travelled by players during SSG’s increased significantly in parallel with the increasing
dimensions of the court (p<0.05; large ES).
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As showed in the table below, the greatest average distance travelled by players during SSG
was of 1095.0±113.0m, observed during the drill in the largest court (32×16m). In the other
two experimental conditions, the average distance covered by players was 980.0±73.5m and
885.2±66.7 m respectively observed with the 30×15m and 24×12m court dimensions.
Table 11
Total distances covered in each experimental condition of the 3vs3
Court dimensions Total distances (m)
24×12m 885.2±66.7
30×15m 980.0±73.5*
32×16m 1095.0±113.0*#
Note. *=Significant difference vs. 24x12m (p<0.05; large ES), #=Significant difference vs.
30x15m (p<0.05; large ES)
The results of distance covered by players in the four speed zones are reported in Table 12.
Statistical analysis highlighted substantial differences between the 24×12m and the 30×15m
court in the first, second and third speed zones (p<0.05; moderate ES). With the 30×15m
court, players covered more distance in the second and third speed zones compared with
24×12m court. However, players covered less distance in the first speed zone with the
30×15m court compared with the 24×12m one. Statistical differences were also found
between the 24×12m and 32×16m court in the second and third speed zones (p<0.05;
moderate ES): with the greatest pitch dimensions (32×16m), players covered more distance in
the second and third speed zones in comparison to the smallest one (24×12m). There were no
substantial differences in the fourth speed zone for all of the experimental conditions.
Table 12
Distances Covered in the Four Speed Zones in Each Experimental Condition of the 3vs3
Court dimensions 1stspeed zone
(m)
2nd
speed zone
(m)
3rd
speed zone
(m)
4th
speed zone
(m)
24×12m 267.0±25.0 526.7±30.8 85.2±46.1 0.4±1.0
30×15m 219.9±22.7* 633.9±65.0* 155.5±71.0* 6.2±11.1
32×16m 230.0±30.5 669.8±80.4* 205.8±77.5* 27.9±35.9
Note. *=Significant difference vs. relative 24x12m (p<0.05; moderate ES)
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There was no significant effect of court dimension on acyclic activities (Table 13).
Table 13
Acyclic Activities in Each Experimental Condition of the 3vs3
Court dimensions Actions Shoots Passes SABA PM Jumps COD
24×12m 34±1 58±5 71±6 15±3 8±2 11±2 7±3
30×15m 29±1 49±3 65±6 4±1 6±1 8±2 6±3
32×16m 28±2 48±4 72±4 6±1 3±1 8±3 4±2
Note. SABA=Stopping attackers with body and arms, PM=Pistons movements toward goal,
COD=Changes of direction.
Finally, there was no effect of court dimension on HR (Table 14)
Table 14
Time Spent in the Heart Rate Zones in Each Experimental Condition of the 3vs3
Court
dimensions
<50% HRrel
(% time)
50%-70% HRrel
(% time)
70%-90% HRrel
(% time)
>90% HRrel
(% time)
24×12m 0.6±0.9 5.0±4.4 40.8±27.4 53.7±31.6
30×15m 2.7±1.1 9.5±9.8 65.1±23.3 22.7±27.7
32×16m 0.6±1.1 3.4±1.6 47.1±37.8 48.9±39.3
Note. HRrel=relative Heart Rate calculated by the Karvonen Formula
The RPE values found during the 32×16m drill were significantly higher compared with the
drill on the 24×12m court (p<0.05; large ES). There was no other significant difference in
RPE (Table 15).
Table 15
Rating of Perceived Exertion’s Values in Each Experimental Condition of the 3vs3
Court dimensions RPE values
24×12m 6.3±0.5
30×15m 7.7±0.8
32×16m 8.2±1.0*
Note. RPE=Rate of Perceived Exertion, *=Significant difference vs. 24x12m (p<0.05; large
ES)
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5.2 Analyses of load and effort in the 4vs4 SSG’s
The results of the distance covered analysis are shown in the Table 16. The only statistical
difference was found between the data obtained during the 4vs4 in the 30×15m and the
24×12m: distance covered by players increased parallel with the court dimensions only
passing by the small court (24×12m) to the medium court (30×15m) (from 948.1±64.5m to
1087.2±92.0m), but not from the medium court to the large one (32×16m) (1079.8±90.6m).
Table 16
Total Distances Covered in Each Experimental Condition of the 4vs4
Court dimensions Total distances (m)
24×12m 948.1±64.5
30×15m 1087.2±92.0*
32×16m 1079.8±90.6
Note. *=Significant difference vs. 24x12m (p<0.05; large ES).
The results of distance covered by players in the four speed zones are reported in Table 17.
Statistical analysis highlighted substantial differences between the 24×12, and the 30×15m
court in the first and third (p<0.05; moderate ES) speed zones. With the 24×12m court,
players covered more distance in the first but less distance in the third speed zone (p<0.05;
moderate ES). Statistical differences were also found between the 32×16m court and the
24×12m one; with larger court dimension, players covered less distance in the first speed zone
but more distance in the third speed zone (p<0.05; moderate ES).
There were no substantial differences in the second and fourth speed zone for all of the
experimental conditions.
Table 17
Distances Covered in the Four Speed Zones in Each Experimental Condition of the 4vs4
Court
dimensions
1stspeed zone
(m)
2nd
speed zone
(m)
3rd
speed zone
(m)
4th
speed zone
(m)
24×12m 227.3±20.1 613.4±66.6 114.1±52.3 3.9±5.9
30×15m 212.0±27.7* 618.6±40.3 242.9±75.0* 19.6±25.4
32×16m 176.3±42.9* 635.1±98.0 289.5±75.2* 13.9±11.1
Note. *=Significant difference vs. relative 24x12m (p<0.05; moderate ES).
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There was no significant effect of court dimension on acyclic activities (Table 18).
Table 18
Acyclic Activities in Each Experimental Condition of the 4vs4
Court dimensions Actions Shoots Passes SABA PM Jumps COD
24×12m 32±2 46±2 78±8 5±1 4±2 6±2 3±2
30×15m 27±1 41±4 75±10 5±1 3±1 6±2 2±2
32×16m 26±2 41±5 74±13 3±2 2±1 5±2 2±1
Note. SABA=Stopping attackers with body and arms, PM=Pistons movements toward goal,
COD=Changes of direction.
Finally, there was no effect of court dimension on HR and RPE values (Tables 19-20).
Table 19
Time Spent in Heart Rate Zones in Each Experimental Condition of the 4vs4
Court
dimensions
<50% HRrel
(% time)
50%-70% HRrel
(% time)
70%-90% HRrel
(% time)
>90% HRrel
(% time)
24×12m 0.9±0.7 3.0±1.0 40.0±26.4 56.1±27.7
30×15m 4.2±3.3 3.9±1.8 47.7±32.8 44.1±33.6
32×16m 3.3±1.9 4.7±3.5 59.1±35.3 32.9±38.7
Note. HRrel=relative Heart Rate calculated by the Karvonen Formula.
Table 20
Rating of Perceived Exertion’s Values in Each Experimental Condition of the 4vs4
Court dimensions RPE values
24×12m 7.7±1.0
30×15m 8.2±1.2
32×16m 7.3±1.2
Note. RPE=Rate of Perceived Exertion
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5.4 Analysis of load and effort of the 3vs3 compared to the 4vs4 SSG’s
The univariate statistical analysis used to compare the total distance covered by players
during 3vs3 respect to the 4vs4, did not underlined significant differences (Table 21).
Table 21
Total Distances Covered During the 3vs3 Compared With the 4vs4
Court dimensions 3vs3 total distances (m) 4vs4 total distances (m)
24×12m 885.2±66.7 948.1±64.5
30×15m 980.0±73.5
1087.2±92.0
32×16m 1095.0±113.0
1079.8±90.6
The multivariate analysis of the distance covered by players in the four speed zones during
3vs3 compared to the 4vs4, showed that only in the 3rd
zones there were significant
differences. Players covered more distances running between 3.4 and 5.2 m/s during the 4vs4
drill respect the 3vs3 one. No differences were found for the other speed zones. (Table 22).
Finally, no differences were found between 3vs3 and 4vs4 conditions regarding the match
analysis and effort’s assessment by HR and RPE survey.
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Table 22
Distances Covered in the Four Speed Zones During 3vs3 Compared With 4vs4
1st
speed zone (m) 2nd
speed zone (m) 3rd
speed zone (m) 4th
speed zone (m)
3vs3 4vs4 3vs3 4vs4 3vs3 4vs4 3vs3 4vs4
24×12 267.0±25.0 227.3±20.1 526.7±30.8 613.4±66.6 85.2±46.1 114.1±52.3* 0.4±1.0 3.9±5.9
30×15 219.9±22.7 212.0±27.7 633.9±65.0 618.6±40.3 155.5±71.0 242.9±75.0* 6.2±11.1 19.6±25.4
32×16 230.0±30.5 176.3±42.9 669.8±80.4 635.1±98.0 205.8±77.5 289.5±75.2* 27.9±35.9 13.9±11.1
Note. *=Significant difference between the 4vs4 value vs. relative 3vs3 value (p<0.05; moderate ES)
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6. Discussion
6.1 Sample analysis
To better understand the findings of this research, first of all we should compare our sample
of handball players with the top elite athletes of this sport. Eight amateur players (age 29±4
years) belonging to an Italian Serie A1 league team (second tier championship in Europe)
were recruited to participate in this study. Players had at least six years of experience in
handball training (four times per-week) and competitions; they also took part in national
championships at the time of the investigation. Analyzing the anthropometric characteristics
of the sample, and comparing them with those of the elite handball players, we can confirm
the non-professional level of the sample: the table below shows the anthropometric
characteristics of our sample compared with those detected by the previous studies on this
topic (Table 23).
Table 23
Comparison of Sample Anthropometric Characteristics With Those of Elite Handball Players
(Ghobadi et al., 2013)
Characteristic Sample References values
Height (cm) 183.7 ± 8.2 190.1 ± 6.8
Weight (kg) 84.5 ± 9.6 92.4 ± 9.8
BMI 25.0 ± 1.85 25.5 ±2.1
Fat mass (% of body weight) 15.7 ±3.9 10.5 ± 5.5 % – 18.1 ± 3.8 %
If we compare our sample’s height and weight values with those of the study of Ghobadi et al.
(2013) about all the players involved in the 2013 Men’s Handball World Championship, the
only differences that we can underline is the greater mean height and weight of the elite
players. Our data about BMI and fat mass of handball players, comply with the mean values
of the handball players who took part to the 2013 Men’s Handball World Championship.
If we compare the main physiological characteristics of our sample with those of the elite
handball players detected in the previous studies, we do not find great differences: the mean
VO2max of our subjects was 53.5 ± 3.3 ml*kg*min-1
and the HRmax reached during exhaustive
incremental endurance test was 182 ± 8 bpm; the previous studies that investigated these
physiological characteristics of handball players, found values of VO2max that range from
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52.8 ± 5.5 ml*kg*min-1
(Chaouachi et al. 2009) to 58.7 ± 0.9 ml*kg*min-1
(Rannou et al.,
2001) and the HRmax reached during incremental endurance test from 191 ± 8 bpm (Sporis et
al., 2010) to 194 ± 5 bpm (Kruger et al., 2013). The only difference in the physiological
values of our sample respect the other studies, is the HRmax reached during the endurance test:
being the HRmax largely affected by the age, probably this little differences in the bpm is due
to the higher mean age of our sample (29.5 ± 4.0 years) respect to the two studies used for the
comparison (26.4 ± 3.8 years, Sporis et al., 2010; 25.9 ± 3.8 years, Kruger et al., 2013).
Finally, comparing the jump and sprint performance of our subjects to the elite players, the
non-professional level of the sample is confirmed. Indeed, the Countermovement Jumps’s
(CMJ) height values found by previous studies on top elite handball players, ranges from 35.9
± 5.3 to 43.9 ± 6.0 cm (Nikolaidis et al., 2015; Michalsik et al., 2014), while in our research
the mean value of CMJ height was 33.2 ± 2.3 cm. Furthermore, the data about time in 20-
meters sprint of the subjects of this research, is higher than those of Haugen et al., (2014): 3.3
± 0.2 sec vs. 2.8 ± 0.1 sec. The differences in all the physical and physiological characteristics
analyzed of our players respect to elite ones are summarized in the table below (Table 24).
Table 24
Differences in the Physical and Physiological Characteristics Between Sample of This
Research and Other Studies
Characteristic Sample References values
Height (cm) 183.7 ± 8.2 190.1 ± 6.8
Weight (kg) 84.5 ± 9.6 92.4 ± 9.8
BMI 25.0 ± 1.85 25.5 ±2.1
Fat mass (% of body weight) 15.7 ±3.9 10.5 ± 5.5 – 18.1 ± 3.8
VO2max (ml*kg*min-1
) 53.5 ± 3.3 52.8 ± 5.5 – 57.0 ± 4.1
HRmax (bpm) 182 ± 8 191 ± 8 – 194 ± 5
CMJ (cm) 33.2 ± 2.3 35.9 ± 5.3 – 43.9 ± 6.0
20-m sprint (sec) 3.3 ± 0.2 2.8 ± 0.1
6.2 3vs3 small-sided handball games
The results from this study about 3vs3 small-sided handball games indicated that the size of
the court affects load and effort of players during the handball SSG’s. In general, almost all of
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the parameters increased in parallel with the increase in court dimensions. Moreover, the
results can help us to describe the main characteristics of SSG’s in handball, with respect to
load and effort of players.
The values of the total distance travelled during the games significantly differed between the
24×12m and 32×16m courts. Indeed, the distance covered by players increased parallel with
the court dimension (Figure 11).
Figure 11. Total distances covered in each experimental condition (court dimension) of the
3vs3 Small-sided handball games. ⃰ =Significant difference vs. 24x12m (p<0.05; large ES)
#=Significant difference vs. 30x15m (p<0.05; large ES)
As expected, with the increasing of the court dimensions, there was also an increase of the
cyclic activities. For the comparison of the present findings, I used the variable “distance
covered per minute”. The total distance covered per minute in this research was 110.7 m.min-
1 in a game with a 24×12m court, 122.5 m.min-1 in a game with 30×15m court and 136.9
m.min-1 on the 32×16m court. These values are much higher than the values obtained in a
match on normal handball court. The normal values vary from 79.8m.min-1 (Bon, 2001) to
87.5m.min-1 (Pori et al., 2009). However, the data is similar to the data obtained in the soccer
SSG’s (Barbero-Alvarez et al., 2007; Pereira Da Silva, Kirkendall & Leite De Barros Neto,
2007). It is obvious that the short duration of the games and the reduced number of players in
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SSG’s allow participants to perform a relatively high amount of cyclic movements in a short
period. This kind of argument is also supported by the data obtained by Buchheit (Buchheit,
et al., 2009b). Players covered in average 154m/min in the 4vs4 handball game on the regular
court in 2×225sec periods. This means there was more space per player than there was in the
previous research and, as a consequence, there was a greater amount of distance covered. As
there were different match analysis systems being applied in these studies, any comparisons
of the results should be done with caution (Randers, Mujika, Hewitt, Santisteban,
Bischoff, Solano, Zubillaga, Peltola, Krustrup & Mohr, 2010).
When analysing cyclic movements divided into the four speed zones, we observed a small
amount of fast running and sprinting, (in the highest speed zone). This might be due to the
fact that with less space available for each player, players lack the possibility of accelerating
and increasing their running speed; indeed, data regarding distance covered by the players in
the 2nd and 3rd speed zones (run and fast run) has grown with the increasing of court
dimensions (24×12m vs. 32×16m court) (Figure 12). Similar data were reported also from a
soccer SSG’s study (Castellano & Casamichana, 2010).
We determined there were no statistical differences occurring among the acyclic activities,
during games on all three court dimensions. However, even though not statistically
significant, differences occurred in the number of stopping attackers with body and arms
(defensive actions) (medium phi ES=0.33). The greater occurrence of these actions was in the
game with 24×12m court compared with the 32×16m court. As there was an increase in the
defensive activities on a smaller SSG’s court, this can be considered as a consequence of the
smaller area per player, which causes a greater proximity to the opponents and hence higher
probability for physical contact. In comparison with the data provided by Póvoas et al. (2012),
during a normal handball game, our data revealed a higher number of jumps per minute
[9±2.9 (1.12/min) vs. 16.8±6.14 (0.28/min)]. In soccer (Tessitore et al., 2006; Kelly & Drust,
2009) very few differences in acyclic activities, such as passing, receiving, dribbling
interceptions and headings, were found in response to change of court dimensions. However,
Kelly and Drust (2009) found a high number of tackles and shots with a smaller court. The
increasing number of tackles on the smaller SSG’s court has been attributed to the previous
factors, i.e. the smaller area per player gives the opportunity for more body contact. Even if I
could not confirm these significant differences amongst all of the three courts in regards to
shots, it is interesting that in handball SSG’s, players also execute more shots during a game
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on a smaller court. This can be justified by proximity of goals, which can lead the players to
make more frequent attempts to goal (Aguiar et al., 2012).
Figure 12. Distances covered in the four speed zones in each experimental condition of the
3vs3 small-sided handball games; *=Significant difference vs. relative 24x12m speed zone
(p<0.05; moderate ES).
There was no effect of court dimensions on HR. In other cases, such as studies of rugby
(Gabbett et al., 2012a) and soccer (Aroso et al., 2004; Da Silva et al., 2011; Köklü et al.,
2011; Rampinini et al., 2007) some differences were observed. These studies highlighted the
increase of distance covered and HR values of the players parallel with the increase of court
dimensions. Only two studies, to the author’s knowledge, found an inverse trend with the HR
values that increased with the decrease of the court dimensions (Katis & Kellis, 2009;
Tessitore et al., 2006). As with our research, there were two other studies that found no
difference with the changes of court dimensions. This was probably due to the age of the
subject being low (Jones & Drust, 2007) and to the limited sampling (Kelly & Drust, 2009).
Furthermore, we have to consider that HR is only a partial measure of load, and sometimes it
may not be sufficiently sensitive to differences in actual metabolic demands, especially in
handball SSG (Buchheit et al., 2009b).
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During the eight-minute SSG’s, the players reached near to maximal HR (>90% of HRmax) for
42 ± 12% of total time (Figure 13). This data underlines the high intensity of the SSG’s drills
in comparison with a normal match. Indeed, the study of Póvoas et al. (2011), showed that
during handball matches, the players effective mean HR (considering only the effective time
spent by the players on the field) is around 82 ± 9.3 % of HRmax. Comparing our data with the
relative HR found by Kruger et al., (2013), in the different playing positions (85.2 ± 5.8 % for
wings, 86.4 ± 1.8 % for backs and 83.4 ± 1.0 % of HRmax for pivots), the high intensity of
SSG’s analyzed in our study is confirmed. Furthermore, during the matches, the players HR
are “only” for the 10% of the 1st half and for the 4% of 2nd half above 90% of HRmax (Póvoas
et al., 2012). In longer bouts of SSG’s, (10 or 15 minutes), the players might be forced to
reduce the intensity of playing to achieve a more normal match intensity.
Figure 13. Time spent in the different Heart Rate zones in each experimental condition of the
3vs3 small-sided handball games
Obviously a comparison between data showed by this research and handball player’s HR
values during the normal match, should be made with caution. As previous studies revealed,
during team sports players adopt pacing strategies; this can modify the HR activities over a
longer period as in an entire match (Aughey, 2009; Mugglestone, Morris, Saunders
& Sunderland, 2013; Gabbett, Walker B. & Walker, S., et al., 2015; Sampson et al., 2015).
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Certainly the high HR values found were due to the high amount of “distance covered per
minute”, high incidence of jumps, change of direction and consequent stops after high
intensity actions (typical handball actions). If we consider that exercising >85% HRmax might
be enough to improve maximal cardiovascular function, and in turn, VO2max and the
anaerobic threshold (Helgerud, Engen, Wisloff & Hoff, 2001; Impellizzeri et al., 2006), the
SSG’s used here may be useful for improving the aerobic endurance of the handball players.
Another important comparison of our HR data could be done with the previous two studies on
small-sided handball games (Buchheit et al., 2009b; Iacono et al., 2015). The data emerged
from these two studies underlined a higher impact of small-sided games on the handball
player’s HR mean values: 92.3% of HRmax (range 89.0 - 95.6% of HRmax) in the study of
Buchheit et al. (2009) and from 91.6% to 93.1% of HRmax in the study of Iacono et al. (2015).
We can compare these data with our HR values of the 3vs3 with 32×16 court dimension,
where the space available for each players (64sqm) are similar with those of Buchheit et al.
(80sqm) and Iacono et al. (66sqm). During our 3vs3, the Heart Rate’s players were higher
than 90% of HRmax for about 33% of the drill time (about 160’’). The experimental protocol
of the two previous studies was based on different small-sided games bout with different
duration: from 145’’ (Iacono et al., 2015) to 225’’ (Buchheit et al’, 2009b). Thus, the total
time passed with HR values higher than 90% of HRmax of our players are completely
comparable with the drills duration of the two previous research. Obviously, our players had
to adopt pacing strategies to cope with a 8-min duration drill respect the 2×225’’ with 30’’ of
passive rest of Buchheit et al. (2009b) and the 5×145’’-190’’ with 1’ of passive rest of Iacono
et al. (2015).
The further analysis of effort using the RPE scale showed a greater value for the 32×16m
court drill compared with the 24×12m. These differences underlined a general increase of
values with the increase of the court dimensions (Figure 14). Similar results were also
reported in two studies of SSG’s in soccer, i.e. the lower RPE values corresponded to the
smaller court (Rampini et al., 2007; Castellano & Casamichana, 2010). The increasing of the
RPE with the increasing of space available for each player, without the same trend
emphasized by the HR, was also found by a rugby study by Kennett et al., (2012). Probably,
the observed dissociation between RPE and HR could be related to greater variability of RPE
compared with HR (Hill-Haas et al., 2008). The RPE also have a multifunctional nature,
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which is mediated not only by physiological but also by psychological factors (Borg et al.,
1987; Morgan, 1994).
Figure 14. Rating of perceived exertion’s values (RPE) in each experimental condition of the
3vs3 small-sided handball games; *=Significant difference vs. 24x12m (p<0.05; large ES)
Finally, comparing our results with those of Buchheit et al. (2009b), we found a higher values
of RPE on the 32×16 court (the only that was similar to the abovementioned study for single
player’s pitch space). This difference (8.2±1 vs. 6.3±0.5), could be due to the brief rest of 30
seconds inserted in the study of Buchheit, which allowed players to recover. Nevertheless,
comparisons between these two studies have to be made carefully, because of the differences
in the experimental procedures.
6.3 4vs4 small-sided handball games
Analysing the results of this study about 4vs4 handball SSG’s, the first aspect that emerges is
that the trend highlighted during the 3vs3 survey, is confirmed for almost all parameters.
Indeed, this part of the research, like the first one on 3vs3 SSG’s, underlined the fact that the
parameters analyzed increased in parallel with the increase of court dimensions.
First of all, the data about total distance covered by players during 4vs4 confirmed that with
more space available, players covered more distance. In particular, statistical differences
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appear between data of 4vs4 played on the 24x12m and 4vs4 played on the 30x15m pitch
dimensions (Figure 15).
Figure 15. Total distances covered in each experimental condition (court dimension) of the
4vs4 Small-sided handball games; ⃰ =Significant difference vs. 24x12m (p<0.05; large ES).
Like for the 3vs3 analysis, for the comparison of the 4vs4 findings, we used the variable
“distance covered per minute”. The total distance covered per minute during the 4vs4
experimental sessions was 118.5 m.min-1 in a game with a 24×12m court, 135.9 m.min-1 in a
game with 30×15m court and 135.0 m.min-1 on the 32×16m court.
Comparing these values obtained during 4vs4 SSG’s with those of normal handball match
(from 79.8m.min-1, Bon, 2001, to 87.5m.min-1, Pori et al., 2009), we can assure that during
these type of drills, players have to covered more distance per minute respect to an handball
match played on regular court. Other than regular court handball match, we can compare data
obtained during 4vs4 with the only previous study on handball that reproduce similar
experimental situation (Buchheit et al., 2009b). In this study, the author analyzed 2x225sec
periods of 4vs4 on normal handball court; one of the results was a distance covered per
minute by the players of 154m/min that, compared with our results, underlined once again the
increased of cyclic movement parallel with the increase of space available for each player.
Also in this case, like for the 3vs3 results, it is very important make any comparisons of data
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with caution (Randers et al., 2010). Different match analysis systems applied could led to
different results.
Data about cyclic movements divided into the four speed zones, highlighted the fact that
during 4vs4, with the increasing of space available, the distance covered by players running
(3.4-5.2m/s) increases (Figure 16). Indeed, statistical differences were found in the third speed
zones between 24x12m and 30x15m court dimensions, and between 24x12m and 32x16m
court dimensions. Another data that emerges from the research on 4vs4 is that in the 24x12m
court dimensions, player covered more distances in the first speed zone (walking or standing
still); this means that, not being any differences in the second and fourth speed zones, the less
distance covered by players running (third speed zone) during 4vs4 in the 24x12m court
dimensions is “replaced” from more distance walking or standing still (first speed zone). This
trend, highlighted by the analysis of cyclic movements divided into the four speed zones, is
confirmed by the previous study on 3vs3 small-sided-handball games and also from a soccer
SSG’s study (Castellano & Casamichana, 2010).
Figure 16. Distances covered in the four speed zones in each experimental condition of the
4vs4 small-sided handball games; *=Significant difference vs. relative 24x12m (p<0.05;
moderate ES)
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Differently, no statistical differences were found during the analysis of acyclic movements.
Technical parameters like number of passes, shoots, actions, pistons movements, defensive
actions, and physical parameters like number of jumps and changes of direction, didn’t
change in response to different court dimensions. Other studies showed this trend also in
others sports: Tessitore et al. (2006), Kelly and Drust, (2009) found very few differences in
acyclic activities, such as passing, receiving, dribbling interceptions and headings, in response
to change of court dimensions.
No statistical differences were found also in the analysis of HR during 4vs4 handball small
sided games (Figure 17).
Figure 17. Time spent in the different Heart Rate zones in each experimental condition of the
4vs4 small-sided handball games.
Other two researches like this one, found no differences in HR values during small sided
games in response to different court dimensions (Jones & Drust, 2007; Kelly & Drust, 2009).
Probably this trend is due to the same reasons: we have to consider that HR is only a partial
measure of load, and sometimes it may not be sufficiently sensitive to differences in actual
metabolic demands, especially in handball SSG (Buchheit et al., 2009b); this fact, joint with
the limited sampling of the study and the great variability of the HR measures, were probably
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the reasons of the results obtained in this part of the research on 4vs4 small-sided-handball
games. However, like in the 3vs3 analysis, we have to consider very interesting the average
data emerges from the HR survey: the players reached near to maximal HR (>90% of HRmax)
for 44%±11% of total time (Figure 17); this data, compared with a normal match (82%±9.3%
of HRmax) underlined another time the high intensity of 4vs4 handball small sided games.
Obviously, comparing normal match data with the data of this research on 8-min bouts of
4vs4, we have to be careful because of pacing strategy that players adopt in all the team sports
(Aughey, 2009; Mugglestone et al., 2013; Gabbett et al., 2015; Sampson et al., 2015).
The further analysis of effort of players during 4vs4 small-sided-handball games confirmed
the trend of HR values, showing no statistical differences in the RPE values among the three
different court dimensions.(Figure 18).
Figure 18. Rating of perceived exertion’s values (RPE) in each experimental condition of the
4vs4 small-sided handball games.
Comparing our results with those of Buchheit et al. (2009b), we found higher values of RPE
even thought players during our study had less space available respect to the research of
Buchheit. This difference (7.7±0.4 vs. 6.3±0.5), could be due to the brief rest of 30 seconds
inserted in the study of Buchheit, which allowed players to recover.
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6.4 Comparison of the two type of small-sided-handball games
Other then the analysis of load and effort of 3vs3 and 4vs4 small-sided-handball games, one
of the aims of this research was the comparison of these two type of drills. Fixed the court
dimensions, with the increase of number of players and consequent decrease of space
available for each players, our expectations were to find statistical difference between the
parameters analyzed. The trend that emerged from the results was different.
Starting from the cyclic movements, the complex analysis for the comparison of the two type
of drills, doesn’t found statistically significant differences in the total distance covered by
players during the 8-min drill (Figure 19). No studies on handball were made about
differences in SSG’s with different space available for each player. Thanks to the analysis of
the study of Buchheit (2009b) on 4vs4 played in normal court, we deduced, by the
comparison with our study on 3vs3 and 4vs4 small-sided-handball games, that distance
covered by players increased parallel to the space available.
Figure 19. Comparison of total distance covered by players during 3vs3 and 4vs4 small-sided
handball games.
Probably the little difference of space available for each player between the 3vs3 and 4vs4
drills was not enough to create statistical differences among these two experimental condition.
Indeed the differences in space available were of 8sqm in the 24x12m drill, 11sqm in the
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30x15m drill and 13sqm in the 32x16m drill. The singles analysis of 3vs3 and 4vs4 confirmed
this aspect: statistical differences in total distance covered were found only where the
difference in space available for each player was 17sqm (24x12m vs. 30x15m in the 4vs4
drill), 20sqm (24x12m vs. 30x15m in the 3vs3 drill) or 28sqm (24x12m vs. 32x16m in the
3vs3 drill). In the study of Buchheit (2009b), the space available for each player was 80sqm,
so the differences with our experimental condition range from 16sqm to 52sqm. Being
difficult a comparison of two different study, with two different experimental procedure, an
interesting future study could be a comparison of two small-sided-handball games where the
space available for each player differs of more than 50sqm.
The multivariate analysis of the distance covered by players in the four speed zones during
3vs3 compared to the 4vs4, showed that only in the 3rd
zones there were significant
differences. Players covered more distances running between 3.4 and 5.2 m/s during the 4vs4
drill respect the 3vs3 one. No differences were found for the other speed zones. (Figure 20).
Figure 20. Distance covered in the four speed zones during 3vs3 compared to 4vs4;
*=Significant difference vs. relative 3vs3 court dimensions (p<0.05; moderate ES)
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This data about statistical differences in the third speed zones between 3vs3 and 4vs4 in all
experimental condition (court dimensions), could means that to vary the distance covered
running by players, needs only 8sqm of difference in the court dimensions. The interesting
data is that, contrary to expectations, less space for each player led to more distance covered
running by players.
The reason of this inverse trend respect to the single analysis of 3vs3 is probably due to the
role of the fourth player added in the 4vs4 drills respect to the 3vs3 ones. Indeed, the fourth
player was a pivot that, playing on the six meters line, doesn’t “steal” space to others players.
Furthermore, having a pivot in the opponent defence, other players during counterattack can
pass him the ball and run more easily.
The analysis of acyclic movements did not showed statistically significance differences
(Table 25).
Table 25.
Acyclic Activities in 3vs3 Comparing With 4vs4 Condition
24x12m 30x15m 32x16m
3vs3 4vs4 3vs3 4vs4 3vs3 4vs4
Action 34±1 36±1 30±1 26±0 30±1 28±1
Passes 72±9 69±5 67±9 79±16 72±4 9±4
SABA 16±1 6±0 4±1 6±1 5±1 2±1
PM 10±3 3±1 7±1 4±2 3±1 2±1
Jumps 12±2 6±2 8±3 7±4 8±3 7±2
COD 8±3 3±2 5±3 3±2 4±2 2±1
Note. SABA=Stopping attackers with body and arms, PM=Pistons movements toward goal,
COD=Changes of direction.
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Our expectations, as in the 3vs3 and 4vs4 individual analysis, were that with less space
available for each player, parameters like defensive actions and changes of direction were
increased. Indeed a consequence of the smaller area per player, should be a greater proximity
to the opponents and hence higher probability for physical contact and changes of direction.
Furthermore, with one more player for each team in the 4vs4 respect to the 3vs3, we thought
to find greater number of passes during the drill. The no statistical differences found in the
two experimental conditions is probably due to the low number of count for some parameters
like defensive actions (stopping attackers with body and arms) and pistons movements
towards goal; this distribution of data had created some issues during the statistical analysis
with Chi-square test. So, like for the separate analysis of 3vs3 and 4vs4, also comparing the
two type of drills, seems that the modification of space available for each players doesn’t
influence the number of technical parameters or physical activity like jumps and changes of
direction.
The final comparison that we made between the effort of players during 3vs3 and 4vs4 small-
sided handball games, did not highlighted statistical differences. Specifically, the HR values
did not differ in the two experimental conditions (Figure 21).
Figure 21. Heart Rate values during 3vs3 compared to 4vs4 small-sided handball games.
0
10
20
30
40
50
60
70
80
90
100
3 vs 3 4 vs 4 3 vs 3 4 vs 4 3 vs 3 4 vs 4
24x12 30x15 32x16
% o
f to
tal d
rill
tim
e
HR 50
HR 70
HR 90
HR 100
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Also in this case, like in the single analysis of 3vs3 and 4vs4, the great variability of HR
values and the little sample dimension, led to a big standard deviation in the data of this part
of the study.
Finally, the analysis of Rate of Perceived Exertion’s values, underlined a different trend
respect to the separate analysis of the two type of drills. Indeed, as long as in the analysis of
3vs3 and 4vs4 the RPE values increased significantly parallel with the space available for
each players, in the comparison of 3vs3 with 4vs4, this trend did not appear (Figure 22).
Figure 22. Rating of perceived exertion’s values during 3vs3 compared to 4vs4 small-sided
handball games.
The fact that, with less space available in the 4vs4 respect to the 3vs3, were not found lower
RPE values, was probably due to the little difference of space available for each player in the
two experimental condition (8-17sqm vs. 20-37sqm). Furthermore, once again, the fourth
player added in the 4vs4 respect to the 3vs3, was a pivot: this role normally plays on the 6-
meter line so he did not “steal” so much court space to the others players.
0
1
2
3
4
5
6
7
8
9
10
3 vs 3 4 vs 4 3 vs 3 4 vs 4 3 vs 3 4 vs 4
24x12 30x15 32x12
RP
E va
lue
s
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7. Conclusion
7.1 Conclusions and practical implications
With the aim of understand in the best way the various results obtained from this study, we’ll
analyse the Hypothesis made at the beginning of this research:
H01: Among 3-a-side drills there are no statistical significant differences in distances covered
(amount of cyclic activities) by players during the game.
H02: Among 3-a-side drills there are no statistical significant differences in intensity of cyclic
activities performed by players during the game
H03: Among the 3-a-side drills there are no statistical significant differences in frequency of
acyclic activities performed by players during game
H04: Among the 3-a-side drills there are no statistical significant differences in relative heart
rate and RPE values.
Except for the H03 and the H04, that was only partially disproved, the other two null
Hypothesis were rejected. Indeed, our study underlined direct relationship between space
available for each player during 3vs3 small-sided handball games and distance covered by
players, RPE values and distance covered running by players.
H05: Among 4-a-side drills there are no statistical significant differences in distances covered
(amount of cyclic activities) by players during the game.
H06: Among 4-a-side drills there are no statistical significant differences in intensity of cyclic
activities performed by players during the game
H07: Among the 4-a-side drills there are no statistical significant differences in frequency of
acyclic activities performed by players during game
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H08: Among the 4-a-side drills there are no statistical significant differences in relative heart
rate and RPE values.
Like for the 3vs3 analysis, also in the 4vs4 survey the H07 about acyclic activities was not
disproved and the H05 and the H06 were rejected, showing the same direct relationship
between space available for each player and the above parameters of cyclic activities.
Differently from the 3vs3 analysis, in the 4vs4 experimental condition, the H08 was totally not
disproved because no differences were found in the three different court dimension’s drills in
the HR and RPE values.
H09: There are no statistical significant differences in distances covered (amount of cyclic
activities) by players between 3-a-side and 4-a-side drills.
H010: There is no statistically significant difference in intensity of cyclic activities performed
by the players between 3-a-side and 4-a-side drills.
H011: There is no statistically significant difference in frequency of acyclic activities
performed by players between 3-a-side and 4-a-side drills.
H012: There is no statistical difference in relative heart rate data recorded and RPE values
between 3-a-side and 4-a-side drills.
The final part of this research, with the last four null Hypothesis, underlined the fact that little
differences in the space available for each player during small-sided handball games, does not
influence load and effort of players. Indeed, only the H010 was refused while the other three
null Hypothesis were not rejected. Furthermore, regarding the H010, statistical differences
were found only for the third speed zones, with more distances covered running by players
during 4vs4 respect to the 3vs3 drills. As already mentioned, this no finding of differences
between 3vs3 and 4vs4 is probably due to two reasons:
1) Differences in space available for each players (8-17sqm), was not so much to find statistical
differences between the two experimental condition; in the singles analysis of 3vs3 and 4vs4,
differences in space available differed from 20 to 37sqm.
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2) The fourth player added to the 4vs4 respect to the 3vs3 was a pivot: this role, playing on the
six-meter line, does not “steal” so much space of the other players, minimizing in this way
differences in space available for each player between the 3vs3 and 4vs4
On the basis of previous discussion, we can conclude that findings emerged from the first of
this research (separate analysis of 3vs3 and 4vs4), regarding the load and effort to which the
handball players were exposed during the SSG’s drills, are certainly helpful for handball
coaches and athletic trainers wishing to use specific training methods. The high ratio of cyclic
activity per minute and the high HR values recorded make this type of drills extremely useful
for aerobic power training. The presence of a large number of jumps makes the SSG’s, in
particular on the 24×12m court, useful also for training jump ability in fatigue condition. The
little space available for the players might limit the expressions of high speed of run, so it is
also advisable to use the regular handball court to do the SSG’s, with the aim of allowing
players to express their maximum speed. Furthermore, because of the great number of
defensive activities, the 24×12m court SSG’s might be useful in developing the 1vs1 skill of
handball players. Considering the great amount of shooting for goals reported, SSG’s with all
the three court dimensions are useful in developing the goal making ability of handball
players in circumstances of general fatigue.
Analysing the comparison of the two small-sided handball games the most important findings
was that little differences in the court dimensions does not influence the parameters
investigated of load and effort of players. This means that if coach, on the basis of the goal of
the training session, wants to vary the training stimulus, he have to modify the space available
for each players of more than 20sqm.
7.2 New relevant findings
This study was the first that investigated differences in two type of small-sided handball
games by the means of a GPS technology. For this reason, two particular findings are
important for the scientific community: data about total distance covered by players, and data
about distance covered by players in the four speed zone. The analysis of cyclic activities
underlined for both the drills (3vs3 and 4vs4) significant differences in total distance covered
by players in the 3 experimental condition (3 court dimensions). Thus, the first relevant
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finding of this study is that more space available for each players, led to an increase in the
total distance covered (table 11 and 16).
Table 11
Total distances covered in each experimental condition of the 3vs3
Court dimensions Total distances (m)
24×12m 885.2±66.7
30×15m 980.0±73.5*
32×16m 1095.0±113.0*#
Note. *=Significant difference vs. 24x12m (p<0.05; large ES), #=Significant difference vs.
30x15m (p<0.05; large ES)
Table 16
Total Distances Covered in Each Experimental Condition of the 4vs4
Court dimensions Total distances (m)
24×12m 948.1±64.5
30×15m 1087.2±92.0*
32×16m 1079.8±90.6
Note. *=Significant difference vs. 24x12m (p<0.05; large ES).
Furthermore, the analysis of distance covered by players in the different four speed zones,
highlighted the fact that, in particular during 3vs3, more space available led to more distance
covered running (table 12 and 17).
Table 12
Distances Covered in the Four Speed Zones in Each Experimental Condition of the 3vs3
Court dimensions 1stspeed zone
(m)
2nd
speed zone
(m)
3rd
speed zone
(m)
4th
speed zone
(m)
24×12m 267.0±25.0 526.7±30.8 85.2±46.1 0.4±1.0
30×15m 219.9±22.7* 633.9±65.0* 155.5±71.0* 6.2±11.1
32×16m 230.0±30.5 669.8±80.4* 205.8±77.5* 27.9±35.9
Note. *=Significant difference vs. relative 24x12m (p<0.05; moderate ES)
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Table 17
Distances Covered in the Four Speed Zones in Each Experimental Condition of the 4vs4
Court
dimensions
1stspeed zone
(m)
2nd
speed zone
(m)
3rd
speed zone
(m)
4th
speed zone
(m)
24×12m 227.3±20.1 613.4±66.6 114.1±52.3 3.9±5.9
30×15m 212.0±27.7* 618.6±40.3 242.9±75.0* 19.6±25.4
32×16m 176.3±42.9* 635.1±98.0 289.5±75.2* 13.9±11.1
Note. *=Significant difference vs. relative 24x12m (p<0.05; moderate ES).
For the first time, thanks to the results of this study, we were able to understand what should
be the differences in space available for each player to induce change in load and effort of
handball players during small-sided games: differences of 13 sqm or less do not led to
changes in load and effort of handball players; instead, differences of 17 sqm or more, could
induce changes in the load and effort of handball players.
Another important aspect that has to be underlined in this study is the importance of Small-
Sided games training for professional adult handball players. Is a common practice in the
team sport world, adopt small-sided games as a training stimulus, only with youth athletes.
Many times, with adult players, non-specific training methods as intermittent running
exercise, are preferred. Indeed, the great part of researches on small-sided handball games
previous mentioned (Buchheit et al., 2009a; Buchheit et al., 2009b; Clemente & Rocha, 2014;
Moss & Twist, 2015), were made on youth athletes or high school students.
Concluding, in this study was emphasized the high intensity of small-sided handball games
that, joint with the specific stimulus of play handball in different court dimensions, makes
these type of drill very useful also for professional adult handball players.
7.3 Proposals for further researches and views for the future
Starting from the interesting findings of this research, future studies could be focused on the
same parameters with a bigger sample dimensions. Indeed, the limit of this study was
certainly the sample, because the low number of subjects influenced the successive statistical
analysis. Studies with more subjects could normalize the results, with the consequent
possibility of underline new differences between the experimental conditions.
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Interesting new studies, as already done for other team sports, could be focused on differences
in load and effort of players in response to different rules during small-sided handball games
(i.e. dribbling not allowed). Another parameters that was not considered in this study is the
encouragement of the coach during drills: the study of Rampinini et al. (2007) demonstrated
that coach encouragement during small-sided soccer drills can modify the effort of players.
No studies on handball were made on this particular modification of small-sided-games but
could be very interesting investigate the modification of load and effort of players in response
to the coach encouragement in a close environment like the handball court.
Regarding the space available for each player, future studies could try to understand the size
limits of court dimensions during small-sided handball games: maybe with too large court
dimensions, the effort of players may start to decrease so it could be very interesting
understand if there is this size limit. Also the tactical aspects of the role of the players
engaged during small-sided handball games, could be investigated: maybe the presence of the
pivot instead of one wing, could influence some parameters of load and effort of handball
players.
Finally, being nowadays the SSG’s one of the most used tools to increased handball players
fitness capacity, future studies could be interested on a comparison of this training method
with the non-specific running drills.
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Ključne besede: rokomet; obremenitve in napor; prirejene igre; video analiza; globalni sistem
pozicioniranja (GPS).
Matteo Corvino
ANALIZA OBREMENITVE IN NAPORA ROKOMETAŠEV PRI PRIREJENIH IGRAH
GLEDE NA PROSTOR IN ŠTEVILO IGRALCEV
POVZETEK
Cilji. Namen raziskave je bil ugotoviti vpliv treh različnih dimenzij igrišča na razlike, ki
nastanejo v nekaterih pokazateljih napora in obremenitve igralcev rokometa kadar igrajo tekme s
prirejenimi pravili na manjšem prostoru v razmerju igralcev 3 proti 3 in 4 proti 4 z vratarjem.
Metode. Vzorec merjencev je sestavljalo osem moških amaterskih rokometašev (28 ± 3 leta,
razpon 24–33 let). Po posebej pripravljenem protokolu so odigrali 8-minutne rokometne tekme
na treh različno velikih igriščih. V enem eksperimentalnem primeru so bile ekipe sestavljene iz
treh igralcev v polju in vratarja (3 proti 3), v drugem primeru pa iz štirih igralcev v polju in
vratarja (4 proti 4). Vsaka tekma s predvidenim številom igralcev je bila na posameznem igrišču
v določenem časovnem sosledju odigrana dva-krat (skupaj je bilo odigranih 12 tekem).
Dimenzije igrišč so znašale 12×24m za manjše, 30×15m za srednje in 32×16m za večje igrišče.
S pomočjo naprave za globalni sistem pozicioniranja - GPS (SPI pro elite 15hz, GPSports) ter s
pomočjo video analize, merilcev srčnega utripa in posebnega vprašalnika so bile zabeležene
naslednje skupine parametrov: ciklična in aciklična gibanja, srčni utrip ter ocena zaznanega
napora.
Rezultati. Pri analizi skupno opravljene razdalje smo na tekmah 3 proti 3 ugotovili značilne
razlike med vsemi tremi igrišči (p<0.05; velik ES). Na tekmah 4 proti 4 pa se je značilna razlika
pojavila samo med igriščema dimenzij 24×12m in 30×15m (p<0.05; velik ES). Pri analizi
opravljenih razdalij v štirih hitrostnih območjih (0-1,4 m/s; 1,4-3,4 m/s; 3,4-5,2 m/s; >5,2 m/s) so
bile ugotovljene značilne razlike v naslednjih eksperimentalnih pogojih: na tekmah z razmerjem
igralcev 3 proti 3 so igralci na igrišču dimenzij 30×15m v primerjavi z igriščem 24×12m opravili
manjšo razdaljo v prvem hitrostnem območju in večjo razdaljo v drugem in tretjem hitrostnih
območjih (p<0,05; srednji ES). Značilne razlike so bile pri igri 3 proti 3 ugotovljene tudi pri
primerjavi igre na igriščih dimenzij 24×12m glede na igrišče 32×16m: igralci so opravili večjo
razdaljo na igrišču 32×16m v drugem in tretjem hitrostnem območju (p<0.05; srednji ES).
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Podobni rezultati so bili zabeleženi tudi na tekmah z razmerjem igralcev 4 proti 4. V teh
eksperimentalnih pogojih so na igrišču dimenzij 24×12m igralci dosegli značilno višje vrednosti
opravljenih razdalij v prvem hitrostnem razredu in značilno nižje vrednosti v tretjem hitrostnem
razredu v primerjavi s tekmami odigranimi na igriščih drugih dveh dimenzij (p<0.05; srednji
ES). Na osnovi dobljenih podatkov pa ni bilo možno potrditi statistično značilnega vpliva
različnih dimenzij igrišča na frekvenco pojavljanja tehnično-taktičnih elementov (število
moštvenih akcij, podaj, strelov, zaletov proti vratom in obrambnih akcij), specifičnih rokometnih
skokov, sprememb smeri gibanja in na frekvenco srca v različnih območjih napora. Ta
ugotovitev velja tako za igro 3 proti 3 kot za igro 4 proti 4. Ocena stopnje zaznanega napora je
bila na tekmah 3 proti 3 značilno višja na igrišču 32×16m v primerjavi z igriščem 24×12m
(p<0,05; veliki ES). Na tekmah z večjim številom igralcev (4 proti 4) pa dimenzija igrišča ni
imela značilnega vpliva na oceno zaznanega napora (RPE). Primerjava podatkov dobljenih na
tekmah v obeh eksperimentalnih pogojih (3 proti 3 in 4 proti 4) na igriščih vseh treh dimenzij je
pokazala, da ni značilnih razlik v skupni opravljeni razdaliji. Značilne razlike pa so se pokazale v
tretjem hitrostem razredu, kjer je bila višja vrednost dosežena pri igri 4 proti 4 na vseh treh
igriščih (p<0.05; srednji ES). Ni pa bilo značilnih razlik v frekvenci pojavljanja tehnično-
taktičnih elementov, v specifičnih rokometnih skokih, spremembah smeri gibanja, v frekvenci
srčnega utripa in v oceni zaznanega napora (RPE).
Zaključki. - Naše ugotovitve kažejo, da se s spreminjanjem dimenzij igrišča pri prirejenih
rokometnih igrah glede na prostor in število igralcev, spremenijo tudi nekateri prametri, ki
odražajo napor in obremenitev igralcev. Zato se takšne igre lahko ciljno uporabljajo pri treningu
rokometašev.
Ključne besede: rokomet; obremenitve in napor; prirejene igre; video analiza; globalni sistem
pozicioniranja (GPS).
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Matteo Corvino
ANALIZA OBREMENITVE IN NAPORA ROKOMETAŠEV PRI PRIREJENIH IGRAH
GLEDE NA PROSTOR IN ŠTEVILO IGRALCEV
9. OBSEŽEN POVZETEK V SLOVENŠČINI
9.1 UVOD
V devetdesetih letih prešnjega stoletja se je, skladno s trendi v nekaterih drugih športnih igrah,
začel pospešeni razvoj raziskovalnega dela na področju proučevanja različnih vidikov
rokometne igre in treninga. Predvsem pojav novih tehnologij je omogočal večjo natančnost in
zanesljivost pridobljenih podatkov ter s tem tudi višjo stopnjo uporabnosti v praksi. Tako se je
povečalo število raziskav, ki so obravnavale frekvenco pojavljanja različnih strukturnih prvin
igre ter različne vidike obremenitev in napora rokometašev med igro. Nove tehnologije so, ob
klasičnem zbiranju podatkov o naporu igralcev med tekmo (npr. frekvenca srčnega utripa in
vsebnost laktata v krvi), dovoljevale tudi hkratno zbiranje podatkov o tem kakšne razdalje in
ob kakšnih htrostih pretečejo in prehodijo igralci med igro. Tako je bila leta 2002 v
mednarodnem prostoru objavljena prva raziskava, ki je obravnavala obremenitve rokometašev
(količina opravljenih razdalij v različnih hitrostnih razredih) z natančno in zanesljivo
računalniško in video tehnologijo (Perš idr., 2002). Avtorji so na modelni tekmi izmerili
povprečje pretečenih in prehojenih razdalij, ki je znašala 4800 m in sicer je znašal delež
sprintov (hitrost >5.2 m/s) 7% igralnega časa, delež hitrega teka (hitrost 5.2<3.0 m/s) je znašal
25% igralnega časa, 31% je bilo počasnega teka (hitrost 3.0<1.4) in 37% hoje ali stanja na
mestu (hitrost <1.4m/s). Omenjeni študiji so sledile mnoge druge v katerih so avtorji s
pomočjo video in računalniške tehnologije analizirali taktične in tehnične vidike rokometne
igre ter obremenitve igralcev med tekmo (Moncef idr., 2011; Bilge, 2012; Oliveira idr., 2012;
Gutiérrez Aguilar idr., 2012; Póvoas idr., 2012; Gutiérrez in Ruiz, 2013; Manchado idr.,
2013; Michalsik idr., 2014a; Michalsik in Aagaard, 2014; Karcher in Buchheit, 2014; Póvoas
idr., 2014a; Póvoas idr., 2014b; Michalsik idr., 2014b; Krüger idr., 2014; Wagner idr., 2014;
Michalsik in Aagaard, 2015; Michalsik idr., 2015a; Michalsik idr., 2015b). Glede na to, da je
rokomet šport, ki je sestavljen iz visoko intenzivnih akcij prepletenih z obdobji manj
intenzivnih akcij in relativnega počitka so raziskovalci tudi skušali preučiti metabolične
zahteve rokometne igre. Pri tem so se osredotočali predvsem na meritve frekvence srčnega
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utripa in pa na vsebnost laktata v krvi pri igralcih med rokometnimi tekmami. Kljub mnogim
omejitvam, ki so bile predvsem metodološke narave so raziskovalci opravili v zadnjih letih na
tem področju velik napredek. Tako je izmeril Póvoas (2009) v svoji študiji izvedeni na
igralcih vrhunskih portugalskih moštev povprečno vrednost vsebnosti laktata v krvi 4.2 ± 2
(razpon 1.6–8.6) mmol.l-1 v prvem polčasu in 3.1 ± 1.8 (razpon 1.3–8.4) mmol.l-1 v drugem
polčasu. Drugi raziskovalci so se osredotočali predvsem na meritve vsebnosti laktata v krvi ob
koncu polčasa in ob koncu tekme. Tako je bila pri danskih vrhunskih igralcih izmerjena ob
koncu tekme vrednost 4.8 ± 1.9 mmol.l-1 (Michalsik idr., 2014b), pri mladih tunizijskih
igralcih pa 8.3 ± 0.9 mmol.l-1 (Chelly idr., 2011). V mnogih raziskavah so se avtorji
osredotočali na merjenje frekvence srčnega utripa med tekmo in skušali na podlagi teh
podatkov sklepati na metabolične procese v rokometašev organizmu. Tako je bilo na osnovi
razmerja med frekvenco srca in sprejemom kisika (FS/VO2) ugotovljen povprečen sprejem
kisika pri igralcih med tekmo v vrednosti 70.9 ± 6% (Michalsik idr., 2014b), 71 ± 6% (Srhoj
idr., 2002) in 74 ± 10% (Póvoas, 2009) maksimalnega sprejema kisika (VO2max). Z
neposredna analizo frekvence srca so Póvoas idr. (2011) ugotovili, da so igralci med tekmo
dosegali povprečne vrednosti 82 ± 9.3 % maksimalne frekvence srca (FSmax). V še novejši
raziskavi je Kruger s sodelavci (2013) analiziral FS pri igralcih med tekmo glede na igralna
mesta. Ugotovitve kažejo značilne razlike med igralci, ki igrajo na različnih igralnih mestih –
krila (85.2 ± 5.8 %) in zunanji igralci (86.4 ± 1.8 %) so v primerjavi s pivoti (83.4 ± 1.0 %)
dosegali višje vrednosti FSmax.
Igre na zmanjšanem prostoru in z manjšim številom igralcev
Igre na zmanjšanem proostoru in z manjšim številom igralcev so v zadnjem obdobju v
številnih športnih igrah postale zelo pomembne. Uporabljajo se lahko tako v smislu uvajanja
začetnikov v športne igre (otrokom se igra približa glede na njihove razvojne značilnosti) kot
tudi v smislu razvoja različnih sposobnosti in znanj pri odraslih igralcih. Še posebej velik
razvoj so tovrstne igre dosegle v nogometu in ragbiju, pa tudi v košarki, odbojki in kriketu.
Mnogi raziskovalci so v preteklosti ugotavljali pozitivne učinke prilagoditve igre v smislu
zmanjšanja prostora igranja in števila igralcev ter tudi prilagoditve nekaterih drugih pravil kot
so čas trajanja igre, odmor med posameznimi igrami, cilj zadevanja, itd. (Platt idr., 2001;
Tessitore idr., 2006; Jones in Drust, 2007; Rampinini idr.; Hill-Haas idr. 2011; Gabbet idr.,
2012; Gabbet idr., 2012a; Casamichana idr., 2014; Clemente idr., 2014; Halouani et al., 2014;
Harrison et al., 2014; Hoffman idr., 2014; Campos-Vazquez et al., 2014; Johnston et al.,
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2014; Köklü et al., 2015; Sampson idr.., 2015). Podoben proces lahko zasledimo tudi v
rokometu. Čeprav z nekaj zamude glede na nogomet se je razvoj prirejenih iger, ki so
ohranjale osnovne značilnosti rokometa zelo razširil. Hkrati pa so ta razvoj spremljale številne
raziskave, ki so skušale ovrednotiti pomen njihov pomen iz različnih vidikov. Pri tem je
potrebno posebej izpostaviti raziskavi v kateri so Buccheit idr. (2009 in 2009a) na osnovi
dobljenih rezultatov potrdili tezo, da je možno z prirejenimi igrami dosegati podobne učinke
na fiziološkem nivoju kot z generičnim intervalnim treningom. Ob tem pa trening s pomočjo
prirejenih iger vsebuje specifiko vsebine rokometa saj pomaga igralcem tudi pri
izpopolnjevanju tehničnih in taktičnih znanj. To avtorji izpostavljajo kot veliko prednost. Do
podobnih rezultatov so prišli tudi Clemente in Rocha (2014) ter Moss in Twist (2015).
Navedena dejstva so bila razlog, da smo se odločili za raziskavo o vplivu različnih velikosti
igrišča in števila igralcev v prirejenih igrah na spremembe v obremenitvi in naporu
rokometašev med igro. S tako dobljenimi rezultati smo želeli omogočiti trenerjem v praksi
bolj natančen uvid v možnosti ciljne manipulacije z določenimi parametri pri igranju
prirejenih igre.
9.2 CILJI IN HIPOTEZE
Namen raziskave je bil ugotoviti vpliv treh različnih dimenzij igrišča na razlike, ki nastanejo
v nekaterih pokazateljih napora in obremenitve igralcev rokometa kadar igrajo tekme s
prirejenimi pravili na manjšem prostoru v razmerju igralcev 3 proti 3 in 4 proti 4 z vratarjem.
Oblikovali smo štiri osnovne cilje:
1. Ugotoviti ali obstajajo statistično značilne razlike v obsegu in intenzivnosti cikličnih gibanj
igralcev na tekmah s prirejenimi pravili na manjšem prostoru različnih dimenzij v razmerju
igralcev 3 proti 3 in 4 proti 4 z vratarjem.
2. Ugotoviti ali obstajajo statistično značilne razlike v relativni frekvenci srca med tekmami s
prirejenimi pravili na manjšem prostoru različnih dimenzij v razmerju igralcev 3 proti 3 in 4
proti 4 z vratarjem.
3. Ugotoviti ali obstajajo statistično značilne razlike v obsegu in intenzivnosti cikličnih gibanj
igralcev na tekmah s številom igralcev 3 proti 3 glede na tekme odigrane z razmerjem igralcev
4 proti 4 na igriščih različnih dimenzij.
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4. Ugotoviti ali obstajajo statistično značilne razlike v relativni frekvenci srca med tekmami s
številom igralcev 3 proti 3 glede na tekme odigrane z razmerjem igralcev 4 proti 4 na igriščih
različnih dimenzij.
V skladu s Cilji raziskave smo postavili 12 ničelnih hipotez.
9.3 METODE DELA
Preizkušanci
Vzorec merjencev je sestavljalo osem moških amaterskih rokometašev (28 ± 3 leta, razpon
24–33 let) članov kluba Lazio Pallamano, ki je v času trajanja eksperimenta igral v italijanski
ligi A1 (2.liga). Med meritvami so morali biti igralci popolnoma zdravi in nepoškodovani. Vsi
so bili pred začetkom meritev seznanjeni z eksperimentalnim postopkom. Vsak igralec je
moral podpisati pisno izjavo, da je seznanjen z zahtevami in cilji eksperimentalnega postopka,
z morebitnimi tveganji in s prostovoljnim sodelovanjem pri nalogi.
Spremenljivke
V vzorec spremenljivk smo zajeli spremenljivke s področja obremenitev igralca med tekmo
(obseg in intenzivnost cikličnih gibanj, frekvenca pojavljanja acikličnih aktivnosti oz.
tehnično-taktičnih elementov) kot tudi nekatere spremenljivke, ki opisujejo fiziološke
odgovore organizma na obremenitev med igro (absolutne in relativne vrednosti frekvence
srca, subjektivna ocena napora).
Ciklična gibanja igralcev med tekmo so bila beležena kot obseg in intenzivnost vseh
pretečenih in/ali prehojenih razdalij na celotni tekmi. Intenzivnost cikličnih gibanj pa je bila
razdeljena na štiri hitrostne razrede: 1HR – opravljene razdalje v hitrosti do 1,4 m/s; 2HR -
opravljene razdalje v hitrosti od 1,4 do 3,4 m/s; 3HR - opravljene razdalje v hitrosti od 3,4 do
5,2 m/s; 4HR - opravljene razdalje v hitrosti nad 5,2 m/s (Bon, 2001; Pori idr., 2005). Izbrane
aciklične aktivnosti so bile naslednje: streli proti vratom z različnih igralnih mest in
položajev, zaleti proti vratom, podaje, skoki, zaustavljanje in izrivanje nasprotnika in
spremembe smeri gibanja.
Izmed fizioloških spremenljivk so bile v vzorec zajete naslednje spremenljivke: vrednosti FS
v mirovanju, najvišja dosežena vrednost FS v terenskem testu »30-15 IFT« (Buccheit, 2005),
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absolutne vrednosti FS med tekmami, relativne vrednosti FS med tekmo pod 50 % največjega
napora, relativne vrednosti FS med tekmo med 50 in 70 % največjega napora, relativne
vrednosti FS med tekmo med 70 in 90 % največjega napora in relativne vrednosti FS med
tekmo nad 90 % največjega napora. Te spremenljivke so bile izračunane na podlagi formule
po Karvonenu (Duarte idr., 2010).
Za ocenjevanje subjektivno doživetega napora igralcev med tekmami smo uporabili Borgovo
skalo CR10 (Borg, 1998), kjer so bile ocene v razponu od «sploh nič« do »zelo, zelo dosti«.
Potek in organizacija meritev
V raziskavi so bile analizirane igre v naslednjih eksperimentalnih pogojih:
- igra 3 proti 3 na igrišču dimenzij 24mx12m (cca. 30m2 na igralca);
- igra 3 proti 3 na igrišču dimenzij 30mx15m (cca. 57m2 na igralca);
- igra 3 proti 3 na igrišču dimenzij 32mx16m (cca. 67m2 na igralca);
- igra 4 proti 4 na igrišču dimenzij 24mx12m (cca. 22m2 na igralca);
- igra 4 proti 4 na igrišču dimenzij 30mx15m (cca. 42m2 na igralca);
- igra 4 proti 4 na igrišču dimenzij 32mx16m (cca. 50m2 na igralca).
Tekme so bile odigrane s consko obrambo s prirejenimi pravili glede začetnega meta in
disciplinskih kazni. Sodniki so bili uradni sodniki Italijanske rokometne zveze. Posamezna
igra je v eni enoti trajala 8 minut in se je tokom eksperimetalnega obdobja ponovila dvakrat.
Tekme so bile odigrane enkrat tedensko ob torkih, en teden igra 3 proti 3 in naslednji 4 proti
4. Tako je bilo skupaj odigrano 12 tekem, celoteno eksperimentalno obdobje pa je trajalo 4
mesece. V to obdobje sta vključeni tudi dve enoti meritev različnih uporabljenih testov.
Pred vsako eksperimentalno enoto oz. tekmo so si merjenci nadeli posebno oblačilo, ki je
omogočalo nošenje GPS naprave in oddajnika za merjenje FS (SPI pro elite 15hz, GPSports).
S pomočjo te naprave so se beležili premiki igralcev v xy ravnini. Pred začetkom igranja so
merjenci opravili standardizirano ogrevanje v trajanju 20 minut. Takoj po koncu vsake igre so
morali igralci merilcu povedati osebno oceno napora glede na Borgovo skalo. Tekme so bile
posnete tudi s posebno kamero, ki je kasneje omogočala ugotavljanje frekvence pojavljanja
acikličnih aktivnosti.
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Metode obdelave podatkov
Za nadaljnjo statistično analizo smo uporabili statitični programski paket SPSS – 17.0
(Chicago, U.S.A.). Najprej smo za vse uporabljene spremenljivke izračunali osnovno opisno
statistiko in normalnost porazdelitve podatkov s pomočjo testa Kolmogorov-Smirnov.
Statistično značilne razlike so bile sprejete ob petodstotni napaki alfa. Za določitev razlik med
opravljenimi cikličnimi aktivnostmi ter med vrednostmi FS v določenem območju igrami v
razmerju igralcev 3 proti 3 in 4 proti 4 je bila uporabljena multivariantna analiza variance
(MANOVA) za ponovljene meritve. Za določitev posameznih razlik pa je bil uporabljen
Fisherjev post-hoc test z Bonfferonijevo korekcijo.
9.4 REZULTATI
Rezultati so prikazani v treh deli. Najpej je analizirana igra 3 proti 3 glede tekme odigrane na
igriščih vseh treh dimenzij. V drugem delu na enak način predstavljamo rezultate dobljene na
tekmah z razmerjem igralcev 4 proti 4. Na koncu pa je opravljena še primerjava med tekmami
v obeh eksperimentalnih pogojih glede na število igralcev – torej tekme 3 proti 3 v primerjavi
s tekmami 4 proti 4.
Analiza obremenitve in napora na tekmah z razmerjem igralcev 3 proti 3
Skupna razdalja, ki so jo igralci med tekmo prehodili in pretekli se je povečala z naraščanjem
dimenzij igrišča.
Tabela 1
Razlike v celotni opravljeni razdalji na vseh treh dimenzijah igrišča pri igri 3 proti 3
Igrišče Celotna razdalja (m)
24×12m 885.2±66.7
30×15m 980.0±73.5*
32×16m 1095.0±113.0*#
* - značilna razlika v primerjavi z igriščem 24x12m (p<0.05; velik ES).
# - značilna razlika v primerjavi z igriščem 30x15m (p<0.05; velik ES).
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Pri analizi skupno opravljene razdalje smo na tekmah 3 proti 3 ugotovili značilne razlike med
vsemi tremi igrišči (p<0.05; velik ES).
Tabela 2
Razlike v razdalijah opravljenih v štirih hitrostnih območjih na vseh treh dimenzijah igrišča
pri igri 3 proti 3
Igrišče 1HR (m) 2HR (m) 3HR (m) 4HR (m)
24×12m 267.0±25.0 526.7±30.8 85.2±46.1 0.4±1.0
30×15m 219.9±22.7* 633.9±65.0* 155.5±71.0* 6.2±11.1
32×16m 230.0±30.5 669.8±80.4* 205.8±77.5* 27.9±35.9
Legenda: 1HR – hitrost 0-1,4 m/s; 2HR – hitrost 1,4-3,4 m/s; 3HR – hitrost 3,4-5,2 m/s; 4HR
- hitrost >5,2 m/s
* - značilna razlika v primerjavi z igriščem 24x12m (p<0.05; srednji ES).
Pri analizi opravljenih razdalij v štirih hitrostnih območjih na tekmah z razmerjem igralcev 3
proti 3 smo ugotovili, da so igralci na igrišču dimenzij 30×15m v primerjavi z igriščem
24×12m opravili manjšo razdaljo v prvem hitrostnem območju in večjo razdaljo v drugem in
tretjem hitrostnih območju (p<0,05; srednji ES). Značilne razlike so bile pri igri 3 proti 3
ugotovljene tudi pri primerjavi igre na igriščih dimenzij 24×12m glede na igrišče 32×16m:
igralci so opravili večjo razdaljo na igrišču 32×16m v drugem in tretjem hitrostnem območju
(p<0.05; srednji ES).
Table 3
Razlike v frekvenci pojavljanja acikličnih aktivnosti pri igri 3 proti 3 na vseh treh dimenzijah
igrišča
Igrišče Akcije Streli Podaje ZNRT Zaleti Skoki SSG
24×12m 34±1 58±5 71±6 15±3 8±2 11±2 7±3
30×15m 29±1 49±3 65±6 4±1 6±1 8±2 6±3
32×16m 28±2 48±4 72±4 6±1 3±1 8±3 4±2
Legenda: ZNRT - zaustavljanje napadalcev z rokami in telesom; SSG - Spremembe smeri
gibanja
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Na osnovi dobljenih podatkov ni bilo možno potrditi statistično značilnega vpliva različnih
dimenzij igrišča na frekvenco pojavljanja acikličnih aktivnosti pri igri v razmerju igralcev 3
proti 3 (Tabela 3).
Tabela 4
Delež časa, ki so ga igralci med igro 3 proti 3 preživeli v različnih območjih napora
določenega z relativno frekvenco srca
Igrišče <50% FSrel
(% časa)
50%-70% FSrel
(% časa)
70%-90% FSrel
(% časa)
>90% FSrel
(% časa)
24×12m 0.6±0.9 5.0±4.4 40.8±27.4 53.7±31.6
30×15m 2.7±1.1 9.5±9.8 65.1±23.3 22.7±27.7
32×16m 0.6±1.1 3.4±1.6 47.1±37.8 48.9±39.3
Kot je razvidno iz Tabele 4 nismo mogli potrditi statistično značilnega vpliva različnih
dimenzij igrišča na frekvenco srca v različnih območjih napora pri igri 3 proti 3.
Tabela 5
Razlike v vrednostih ocen zaznanega napora (RPE) med igro 3 proti 3
Igrišče RPE vrednosti
24×12m 6.3±0.5
30×15m 7.7±0.8
32×16m 8.2±1.0*
* - značilna razlika v primerjavi z igriščem dimenzij 24x12m (p<0.05; velik ES)
Ocena stopnje zaznanega napora je bila na tekmah 3 proti 3 značilno višja na igrišču 32×16m
v primerjavi z igriščem 24×12m (p<0,05; veliki ES). Ostale razlike pa niso bile značilne
(Tabela 5).
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Analiza obremenitve in napora na tekmah z razmerjem igralcev 4 proti 4
Za razliko od igre v razmerju igralcev 3 proti 3 je prišlo v igri 4 proti 4 do zmanjšanja
prehojenih in pretečenih razdalij na igrišču dimenzij 32×16m v primerjavi z igriščem dimenzij
30×15m. Razlika pa je bila zelo majhna.
Tabela 6
Razlike v celotni opravljeni razdalji na vseh treh dimenzijah igrišča pri igri 4 proti 4
Igrišče Celotna razdalja (m)
24×12m 948.1±64.5
30×15m 1087.2±92.0*
32×16m 1079.8±90.6
* - značilna razlika v primerjavi z igriščem 24x12m (p<0.05; velik ES).
Pri analizi skupno opravljene razdalje smo na tekmah 4 proti 4 ugotovili značilne razlike med
igriščem dimenzij 24×12m v primerjavi z igriščem 30×15m (p<0.05; velik ES) (Tabela 6).
Tabela 7
Razlike v razdalijah opravljenih v štirih hitrostnih območjih na vseh treh dimenzijah igrišča
pri igri 4 proti 4
Igrišče 1HR (m) 2HR (m) 3HR (m) 4HR (m)
24×12m 227.3±20.1 613.4±66.6 114.1±52.3 3.9±5.9
30×15m 212.0±27.7* 618.6±40.3 242.9±75.0* 19.6±25.4
32×16m 176.3±42.9* 635.1±98.0 289.5±75.2* 13.9±11.1
Legenda: 1HR – hitrost 0-1,4 m/s; 2HR – hitrost 1,4-3,4 m/s; 3HR – hitrost 3,4-5,2 m/s; 4HR
- hitrost >5,2 m/s, * - značilna razlika v primerjavi z igriščem 24x12m (p<0.05; srednji ES).
Pri analizi opravljenih razdalij v štirih hitrostnih območjih na tekmah z razmerjem igralcev 4
proti 4 smo ugotovili, da so igralci na igrišču dimenzij 24×12m dosegli značilno višje
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vrednosti opravljenih razdalij v prvem hitrostnem razredu in značilno nižje vrednosti v tretjem
hitrostnem razredu v primerjavi s tekmami odigranimi na igriščih drugih dveh dimenzij
(p<0.05; srednji ES) (Tabela 7).
Tabela 8
Razlike v frekvenci pojavljanja acikličnih aktivnosti pri igri 4 proti 4 na vseh treh dimenzijah
igrišča
Igrišče Akcije Streli Podaje ZNRT Zaleti Skoki SSG
24×12m 32±2 46±2 78±8 5±1 4±2 6±2 3±2
30×15m 27±1 41±4 75±10 5±1 3±1 6±2 2±2
32×16m 26±2 41±5 74±13 3±2 2±1 5±2 2±1
Legenda: ZNRT - zaustavljanje napadalcev z rokami in telesom; SSG - Spremembe smeri
gibanja.
Na osnovi dobljenih podatkov ni bilo možno potrditi statistično značilnega vpliva različnih
dimenzij igrišča na frekvenco pojavljanja acikličnih aktivnosti pri igri v razmerju igralcev 4
proti 4 (Tabela 8).
Tabela 9
Delež časa, ki so ga igralci med igro 4 proti 4 preživeli v različnih območjih napora
določenega z relativno frekvenco srca
Igrišče <50% FSrel
(% časa)
50%-70% FSrel
(% časa)
70%-90% FSrel
(% časa)
>90% FSrel
(% časa)
24×12m 0.9±0.7 3.0±1.0 40.0±26.4 56.1±27.7
30×15m 4.2±3.3 3.9±1.8 47.7±32.8 44.1±33.6
32×16m 3.3±1.9 4.7±3.5 59.1±35.3 32.9±38.7
Kot je razvidno iz Tabele 9 nismo mogli potrditi statistično značilnega vpliva različnih
dimenzij igrišča na frekvenco srca v različnih območjih napora pri igri 4 proti 4.
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Tabela 10
Razlike v vrednostih ocen zaznanega napora (RPE) med igro 4 proti 4
Igrišče RPE vrednosti
24×12m 7.7±1.0
30×15m 8.2±1.2
32×16m 7.3±1.2
Kot je razvidno iz Tabele 10 se tudi ocena stopnje zaznanega napora na tekmah 3 proti 3 ni
značilno razlikovala glede na igro na igriščih različnih dimenzijje (Tabela 10).
Analiza obremenitve in napora na tekmah z razmerjem igralcev 3 proti 3 v primerjavi z
tekmami odigranimi v razmerju igralcev 4 proti 4
Skupna razdalja, ki so jo igralci med tekmo prehodili in pretekli se je povečala z naraščanjem
dimenzij igrišča v obeh eksperimentalnih pogojih – tako pri igranju 3 proti 3 kot pri igri 4
proti 4. Edina izjema je bila zabeležena pri igri 4 proti 4 kjer je prišlo do majhnega
zmanjšanja povprečno opravljenih razdalij med igriščem 30×15m v primerjavi z igriščem
32×16m (Tabela 11).
Tabela 11
Razlike v celotni opravljeni razdalji na vseh treh dimenzijah igrišča pri igri 3 proti 3 v
primerjavi z igro 4 proti 4
Igrišče 3 proti 3 celotna razdalja (m) 4 proti 4 celotna razdalja (m)
24×12m 885.2±66.7 948.1±64.5
30×15m 980.0±73.5
1087.2±92.0
32×16m 1095.0±113.0
1079.8±90.6
Primerjava vseh prehojenih in pretečenih razdalij pri igri 3 proti 3 in igri 4 proti 4 ni pokazala
statistično značilnih razlik na nobenem izmed igrišč (Tabela 11).
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Tabela 12
Obseg razdalij prehojenih in pretečenih v štirih hitrostnih območjih pri igri 3 proti 3 v
primerjavi z igro 4 proti 4
1HR (m) 2HR (m) 3HR (m) 4HR (m)
3vs3 4vs4 3vs3 4vs4 3vs3 4vs4 3vs3 4vs4
24×12 267.0±25.0 227.3±20.1 526.7±30.8 613.4±66.6 85.2±46.1 114.1±52.3* 0.4±1.0 3.9±5.9
30×15 219.9±22.7 212.0±27.7 633.9±65.0 618.6±40.3 155.5±71.0 242.9±75.0* 6.2±11.1 19.6±25.4
32×16 230.0±30.5 176.3±42.9 669.8±80.4 635.1±98.0 205.8±77.5 289.5±75.2* 27.9±35.9 13.9±11.1
Legenda: HR – hitrostni razred.
* - Značilna razlika med igro 4 proti 4 v primerjavi z igro 3 proti 3 (p<0.05; srednji ES).
Tabela 13
Razlike v frekvenci pojavljanja acikličnih aktivnosti pri igri 3 proti 3 v primerjavi z igro 4
proti 4
24x12m 30x15m 32x16m
3vs3 4vs4 3vs3 4vs4 3vs3 4vs4
Akcije 34±1 36±1 30±1 26±0 30±1 28±1
Podaje 72±9 69±5 67±9 79±16 72±4 9±4
ZNRT 16±1 6±0 4±1 6±1 5±1 2±1
PM 10±3 3±1 7±1 4±2 3±1 2±1
Skoki 12±2 6±2 8±3 7±4 8±3 7±2
SSG 8±3 3±2 5±3 3±2 4±2 2±1
Legenda: ZNRT - zaustavljanje napadalcev z rokami in telesom; SSG - Spremembe smeri
gibanja
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9.5 RAZPRAVA
Rezultati raziskave kažejo, da imata različno število igralcev v posamezni ekipi in različne
dimenzije igrišča učinek na obremenitev in napor rokometašev pri igranju iger s prirejenimi
pravili. Pri igri 3 proti 3 je bilo zabeleženo naraščanje obsega cikličnih aktivnosti hkrati z
naraščanjem dimenzij igrišča. Pri igri 4 proti 4 pa sta rezultata dosežena pri igri na igrišču
30x15 in 32x16 zelo podobna (nekoliko višja je celo vrednost na manjšem igrišču). Kljub
temu lahko načeloma zaključimo, da se velikost igrišča odraža tudi na obsegu opravljenih
cikličnih aktivnosti. Za lažjo primerjavo smo uporabili tudi parameter “obseg cikličnih
aktivnosti na minuto”. Pri igri 3 proti 3 je bila na igrišču dimenzij 24×12m dosežena vrednost
110.7 m.min-1, na igrišču dimenzij 30×15m 122.5 m.min-1 in na največjem igrišču 136.9
m.min-1. Pri igri 4 proti 4 je vrednost na najmanjšem igrišču dimenzij 24×12m še nekoliko
višja in znaša 118.5 m.min-1. Vrednosti na drugih dveh igriščih pa sta skoraj identični - 135.9
m.min-1 in 135.0 m.min-1. Ti dve vrednosti sta zelo podobni vrednosti doseženi na največjem
igrišču pri igri 3 proti 3. Iz vidika uporabnosti analiziranih iger pa je zanimivo, da so vse
omenjene vrednosti višje kot tiste, ki so jih zabeležili raziskovalci na tekmah na normalnem
rokometnem igrišču in so varirale od 79.8m.min-1 (Bon, 2001) do 87.5m.min-1 (Pori idr.,
2009). So pa naši podatki primerljivi s tistimi, ki so jih pri nogometni igri na zmanjšanem
prostoru dobili Barbero-Alvarez idr. (2007) in Pereira idr. (2007). Po drugi strani pa so nižji
kot rezultati dobljeni v podobni raziskavi na rokometaših, kjer so igralci v povprečju prehodili
in pretekli 154m/min (Buchheit idr., 2009a). Iz te raiskave je tudi razvidno, da nekoliko krajše
trajanje igre z vmesnim odmorom (2×225sek.) in velika igralna površina (celotno rokometno
igrišče ob razmerju igralcev 4 proti 4) dovoljuje igralcem, da opravijo relativno velik obseg
cikličnih dejavnosti.
Ob analizi intenzivnosti cikličnih aktivnosti razdeljenih v štiri hitrostne razrede smo prišli do
ugotovitve, da igralci pri igrah na manjšem prostoru opravijo najmanjši obseg aktivnosti v
tretjem in četrtem HR (hiter tek in sprint). Se je pa delež teh dveh razredov povečeval hkrati s
povečevanjem velikosti igrišča tako pri igri 3 proti 3 kot pri igri 4 proti 4. Verjetno majhen
igralni prostor ne dovoljuje igralcem, da bi razvili dovolj veliko hitrost teka ker so razdalje
teka kratke. Do podobnih rezultatov so prišli tudi pri analizi malih iger pri nogometu
(Castellano in Casamichana, 2010).
Pri zabeleženi frekvenci acikličnih aktivnosti ni prišlo do značilnih razlik med tekmami
odigranimi na različno velikih igriščih tako v razmerju igralcev 3 proti 3 kot v razmerju
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igralcev 4 proti 4. Tudi pri proučevanju prirejenih nogometnih iger so raziskovalci prišli do
podobnih podatkov (Tessitore idr., 2006; Kelly in Drust, 2009).
V naši raziskavi pa nismo mogli potrditi statistično značilnega vpliva različnih dimenzij
igrišča na frekvenco srca v različnih območjih napora tako pri pri igri 3 proti 3 kot pri igri 4
proti 4. Če pa primerjamo naše podatke s podatki raziskave, ki jo je opravil Kruger idr. (2013)
na igralcih, ki so igrali normalne rokometne tekme (krila - 85.2 ± 5.8 % FSmax; zunanji igralci
- 86.4 ± 1.8 % FSmax; pivoti 83.4 ± 1.0 % FSmax) lahko ugotovimo, da so naši merjenci
dosegali zelo visoke vrednosti. Gotovo so visoke vrednosti FS zabeležene med tekmami
posledica velike količine opravljenih cikličnih aktivnosti na minuto, velike količine skokov,
sprememb smeri gibanja in specifičnih rokometnih akcij.
9.6 ZAKLJUČEK
Glede na dobljene podatke in opravljene primerjave ter razpravo lahko zaključimo, da so
prirejene igre glede prostora in števila igralcev uporabne kot trenažno sredstvo pri rokometu.
Tako parametri obremenitve in kot napora med posameznimi tekmami kažejo določene
razlike do katerih prihaja na podlagi različnega števila igralcev in velikosti igrišča. Visoko
razmerje cikličnih aktivnosti na minuto in izmerjene visoke vrednosti frekvence srca kažejo
na veliko vrednost analiziranih iger pri razvoju aerobne moči rokometašev. Prisotnost
velikega števila skokov še posebej v igri na igrišču dimenzij 24×12m omogoča tudi ugodne
učinke na razvoj specifične odrivne moči. Je pa majhno igrišče lahko problematično iz vidika
razvoja višjih hitrosti teka (sprinta) tako da igralci ne morejo razviti svojih najvišjih hitrosti
teka. Je pa tovrstna igra izredno koristna tudi zaradi prisotnosti velikega števila acikličnih
aktivnosti. Predvsem veliko število obrambnih aktivnosti (zaustavljanje nasprotnika z rokami
in telesom) kaže na možnost razvoja tehničnih in taktičnih znanj igralcev v igri 1 proti 1, ki je
pri rokometu zelo pomembna. Tudi veliko število strelov daje tem igram veliko vrednost, saj
je ob običajnem igranju rokometa število strelov na časovno enoto bistveno nižje. Rezultati
raziskave kažejo, da je večina značilnih razlik nastala med najmanjšim igriščem in ostalima
dvema igriščema. Medtem, kjer je bila razlika glede prostora na igralca najmanj 20m2
in več.
Podatki o obremenitvi in naporu igralcev na srednjem in največjem igrišču, ki se glede
prostora namenjenega posameznemu igralcu nista razlikovala več kot 10m2, so bili zelo
podobni in se niso značilno razlikovali. Iz tega izhaja eden izmed pomembnejših zaključkov
naše raziskave, ki je namenjen predvsem športni praksi. Če namreč trenerji želijo manipulirati
z malimi igrami z namenom, da bi dosegli različne cilje, morajo spreminjati razliko v prostoru
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na posameznega igralca najmanj za 20m2. Ta zaključek pa je pomemben tudi za raziskovalno
dejavnost na tem področju. Pri igriščih, ki se glede na relativno kvadraturo na posameznega
igralca ne razlikujejo dovolj, načeloma raziskovalci ne morejo pričakovati značilnih razlik v
parametrih obremenitve in napora.