Sacra Men To Final Presentation on Caffeine2
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Transcript of Sacra Men To Final Presentation on Caffeine2
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Caffeine and SportsPerformance: Whats New?
Presented by:Jenalyn Eve L. Sacramento, RND
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Extra Energy
Accdng tolegend:Ethiopian
Shepherds
HISTORY OF CAFFEINE
Coffee use started a
searly as 9 th Century
In Ethiopia
Goats appear to danceTried eating the seeds
CoffeeBeans
Influenceof caffeine
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US National Coffee Drinking Trends 2011
55% to 90% of the U.S.
population is consuming coffeeevery day
In the United States,
More than 20% of men and 15% of women who exceededthe recommended maximum of CAF per day
These data exemplified the renowned acceptance of public on coffee.
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Product Serving Size(unless
otherwisestated)
Milligrams of
Caffeine(approxi
matevalues)
oz mlCoffee
Brewed 8 237(1cup)
135
Roastedandground,percolated
8 237 118
Roastedandground,filterdrip
8 237 179
Roastedandground,decaffeinated
8 237 3
Instant 8 237 76 - 106Instantdecaffeinated
8 237 5
Sources of Caffeine
135
3
100158 182
300 8
35.55
75.84
200
0
50
100
150
200
250
Caffeine (
Source: Nancy Clarks Sports Nutrition Guidebook, 4Edition, 2008 & Harlan, B.F.2000. Caffeine and Nutrition.
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Caffeine Metabolism
LipolysisUrine VolumeDilate Blood Vessels
Smooth Muscle
Relaxation
Caffeine common name for trimethylxanthine
Absorption Rate 15 to 45 minutes
Metabolism - Liver
Excretion Kidneys and Urinary Tract
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How does caffeine works?
Central Nervous System
Metabolic
Hormones
Muscular
Cardiovascular
Renal
Pulmonary
+/-
Source: Bulent Sormen et.al. Caffeine Use inSports: Considerations for the Athlete. Journal of Stren th and Conditionin Research 2008
CAFFEINE
SPORTSPERFORMANCE
CNS
METABOLIC
HORMONES
MUSCULAR CARDIOVASCULAR
RENAL
PULMONARY
VENTILATION
CAFFEINE
SPORTPERFORMANCE
SITE OF ACTION CAUSE EFFECT
CNS
Blocks adenosine receptors Speeds up activity of cells
Hormonal Catecholamine, cortisol,beta endorphins
Alert, ActiveDelays PainDelays Peripheral Fatigue
Metabolic Sympathetic response Stimulates lipolysis
Muscular Faciliates Ca lcium transport Stimulates neural activationof muscle contractionCardiovascular Production of epinephrine Vasodilation of blood vessels
Pulmonary Sympathetic response bronchodilation of alveoliRenal Sympathetic response Mild diuretic effects
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Lists caffeine as a
multiple purpose generally recognized assafe food substance
Confirmed that caffeine is indeedergogenic but is specific to condition of
athleteClassified caffeine as an ApprovedSupplement
List caffeine as prohibited drug s ince2004 . Thus, Caffeine is still in the watchlists.
Banned If the concentration in urineexceeds 15 micrograms/ml
STAND OF DIFFERENT SPORTS ORGANIZATIONS ON CAFFEINE
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Awareness and Use of Caffeineby Athletes
Source: Den Desbrow et.al. Awareness and Use of Caffeine by athletescompeting at the 2005 Ironman Triathlon World Championships. InternationalJournal of Sport Nutrition & Exercise Metabolism. Vol 16. Issue 5. October
Questionnaires 140 athletes
100 athletes (71%)correctly identified that caffeine use in
UNRESTRICTED
15 ATHLETES (11%)Is not planning to use caffeine before the race
20 umol/L or > 3 mg/kg BW
52 % did notknow the
optimal dose
The most common sources forinformation on caffeine
Self-Researched/Experimentation 44%
Fellow Athletes 42%
Magazines 38%
Journal Articles 33%
Most popular caffeinated choices
COLA 78%
Caffeinated gels 42%
Coffee (Pre-race) 37%
Energy Drinks 13%
No Doz Tablets 9%
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Does Drinking Red BullIncrease Manual Dexterity?
Published in Biomedicine International (2011) 2:2-4
Purpose: This study aims to evaluate the
effects of drinking one can of Red Bullenergy drink on manual dexterity using astandardized 9-hole peg test
Author: Isaiah Tubbs, R. Shane Tubbs
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23 Volunteers
Materials and Methods
18 Placebo 5 Control
9-hole peg test
250 ml Red Bull 250 ml WaterWaiting time:
30 minutes
Tool: Stopwatch
Statistical Analysis: Statistica Version 5.Turkeys post hoc test p
Characteristics of Subjects
Healthy Subjects (with written consent) Not a chronic consumer of caffeine
PRE-CONSUMPTION
POST-CONSUMPTION
PRE-CONSUMPTION
POST-CONSUMPTION
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Results:
The maximal times taken by control subjects to complete thetest were slightly greater than those of the experimental group
but the difference did not reach statistical significance
EXPERIMENTAL GROUP
w/ 80mg CAFFEINE
CONTROL GROUP
WATERPre-consumption (Right Hand)
15.92 s Pre-consumption (Right Hand)
16.9 s
Pre-consumption (Left Hand)16.6 Pre-consumption (Left Hand)18.8 sPost-consumption (Right Hand)
14.9 s Post-consumption (Right Hand)
17.8 s
Post-consumption (Left Hand)15.83
Post-consumption (Left Hand)17.3 s
14.9s 17.8s
15.83s 17.3s
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The Effect of Caffeine Ingestion on AnaerobicPerformance in Moderately Trained Adults
Author: Michael J. Duncan
Purpose: To examine the impact of caffeine
ingestion on anaerobic performance in agroup of moderately trained adults.
Published in Serbian Journal of Sports Sciences, 2009
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14 participants
Research Design: Within-Subjects, Repeated Measures Design
WINGATE ANAEROBIC TEST
CONTROLNo substancewas ingested
CAFFEINE5mg/kg CAFdiluted in 250mlartificiallysweetened drink
PLACEBO250 mlartificiallysweeteneddrink
CONSUMED 60 MINUTES BEFORE EACH EXERCISE TRIAL
MONARLKS ANAEROBIC TESTING SOFTWARE 1.0 Measured PPO and MPOPolar Electro Oy a heart rate telemetry that measured PHR
Borg 6-20 RPE Scale- measured RPELactate Pro, - measured BL
Stat. Analysis:
ANOVABonferroni
10 min warm up :Dynamic & staticstretches The exercise test is consisted of a 30 second Wingate
Anaerobic Test completed on a Monark Peak bike.
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Subject Characteristics: Free from any of musculoskeletal
pain and disorders Competed in team games ( rugby
union, football, basketball) >12 hours week programmed PA
Mean Age: 21.8 y/o
TO LIMIT INTERNAL VALIDITY THREATS: Refrain from vigorous exercise a day before Must not consume caffeine after 6:00pm
the night before testing Alll testing took place between 9:00am to
12:00 pm at the same time. Participants is asked to complete 24 hour
dietary and exercise recall before each trial Were provided a list of caffeine-containing
products so they could refrain from caffeineintake
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Results:Peak Bla, RPE and PHR across conditions
11.5 12.0* 11.8*18.5 18.0* 18.6178.8 180.6 180.5
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CAFFEINE
Mean Diff: 70.2 p = 0.003
PLACEBO
Mean Diff: 42.2p = 0.005
Peak power output across conditions
Peak power output is significantly greater in caffeine condition
Average Power is the average power over the 30 second test.
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Multiple Effects of Caffeine on SimulatedHigh-Intensity Team Sport Performance
Author: Gene R. Stuart
Published in Medicine & Science in Sports and Exercise, 2005
Purpose: To investigate effects of caffeine
in a performance test stimulating physicaland skill demands of a rugby union game .
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Research Design:Double-blind, randomized, crossover design
9 M rugby players
6mg /kg BM of CAF
taken 70 minutes prior test
RUGBY TEST It is consisted of 14 circuits w/c is divided in totwo 40 minute halves w/ a ten min half time restIn each half time, there is 7 circuits made up of 11 stations.
Ethically Approved by: AUT Ethics Committee
PLACEBO6mg/kgdextrose incapsuleform
Wash Outperiod: 1 week
Venue: Indoorsports stadiumTemp: 21-23 C
10 min warm up:JoggingStretchingSome touch rugby
Plasma Caffeine& Epinephrine
Statistical Tool:ProcMized in theStatistica
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Average performance values for the varioustasks obtained in all circuits
of the test in the placebo condition
Eff f C ff i d h R d i i
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Effect of Caffeine and the Reduction inFatigue with Caffeine (Relative to Placebo)
There were enhancements of mean performance for all measuresexcept Drive 2 power, 20-meter sprint and offensive sprints.
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PLACEBO
CAFFEINE
PLACEBO
CAFFEINE
This figure shows the performance in three of the tasks of the rugby testfollowing caffeine and placebo ingest ion.
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CAFFEINE
PLACEBO
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Summary New finding: There is a 10%
improvement in the ability to passballs accurately while pressured topass rapidly.
The only clear unfavorable effect withcaffeine in this present study was forDrive 2 , which showed increasedfatigue in the second half comparedwith the first half .
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1. Red Bull energy drink has no short-termeffects on manual dexterity
2. Caffeine lowers Rating of PerceivedExertion during high-intensity AnaerobicExercise
3. There is a 10% improvement in the
ability to pass balls in team sports underpressure.4. A potentially useful supplement for
games such as rugby, football, soccer,hockey, basketball, and tennis.
Evidenced-Based StudiesSummary:
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RECOMMENDATION Caffeine should be taken 1 hour prior
performance. If you are caffeine consumer, refrain
from eating caffeinated products 2 days
before the game. Recommended Type of Sport: Endurance
Activities that lasts 60 minutes or longer
Recommended Caffeine intake forathletes: (~3-6mg/kg ) (ISSN) Avoid taking too much caffeine prior the
game: 500mg of caffeine or >6mg/kg
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Take Home Message
Proper Diet and Proper Trainingare the best ways to prepare for agame thus, ergogenic aid like
caffeine could also help in a waybut you should not solely basedyour performance to an ergogenic
aid because these ergogenic aid isstill just a SUPPORT for yourathletic needs.
BE A RESPONSIBLEATHLETE.