New metrics and iLevels in WKO4 - Amazon Web...
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New metrics and iLevels in WKO4 February 9, 2015 | Andrew R. Coggan, PhD
Transcript of New metrics and iLevels in WKO4 - Amazon Web...
New metrics and iLevels in WKO4February 9, 2015 | Andrew R. Coggan, PhD
Outline of webinar
1. New P-D model parameters (Pmax, FRC,
mFTP)
a. Definition
b. Application
2. iLevels
a. Rationale
b. Benefits
3. New pedaling metrics (GPR, GPA, KI, MEPF)
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Outline of webinar
1. New P-D model parameters (Pmax, FRC,
mFTP, stamina)
a. Definition
b. Application
2. iLevels
a. Rationale
b. Benefits
3. New pedaling metrics (GPR, GPA, KI, MEPF)
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Pmax
The maximal power that can be generated for a
very short period of time. Units are W or W/kg.
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Pmax
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Pmax
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Men Women
Range 758-1873 W 616-1180 W
Average 1251 W 833 W
SD 259 W 157 W
Low <992 W <676 W
Med 993-1509 W 677-989 W
High >1510 W >990 W
Pmax standards
Functional Reserve Capacity
Operationally: The total amount of work that
can be done during continuous exercise above
FTP before fatigue occurs. Units are kJ or J/kg.
Conceptually: A measure of resistance to
fatigue during high-intensity (i.e., supra-FTP),
non-sustainable exercise.
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FRC
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FRC
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Men Women
Range 8.2-35.1 kJ 6.8-24.2 kJ
Average 18.1 kJ 13.1 kJ
SD 4.7 kJ 0.4 kJ
Low <13.4 kJ <12.7 kJ
Med 13.5-22.7 kJ 12.8-13.4 kJ
High >22.8 >13.5 kJ
FRC standards
mFTP
mFTP is a model-derived estimate of FTP, i.e.,
the highest power a rider can maintain in a
quasi-steady-state without fatiguing.
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mFTP
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mFTP
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Men Women
Range 191-440 W 173-316 W
Average 319 W 247 W
SD 54 W 32 W
Low <265 W <215 W
Med 266-372 W 216-279 W
High >373 W >280 W
mFTP standards
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Use of Pmax, FRC, and mFTP
Stamina
A measure of resistance to fatigue during
prolonged duration, moderate intensity (i.e.,
sub-FTP) exercise. Units are percent of
maximum, i.e., 0-100%, although most
individuals will fall in the 75-95% range.
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Stamina in a report
Auto-phenotyping
The objective (i.e., statistically-based)
classification of an athlete into one of four (for
now) phenotypes (e.g., “sprinter”), based on the
overall shape of their power-duration
relationship.
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Phenotypes
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Phenotype “map”
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Outline of webinar
1. New P-D model parameters (Pmax, FRC,
mFTP)
a. Definition
b. Application
2. iLevels
a. Rationale
b. Benefits
3. New pedaling metrics (GPR, GPA, KI, MEPF)
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FTP-based power training levels
Level Name/purpose% of threshold
power% of threshold HR RPE
1 Active recovery <55% <68% <2
2 Endurance 56-75% 69-83% 2-3
3 Tempo 76-90% 84-94% 3-4
4 Lactate threshold 91-105% 95-105% 4-5
5 VO2max 106-120% >106% 6-7
6 Anaerobic capacity 121-150% N/a >7
7 Neuromuscular power N/a N/a (maximal)
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Mean maximal power as % of FTP
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0%
100%
200%
300%
400%
500%
600%
1 10 100 1000 10000 100000 1000000
Pow
er (
%)
of
FTP
Duration of effort (s)
iLevels based on P-D curve
Intensity
• Determined by key
features of P-D curve
Duration
• Maximal and minimal
durations effort can be
maintained
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iLevels based on P-D curve
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Outline of webinar
1. New P-D model parameters (Pmax, FRC,
mFTP)
a. Definition
b. Application
2. iLevels
a. Rationale
b. Benefits
3. New pedaling metrics (GPR, GPA, KI, MEPF)
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New pedaling metrics
1. Gross power released (GPR) – The gross (total) amount of power released to the pedal during a complete crank revolution.
2. Gross power absorbed (GPA) – The gross (total) amount of power absorbed from the pedal during a complete crank revolution.
3. Kurtotic index (KI) – A measure of the peakedness of power application during the GPR phase.
4. Maximum effective pedal force (MEPF) – The maximum effective (tangential) pedal force during the GPR phase.
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Coggan’s “Zorro” chart
