Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
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)
2
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)
3
Pmax
The maximal power that can be generated for a
very short period of time. Units are W or W/kg.
4
Pmax
5
Pmax
6
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.
7
FRC
8
FRC
9
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.
10
mFTP
11
mFTP
12
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
13
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.
14
15
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.
16
Phenotypes
17
Phenotype “map”
18
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)
19
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)
20
Mean maximal power as % of FTP
21
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
22
iLevels based on P-D curve
23
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)
24
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.
25
26
Coggan’s “Zorro” chart