The 3-min Test Does not Provide a Valid Measure of Critical Power Using the SRM Isokinetic Mode

Abstract Recent datas suggest that the mean power over the final 30 s of a 3-min all-out test is equivalent to Critical Power (CP) using the linear ergometer mode. The purpose of the present study was to identify whether this is also true using an “isokinetic mode”. 13 cyclists performed: 1) a ramp...

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Bibliographic Details
Published in:International journal of sports medicine 2014-04, Vol.35 (4), p.304-309
Main Authors: Karsten, B., Jobson, S. A., Hopker, J., Passfield, L., Beedie, C.
Format: Article
Language:English
Subjects:
Adult
Bicycling - physiology
Biological and medical sciences
Exercise Test - methods
Female
Fundamental and applied biological sciences. Psychology
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Male
Medical sciences
Muscle Strength - physiology
Oxygen Consumption
Training & Testing
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary:Abstract Recent datas suggest that the mean power over the final 30 s of a 3-min all-out test is equivalent to Critical Power (CP) using the linear ergometer mode. The purpose of the present study was to identify whether this is also true using an “isokinetic mode”. 13 cyclists performed: 1) a ramp test; 2) three 3-min all-out trials to establish End Power (EP) and work done above EP (WEP); and 3) 3 constant work rate trials to determine CP and the work done above CP ( W ′) using the work-time (=CP1/ W ′1) and 1/time (=CP2/ W ′2) models. Coefficient of variation in EP was 4.45% between trials 1 and 2, and 4.29% between trials 2 and 3. Limits of Agreement for trials 1–2 and trials 2–3 were −2±38 W. Significant differences were observed between EP and CP1 (+37 W, P
ISSN:0172-4622
1439-3964
DOI:10.1055/s-0033-1349093