High agreement between laboratory and field estimates of critical power in cycling

Karsten, B, Jobson, S., Hopker, J., Jimenez, A. and Beedie, C. (2013) High agreement between laboratory and field estimates of critical power in cycling. International Journal of Sports Medicine, 35 (4). pp. 298-303. ISSN 0172-4622.

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Abstract

The purpose of this study was to investigate the level of agreement between field-based and laboratory-based estimates of critical power (CP) in cycling. Subjects were fourteen trained cyclists (age 40 ± 7 yrs; body mass 70.2 ± 6.5 kg; V& O2 max 3.8 ± 0.48 L·min-1). Laboratory-based CP was estimated from three constant work-rate tests performed on a cycle ergometer at 80%, 100% and 105% of maximal aerobic power (MAP). Field-based CP was estimated from three all-out tests performed on an outdoor velodrome over fixed durations of 3, 7 and 12 minutes. Using the linear work limit (W ) versus time limit (T ) relation and the inverse time (1/t) versus power (P) models, field-based CP1 and CP2 values did not significantly differ from laboratory-based values (234 ± 24.4W vs. 234 ± 25.5W (CP1); P < 0.001, r2 = 0.95; limits of agreement [LOA], −10.98 to 10.8 W and 236 ± 29.1W vs. 235 ± 24.1W (CP2); P < 0.001, r2 = 0.95 [LOA], -13.88 to 17.3 W. Data suggest that employing all-out field tests lasting 3, 7 and 12 minutes has potential utility in the estimation of CP.

Item Type: Article
Subjects: R Medicine > RC Internal medicine > RC1200 Sports medicine
Divisions: Faculty of Social and Applied Sciences > School of Human and Life Sciences
Depositing User: Chris Beedie
Date Deposited: 12 Oct 2016 11:22
Last Modified: 26 Oct 2016 08:28
URI: https://create.canterbury.ac.uk/id/eprint/14946

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Last edited: 29/06/2016 12:23:00