Karsten, B., Jobson, S. A., 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 (Print), 1439-3964 (Online) (doi:https://doi.org/10.1055/s-0033-1349844)

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Abstract

The purpose of this study was to investigate the level of agreement between laboratory-based estimates of critical power (CP) and results taken from a novel field test. Subjects were fourteen trained cyclists (age 40±7 yrs; body mass 70.2±6.5 kg; V̇O2max 3.8±0.5 L • min−1). Laboratory-based CP was estimated from 3 constant work-rate tests at 80%, 100% and 105% of maximal aerobic power (MAP). Field-based CP was estimated from 3 all-out tests performed on an outdoor velodrome over fixed durations of 3, 7 and 12 min. Using the linear work limit (Wlim) vs. time limit (Tlim) relation for the estimation of CP1 values and the inverse time (1/t) vs. power (P) models for the estimation of CP2 values, field-based CP1 and CP2 values did not significantly differ from laboratory-based values (234±24.4 W vs. 234±25.5 W (CP1); P<0.001; limits of agreement [LOA], −10.98–10.8 W and 236±29.1 W vs. 235±24.1 W (CP2); P<0.001; [LOA], −13.88–17.3 W. Mean prediction errors for laboratory and field estimates were 2.2% (CP) and 27% (W′). Data suggest that employing all-out field tests lasting 3, 7 and 12 min has potential utility in the estimation of CP.

Item Type:	Article
Uncontrolled Keywords:	critical intensity, exercise testing, power-duration relationship
Subjects:	Q Science > QP Physiology
Faculty / School / Research Centre / Research Group:	Faculty of Education, Health & Human Sciences > School of Human Sciences (HUM)
Related URLs:	Publisher Organisation
Last Modified:	09 Oct 2021 04:46
URI:	http://gala.gre.ac.uk/id/eprint/11597

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