Karsten, B., Jobson, S.A., Hopker, J., Stevens, L. and Beedie, C. (2014) Validity and reliability of critical power field testing. European Journal of Applied Physiology, 115 (1). pp. 197-204. ISSN 1439-6319 (Print), 1439-6327 (Online) (doi:https://doi.org/10.1007/s00421-014-3001-z)

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Abstract

Purpose: To test the validity and reliability of field critical power (CP).

Method: Laboratory CP tests comprised three exhaustive trials at intensities of 80, 100 and 105 % maximal aerobic power and CP results were compared with those determined from the field. Experiment 1: cyclists performed three CP field tests which comprised maximal efforts of 12, 7 and 3 min with a 30 min recovery between efforts. Experiment 2: cyclists performed 3 × 3, 3 × 7 and 3 × 12 min individual maximal efforts in a randomised order in the field. Experiment 3: the highest 3, 7 and 12 min power outputs were extracted from field training and racing data.

Results: Standard error of the estimate of CP was 4.5, 5.8 and 5.2 % for experiments 1–3, respectively. Limits of agreement for CP were −26 to 29, 26 to 53 and −34 to 44 W for experiments 1–3, respectively. Mean coefficient of variation in field CP was 2.4, 6.5 and 3.5 % for experiments 1–3, respectively. Intraclass correlation coefficients of the three repeated trials for CP were 0.99, 0.96 and 0.99 for experiments 1–3, respectively.

Conclusions: Results suggest field-testing using the different protocols from this research study, produce both valid and reliable CP values.

Item Type:	Article
Additional Information:	[1] Acknowlegements (funding): No funding was received for this work.
Uncontrolled Keywords:	critical power, critical velocity, field testing capacity, reliability, validity
Subjects:	Q Science > QP Physiology
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Education, Health & Human Sciences > School of Human Sciences (HUM) Faculty of Education, Health & Human Sciences > Institute for Lifecourse Development > Centre for Exercise Activity and Rehabilitation
Last Modified:	22 Nov 2021 11:49
URI:	http://gala.gre.ac.uk/id/eprint/12227

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