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Determining Validity of Critical Power Estimated Using a Three-Minute All-Out Test in Hot Environments

Author

Listed:
  • Yu-Hsuan Kuo

    (Department of Physical Education, Chinese Culture University, Taipei 11114, Taiwan)

  • Ching-Feng Cheng

    (Department of Athletic Performance, National Taiwan Normal University, Taipei 11677, Taiwan
    Sports Performance Lab., National Taiwan Normal University, Taipei 11677, Taiwan)

  • Yu-Chi Kuo

    (Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan)

Abstract

The aim of this study was to investigate the effects of heat on the validity of end-test power (EP) derived from a 3-min all-out test (3MT), which is considered as an alternative method for determining the conventional critical power. Twelve male cyclists were required to perform incremental exercise tests (IET) and 3MTs in both high temperature (HT; 35 °C) and thermoneutral temperature (NT; 22 °C) environments. Maximal oxygen uptake (VO 2max ), and first and second ventilatory thresholds (VT 1 and VT 2 , respectively) against the power output ( w VO 2max , w VT 1 , and w VT 2 ) were measured during IETs. EP was recorded during the 3MTs. A significant correlation was observed between w VT 2 and EP under NT ( r = 0.674, p < 0.05) and under HT ( r = 0.672, p < 0.05). However, w VO 2max , w VT 1 , w VT 2 , and EP were significantly higher in NT than in HT ( p < 0.05). In conclusion, although the physiological stress induced by HT might impair exercise performance, the EP derived from 3MT can validly estimate w VT 2 under HT conditions.

Suggested Citation

  • Yu-Hsuan Kuo & Ching-Feng Cheng & Yu-Chi Kuo, 2021. "Determining Validity of Critical Power Estimated Using a Three-Minute All-Out Test in Hot Environments," IJERPH, MDPI, vol. 18(17), pages 1-9, August.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:17:p:9193-:d:626384
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    Cited by:

    1. Javier Iglesias-Pino & Alba Herrero-Molleda & Jaime Fernández-Fernández & Juan García-López, 2022. "Interchangeability between the Data Obtained by Two Powermeters during Road Cycling Competitions: A Case Study," IJERPH, MDPI, vol. 19(24), pages 1-6, December.

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