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Article

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

1
Department of Physical Education, Chinese Culture University, Taipei 11114, Taiwan
2
Department of Athletic Performance, National Taiwan Normal University, Taipei 11677, Taiwan
3
Sports Performance Lab., National Taiwan Normal University, Taipei 11677, Taiwan
4
Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editors: Diego Muñoz Marín, Jesús Siquier Coll and Ignacio Bartolomé Sánchez
Int. J. Environ. Res. Public Health 2021, 18(17), 9193; https://doi.org/10.3390/ijerph18179193
Received: 12 July 2021 / Revised: 27 August 2021 / Accepted: 27 August 2021 / Published: 31 August 2021
(This article belongs to the Special Issue Hyperthermia, Exercise and Health)
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 (VO2max), and first and second ventilatory thresholds (VT1 and VT2, respectively) against the power output (wVO2max, wVT1, and wVT2) were measured during IETs. EP was recorded during the 3MTs. A significant correlation was observed between wVT2 and EP under NT (r = 0.674, p < 0.05) and under HT (r = 0.672, p < 0.05). However, wVO2max, wVT1, wVT2, 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 wVT2 under HT conditions. View Full-Text
Keywords: critical threshold; exercise intensity; fitness test; heat critical threshold; exercise intensity; fitness test; heat
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MDPI and ACS Style

Kuo, Y.-H.; Cheng, C.-F.; Kuo, Y.-C. Determining Validity of Critical Power Estimated Using a Three-Minute All-Out Test in Hot Environments. Int. J. Environ. Res. Public Health 2021, 18, 9193. https://doi.org/10.3390/ijerph18179193

AMA Style

Kuo Y-H, Cheng C-F, Kuo Y-C. Determining Validity of Critical Power Estimated Using a Three-Minute All-Out Test in Hot Environments. International Journal of Environmental Research and Public Health. 2021; 18(17):9193. https://doi.org/10.3390/ijerph18179193

Chicago/Turabian Style

Kuo, Yu-Hsuan, Ching-Feng Cheng, and Yu-Chi Kuo. 2021. "Determining Validity of Critical Power Estimated Using a Three-Minute All-Out Test in Hot Environments" International Journal of Environmental Research and Public Health 18, no. 17: 9193. https://doi.org/10.3390/ijerph18179193

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