Department of Physical Education, Chinese Culture University, Taipei 11114, Taiwan.
Department of Athletic Performance, National Taiwan Normal University, Taipei 11677, Taiwan.
Int J Environ Res Public Health. 2021 Aug 31;18(17):9193. doi: 10.3390/ijerph18179193.
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), and first and second ventilatory thresholds (VT and VT, respectively) against the power output (VO, VT, and VT) were measured during IETs. EP was recorded during the 3MTs. A significant correlation was observed between VT and EP under NT ( = 0.674, < 0.05) and under HT ( = 0.672, < 0.05). However, VO, VT, VT, and EP were significantly higher in NT than in HT ( < 0.05). In conclusion, although the physiological stress induced by HT might impair exercise performance, the EP derived from 3MT can validly estimate VT under HT conditions.
本研究旨在探讨高温对 3 分钟全力测试（3MT）中末端测试功率（EP）有效性的影响，3MT 被认为是确定传统临界功率的替代方法。12 名男性自行车运动员分别在高温（35°C）和热中性温度（22°C）环境下进行递增运动测试（IET）和 3MT。在 IET 期间测量最大摄氧量（VO）以及与功率输出（VO、VT 和 VT）相对应的第一和第二通气阈值（VT 和 VT）。在 3MT 期间记录 EP。在 NT 下（ = 0.674， < 0.05）和 HT 下（ = 0.672， < 0.05），VT 和 EP 之间存在显著相关性。然而，在 NT 下，VO、VT、VT 和 EP 均显著高于 HT（ < 0.05）。总之，尽管 HT 引起的生理应激可能会损害运动表现，但 3MT 得出的 EP 可以有效地估计 HT 条件下的 VT。
