混合方法预冷增强自动步行20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车20公里自行车
Julian Andro P Ramos1, Kagan J Ducker1, Hugh Riddell1
1Curtin School of Allied Health, Curtin University, Perth, Australia.
International journal of sports physiology and performance
|February 20, 2024
概括
混合方法预冷 (PreC) 在热湿条件下 (46°C AT) 显著提高了20公里的自行车性能. 在热干 (35°C AT) 或中度热湿 (40°C AT) 的环境中,预加热没有提高性能.
科学领域:
- 运动生理学 运动生理学
- 环境的极端情况
- 体育表现体育表现体育表现
背景情况:
- 预冷 (PreC) 策略旨在减少热应变并提高耐力性能.
- 预的有效性往往取决于体验到的热应变水平.
- 混合方法PreC结合了不同的冷却技术,以优化生理反应.
研究的目的:
- 调查混合方法PreC对20公里自行车时间试验 (CTT) 性能的影响.
- 评估不同表面温度 (AT) 对PreC.疗效的影响.
- 为了确定应用混合方法的最佳环境条件,Prec.C.
主要方法:
- 12名训练有素的男性骑自行车/三项运动员在35°C (热干),40°C (中度热湿) 和46°C (热湿) 三种AT下完成了6个20公里CTT.
- 每个AT条件都涉及30分钟混合方法预试验和没有预试验的对照 (CON) 试验.
- 监测了包括核心和皮肤温度,心率和感知劳动力的生理标志物.
主要成果:
- 性能 (2.5公里分割时间) 仅在46°C的AT条件下 (P=.02) 改进了PreC.
- 与CON相比,PreC降低了46°CAT (P=.01) 的皮肤温度,并增加了心率变化.
- 感知到的劳动力和热舒适度在46°CAT的PreC时显著下降.
结论:
- 在热潮湿 (≥46°C AT) 条件下,建议在20公里CTT之前使用混合方法的PreC.
- 在适度热潮湿 (≤40°C AT) 条件下,应用PreC可能是有益的,但不建议在热干 (≤35°C AT) 条件下使用.
- 环境温度和湿度是决定预冷策略对自行车性能有效性的关键因素.
相关概念视频
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