在高强度间歇训练期间,需要调整工作速度,以保持心率和RPE在高强度间歇训练中的热量
Hillary A Yoder1,2, Anne M Mulholland1,3, Hayley V MacDonald1
1Department of Kinesiology, The University of Alabama, Tuscaloosa, AL, United States.
在高强度间歇训练 (HIIT) 中保持感知劳动力 (RPE) 的目标评级需要比保持目标心率 (THR) 更少的工作率调整. 这表明,在炎热的条件下,RPE可能是HIIT更有效的强度控制.
科学领域:
- 运动生理学 运动生理学
- 环境生理学环境生理学
- 运动科学 运动科学 运动科学
背景情况:
- 在炎热的环境中,高强度间歇训练 (HIIT) 带来了独特的生理挑战.
- 保持目标心率 (THR) 或感知劳力的评分 (RPE) 是调节运动强度的常见方法.
- 之前的研究表明,在热的运动中使用RPE与THR时,生理应变和表现可能存在差异.
研究的目的:
- 调查在高温时HIIT期间保持目标RPE是否会导致较小的工作率调整,而不是保持THR.
- 为了确定基于RPE的HIIT是否会比基于THR的HIIT产生更大的热量和心血管应变.
- 为了检查RPE与THR在HIIT后在炎热条件下最大氧气吸收 (O2max) 减少的影响.
主要方法:
- 8名健康成年人完成了分级运动测试和4次35°C循环试验 (15分钟和43分钟的持续时间),使用THR或RPE来设置强度.
- HIIT协议包括工作间隔 (90%HRmax或17RPE) 和恢复 (70%HRmax或12RPE).
- 在试验前和试验后评估最大氧气摄入量 (O2max),并测量心率和直肠温度.
主要成果:
- 在43分钟的试验中,在基于THR的HIIT (46W) 与基于RPE的HIIT (30W) 相比,工作率在THR的HIIT (46W) 中下降了更多 (尽管不是显著的).
- 随着时间的推移,心率在基于RPE的HIIT中显著增加,但不是基于THR的HIIT,这表明THR的心血管漂移较少.
- 在43分钟的基于RPE的HIIT后,最大的氧气吸收 (O2max) 显著下降,但在基于THR的HIIT后却没有显著下降.
结论:
- 无论是RPE还是THR,都需要大幅降低工作速度,以在长时间的HIIT中保持强度.
- 基于THR的HIIT可能会减轻心血管漂移,并在炎热条件下更好地保持O2max,而不是基于RPE的HIIT.
- 虽然RPE允许潜在的更高的初始工作速度,但THR似乎更有效地维持在热中长时间HIIT期间的运动能力.
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