在健康的未经训练的年轻男性中,运动后低血压较大,在热的环境中运动后,与温和的环境相比
Masahiro Horiuchi1, Samuel J Oliver2
1Division of Human Environmental Science, Mount Fuji Research Institute, Japan; Faculty of Sports and Life Science, National Institute of Fitness and Sports in KANOYA, Japan.
Journal of thermal biology
|August 25, 2023
概括
与温带条件相比,在炎热的环境中炼会在未经训练的男性中引起更大的运动后低血压. 这与增加的汗流失,皮肤血流的增加和心率变化减少有关.
科学领域:
- 运动生理学 运动生理学
- 环境生理学环境生理学
- 心血管生理学心血管生理学
背景情况:
- 运动后低血压 (PEH) 是运动后血压下降.
- 环境热量可以影响运动期间和之后的心血管反应.
- 在不同的热条件下了解PEH对于运动处方至关重要.
研究的目的:
- 研究在热和温和环境中炼对未经训练的男性运动后血液动力学的影响.
- 为了确定较高的皮肤血管导电率,汗流量,较低的心率变化率 (HRV) 和心脏巴罗反射灵敏度 (cBRS) 是否解释了更高的热量PEH.
主要方法:
- 12名未经训练的健康男性在23°C (CON) 和35°C (HOT) 的环境中随机顺序完成了40分钟的腿部自行车运动.
- 运动后,参与者休息60分钟,同时测量血液动力学和温度调节变量.
- 测量包括平均动脉压,皮肤血管导电量,汗流量,HRV和cBRS.
主要成果:
- 在热环境中炼后,与CON (83 mmHg) 相比,在热环境中炼后观察到更大的运动后低血压 (60分钟的平均动脉压:78 mmHg).
- 在整个康复过程中,皮肤血管导电率较高,HRV和cBRS在HOT和CON中较低.
- 在HOT试验中,汗流量显著增加 (P < 0.001). PEH与汗流失,皮肤血管导电率和HRV有关,但不是cBRS.
结论:
- 与温带环境相比,在炎热的环境中炼会导致未经训练的男性在运动后出现较大的低血压.
- 这种增强的低血压部分原因是汗流量增加,皮肤血管导电率升高和心率变化降低.
- 研究结果强调了环境热量对运动后心血管调节的影响.
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