休息时和运动期间对热皮肤的心血管反应
Ting-Heng Chou1, Edward F Coyle2
1Center for Regenerative Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
Temperature (Austin, Tex.)
|August 9, 2023
概括
耐力运动期间的热皮肤显著影响心血管反应. 运动强度决定心脏输出是否增加或维持,影响血压和肌肉氧化.
科学领域:
- 心血管生理学心血管生理学
- 运动生理学 运动生理学
- 热调节 热调节 热调节
背景情况:
- 耐力运动期间热应激的综合性心血管反应是复杂的.
- 皮肤温度是影响这些反应的关键变量,特别是在38°C以上.
- 运动强度调节心血管系统适应热应激的适应.
研究的目的:
- 审查皮肤温度升高如何影响心血管系统在次极限耐力运动期间.
- 阐明运动强度在心血管调整热皮肤状况中的作用.
主要方法:
- 审查当前关于心血管对运动期间热应激反应的科学文献.
- 分析改变皮肤血流,静脉律,心率和中风体积的生理机制.
主要成果:
- 在休息和低强度运动时,热皮肤会增加皮肤的血液流动,并消除皮肤静脉律,导致血液聚集,但通过增加心率保持心率输出.
- 在中度至强度运动期间,由于交感活动,热皮可能无法消除皮肤静脉收缩.
- 热皮肤通过减少心室填充时间来减少强度运动期间的中风体积,从而限制心脏输出升高.
结论:
- 运动强度是耐力运动期间心血管对热皮肤反应的关键决定因素.
- 在低强度时,心血管系统可以弥补热皮肤的影响,以维持心脏输出.
- 在更高的强度下,炎热的皮肤会损害中风体积,限制心脏输出能力,影响生理调节.
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