之前的性或酸性对被动高温期间生理反应的影响
Jacky Soo1,2, Shernise Ng2,3, Chris Abbiss4
1Discipline of Exercise Science, Murdoch University, Perth, Western Australia, Australia.
Experimental physiology
|February 27, 2026
概括
用二碳酸或化改变血液pH值会影响身体在暴露于热量的过程中调节温度的方式. 酸化增加了通风和热不适,而性对这些反应的影响很小.
科学领域:
- 运动生理学 运动生理学
- 人体生理学 人体生理学
- 环境生理学环境生理学
背景情况:
- 温度调节和化学调节是关键的生理过程.
- 血液pH显著影响细胞功能和全身反应.
- 了解血液pH值的变化如何影响热应激期间的生理反应,对于公众健康和运动表现至关重要.
研究的目的:
- 调查诱导的血和酸化对被动高温期间温度调节和化学调节反应的影响.
- 为了检查操纵血液pH值对通风参数,核心体温和热感知的影响.
主要方法:
- 12名健康的男性参与了3次随机,双盲,对抗平衡的实验.
- 通过热水浸泡 (40°C) 在摄入玉米粉 (安慰剂),化 (酸化) 或碳酸 (血症) 后诱导被动高温症.
- 测量了通风参数,直肠温度 (Tre) 和热感知.
主要成果:
- 碳酸增加了血液pH和HCO,而化降低了两者.
- 分钟通风与酸性酶 (AC) 增加,但与安慰剂 (PLA) 相比,与性血 (SB) 保持不变.
- 与安慰剂 (PLA) 和血症 (SB) 相比,热感和不适感在酸性化 (AC) 条件下显着更高.
结论:
- 之前的血症或酸症在高温症期间显著影响呼吸反应.
- 诱导性酸性化会加剧热不适,并在暴露于热量时改变通风控制.
- 这些发现强调了酸平衡在调节对热应激的生理和感知反应中的作用.
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