脚加热和小腿加热对葡萄糖耐受性和心率变化有相反的影响:一个随机,受控,交叉试验
Gabriele Sanchez1, Dena Prince1, Shelby Glasser1
1School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA.
概括
部分体温暴露会影响葡萄糖耐受性. 牛犊加热会使葡萄糖耐受性恶化,心率变异性降低,而足部加热可能会改善葡萄糖耐受性,但不会改变心率变异性.
科学领域:
- 生理学 生理学 生理学
- 代谢过程中的代谢.
- 自主神经科学 自主神经科学
背景情况:
- 热暴露对葡萄糖耐受性的影响受到暴露的身体表面积的程度的影响.
- 自主神经系统 (ANS) 平衡是热应激期间调节葡萄糖代谢的关键因素.
- 下肢的部分身体加热可能会对葡萄糖耐受性和ANS功能产生差异性影响.
研究的目的:
- 为了研究局部下肢热量暴露对葡萄糖耐受性的影响.
- 评估脚加热与小腿加热对自主神经系统平衡的影响,通过心率变化 (HRV) 测量.
- 将这些效应与热中性控制条件进行比较.
主要方法:
- 一个随机,受控,交叉试验,涉及31名健康参与者.
- 在三种条件下测量葡萄糖耐受性,心率变化,鼓膜温度和其他生理参数:热中性,脚加热和小腿加热.
- 在2个小时内,每30分钟收集一次数据.
主要成果:
- 牛犊加热显著增加了90分钟的血糖水平,并降低了HRV.
- 脚加热倾向于降低90分钟的血糖水平,而不会显著影响HRV.
- 虽然心率和热舒适度随着加热而增加,但在各种条件下,血压和体温保持相似.
结论:
- 局部小腿加热似乎会损害葡萄糖耐受性,并破坏自主神经系统平衡.
- 局部足部加热可能为葡萄糖耐受性提供潜在的好处.
- 心率变异性变化与葡萄糖耐受性变化相关,这表明其在监测ANS对局部热暴露的响应对血糖控制的效用.
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