曝光对运动前后心脏自主控制的影响
Thais C Marin1,2, Gustavo F Oliveira1,2, Luan M Azevêdo1
1Exercise Hemodynamic Laboratory, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
Chronobiology international
|September 8, 2025
概括
在健康的男性中,暴露于明亮光线并没有影响心率或心脏自主平衡的运动后. 昏暗的光线暴露会降低运动前的同情血管平衡,但这种效应在运动后会减弱.
科学领域:
- 生理学 生理学 生理学
- 自主神经系统的自主神经系统
- 环境光照暴露 环境光照暴露
背景情况:
- 心脏自主调节影响心率 (HR) 调节.
- 环境照明条件,如明亮的光 (BL) 和昏暗的光 (DL),可能会影响自主功能.
- 了解光线对交感血管平衡的影响对于运动生理学至关重要.
研究的目的:
- 为了研究明亮光 (BL) 暴露在有氧运动前后对交感动脉活动和心率 (HR) 控制的影响.
- 为了确定BL是否会加剧HR和心脏自主反应与暗光 (DL) 相比.
主要方法:
- 18名健康男性接受了两个条件:BL (5000卢克斯) 和DL (<8卢克斯).
- 参与者在循环人体表仪上进行了30分钟的有氧运动.
- 用光谱分析分析心率变化 (HRV) 来评估心脏自主调制 (LF/HF比) 在基线,运动前和运动后.
主要成果:
- 与DL相比,BL暴露没有改变HR或HRV (LF/HFRR) 运动前的低至高频率比率.
- 与BL相比,DL暴露显著降低了运动前LF/HFRR (p<0.01).与BL相比,DL暴露显著降低了运动前LF/HFRR (p<0.01).
- 运动后,LF/HFRR的增加在DL中大于BL (p=0.04),表明对交感血管平衡恢复的差异影响.
结论:
- 与假设相反,在健康男性中,BL暴露并没有加剧HR或心交平衡对炼的反应.
- DL暴露暂时降低了运动前的同情血管平衡,但这种效应在运动后没有持续.
- 环境光线条件可能在调节运动自主反应方面发挥作用,尽管在本研究中,BL的影响并不有害.
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