在低毒条件下,HRV和天然气交换门之间的协议仍然有效吗?
Youmna Elsayed Hassanein1, Bruce Rogers2, Dania Ibrahim1
1College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, QATAR.
Medicine and science in sports and exercise
|April 28, 2025
概括
心率变化值 (HRVT) 与正常和缺氧的气体交换值保持一致. 然而,缺氧减弱了相关性和等效性,增加了HRVT的偏差和协议极限.
科学领域:
- 运动生理学 运动生理学
- 心血管生理学心血管生理学
背景情况:
- 心率变化值 (HRVT) 是从分离波动分析alpha1 (DFA a1) 中得出的,在正常条件下通常与基于气体交换的值保持一致.
- 急性缺氧对HRVT和气交等效之间的协议的影响仍然不太清楚.
研究的目的:
- 调查急性缺氧是否会影响HRVT与增量循环期间的气体交换衍生值之间的协议.
- 为了在气交值 (GET) 和呼吸补偿点 (RCP) 的氧气消耗 (V̇O2) 和心率 (HR) 与在正常和缺氧条件下的HRVTs进行比较.
主要方法:
- 十二名参与者完成了在normobaric缺氧 (FIO2 ≈ 13.5%) 和normoxia. 的增量坡道测试.
- 气体交换,呼吸器反应和高采样率心电图用于DFA a1来确定值.
- 在GET:HRVT1和RCP:HRVT2之间使用Pearson的r相关性和Bland-Altman分析进行了比较.
主要成果:
- 在两种条件下,在GET:HRVT1和RCP:HRVT2之间没有观察到V̇O2和HR的统计学上显著差异.
- 通过了所有诺莫克斯比较和低氧时的GET:HRVT1等效测试.
- 皮尔森的r相关性在低氧 (0.580.79) 与正常氧 (0.860.96) 相比较较弱,在低氧测试期间偏差和协议极限增加.
结论:
- HRVTs在normoxia和hypoxia中保持与GET和RCP的对齐,但这种关系的强度在hypoxia中减少.
- 虽然单独的HRVT可能为低氧训练提供一些指导,但其可靠性降低了.
- 建议在缺氧运动期间进行进一步的研究,包括补充代用标记物,以获得更强大的训练边界指导.
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