在缓慢的呼吸过程中,长时间的呼气是否会增加HRV?
Zachary M Meehan1, Fred Shaffer2
1Department of Psychological and Brain Sciences, University of Delaware, 105 The Green, Wolf Hall, Newark, DE, 19716, USA. meehanz@udel.edu.
缓慢的呼吸会增加心率变化 (HRV). 这项研究发现,在每分钟6次呼吸时,1:1或1:2的吸入/呼气比率都没有显著影响HRV指标.
科学领域:
- 心血管生理学心血管生理学
- 生物反和神经反
- 心理生理学 心理生理学
背景情况:
- 缓慢的呼吸,特别是在一个人的共振频率 (RF) 中,是心率变化 (HRV) 生物反的组成部分.
- 虽然为增加HRV支持每分钟4.5至6.5次呼吸率 (bpm),但最佳的吸入/呼气 (IE) 比率仍然不清楚.
- 之前的研究对不同IE比率对HRV的影响提出了相互矛盾的发现.
研究的目的:
- 调查一下1:2 IE比率与1:1比率相比,是否会产生不同的HRV结果.
- 为了确定IE比率对时间域,频域和非线性HRV指标的影响.
- 通过控制呼吸速率 (RR) 和IE比率的一致性来解决先前研究中的方法挑战.
主要方法:
- 进行了原始研究 (N=26) 和复制研究 (N=16).
- 参与者进行了缓慢的呼吸,控制的RR为每小时6次.
- 比较HRV指标 (时间域,频域,非线性) 在1:1和1:2的IE比率之间.
主要成果:
- 最初的研究表明,在1:1和1:2的IE比率之间,时间域或频域HRV指标没有显著差异.
- 复制研究证实了这些发现,表明IE比率对这些HRV指标没有影响.
- 此外,复制研究发现IE比率对非线性HRV测量没有影响.
结论:
- 在1:1或1:2的IE比率下,以每分钟6拍的呼吸不会对HRV时间域,频域或非线性指标产生差异性影响.
- 这些发现表明,IE比率可能不是优化HRV在6bpm共振频率范围内的关键因素.
- 可能需要进一步的研究来探索其他呼吸参数或可能影响HRV反应的个体差异.
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