Inclusion of a rest period in diaphragmatic breathing increases high frequency heart rate variability: Implications for behavioral therapy.
Inclusion of a rest period in diaphragmatic breathing increases high frequency heart rate variability: Implications for behavioral therapy.
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DOI：
10.1111/psyp.12791
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发表时间：
2017-03
期刊：
影响因子：
3.7
通讯作者：
Carlson CR
中科院分区：
文献类型：
--
作者：
Russell ME;Scott AB;Boggero IA;Carlson CR
心率变异性（HRV）与积极的生理和心理效应相关。心率变异性受呼吸参数的影响，然而，关于加强心率变异性的最佳呼吸干预仍然存在争议。本研究的目的是测试在控制呼吸频率的同时，包含呼气后休息期是否能有效增加HRV。采用受试者内交叉设计，40名受试者被随机分配至包括呼气后休息期的呼吸模式或省略呼气后休息期的呼吸模式。参与者完成了每种呼吸模式的训练，练习了六分钟，并在练习之间的五分钟冲洗期间安静地坐着。参与者被告知以6次呼吸/分钟的速度进行自主呼吸（DB），有或没有呼气后休息期。在每次呼吸试验之前和期间收集心率、呼吸率、HF-HRV、RMSSD、LF-HRV、SDNN的记录。心率变异性指标来自导联1心电图记录。配对对比显示，呼气后休息期显著降低心率（p <0.001），增加HF-HRV（p <0.05）。呼吸频率（p > 0.05）、RMSSD（p > 0.05）和SDNN（p > 0.05）无差异。结果表明，省略呼气后休息期导致较高的LF-HRV（p < .05）。呼气后休息期改善HF-HRV，通常与自我调节控制相关，但呼气后休息期的重要性需要进一步探索。
Heart rate variability (HRV) is associated with positive physiological and psychological effects. HRV is affected by breathing parameters, yet, debate remains regarding the best breathing interventions for strengthening HRV. The objective of the current study was to test whether the inclusion of a post-exhalation rest period was effective at increasing HRV, while controlling for breathing rate. A within-subjects crossover design was used with 40 participants who were assigned randomly to a breathing pattern including a post-exhalation rest period or a breathing pattern that omitted the post exhalation rest period. Participants completed training on each breathing pattern, practiced for six minutes, and sat quietly during a five-minute washout period between practices. Participants were given instructions for diaphragmatic breathing (DB) at a pace of six breaths/minute with or without a post-exhalation rest period. Recordings of heart rate, breathing rate, HF-HRV, RMSSD, LF-HRV, SDNN were collected before and during each of the breathing trials. HRV indices were derived from Lead one ECG recordings. Pairwise contrasts showed inclusion of a post-exhalation rest period significantly decreased heart rate (p < .001) and increased HF-HRV (p < .05). No differences were found for breathing rates (p > .05), RMSSD (p > .05), and SDNN (p > .05). Results indicted omission of the post-exhalation rest period resulted in higher LF-HRV (p < .05). A post-exhalation rest period improves HF-HRV, commonly associated with self-regulatory control, yet a post-exhalation rest period’s importance requires further exploration.