Slow-Paced Breathing and Autonomic Function in People Post-stroke.
Slow-Paced Breathing and Autonomic Function in People Post-stroke.
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DOI：
10.3389/fphys.2020.573325
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发表时间：
2020
影响因子：
4
通讯作者：
Keller-Ross ML
中科院分区：
文献类型：
--
作者：
Larson M;Chantigian DP;Asirvatham-Jeyaraj N;Van de Winckel A;Keller-Ross ML
目的：确定6次/分钟的急性慢呼吸是否会改善脑卒中后成人的压力反射敏感性（BRS）和心率变异性（HRV），并降低血压（BP）。方法：12个人完成了两次随机的研究访问，在那里他们以6次呼吸/分钟（慢）和12次呼吸/分钟（对照）进行了15分钟的呼吸练习。测量整个过程中的连续血压和心率（HR），并计算和分析呼吸练习前（前）、期间和之后（后）的BRS、BRS对血压升高的反应（BRSup）、BRS对血压下降的反应（BRSdown）和HRV。结果：BRS从慢呼吸前到慢呼吸后增加10% (p = 0.012)， BRSup从慢呼吸前到慢呼吸时增加30% （p = 0.04）。两种呼吸状态下BRSdown均高于呼吸前和呼吸后（p < 0.05）。两种呼吸条件下HR（对照组：Δ−4±4；慢速：Δ−3±4次/分，时间，p < 0.01）和收缩压（对照组：Δ−0.5±5；慢速：Δ−6.3±8 mmHg，时间，p < 0.01）均下降。在6次/min呼吸条件下（条件×时间，p < 0.001），总功率、低频功率和正常搏动间隔（SDNN）标准差均增加，而两种呼吸条件下的高频频率均增加（时间效应，p = 0.009）。结论：本研究表明，在中风后，缓慢呼吸可能会增加BRS，特别是BRSup，而不是典型的呼吸空间；然而，以缓慢或典型的呼吸频率进行有节奏的呼吸似乎有利于急剧降低收缩压和心率，并增加HRV。
Purpose: To determine if acute slow breathing at 6 breaths/min would improve baroreflex sensitivity (BRS) and heart rate variability (HRV), and lower blood pressure (BP) in adults after stroke. Methods: Twelve individuals completed two randomized study visits where they performed a 15-min bout of breathing exercises at 6 breaths/min (slow) and at 12 breaths/min (control). Continuous BP and heart rate (HR) were measured throughout, and BRS, BRS response to elevations in blood pressure (BRSup), BRS response to depressions in blood pressure (BRSdown), and HRV were calculated and analyzed before (pre), during, and after (post) breathing exercises. Results: BRS increased from pre to post slow breathing by 10% (p = 0.012), whereas BRSup increased from pre to during slow breathing by 30% (p = 0.04). BRSdown increased from pre to post breathing for both breathing conditions (p < 0.05). HR (control: Δ − 4 ± 4; slow: Δ − 3 ± 4 beats/min, time, p < 0.01) and systolic BP (control: Δ − 0.5 ± 5; slow: Δ − 6.3 ± 8 mmHg, time, p < 0.01) decreased after both breathing conditions. Total power, low frequency power, and standard deviation of normal inter-beat intervals (SDNN) increased during the 6-breaths/min condition (condition × time, p < 0.001), whereas high frequency increased during both breathing conditions (time effect, p = 0.009). Conclusions: This study demonstrated that in people post-stroke, slow breathing may increase BRS, particularly BRSup, more than a typical breathing space; however, paced breathing at either a slow or typical breathing rate appears to be beneficial for acutely decreasing systolic BP and HR and increasing HRV.
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DOI：
10.1016/j.jamcollsurg.2007.10.005
发表时间：
2008-03-01
影响因子：
5.2
作者：
Inaba, Kenji;Teixeira, Pedro Gr;Demetriades, Demetrios
通讯作者：
Demetriades, Demetrios
影响因子：
9.9
作者：
Ay, H;Koroshetz, WJ;Sorensen, AG
通讯作者：
Sorensen, AG
影响因子：
3.3
作者：
ANGELONE, A;COULTER, NA
通讯作者：
COULTER, NA
影响因子：
--
作者：
Dick, Thomas E.;Hsieh, Yee-Hsee;Dhingra, Rishi R.;Baekey, David M.;Galan, Roberto F.;Wehrwein, Erica;Morris, Kendall F.
通讯作者：
Morris, Kendall F.
影响因子：
37.8
作者：
Benjamin, Emelia J.;Virani, Salim S.;Muntner, Paul
通讯作者：
Muntner, Paul