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Acute effects of resonance frequency breathing on cardiovascular regulation


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Pagaduan, J, Wu, SSX ORCID: 0000-0001-5087-8813, Kameneva, T and Lambert, E 2019 , 'Acute effects of resonance frequency breathing on cardiovascular regulation' , Physiological Reports, vol. 7, no. 22 , pp. 1-10 , doi: 10.14814/phy2.14295.

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Acute slow breathing may have beneficial effects on cardiovascular regulation by affecting hemodynamics and the autonomic nervous system. Whether breathing at the resonance frequency (RF), a breathing rate that maximizes heart rate oscillations, induces differential effects to that of slow breathing is unknown. We compared the acute effects of breathing at either RF and RF + 1 breaths per minute on muscle sympathetic nervous activity (MSNA) and baroreflex function. Ten healthy men underwent MSNA, blood pressure (BP), and heart rate (HR) recordings while breathing for 10 min at their spontaneous breathing (SB) rate followed by 10 min at both RF and RF + 1 randomly assigned and separated by a 10‐min recovery. Breathing at either RF or RF + 1 induced similar changes in HR and HR variability, with increased low frequency and decreased high frequency oscillations (p p pp < .05) but the decrease did not differ to that seen during RF + 1 (−3.1 mmHg). The sympathetic baroreflex function remained unchanged at either breathing rates. The slope of the cardiac baroreflex function was unaltered but the cardiac baroreflex efficiency was improved during both RF and RF + 1. Acute breathing at either RF or RF + 1 has similar hemodynamic and sympatho‐inhibitory effects in healthy men.

Item Type: Article
Authors/Creators:Pagaduan, J and Wu, SSX and Kameneva, T and Lambert, E
Keywords: baroreflex, blood pressure, resonance frequency, sympathetic nervous activity
Journal or Publication Title: Physiological Reports
Publisher: Wiley
ISSN: 2051-817X
DOI / ID Number: 10.14814/phy2.14295
Copyright Information:

© 2019 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of The Physiological Society and the American Physiological Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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