Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81763
Title: The neurophysiological and psychological mechanisms of qigong as a treatment for depression : a systematic review and meta-Analysis
Authors: So, WWY 
Cai, SH
Yau, SY 
Tsang, HWH 
Keywords: Qigong
Complementary and alternative medicine
Neurophysiological mechanism
Depression
Anti-depressive
Issue Date: 2019
Publisher: Frontiers Research Foundation
Source: Frontiers in psychiatry, 18 Nov. 2019, v. 10, 820, p. 1-13 How to cite?
Journal: Frontiers in psychiatry 
Abstract: Objective: An increasing number of studies have shown the anti-depressive effect of qigong. However, its underlying mechanism remains poorly understood. This study aims to systematically review and meta-analyze existing literature on the mechanism of qigong in reducing depression.
Method: The review process followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Randomized controlled trials of qigong were searched from PsycINFO, PubMed, Embase, ScienceDirect, and Academic Search Premier from inception to December 2018. Studies which involved depression and any neurophysiological or psychological mechanisms as outcomes were included. Publication bias was tested before conducting meta-analysis. Two independent raters were involved for the entire review process.
Results: A total of nine studies were identified which covered both neurophysiological and psychological mechanisms. Among these selected studies, seven were involved in meta-analysis, which suggested that qigong was effective in alleviating depression (standardized mean difference, SMD = -0.27, p < 0.05, I-2 = 27%). A significant effect was also found for diastolic blood pressure (SMD = -1.64, p < 0.05, I-2 = 31%). However, no significant effect was found for cortisol level and systolic blood pressure.
Conclusions: This review shows that qigong is effective in reducing depression through activating the parasympathetic nervous system. Future studies with higher quality of research methodology with less selection and attrition bias should be conducted to unravel the possible anti-depressive effect of qigong.
URI: http://hdl.handle.net/10397/81763
EISSN: 1664-0640
DOI: 10.3389/fpsyt.2019.00820
Rights: Copyright © 2019 So, Cai, Yau and Tsang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (https://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
The following publication So WWY, Cai S, Yau SY and Tsang HWH (2019) The Neurophysiological and Psychological Mechanisms of Qigong as a Treatment for Depression: A Systematic Review and Meta-Analysis. Front. Psychiatry 10:820, 1-13 is available at https://dx.doi.org/10.3389/fpsyt.2019.00820
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