The Effect of Tai Chi Chuan on Negative Emotions in Non-Clinical Populations: A Meta-Analysis and Systematic Review. Author: Zhang S1,2,3, Zou L4, Chen LZ1,3, Yao Y1,3, Loprinzi PD5, Siu PM6, Wei GX7,8 Affiliation: <sup>1</sup>Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China. <sup>2</sup>Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China. <sup>3</sup>Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China. <sup>4</sup>Exercise and Mental Health Laboratory, School of Psychology, Shenzhen University, Shenzhen 518061, China. <sup>5</sup>Exercise Psychology Laboratory, Department of Health, Exercise Science and Recreation Management, University of Mississippi, 215 Turner Center, Oxford, MS 38677, USA. <sup>6</sup>Division of Kinesiology, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong 999077, China. <sup>7</sup>Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China. weigx@psych.ac.cn. <sup>8</sup>Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China. weigx@psych.ac.cn. Conference/Journal: Int J Environ Res Public Health. Date published: 2019 Aug 21 Other: Volume ID: 16 , Issue ID: 17 , Special Notes: doi: 10.3390/ijerph16173033. , Word Count: 143 Tai Chi Chuan (TCC) as a typical mind-body practice has been investigated for its preventive role on negative emotions and has demonstrated its efficacy in healthy populations. However, the results are not consistent. We performed a meta-analysis and systematically evaluated the effect of TCC on selected negative emotions (i.e., anxiety and depression). Fourteen experimental studies from three English-and two Chinese-language databases were evaluated. The results showed that the positive effects of TCC on negative emotions were moderately to largely significant. In addition, although TCC significantly improved negative emotions in both the young adults and the older adults, old adults benefited more from TCC than young adults. These findings suggest that TCC is a worthy complementary non-pharmacological resource towards depression and anxiety and, thus, has great implications for the public health domain. KEYWORDS: Tai Chi Chuan; anxiety; depression; exercise; prevention PMID: 31438638 DOI: 10.3390/ijerph16173033