Effect of a 16-week Bikram yoga program on perceived stress, self-efficacy and health-related quality of life in stressed and sedentary adults: A randomised controlled trial.
Author: Hewett ZL1, Pumpa KL2, Smith CA3, Fahey PP4, Cheema BS5
Affiliation:
1School of Science and Health, Western Sydney University, Australia. Electronic address: zoehewett@hotmail.com.
2Research Institute for Sport and Exercise, University of Canberra, Australia.
3National Institute of Complementary Medicine, Western Sydney University, Australia.
4School of Science and Health, Western Sydney University, Australia.
5School of Science and Health, Western Sydney University, Australia; National Institute of Complementary Medicine, Western Sydney University, Australia.
Conference/Journal: J Sci Med Sport.
Date published: 2017 Aug 24
Other:
Pages: S1440-2440(17)30994-5 , Special Notes: doi: 10.1016/j.jsams.2017.08.006. [Epub ahead of print] , Word Count: 243
OBJECTIVES: The purpose of this study was to investigate the effect of 16 weeks of Bikram yoga on perceived stress, self-efficacy and health related quality of life (HRQoL) in sedentary, stressed adults.
DESIGN: 16 week, parallel-arm, randomised controlled trial with flexible dosing.
METHODS: Physically inactive, stressed adults (37.2±10.8 years) were randomised to Bikram yoga (three to five classes per week) or control (no treatment) group for 16 weeks. Outcome measures, collected via self-report, included perceived stress, general self-efficacy, and HRQoL. Outcomes were assessed at baseline, midpoint and completion.
RESULTS: Individuals were randomised to the experimental (n=29) or control group (n=34). Average attendance in the experimental group was 27±18 classes. Repeated measure analyses of variance (intention-to-treat) demonstrated significantly improved perceived stress (p=0.003, partial η2=0.109), general self-efficacy (p=0.034, partial η2=0.056), and the general health (p=0.034, partial η2=0.058) and energy/fatigue (p=0.019, partial η2=0.066) domains of HRQoL in the experimental group versus the control group. Attendance was significantly associated with reductions in perceived stress, and an increase in several domains of HRQoL.
CONCLUSIONS: 16 weeks of Bikram yoga significantly improved perceived stress, general self-efficacy and HRQoL in sedentary, stressed adults. Future research should consider ways to optimise adherence, and should investigate effects of Bikram yoga intervention in other populations at risk for stress-related illness.
TRIAL REGISTRATION: Australia New Zealand Clinical Trials Registry ACTRN12616000867493. Registered 04 July 2016. URL: http://www.anzctr.org.au/ACTRN12616000867493.aspx.
Copyright © 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.
KEYWORDS: Chronic disease; Hatha yoga; Inactivity; Psychological health
PMID: 28866110 DOI: 10.1016/j.jsams.2017.08.006
BACK
