Dennis Anheyer1, Anna K Koch2, Meral S Thoms2, Gustav Dobos2, Holger Cramer3. 1. Department of Internal and Integrative Medicine, Evang. Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany; National Centre for Naturopathic Medicine, Southern Cross University, Lismore, Australia. Electronic address: d.anheyer@kem-med.com. 2. Department of Internal and Integrative Medicine, Evang. Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany. 3. Department of Internal and Integrative Medicine, Evang. Kliniken Essen-Mitte, Faculty of Medicine, University of Duisburg-Essen, Essen, Germany; National Centre for Naturopathic Medicine, Southern Cross University, Lismore, Australia; Australian Research Center in Complementary and Integrative Medicine, Faculty of Health, University of Technology-Sydney, Sydney, Australia.
Abstract
INTRODUCTION: The reduction of obesity is an important challenge for health policy. Although dietary interventions are widely available, patient adherence is usually low. A promising alternative is yoga. We hypothesized that weight reduction through yoga is mediated by aspects related to eating habits as well as physical aspects. METHODS: This is an exploratory secondary analysis of a randomized controlled trial comparing the effects of yoga to waiting list in women with abdominal obesity. Body mass index (BMI) and waist circumference were assessed as outcomes; physical exercise habits, physical activity habits at leisure time, physical activity habits at work time, daily fruit and vegetable intake, nutrition self-efficacy, and physical self-efficacy were captured as mediators. Measures were assessed at weeks 0 and 12. The original trial was conducted between April and August 2015. The secondary analysis was performed December 2019. RESULTS:Forty patients were randomized to the 12 weekly yoga sessions (48.5 ± 7.9 years) and 20 patients to the waitlist group (46.4 ± 8.9 years). Physical exercise habits fully mediated the effect of yoga on BMI (B=-0.26;CI[-.56;-.07]). Daily fruit and vegetable intake partially mediated the effect of yoga on BMI (B=-0.13;CI[-.38;-.01]). No further mediation effects were found. CONCLUSIONS: Yoga supports people with overweight in eating healthier and increasing their physical activity which in turn leads to a reduced BMI. Yoga's effects on waist circumference seem to be due to other mechanisms.
RCT Entities:
INTRODUCTION: The reduction of obesity is an important challenge for health policy. Although dietary interventions are widely available, patient adherence is usually low. A promising alternative is yoga. We hypothesized that weight reduction through yoga is mediated by aspects related to eating habits as well as physical aspects. METHODS: This is an exploratory secondary analysis of a randomized controlled trial comparing the effects of yoga to waiting list in women with abdominal obesity. Body mass index (BMI) and waist circumference were assessed as outcomes; physical exercise habits, physical activity habits at leisure time, physical activity habits at work time, daily fruit and vegetable intake, nutrition self-efficacy, and physical self-efficacy were captured as mediators. Measures were assessed at weeks 0 and 12. The original trial was conducted between April and August 2015. The secondary analysis was performed December 2019. RESULTS: Forty patients were randomized to the 12 weekly yoga sessions (48.5 ± 7.9 years) and 20 patients to the waitlist group (46.4 ± 8.9 years). Physical exercise habits fully mediated the effect of yoga on BMI (B=-0.26;CI[-.56;-.07]). Daily fruit and vegetable intake partially mediated the effect of yoga on BMI (B=-0.13;CI[-.38;-.01]). No further mediation effects were found. CONCLUSIONS: Yoga supports people with overweight in eating healthier and increasing their physical activity which in turn leads to a reduced BMI. Yoga's effects on waist circumference seem to be due to other mechanisms.