Efficacy of Yoga in Reducing Depressive Symptoms: A Systematic Review

Abstract

Introduction: The fast pace of changes in contemporary life increases the need to adapt, which leads to depressive pathologies due to psychological suffering. Yoga has therefore emerged as a complementary approach to the treatment of depression. Objective: To analyze the efficacy of yoga in reducing depressive symptoms. Materials and methods: This is a systematic literature review, which followed the Joanna Briggs Institute methodology for systematic reviews of efficacy, with the review protocol registered on Prospero under the code CRD42023448158. To devise the research question, the Pico strategy was adopted, in which “P” stands for people with depression, “I” for yoga; “C” for people who have not been submitted to yoga, and “O” for improvement/reduction of depressive symptoms. The requirements of the Prisma flowchart were followed and the search was conducted in the Medline/PubMed, Web of Science, Lilacs, BDEnf, Ibecs, PsycINFO, and Cinahl databases. The Jadad scale was used to assess methodological quality and the Cochrane Risk of Bias 2 to assess the risk of bias. Results: A total of 1138 studies were found, of which 10 were selected for data extraction, detailed reading, and qualitative synthesis. Yoga, especially mindfulness yoga, has been shown to be an effective intervention for various conditions, including depression. Its benefits include significant improvements in depression severity, health-related quality of life, motor dysfunction, mobility, spiritual well-being, and parasympathetic nervous system activity. Conclusion: The studies highlight the efficacy of yoga in reducing depressive symptoms in various populations and contexts, highlighting its effectiveness as a complementary therapeutic approach in the management of depression.