Marinelli, Ryan, Parker, Alexandra ORCID: 0000-0002-2398-6306, Levinger, Itamar ORCID: 0000-0001-9194-2033, Bourke, Matthew ORCID: 0000-0001-7088-4516, Patten, Rhiannon ORCID: 0000-0002-1655-1849 and Woessner, Mary ORCID: 0000-0001-7001-8407 (2024) Resistance training and combined resistance and aerobic training as a treatment of depression and anxiety symptoms in young people: A systematic review and meta-analysis. Early Intervention in Psychiatry. ISSN 1751-7885

Abstract

Aim: To determine the treatment effect of resistance training in reducing symptoms of anxiety and depression in young people. Methods: We searched MEDLINE, PsychINFO, and PubMed for articles published in English from January 1980 to September 2023 for randomized controlled trials (RCT) that included at least 4 weeks of resistance training, with participants aged 26 years or younger with clinically elevated anxiety and depression symptoms. A random-effects meta-analysis was used to calculate a pooled effect size of resistance training pre-and post-intervention compared to control groups. The quality of evidence was assessed using the Cochrane risk-of-bias 2 (RoB 2) and Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) criteria. Results: Ten RCTs involving 376 participants (209 females and 127 males) across educational, clinical, and community based setting were eligible for inclusion in the analysis. Resistance training was associated with a significant reduction in depressive (Hedge's g = −1.06, 95% CI −1.61 to −0.51, p <.001) and anxiety (Hedge's g = −1.02, 95% CI −1.50 to −0.54, p <.001) symptoms. Substantial heterogeneity was observed in the analysis of depression symptoms (I2 = 79%) and anxiety symptoms (I2 = 66%). Six trials had a low risk of bias, four trials showed some concerns. The GRADE analysis demonstrated a high level of certainty for depressive symptoms and a moderate level for anxiety symptoms. Conclusion: Resistance training is an effective intervention in reducing depression and anxiety symptoms in young people, delivered across a range of settings. Future trials exploring the effect resistance training interventions with long-term follow up are warranted to understand the outcomes.

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