The Effectiveness of Physical Exercise in Preventing Postpartum Depression: A Systematic Review of Randomized Controlled Trials (2019–2024)

Background: Postpartum Depression (PPD) affects 13-19% of moms following childbirth. Globally, around 350,000 maternal deaths occurred in 2022, with depression accounting for 22% of all postpartum deaths. Exercise is increasingly being examined as a preventive intervention. Objective: To determine the effectiveness of exercise, specifically its type, intensity, and duration in reducing postpartum depression. Subjects and Methods: A systematic review was conducted in accordance with the PRISMA standards. Searches for (postpartum AND exercise) or (physical activity AND lessened postpartum depression) yielded 11 suitable studies. Data were retrieved on activity features and PPD outcomes, which were predominantly evaluated using the Edinburgh Postnatal Depression Scale (EPDS). Results: Aerobic exercise was the most constant and successful intervention. Women who engaged in moderate-intensity aerobic exercise (30-45 minutes, 3-5 times per week) had significantly lower depression symptoms than controls (standardized mean difference [SMD] = -0.42; 95% CI: -0.65 to -0.19; p < 0.001). Exercise interventions were also linked to a 32% lower chance of having PPD (risk ratio [RR] = 0.68; 95% CI: 0.52 to 0.85). Subgroup analyses suggested greater benefits when exercise was initiated during pregnancy and continued postpartum. Conclusions: Structured physical exercise can be considered a safe, low-cost adjunct to prevent the occurrence of Postpartum Depression in mother psychological well-being through enhanced endorphin release and body image perception. Integration of exercise into maternal health programs may substantially reduce the burden of postpartum depression.