Prenatal exercise and its effects on postpartum mental health: systematic review and meta-analysis

The perinatal period, spanning from pregnancy through the first year after childbirth, is characterized by significant physiological, psychological, and socio-contextual changes. Women face complex stressors including psychosocial pressures, financial constraints, interpersonal dynamics, anticipatory stress related to parenthood, hormonal fluctuations, and societal expectations. These factors collectively influence the perinatal experience, increasing vulnerabilities and stress levels.

A systematic review was conducted in October 2023 using PubMed, SPORTDiscus, PsycInfo, and Scopus databases. Only English-language publications were included. For the meta-analysis, only randomized controlled trials (RCTs) using the Edinburgh Postnatal Depression Scale (EPDS) were considered. Data extraction was performed independently by two reviewers using Covidence, focusing on study characteristics, population demographics, interventions, and outcomes.

The initial search identified 2,373 articles, with 1,196 duplicates removed, leaving 1,177 articles. After screening titles and abstracts, 1,247 were excluded for not meeting the inclusion criteria, resulting in 30 full-text articles reviewed for eligibility by two researchers. Nineteen studies were included in the systematic review, with four in the meta-analysis. Results indicated that higher levels of physical activity during pregnancy were consistently associated with improved postpartum mental health outcomes, including reduced depressive symptoms, lower anxiety, and enhanced overall well-being. Low-intensity exercises, such as yoga, were particularly effective in reducing postpartum depressive symptoms. The impact of moderate-intensity exercise varied, with some studies showing no significant effects. The meta-analysis of four RCTs using the EPDS demonstrated a significant reduction in depression and anxiety symptoms among postpartum women who participated in physical activity interventions, with a substantial overall effect size.

Developing physical activity and exercise regimens encompassing a range of intensities can address the unique physiological and psychological demands of the perinatal period, maximizing the therapeutic benefits of physical activity interventions.