• Joshua L Paley, Melissa A Jones, Janet M Catov, Kara M Whitaker, Andrea C Kozai, and Bethany Barone Gibbs.
• Department of Health and Human Development, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
• J Womens Health (Larchmt). 2024 Aug 1; 33 (8): 112811381128-1138.

AbstractPurpose: Mental health is critical for a healthy pregnancy, yet few studies have evaluated its associations with best practice, objectively measured moderate- to vigorous-intensity physical activity (MVPA) or sedentary behavior (SED). This study evaluated associations of MVPA and SED with mental health across pregnancy. Materials and Methods: Two cohort studies (total n = 125, mean [standard deviation] 31 [5] years, and 14.4% Black) measured MVPA (waist-worn ActiGraph GT3X) and SED (thigh-mounted activPAL) as well as self-reported depressive symptoms and mood disturbance in each trimester. Associations of group-based trajectories of MVPA and SED with depressive symptoms and mood disturbance were analyzed using regression analyses, both overall and by trimester. Results: Overall, the medium versus low trajectory of MVPA was associated with lower levels of depressive symptoms (B = -1.82, 95% confidence interval [CI] -2.97 to -0.68). In the second trimester, women in either the medium or high MVPA trajectories had lower levels of depressive symptoms compared with women in the low MVPA trajectory (B = -8.73, 95% CI -15.74 to -1.71; and B = -2.18, 95% CI -3.80 to -0.56). SED trajectories were not associated with depressive symptoms. Higher trajectories of MVPA and lower trajectories of SED were associated with lower total mood disturbance, with significant associations in the second trimester for MVPA and the first and second trimesters for SED. Higher MVPA trajectories were associated with higher tension, fatigue, and confusion subscales, while higher SED trajectories were associated with higher anger and fatigue and lower esteem and vigor subscales. Conclusions: MVPA and SED levels appear to affect mental health during pregnancy, although larger prospective studies are warranted. Clinical Trail Registration Number: NCT03084302.

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