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App usability, engagement, and postpartum weight retention: secondary analysis of the INTER-ACT randomized controlled trial

2025-12-11 obstetrics and gynecology Title + abstract only
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BackgroundPostpartum weight retention (PPWR) is a key contributor to long-term obesity risk and an important determinant of maternal health. Mobile health (mHealth) interventions may support postpartum change to a healthier lifestyle, but their effectiveness may depends on usability. This study examined whether perceived usability of the INTER-ACT app was associated with weight loss at 6 months postpartum and whether this association was mediated by app use frequency, motivational power, and imp...

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