OBJECTIVE: This study aimed to assess the efficacy of a home-based lifestyle intervention delivered through Parents as Teachers (PAT), a national home-visiting organization, designed to minimize excessive weight gain through 12 months post partum in socioeconomically disadvantaged (SED) African American women with overweight or obesity. METHODS: This randomized controlled trial was conducted at a single center as part of the Lifestyle Interventions for Expectant Moms (LIFE-Moms) consortium. Analysis was conducted with 185 SED African American women (BMI 25.0 to 45.0 kg/m2 at pregnancy onset) retained from an original sample of 267 randomized to standard PAT or PAT plus Lifestyle, which embedded lifestyle therapy within standard PAT delivered prenatally and for 12 months post partum. RESULTS: Compared with standard PAT, the PAT plus Lifestyle group gained less weight (2.5 kg versus 5.7 kg; p = 0.01) and were more likely to return to their baseline weight (38.0% versus 21.5%; p = 0.01) from baseline to 12 months post partum. There were no differences between groups in cardiometabolic outcomes, indices of glycemic control and insulin sensitivity, and plasma lipid profile. The estimated cost of PAT plus Lifestyle was $81 more to deliver per family than standard PAT. CONCLUSIONS: PAT plus Lifestyle decreases weight gain during pregnancy through 12 months post partum in SED African American women with overweight or obesity at the start of pregnancy with minimal additional cost.

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