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It is unknown to what extent higher maternal blood pressure (BP) in early postpartum impacts the relationship between higher maternal weight status and greater infant weight gain in early postpartum.

To evaluate the mediating role of higher maternal BP at 1 month postpartum on the association between higher maternal weight status at 1 month postpartum and greater infant weight gain over 6 months postpartum.

Participants were 169 Hispanic mother‐infant pairs. Maternal body mass index (BMI) and BP were assessed at 1 month postpartum. Infant weight was measured at 1 and 6 months postpartum to calculate weight‐for‐age z scores (WAZ). Multiple linear regression models were used for prediction, and Sobel test was used to determine mediation.

Controlling for maternal pre‐pregnancy BMI, age, delivery mode, infant sex, and infant birth weight revealed that both …