Vesco KK, Leo MC, Karanja N, et al. One-year postpartum outcomes following a weight management intervention in pregnant women with obesity. Obesity (Silver Spring). 2016 Oct;24(10):2042-9. doi: 10.1002/oby.21597. (Original study)

OBJECTIVE: This analysis was focused on 1-year maternal and infant follow-up of a randomized trial that tested a weight management intervention conducted during pregnancy.

METHODS: One hundred fourteen women with obesity (mean BMI 36.7 kg/m(2) ) were randomly assigned at a mean of 15 weeks gestation to a weight management intervention or usual care control condition. The intervention ended at delivery and resulted in less gestational weight gain and a lower proportion of large-for-gestational-age newborns among intervention compared with control participants. The primary outcome at 12 months postpartum was maternal weight. Secondary outcomes included infant weight-for-age and weight-for-length z-scores.

RESULTS: At 1 year, mothers in the intervention group weighed 96.3 ± 18.6 kg and those in the control group 99.7 ± 19.2 kg. There was no significant difference between groups in change in weight from randomization to 1 year postpartum (b = -0.47, 95% CI: -4.03 to 3.08). There was a significant main effect of group for infant weight-for-age z-scores (b = -0.40, 95% CI: -0.75 to -0.05) but not infant weight-for-length z-scores (b = -0.20, 95% CI: -0.59 to 0.20).

CONCLUSIONS: A gestational weight management intervention did not influence maternal weight or infant weight-for-length at 1 year postpartum. Future studies may be warranted to determine whether extending prenatal interventions into the postpartum period would be beneficial for maternal and infant outcomes.

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Physician rater

As a General practitioner, I find that the healthy moms trial examines maternal weight at 1 year postpartum. It's possibly the only trial to examine both infant weight and adiposity as measured by skinfolds at the same time. Ongoing support for weight management may be required after delivery to sustain favorable weight changes attained during pregnancy. This inference is not surprising given the adult weight loss literature also shows that successful weight loss maintenance requires continued support.
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