Association of trimester-specific gestational weight gain with child BMI by maternal BMI categories
Erin LeBlanc, Rachel Springer, Natalie Rosenquist, Anna Booman, Kimberly Vesco, Evelyn Sun, Byron Foster, Janne Boone-Heinonen

TL;DR
This study shows that gaining more weight during the first and second trimesters of pregnancy is linked to higher BMI in children at age 5, especially for mothers of normal weight or overweight.
Contribution
The study identifies trimester-specific gestational weight gain effects on child BMI across maternal BMI categories.
Findings
Higher total gestational weight gain was linearly associated with increased child BMI at 5 years.
First and second trimester weight gain showed stronger associations with child BMI z-scores than third trimester.
Associations were less significant in mothers with higher obesity classes.
Abstract
Background/Objectives: Information is lacking about how trimester-specific gestational weight gain (GWG) is associated with childhood body mass index (BMI) across maternal BMI categories. Subjects/Methods: We examined the association between GWG and child BMI in patients served by a national network of community health care organizations. We stratified by pre-pregnancy BMI (n=5721 normal weight; 5667 overweight; 3213 obesity class I; 1344 class II; 692 class III). Child BMI z-score and overweight and obesity status at age 5 were modeled as a function of total GWG and GWG rate in each trimester, controlling for GWG rate in previous trimester(s) and maternal characteristics, using modified Poisson regression. Results: Higher total GWG during pregnancy was positively associated with child BMI at 5 years of age in a linear, dose-dependent manner. When examined by trimester of pregnancy, a 1…
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Taxonomy
TopicsGestational Diabetes Research and Management · Birth, Development, and Health · Bariatric Surgery and Outcomes
