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Effects of an antenatal dietary intervention in overweight and obese women on 6 month infant outcomes: follow-up from the LIMIT randomised trial.

Discipline of Obstetrics & Gynaecology, and The Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia. jodie.dodd@adelaide.edu.au. Women's and Babies Division, Department of Perinatal Medicine, The Women's and Children's Hospital, North Adelaide, SA, Australia. jodie.dodd@adelaide.edu.au. Women's and Babies Division; Department of Neonatal Medicine, The Women's and Children's Hospital, Adelaide, SA, Australia. Discipline of Obstetrics & Gynaecology, and The Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia. School of Public Health, The University of Adelaide, Adelaide, SA, Australia. South Australian Health and Medical Research Institute, Adelaide, SA, Australia.

International journal of obesity (2005). 2018;(7):1326-1335
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Abstract

BACKGROUND The immediate impact of providing an antenatal dietary intervention during pregnancy has been extensively studied, but little is known of the effects beyond the neonatal period. Our objective was to evaluate the effect of an antenatal dietary intervention in overweight or obese women on infant outcomes 6 months after birth. METHODS We conducted a follow up study of infants born to women who participated in the LIMIT trial during pregnancy. Live-born infants at 6-months of age, and whose mother provided consent to ongoing follow-up were eligible. The primary follow-up study endpoint was the incidence of infant BMI z-score ≥90th centile for infant sex and age. Secondary study outcomes included a range of infant anthropometric measures, neurodevelopment, general health, and infant feeding. Analyses used intention to treat principles according to the treatment group allocated in pregnancy. Missing data were imputed and analyses adjusted for maternal early pregnancy BMI, parity, study centre, socioeconomic status, age, and smoking status. Outcome assessors were blinded to the allocated treatment group. RESULTS A total of 1754 infants were assessed at age 6 months (Lifestyle Advice n = 869; Standard Care n = 885), representing 82.1% of the eligible sample (n = 2136). There were no statistically significant differences in the incidence of infant BMI z-score ≥90th centile for infants born to women in the Lifestyle Advice group, compared with the Standard Care group (Lifestyle Advice 233 (21.71%) vs. Standard Care 233 (21.90%); adjusted relative risk (aRR) 0.99; 95% confidence interval 0.82 to 1.18; p = 0.88). There were no other effects on infant growth, adiposity, or neurodevelopment. CONCLUSION Providing pregnant women who were overweight or obese with an antenatal dietary and lifestyle intervention did not alter 6-month infant growth and adiposity. TRIAL REGISTRATION Australian and New Zealand Clinical Trials Registry (ACTRN12607000161426).

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MeSH terms : Child Development