Journal Article

Infant adiposity following a randomised controlled trial of a behavioural intervention in obese pregnancy

Robson, S C, Bell, R, Seed, P T, White, S L, Hayes, L, Sattar, N, Poston, L, Levin, J, Briley, A L, Oteng-Ntim, E, Singh, C, Lawlor, D A, Godfrey, K M, Pasupathy, D, Patel, N, Flynn, A C, Nelson, S M, Wardle, J

2017

Overview

Objectives: Randomised controlled trials are required to address causality in the reported associations between maternal influences and offspring adiposity. The aim of this study was to determine whether an antenatal lifestyle intervention, associated with improvements in maternal diet and reduced gestational weight gain (GWG) in obese pregnant women leads to a reduction in infant adiposity and sustained improvements in maternal lifestyle behaviours at 6 months postpartum. Subjects and methods: We conducted a planned postnatal follow-up of a randomised controlled trial (UK Pregnancies Better Eating and Activity Trial (UPBEAT)) of a complex behavioural intervention targeting maternal diet (glycaemic load (GL) and saturated fat intake) and physical activity in 1555 obese pregnant women. The main outcome measure was infant adiposity, assessed by subscapular and triceps skinfold thicknesses. Maternal diet and physical activity, indices of the familial lifestyle environment, were assessed by questionnaire. Results: A total of 698 (45.9%) infants (342 intervention and 356 standard antenatal care) were followed up at a mean age of 5.92 months. There was no difference in triceps skinfold thickness z -scores between the intervention vs standard care arms (difference −0.14 s.d., 95% confidence interval −0.38 to 0.10, P =0.246), but subscapular skinfold thickness z -score was 0.26 s.d. (−0.49 to −0.02; P =0.03) lower in the intervention arm. Maternal dietary GL (−35.34; −48.0 to −22.67; P <0.001) and saturated fat intake (−1.93% energy; −2.64 to −1.22; P <0.001) were reduced in the intervention arm at 6 months postpartum. Causal mediation analysis suggested that lower infant subscapular skinfold thickness was partially mediated by changes in antenatal maternal diet and GWG rather than postnatal diet. Conclusions: This study provides evidence from follow-up of a randomised controlled trial that a maternal behavioural intervention in obese pregnant women has the potential to reduce infant adiposity and to produce a sustained improvement in maternal diet at 6 months postpartum.

• Publisher: Nature Publishing Group UK,Nature Publishing Group
• Subject: 692/163/2743/393 / 692/308/2779/777 / Adipose tissue / Adiposity - physiology / Adult / Age / Analysis / Body Mass Index / Body weight gain / Care and treatment / Causes of / Child Development - physiology / Confidence intervals / Diet / Epidemiology / Exercise / Female / Follow-Up Studies / Health aspects / Health Promotion and Disease Prevention / Health risk assessment / Humans / Infant / Infant, Newborn / Infants / Internal Medicine / Intervention / Lifestyles / Male / Maternal Nutritional Physiological Phenomena / Mediation / Medicine / Medicine & Public Health / Metabolic Diseases / Mothers / Obesity / Obesity - epidemiology / Obesity - physiopathology / Obesity - prevention & control / Obesity in children / Offspring / original-article / Physical activity / Physiological aspects / Postpartum / Postpartum Period - physiology / Pregnancy / Pregnancy Complications - epidemiology / Pregnancy Complications - physiopathology / Pregnancy Complications - prevention & control / Pregnant women / Prenatal Nutritional Physiological Phenomena / Public Health / Risk Reduction Behavior / Skinfold Thickness / Surveys and Questionnaires / Thickness / United Kingdom - epidemiology / Weight Gain - physiology / Weight reduction