Does an intervention that improves infant sleep also improve overweight at age 6? Follow-up of a randomised trial

Arch Dis Child. 2011 Jun;96(6):526-32. doi: 10.1136/adc.2010.196832. Epub 2011 Mar 14.

Abstract

Objective: Short sleep duration may contribute to childhood obesity. Amenable to intervention, sleep thus provides a potential path for prevention. The authors aimed to determine the impact of a behavioural intervention that successfully reduced parent-reported infant sleep problems on adiposity at age 6.

Design: 5-year follow-up of a previously reported population-based cluster randomised trial. Participant allocation was concealed to researchers and data collection blinded.

Setting: Recruitment from well-child centres in Melbourne, Australia.

Participants: 328 children (174 intervention) with parent-reported sleep problems at age 7-8 months drawn from 49 centres (clusters).

Intervention: Behavioural sleep strategies delivered over one to three structured individual nurse consultations from 8 to 10 months, versus usual care. MAIN OUTCOMES AT AGE 6 YEARS: Body mass index (BMI) z-score, percentage overweight/obese and waist circumference.

Analyses: Intention-to-treat regression analyses adjusted for potential confounders.

Results: Anthropometric data were available for 193 children (59% retention) at age 6. There was no evidence of a difference between intervention (N=101) and control (N=92) children for BMI z-score (adjusted mean difference 0.2, 95% CI -0.1 to 0.4), overweight/obese status (20% vs 17%; adjusted OR 1.4, 95% CI 0.7 to 2.8) and waist circumference (adjusted mean difference -0.3, 95% CI -1.6 to 1.1). In posthoc analyses, neither infant nor childhood sleep duration were associated with anthropometric outcomes.

Conclusions: A brief infant sleep intervention did not reduce overweight/obesity at 6 years. Population-based primary care sleep services seem unlikely to reduce the early childhood obesity epidemic.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anthropometry / methods
  • Behavior Therapy / methods*
  • Body Mass Index
  • Child
  • Epidemiologic Methods
  • Female
  • Humans
  • Infant
  • Male
  • Overweight / epidemiology
  • Overweight / etiology
  • Overweight / prevention & control*
  • Sleep Wake Disorders / complications
  • Sleep Wake Disorders / epidemiology
  • Sleep Wake Disorders / therapy*
  • Socioeconomic Factors
  • Victoria / epidemiology
  • Waist Circumference

Associated data

  • ISRCTN/ISRCTN48752250