Format

Send to

Choose Destination
See comment in PubMed Commons below
Acta Paediatr. 2014 Jan;103(1):e27-31. doi: 10.1111/apa.12447.

Lack of sleep could increase obesity in children and too much television could be partly to blame.

Author information

  • 1Centre for Health Initiatives, University of Wollongong, Wollongong, NSW, Australia. cmagee@uow.edu.au.

Abstract

AIM:

To examine the bidirectional relationship between short sleep duration and body mass index (BMI). A secondary aim was to investigate whether reduced physical activity and increased screen time (television and computer use) mediated these associations.

METHODS:

This study utilised data from the Longitudinal Study of Australian Children, which is an observational cohort study of Australian children. The sample included 2984 (52.4% boys) children followed from 4 to 5 years of age until 8 to 9 years of age. Sleep duration, screen time and covariates were reported by parents, with BMI measured objectively. Cross-lagged modelling investigated the bidirectional association between sleep duration and BMI; lagged panel mediation modelling examined physical activity and screen time as potential mediators.

RESULTS:

Short sleep duration at 4 to 5 years of age was significantly associated with higher BMI at 8 to 9 years of age (β= -.07, p = .044). The relationship between short sleep duration at 4 to 5 years of age and higher BMI at 8 to 9 years of age was partially mediated by increased television viewing at 6 to 7 years of age (β = -.01, 95% confidence interval [-.02, -.002]).

CONCLUSION:

Short sleep duration could be a risk factor for obesity in children. Increased television viewing may be one mechanism underlying this longitudinal relationship.

©2013 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.

KEYWORDS:

Mediation; Obesity; Sleep; Television viewing

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Wiley
    Loading ...
    Write to the Help Desk