A national longitudinal study of the association between hours of TV viewing and the trajectory of BMI growth among US children

J Pediatr Psychol. Nov-Dec 2008;33(10):1100-7. doi: 10.1093/jpepsy/jsn034. Epub 2008 Apr 4.

Abstract

Objectives: To assess the association between hours of TV viewing and the trajectory of BMI growth from Kindergarten to Grade 5 among a national longitudinal cohort of 7,334 US children.

Methods: Multilevel growth curve modeling was used to estimate children's BMI growth trajectories as a function of hours of TV viewing over time while controlling for gender, race/ethnicity, SES, birth weight, and baseline age.

Results: Hours of TV viewing were significantly positively associated with the acceleration of BMI growth from Kindergarten to Grade 5.

Conclusions: Hours spent watching TV may be contributing to the recent dramatic increase in the prevalence of overweight and obesity among children.

MeSH terms

  • Age Factors
  • Birth Weight
  • Body Mass Index*
  • Child
  • Child, Preschool
  • Cohort Studies
  • Cross-Sectional Studies
  • Female
  • Humans
  • Life Style
  • Longitudinal Studies
  • Male
  • Obesity / epidemiology*
  • Obesity / etiology
  • Risk Assessment
  • Sex Factors
  • Socioeconomic Factors
  • Television / statistics & numerical data*
  • United States