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Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

BMI from 3-6 y of age is predicted by TV viewing and physical activity, not diet

R Jago1, T Baranowski, J C Baranowski

  • 1Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA. russ.jago@gmail.com

International Journal of Obesity (2005)
|May 13, 2005
PubMed

Insights

Physical activity and TV viewing predict children's BMI. Reduced physical activity and increased TV time are linked to higher BMI, especially around ages 6-7, suggesting interventions to prevent childhood obesity.

Area of Science:

  • Pediatric obesity research
  • Childhood development and health
  • Nutritional science and public health

Background:

  • Childhood obesity is a growing public health concern.
  • Understanding early life predictors of body mass index (BMI) is crucial for prevention.
  • Longitudinal studies tracking lifestyle factors in young children are needed.

Purpose of the Study:

  • To determine if diet, physical activity, sedentary behavior, or television (TV) viewing predict body mass index (BMI) in children aged 3-7 years.
  • To analyze the changing relationship between these lifestyle factors and BMI over time.

Main Methods:

  • A 3-year longitudinal study of a triethnic cohort of 3-4-year-old children.
  • Body mass index (BMI) assessed annually.
  • Physical activity measured via heart rate monitoring and observation.
  • Diet, sedentary behavior, and TV viewing assessed through direct observation.
  • Repeated measures regression analysis used to identify significant predictors.

Main Results:

  • Physical activity and TV viewing were significant predictors of BMI, beyond baseline BMI.
  • The predictive relationship of physical activity with BMI became negative over time.
  • TV viewing showed an increasing positive association with BMI in later study years.
  • Significant interactions indicated that physical activity and TV viewing predict BMI differently as children age.

Conclusions:

  • Physical activity and TV viewing are key modifiable factors influencing BMI in early childhood.
  • Aged 6-7 years appears to be a critical period where these factors significantly impact BMI.
  • Interventions focusing on reducing TV time and increasing physical activity may effectively prevent childhood obesity.
Abstract

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