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Prevalence and factors associated with body mass index in children aged 9-11 years

Gerson Luis de Moraes Ferrari1, Victor Matsudo2, Peter T Katzmarzyk3

  • 1Centro de estudos do Laboratório de Aptidão Física de São Caetano do Sul (CELAFISCS), São Caetano do Sul, SP, Brazil; Universidade Federal de São Paulo (UNIFESP), Departamento de Pediatria, Centro de Atendimento e Apoio ao Adolescente, São Paulo, SP, Brazil.

Jornal De Pediatria
|May 17, 2017
PubMed

Insights

Over half of 9-11 year olds in São Caetano do Sul are overweight or obese. Body fat percentage and screen time were key factors associated with body mass index (BMI).

Area of Science:

  • Pediatrics
  • Public Health
  • Childhood Obesity Research

Background:

  • Childhood obesity is a growing global health concern.
  • Understanding prevalence and associated factors is crucial for intervention.

Purpose of the Study:

  • To determine the prevalence of overweight/obesity in 9-11 year olds.
  • To identify factors associated with body mass index (BMI) in this age group.

Main Methods:

  • Utilized data from the International Study of Childhood Obesity Lifestyle and the Environment (ISCOLE).
  • Assessed body composition via bipolar bioimpedance and physical activity/sedentary behavior using accelerometers.
  • Analyzed individual, family, and environmental factors using multilevel linear regression.

Main Results:

  • The mean BMI was 20.1 kg/m², with 51.8% of children classified as overweight/obese.
  • Body fat percentage (BF%) and screen time (ST) were significantly associated with BMI in the overall cohort.
  • Gender-specific analyses revealed BF% and ST associated with BMI in boys, while only BF% was associated in girls.

Conclusions:

  • A high prevalence of overweight/obesity exists in children from São Caetano do Sul.
  • Associated factors for BMI differ between genders, with body fat percentage being a common factor for both.
Abstract

Keywords:
Body compositionChildrenComposição corporalCriançasObesidadeObesityPublic healthSaúde pública

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