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Before-school physical activity patterns among adolescents using accelerometer and GPS data.

James Woodforde1, Sjaan Gomersall2, Anna Timperio3

  • 1School of Human Movement and Nutrition Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia.

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Most adolescents don't meet physical activity guidelines. Before-school activity, particularly away from home and school, significantly contributes to daily moderate-to-vigorous physical activity (MVPA) in teens.

Keywords:
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Area of Science:

  • Adolescent Health
  • Physical Activity Research
  • Behavioral Science

Background:

  • Adolescents frequently fail to meet recommended physical activity (PA) guidelines.
  • The period before school presents a potential window for physical activity interventions.
  • Contextual understanding of physical activity patterns during the before-school segment is needed.

Purpose of the Study:

  • To analyze adolescents' physical activity (PA) levels in different locations before school.
  • To determine the contribution of before-school PA to daily activity and guideline adherence.
  • To identify factors associated with location-specific before-school PA.

Main Methods:

  • Cross-sectional study utilizing accelerometer and GPS data from 148 adolescents (mean age 14.7 years).
  • Objective measurement of physical activity intensity and location during the before-school period (6:00 AM to school start).

Main Results:

  • Adolescents accumulated an average of 9.7 minutes of before-school moderate-to-vigorous physical activity (MVPA).
  • The majority of before-school MVPA occurred in locations away from both home and school.
  • Key correlates of before-school PA included segment duration, age, socioeconomic status, and self-efficacy.

Conclusions:

  • Before-school physical activity (PA) makes a meaningful contribution to adolescents' daily moderate-to-vigorous physical activity (MVPA) levels.
  • Intervention strategies should consider the contexts and locations where adolescents are most active before school.
  • Understanding correlates like age and self-efficacy can inform targeted interventions to promote adolescent PA.