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Exercise and Cardiac Output01:17

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Physical activity levels among children attending after-school programs.

Stewart G Trost1, Richard R Rosenkranz, David Dzewaltowski

  • 1Department of Nutrition and Exercise Sciences, Oregon State University, Corvallis, OR 97333, USA. stewart.trost@oregonstate.edu

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Children in after-school programs achieve moderate-to-vigorous physical activity (MVPA) levels, but boys and non-overweight children are more active. Free play offers more MVPA than structured activities.

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Area of Science:

  • Pediatric Exercise Science
  • After-School Program Research
  • Public Health and Physical Activity

Background:

  • After-school programs offer opportunities to promote physical activity (PA) in children.
  • Understanding PA levels within these programs is crucial for developing targeted interventions.
  • Variations in PA may exist based on sex, weight status, and activity context.

Purpose of the Study:

  • To quantify physical activity (PA) levels in children attending after-school programs.
  • To analyze PA during specific program sessions and activity types.
  • To compare PA differences between sexes and weight status groups.

Main Methods:

  • 147 students (grades 3-6) from seven Midwestern after-school programs participated.
  • Accelerometers (Actigraph GT1M) objectively measured physical activity for program duration.
  • PA intensity (sedentary, light, moderate, vigorous, MVPA) was assessed across six occasions.

Main Results:

  • Average daily MVPA was 20.3 minutes; boys showed higher MVPA than girls.
  • Overweight/at-risk children had less vigorous PA (VPA) but similar MVPA compared to normal-weight peers.
  • Free play sessions yielded significantly higher MVPA than structured or organized activities.

Conclusions:

  • After-school programs are valuable settings for children's physical activity.
  • Opportunities exist to enhance PA by optimizing program time and activity structure.
  • Targeted strategies may be needed to increase PA in specific subgroups.