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Related Experiment Videos

Open-loop feedback to increase physical activity in obese children.

G S Goldfield1, L E Kalakanis, M M Ernst

  • 1Department of Psychology, University at Buffalo, Buffalo, NY 14260, USA.

International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity
|August 5, 2000
PubMed
Summary

Making sedentary activities conditional on physical activity increased activity levels in obese children. Higher physical activity goals led to greater engagement, suggesting contingency can be an effective strategy.

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Area of Science:

  • Pediatric obesity research
  • Behavioral interventions
  • Physical activity promotion

Background:

  • Childhood obesity is a significant public health concern.
  • Sedentary behaviors are prevalent in obese children.
  • Effective strategies to increase physical activity are needed.

Purpose of the Study:

  • To determine if contingent access to sedentary activities increases physical activity in obese children.
  • To examine the effect of different physical activity goal levels on engagement.

Main Methods:

  • Experimental design with 34 obese children (8-12 years) randomized into groups.
  • Contingent groups earned sedentary time by accumulating pedometer counts (750 or 1500).
  • Control group received noncontingent access; physical activity measured by pedometer and accelerometer.

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Main Results:

  • Both contingent groups showed significantly more physical activity than controls.
  • The 1500-count group engaged in more activity and moderate-to-vigorous physical activity than the 750-count group.
  • Contingent access successfully reinforced physical activity.

Conclusions:

  • Contingent access to sedentary activities can serve as a reinforcer for physical activity in obese children.
  • The level of physical activity achieved is influenced by the targeted goal.
  • Behavioral strategies can be tailored to increase physical activity in pediatric populations.