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Increasing physical activity: a quantitative synthesis

R K Dishman1, J Buckworth

  • 1Department of Exercise Science, University of Georgia, Athens 30602, USA. RDishman@uga.cc.uga.edu

Medicine and Science in Sports and Exercise
|June 1, 1996
PubMed
Summary

Physical activity interventions show moderate to large effects, particularly those using behavior modification and mediated delivery. Optimal strategies require further research to confirm effectiveness across diverse settings and populations.

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Area of Science:

  • Public Health
  • Behavioral Science
  • Exercise Science

Background:

  • National policies for increasing leisure physical activity face challenges due to limited understanding of effective interventions.
  • Community and clinical medicine require evidence-based strategies to promote physical activity.

Purpose of the Study:

  • To quantitatively meta-analyze the efficacy of interventions for increasing physical activity.
  • To identify moderating variables influencing intervention effectiveness in community and clinical settings.

Main Methods:

  • A meta-analysis of 127 studies involving approximately 131,000 subjects.
  • Examined 445 effects expressed as Pearson correlation coefficients (r).
  • Analyzed variations based on moderating variables across diverse settings (community, worksite, school, home, healthcare).

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Main Results:

  • The mean effect size was moderately large (r = 0.34), indicating a significant increase in physical activity.
  • Population effect size, weighted by sample size, was larger (r = 0.75), suggesting substantial impact.
  • Interventions employing behavior modification, mediated delivery, and targeting groups showed larger effects.

Conclusions:

  • Physical activity can be effectively increased through well-designed interventions.
  • Behavior modification principles and mediated delivery are key components for successful interventions.
  • Further experimental research is needed to optimize intervention components, settings, and population targeting for sustained physical activity increases.