Evaluating a model of youth physical activity

Carrie D. Heitzler, Leslie A. Lytle, Darin J. Erickson, Daheia Barr-Anderson, John R. Sirard, Mary Story

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Objective: To explore the relationship between social influences, self-efficacy, enjoyment, and barriers and physical activity. Methods: Structural equation modeling examined relationships between parent and peer support, parent physical activity, individual perceptions, and objectively measured physical activity using accelerometers among a sample of youth aged 10-17 years (N=720). Results: Peer support, parent physical activity, and perceived barriers were directly related to youth activity. The proposed model accounted for 14.7% of the variance in physical activity. Conclusions: The results demonstrate a need to further explore additional individual, social, and environmental factors that may influence youth's regular participation in physical activity.

Original languageEnglish (US)
Pages (from-to)593-606
Number of pages14
JournalAmerican journal of health behavior
Issue number5
StatePublished - 2010


  • Children
  • Peers
  • Physical activity
  • Self efficacy
  • Social support


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