Measurement of Self-Efficacy and Proxy Efficacy for Middle School Youth Physical Activity

in Journal of Sport and Exercise Psychology
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  • 1 Kansas State University
  • | 2 University of Athens
  • | 3 Iowa State University
  • | 4 University of Kansas School of Medicine–Wichita
  • | 5 Iowa State University
  • | 6 Kaiser Permanente–Colorado
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This study developed youth self-efficacy (SEPA) and proxy efficacy (PEPA) measures for physical activity (PA). Proxy efficacy was defined as a youth’s confidence in his or her skills and abilities to get others to act in one’s interests to create supportive environments for PA. Each spring of their sixth-, seventh-, and eighth-grade years, middle school students completed SEPA and PEPA questions and then, for 3 days, recalled their previous day’s after-school PA. Exploratory and confirmatory factor analyses revealed a four-factor structure (SEPA for 1–3 days, SEPA for 5–7 days, PEPA-Parents, PEPA-School). Across study years, SEPA 1–3 days and 5–7 days increased and PEPA-Parents and PEPA-School decreased. Initial levels of PEPA-Parents and SEPA scales were associated with initial levels of PA. From sixth through seventh grade, changes in SEPA scales were associated with changes in PA. Studies should test whether interventions targeting self-efficacy and proxy efficacy influence PA.

Dzewaltowski is with the Community Health Institute, Kansas State University; Karteroliotis is with the Department of Physical Education and Sport Science, University of Athens; Welk is with the Department of Health and Human Performance, Iowa State University; Johnston is with the Department of Preventive Medicine and Public Health, University of Kansas School of Medicine–Wichita; Nyaronga is with the Institute for Social and Behavioral Research, Iowa State University; and Estabrooks is with the Clinical Research Unit, Kaiser Permanente–Colorado.