Evidence for a Multidimensional Self-Efficacy for Exercise Scale

• Autores: Wendy M. Rodgers, P.M. Wilson, C.R. Hall, S.N. Fraser, T.C. Murray
• Localización: Research quarterly for exercise and sport, ISSN 0270-1367, Vol. 79, Nº. 2, 2008, págs. 222-234
• Idioma: inglés
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• Resumen

  • This series of three studies considers the multidimensionality of exercise self-efficacy by examining the psychometric characteristics of an instrument designed to assess three behavioral subdomains: task, scheduling, and coping. In Study 1, exploratory factor analysis revealed the expected factor structure in a sample of 395 students. Confirmatory factor analysis (CFA) confirmed these results in a second sample of 282 students. In Study 2, the generalizability of the factor structure was confirmed with CFA in a randomly selected sample of 470 community adults, and discriminant validity was supported by theoretically consistent distinctions among exercisers and nonexercisers. In Study 3, change in self-efficacy in conjunction with adoption of novel exercise was examined in a sample of 58 women over 12 weeks. Observed changes in the three self-efficacy domains appeared to be relatively independent. Together, the three studies support a multidimensional conceptualization of exercise self-efficacy that can be assessed and appears to be sensitive to change in exercise behavior.