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Testing a longitudinal integrated self-efficacy and self-determination theory model for physical activity post-cardiac rehabilitation

Shane N. Sweet, Michelle S. Fortier, Shaelyn M. Strachan, Chris M. Blanchard, Pierre Boulay
  • Michelle S. Fortier
    School of Human Kinetics, University of Ottawa, Ontario, Canada
  • Shaelyn M. Strachan
    Faculty of Kinesiology and Recreation Management, University of Manitoba, Winnipeg, Manitoba, Canada
  • Chris M. Blanchard
    Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
  • Pierre Boulay
    Faculty of Physical Education and Sports, University of Sherbrooke, Sherbrooke, Québec, Canada

Abstract

Self-determination theory and self-efficacy theory are prominent theories in the physical activity literature, and studies have begun integrating their concepts. Sweet, Fortier, Strachan and Blanchard (2012) have integrated these two theories in a cross-sectional study. Therefore, this study sought to test a longitudinal integrated model to predict physical activity at the end of a 4-month cardiac rehabilitation program based on theory, research and Sweet et al.’s cross-sectional model. Participants from two cardiac rehabilitation programs (N=109) answered validated self-report questionnaires at baseline, two and four months. Data were analyzed using Amos to assess the path analysis and model fit. Prior to integration, perceived competence and self-efficacy were combined, and labeled as confidence. After controlling for 2-month physical activity and cardiac rehabilitation site, no motivational variables significantly predicted residual change in 4-month physical activity. Although confidence at two months did not predict residual change in 4-month physical activity, it had a strong positive relationship with 2-month physical activity (β=0.30, P<0.001). The overall model retained good fit indices. In conclusion, results diverged from theoretical predictions of physical activity, but self-determination and self-efficacy theory were still partially supported. Because the model had good fit, this study demonstrated that theoretical integration is feasible.

Keywords

exercise, theory integration, cardiac rehabilitation

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Submitted: 2013-02-05 16:47:59
Published: 2014-01-13 14:24:57
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Copyright (c) 2014 Shane N. Sweet, Michelle S. Fortier, Shaelyn M. Strachan, Chris M. Blanchard, Pierre Boulay

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