Predicting Stages of Change for Physical Activity in Individuals with Chronic Musculoskeletal Pain: An Integrative and Extended Self-Determination Theory Perspective
The purpose of this study was to examine the predictive ability of an integrative and extended self-determination theory (SDT) framework as a physical activity and exercise model for individuals with chronic musculoskeletal pain. Two hundred and eleven participants were recruited from clinic and community networks within the United States. Participants completed an online survey including a demographic questionnaire and brief instruments operationalizing the constructs of an integrative and extended SDT model. Data were analyzed using correlational analysis and multiple regression analysis. The findings of this study support the use of an integrative and extended SDT model in predicting physical activity and exercise behavior for individuals with chronic musculoskeletal pain. The model accounts for 56% of the variance in physical activity and exercise stages of change scores. Of the predictor variables, the most significant variables included self-efficacy, control beliefs, and behavioral intentions. A mediation analysis revealed physical activity and exercise partially mediated the relationship between functional disability and physical health related-quality of life. In addition, physical activity and exercise was found to partially mediate the relationship between functional disability and work participation. The results of this study provide empirical evidence supporting the predictive validity of an integrative and extended SDT model for physical activity and exercise participation for individuals with chronic musculoskeletal pain.