The Associations between Self-determined Motivation and Self-efficacy and Objectively Measured Physical Activity in Adults

• Main Authors: Cengde-De Shen, 沈承德
• Other Authors: I-Hua Chu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/01269393357380242397

碩士 === 高雄醫學大學 === 運動醫學系碩士班 === 101 === This study to examine the relations between self-determined motivation and self-efficacy and objectively measured physical activity in healthy adults. METHODS: The study recruited healthy adults. First, the participants completed the behavior regulation in exercise questionnaire version-2 (BREQ-2) and the multidimensional self-efficacy for exercise scale (MSES). Next, the participants wore a 3-axis accelerometer for seven days. All participants completed the same questionnaires and wore the accelerometer for seven days again 8 weeks later. RESULTS: Thirty healthy adults completed the study (12 men, 18 women). Results of the bivariate analysis showed that there were significant correlations between exercise frequency and external regulation, identified regulation and intrinsic motivation. There were also significant correlations between exercise energy expenditure and introjected regulation, identified regulation, and intrinsic motivation. There were also significant correlations between exercise duration and identified regulation, and intrinsic motivation. In addition, there were significant correlations between exercise scheduling efficacy and exercise frequency, exercise energy expenditure and exercise duration. Multiple regression analysis results showed autonomous regulations and relative autonomy index (RAI) predicted exercise frequency, energy expenditure, and duration 8 weeks later. Also, Scheduling efficacy predicted exercise frequency, energy expenditure, and duration 8 weeks later. CONCLUSIONS: These results provide strong evidence for a link between autonomous motivation and scheduling efficacy and objectively measured physical activity. Future intervention study may focus on enhancing an individual’s autonomous motivation and scheduling efficacy to increase the likelihood of exercise behavior change.