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Published on: March 7, 2019
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The Associations between Self-Determined Motivation, Multidimensional Self-Efficacy, and Device-Measured Physical
I-Hua Chu1,2,3, Yu-Ling Chen1, Pei-Tzu Wu4
1Department of Sports Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
Summary
Self-determined motivation and self-efficacy positively correlate with physical activity in healthy adults. However, these associations may change quickly, suggesting regular assessments are needed for sustained activity.
Area of Science:
- Exercise Science
- Behavioral Psychology
Background:
- Self-determined motivation (SDT) and self-efficacy are key to understanding physical activity.
- Limited research exists on the link between SDT, multidimensional self-efficacy, and device-measured physical activity in healthy adults.
Purpose of the Study:
- To investigate the associations between SDT, multidimensional self-efficacy, and objectively measured physical activity in healthy adults.
- To examine the predictive power of SDT and self-efficacy on physical activity over an eight-week period.
Main Methods:
- Participants (n=30) completed the Behavior Regulation in Exercise Questionnaire 2 (BREQ-2) and Multidimensional Self-Efficacy for Exercise Scale (MSES).
- Objective physical activity was measured using accelerometers over seven days at baseline and eight-week follow-up.
Main Results:
- Intrinsic motivation and scheduling self-efficacy were positively associated with moderate-to-vigorous physical activity (MVPA) energy expenditure and duration.
- The relative autonomy index, task, and scheduling efficacy predicted baseline physical activity.
- No SDT or self-efficacy variables predicted physical activity at the eight-week follow-up.
Conclusions:
- The relationship between motivation, self-efficacy, and physical activity may fluctuate over short durations.
- Regular assessment of motivation and self-efficacy is recommended for interventions promoting sustained physical activity in healthy adults.
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