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Physical activity and motivational predictors of changes in health behavior and health among DM2 and CAD patients
Halvari, Hallgeir Healey, J. Olafsen, Anja H. Byrkjeland, R. Deci, Edward Williams, Geoffrey C.
Halvari, Hallgeir
Healey, J.
Olafsen, Anja H.
Byrkjeland, R.
Deci, Edward
Williams, Geoffrey C.
Abstract
This study tested a physical activity intervention and the self-determination theory (SDT) process model of health behaviour change and health among 108 adult patients with both diabetes mellitus type 2 (DM2) and coronary artery disease (CAD). Patients were randomly assigned to an organized physical activity intervention group (led by instructors) or a non-physical activity control group. At baseline and after 12 months, we measured the following: needs satisfaction, autonomous and controlled motivation for physical activity, perceived competence for physical activity and blood sugar testing, physical activity and blood sugar testing, body weight, glucose control (HbA1c), and self-perceptions of general health and vitality. The intervention produced, as hypothesized, significant changes in all study variables in favor of the experimental group (Cohen’s d effect sizes: 0.23–0.72), except the non-significant result for controlled motivation and body weight. The data supported the SDT process model, in which the effect of the intervention significantly predicted indirect changes in behavior and health through motivation variables. Considering the moderate to large effects on increases in motivation, behavior, and health, promoting organized physical activity programs that are perceived as need-supportive may have important health implications for patients with DM2 and CAD.
Keywords
Date
2017
Type
Journal article
Journal
Scandinavian Journal of Medicine & Science in Sports
Book
Volume
27
Issue
11
Page Range
1454-1469
Article Number
ACU Department
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Source URL
Event URL
Open Access Status
License
File Access
Controlled