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© 2020 Gao et al. Purpose: This study aimed to predict stage of exercise among Chinese patients with type 2 diabetes by using an extended theory of planned behavior model (TPB) incorporating descriptive norm and self-identity. Patients and Methods: Participants (N=791) were included in a cross-sectional study. Structural equation modeling was used to explain how the extended TPB could predict the stage of exercise. Results: The model accounted for 41% of the variance in stage of exercise and 81.1% of the variance in intention. Intention (β=0.359, P<0.01) and self-identity (β=0.236, P<0.001) had a direct effect on stage of exercise. Self-identity (β=0.261, P<0.001), descriptive norm (β=0.035, P<0.05) and PBC (β=0.683, P<0.001) were strong predicators of intention. The effects of self-identity and PBC on behavior were significantly mediated via intention. Age, BMI and stage of diet behavior were found to be significantly related to intention and behavior. Conclusion: This study has tested the usefulness of the extended TPB for explaining exercise in Chinese diabetic patients. To promote patients to start or continue exercising, interventions should target self-identity and controllability for physical activity.

Original publication

DOI

10.2147/PPA.S236813

Type

Journal article

Journal

Patient Preference and Adherence

Publication Date

01/01/2020

Volume

14

Pages

277 - 285