Social support as a predictor of diet and exercise self-efficacy in patients with coronary artery disease

Objectives: This study examined the role of social support and other factors in relation to exercise and diet self-efficacy in Chinese patients with coronary heart disease in Hong Kong.Methods: A cross-sectional study was conducted on a convenience sample identified from two cardiac rehabilitation centers. Eighty-five participants joined the study.Results: Both self-efficacy measures correlated with social support, in particular in the domains of emotional/informational support and positive social interactions. Stronger social support was independently associated with a higher level of exercise and diet self-efficacy. Patients with a higher body mass index had a lower level of exercise self-efficacy, whereas social drinkers had a lower level of diet self-efficacy.Conclusions: Our data supported an association between social support and self-efficacy. It was suggested that social companions would help patients get greater confidence in overcoming barriers to lifestyle modification. Further studies may investigate what type of social support contributes to improving the self-efficacy beliefs of patients.