Social Cognitive Mediators of Change in a Group Randomized Nutrition and Physical Activity Intervention: Social Support, Self-efficacy, Outcome Expectations and Self-regulation in the Guide-to-Health Trial

In an evaluation of the theoretical foundations of behavior change, the current study examined whether social cognitive (SCT) variables mediated treatment effects on physical activity and nutrition in the recently reported Guide-to-Health trial (GTH). Adults (N = 661) were assessed at baseline, seve...

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Bibliographic Details
Published in:Journal of health psychology 2010-01, Vol.15 (1), p.21-32
Main Authors: Anderson, Eileen S., Winett, Richard A., Wojcik, Janet R., Williams, David M.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Aged, 80 and over
Behavior change
Behavioural changes
Cognitive behavioral therapy
Cognitive development
Eating disorders
Energy Intake
Group Processes
Groups
Health
Health Behavior
Humans
Medical treatment
Middle Aged
Motor Activity
Nutrition
Nutritional Status
Ombudsman
Physical activity
Religion
Self
Self Efficacy
Self regulation
Selfregulation
Social behaviour
Social cognition
Social Control, Informal
Social Perception
Social Support
Surveys and Questionnaires
Variables
Young Adult
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Summary:In an evaluation of the theoretical foundations of behavior change, the current study examined whether social cognitive (SCT) variables mediated treatment effects on physical activity and nutrition in the recently reported Guide-to-Health trial (GTH). Adults (N = 661) were assessed at baseline, seven months and 16 months to examine whether treatment-related changes in SCT variables at seven months mediated change in nutrition and physical activity at 16 months. GTH treatment effects were mediated by self-efficacy, self-regulation and social support; self-regulation mediated self-efficacy. Social-cognitive variables explained only part of the treatment effects suggesting future investigations evaluate the environmental-selection and affective processes of behavior change.
ISSN:1359-1053
1461-7277
DOI:10.1177/1359105309342297