Research
Adherence
Improvements in self-efficacy and understanding of the behavior change process mediate successful dietary change through engagement in coping planning and self-monitoring, but these same mediators do not translate to increased physical activity.
To change diet, focus on building self-efficacy and understanding the process, then use coping planning and self-monitoring. These steps may not work for increasing physical activity, suggesting different strategies are needed for exercise.
GoodQualifiesMEDIUM confidence
Improvements in self-efficacy and understanding of the behavior change process were associated with engagement in coping planning and self-monitoring activities, and successful dietary change at four and 12 months. While participants reported improvements in motivational and social support variables, there was no effect of these, or of the intervention overall, on physical activity.
Why this rating
Process evaluation of RCT testing theoretical mediators.
Source
Processes of behavior change and weight loss in a theory-based weight loss intervention program: a test of the process model for lifestyle behavior change
Fiona Gillison et al. · International Journal of Behavioral Nutrition and Physical Activity · 2015
DOI 10.1186/s12966-014-0160-6
rct · n=108Cited 156×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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- A theory-based group weight loss intervention significantly increases dietary fiber intake, which mediates weight loss, but fails to significantly increase objectively measured physical activity despite improvements in self-efficacy and social support for activity.Good
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