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Improving fruit and vegetable consumption: a self-efficacy intervention compared with a combined self-efficacy and
Aleksandra Luszczynska1, Maciej Tryburcy, Ralf Schwarzer
1Department of Psychology, University of Sussex, Falmer, Brighton BN1 9QH, UK. al85@sussex.ac.uk
Health Education Research
|October 25, 2006
Summary
Interventions boosting self-efficacy or combining it with action plans improved fruit and vegetable intake. Changes in self-efficacy and planning predicted behavior changes, suggesting simple strategies can enhance health behaviors.
Area of Science:
- Health Behavior Change
- Nutrition Psychology
- Behavioral Science
Background:
- Dietary behavior change is crucial for public health.
- Self-efficacy and action planning are key psychological constructs influencing health behaviors.
- Understanding effective intervention strategies is essential for promoting fruit and vegetable consumption.
Purpose of the Study:
- To evaluate the impact of interventions targeting self-efficacy, alone or combined with action planning, on fruit and vegetable consumption.
- To compare the effectiveness of self-efficacy-focused interventions versus combined interventions.
- To explore the relationship between cognitive changes and behavioral outcomes.
Main Methods:
- A randomized controlled trial involving 200 adults.
- Three groups: self-efficacy intervention, combined self-efficacy and action planning intervention, and control group.
- Interventions delivered via email messages.
- Assessment of fruit and vegetable consumption, self-efficacy, and planning at 6-month follow-up.
Main Results:
- Both intervention groups showed significant and equal improvements in fruit and vegetable consumption compared to the control group.
- Changes in self-efficacy and action planning cognitions were positively associated with behavioral changes in the respective intervention groups.
- The effectiveness of the interventions was demonstrated by measurable changes in behavior.
Conclusions:
- Interventions targeting self-efficacy, with or without action planning, are effective in promoting fruit and vegetable consumption.
- Cognitive changes, specifically in self-efficacy and planning, play a significant role in driving health behavior change.
- Parsimonious interventions focusing on self-efficacy can be a viable strategy for improving dietary habits.
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