Cited by 107Behavioral Health and InterventionsNutrition, Health and Food BehaviorMedia Influence and Health

Planning and self-efficacy can increase fruit and vegetable consumption: a randomized controlled trial

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Kreausukon, Pimchanok, Gellert, Paul, Lippke, Sonia, Schwarzer, Ralf·2012·Journal of Behavioral Medicine

Abstract

Fruit and vegetable consumption represents a nutritional goal to prevent obesity and chronic illness. To change dietary behaviors, people must be motivated to do so, and they must translate their motivation into actual behavior. The present experiment aims at the psychological mechanisms that support such changes, with a particular focus on dietary self-efficacy and planning skills. A randomized controlled trial compared a theory-based psychological intervention with a health education session in 114 participants. Dependent variables were fruit and vegetable consumption, intention to consume more fruit and vegetables, planning to consume more, and dietary self-efficacy, assessed before the intervention, 1 week afterwards, and at 6-week follow up. Significant group by time interactions for all four dependent variables documented superior treatment effects for the psychological intervention group, with substantially higher scores at posttest and follow-up for the experimental group, although all students benefited from participation. To identify the contribution of the main intervention ingredients (self-efficacy and planning), regression analyses yielded mediator effects for these two factors. A social-cognitive intervention to improve fruit and vegetable consumption was superior to a knowledge-based education session. Self-efficacy and planning seem to play a major role in the mechanisms that facilitate dietary changes.

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Crossref · 10.1007/s10865-011-9373-1

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Authors
Kreausukon, P., Gellert, P., Lippke, S., & Schwarzer, R.
Affiliations
  • Chiang Mai University (TH)
  • Freie Universität Berlin (DE)
  • Constructor University (DE)
  • Uniwersytet SWPS (PL)
Corresponding author
Schwarzer, Ralf
Venue
Journal of Behavioral Medicine
Published
2011-08-07
Volume
35
Issue
4
Pages
443-451
ISSN
  • 0160-7715 (ISSN-L)
  • 1573-3521
OpenAlex
W2047901431
Cited by
107
References
40
Citations by year
2026: 4 · 2025: 6 · 2024: 3 · 2023: 4 · 2022: 5 · 2021: 4 · 2020: 5 · 2019: 6 · 2018: 11 · 2017: 14 · 2016: 11 · 2015: 13 · 2014: 7 · 2013: 7 · 2012: 7
FWCI
9.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Behavioral Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Research Bank (Australian Catholic University) (submittedVersion)
  • Newcastle University ePrints (Newcastle Univesity)
Topics
  • Social Sciences › Psychology › Applied Psychology › Behavioral Health and Interventions
  • Health Sciences › Nursing › Nutrition and Dietetics › Nutrition, Health and Food Behavior
  • Social Sciences › Arts and Humanities › Literature and Literary Theory › Media Influence and Health
Keywords
fruit and vegetable intake, dietary self-efficacy, planning skills, social-cognitive intervention, health education, dietary behavior change, university students
MeSH terms
Adolescent, Adult, Cognition, Diet, Female, Fruit, Humans, Interpersonal Relations, Male, Motivation, Vegetables, Health Behavior, Self Efficacy, Young Adult

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