Abstract
Objective
The aim of the current study was to examine the joint effect of self-efficacy, action
planning, and received social support on fruit and vegetable intake.
Design
The study used a longitudinal design with 3 waves of data collection.
Setting
Major university campus in Beijing, China.
Participants
Young adults (n = 286).
Variables Measured
Age, gender, body mass index, dietary self-efficacy, and baseline behavior were measured
at time 1. Two weeks after time 1, received social support and action planning were
assessed (time 2); 4 weeks after time 1, subsequent fruit and vegetable consumption
was measured (time 3).
Analysis
In a path analysis, action planning at time 2 was specified as a mediator between
self-efficacy at time 1 and fruit and vegetable intake at time 3, controlling for
age, gender, body mass index, and baseline behavior. In addition, in a conditional
process analysis, received social support at time 2 was specified as a moderator of
the self-efficacy–planning relationship.
Results
Action planning mediated between self-efficacy and subsequent dietary behavior, and
received social support moderated between self-efficacy and planning supporting a
compensation effect. Action planning served as a proximal predictor of fruit and vegetable
intake, and planning one's consumption was facilitated by dietary self-efficacy.
Conclusions and Implications
Through the identification of social cognitive factors influencing dietary planning,
interventions can target self-efficacy and received social support to test the efficacy
of these mechanisms in increasing individuals' ability to ensure they consume adequate
amounts of fruits and vegetables.
Key Words
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Article info
Publication history
Published online: October 22, 2016
Accepted:
September 11,
2016
Footnotes
Conflict of Interest Disclosures: The authors' conflict of interest disclosures can be found online with this article on www.jneb.org.
Identification
Copyright
©2016 Society for Nutrition Education and Behavior. Published by Elsevier, Inc. All rights reserved.
