The Role of Social Support and Self-efficacy for Planning Fruit and Vegetable Intake

Guangyu Zhou , Yiqun Gan , Kyra Hamilton , Ralf Schwarzer


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.
Author Guangyu Zhou
Guangyu Zhou,,
, Yiqun Gan
Yiqun Gan,,
, Kyra Hamilton
Kyra Hamilton,,
, Ralf Schwarzer (Filia we Wrocławiu / II Wydział Psychologii we Wrocławiu)
Ralf Schwarzer,,
- II Wydział Psychologii we Wrocławiu
Journal seriesJournal of Nutrition Education and Behavior, [Journal of Nutrition Education], ISSN 1499-4046, (A 30 pkt)
Issue year2017
Publication size in sheets0.5
Keywords in Englishdietary self-efficacy, action planning, received social support, fruit and vegetable intake
ASJC Classification2739 Public Health, Environmental and Occupational Health; 2916 Nutrition and Dietetics; 2701 Medicine (miscellaneous)
Languageen angielski
Schwarzer The Role of Social Support and Self-efficacy for Planning Fruit and Vegetable Intake.pdf 603.02 KB
Additional file
Oświadczenie_publ_Schwarzer_DIGsigned.pdf 275.57 KB
Score (nominal)30
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.114; WoS Impact Factor: 2017 = 2.571 (2) - 2017=3.249 (5)
Citation count*36 (2021-02-25)
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