A cluster randomised controlled trial of an intervention based on the Health Action Process Approach for increasing fruit and vegetable consumption in Iranian adolescentsShow others and affiliations
2017 (English)In: Psychology and Health, ISSN 0887-0446, E-ISSN 1476-8321, Vol. 32, no 12, p. 1449-1468Article in journal (Refereed) Published
Abstract [en]
OBJECTIVE: To evaluate an intervention programme based on the Health Action Process Approach and designed to increase the intake of fruit and vegetables (F&V) among Iranian adolescents aged 13 to 18.
DESIGN: A randomised controlled trial with three arms examined the short- (1 month) and long-term (6 months) effects of the intervention. There were two intervention groups (one included adolescents only [A group; n = 510]; the second included mothers and adolescents [M + A group; n = 462]) and a control group (n = 483). All participants were recruited from schools.
MAIN OUTCOME MEASURES: Social cognitions, self-regulatory processes and F&V intake.
RESULTS: The intervention led to an increase in F&V intake for adolescents in the short and long terms. Adolescents in the M + A group increased their F& V intake more than adolescents in the A group. Outcome expectancies, self-monitoring, intentions, action and coping planning, perceived social support and behavioural automaticity mediated the effect of the intervention on F&V intake.
CONCLUSION: The theory-based intervention led to an increase in F&V intake and promoted more positive social cognitions and self-regulatory processes among Iranian adolescents. The findings also provide evidence that involving mothers in an intervention can confer additional benefit.
Place, publisher, year, edition, pages
Taylor & Francis, 2017. Vol. 32, no 12, p. 1449-1468
Keywords [en]
adolescent; behaviour; fruit and vegetable; intervention; randomised-controlled trial
National Category
Psychology Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:hj:diva-37198DOI: 10.1080/08870446.2017.1341516ISI: 000416697500002PubMedID: 28681612Scopus ID: 2-s2.0-85021926022Local ID: HHJövrigtISOAI: oai:DiVA.org:hj-37198DiVA, id: diva2:1139122
2017-09-062017-09-062017-12-28Bibliographically approved