ArticleBMC public health2015
The role of curriculum dose for the promotion of fruit and vegetable intake among adolescents: results from the Boost intervention.
Article in BMC public health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.
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Who cites it
8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.
- Outcome evaluation of fruits and vegetables distribution interventions in schools: a systematic review and meta-analysis.Public health nutrition · 2021Pooled it
- Measuring implementation fidelity of school-based obesity prevention programmes: a systematic review.The international journal of behavioral nutrition and physical activity · 2018Pooled it
- Guelph Family Health Study: pilot study of a home-based obesity prevention intervention.Canadian journal of public health = Revue canadienne de sante publique · 2018Trial
- Sustaining Heart-Healthy Habits in Youth: A 15-Year Review of the SI! Program.Current cardiology reports · 2026Review
- Perceived influences of fruit and vegetable consumption among Indian adolescents - A qualitative inquiry.BMC public health · 2025Article
- Article
- School Coordinators' Perceptions of Organizational Readiness Is Associated with Implementation Fidelity in a Smoking Prevention Program: Findings from the X:IT II Study.Prevention science : the official journal of the Society for Prevention Research · 2021Article
- Curricular activities and change in determinants of fruit and vegetable intake among adolescents: Results from the Boost intervention.Preventive medicine reports · 2017Article
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundMulti-component interventions combining educational and environmental strategies have proved effective in increasing children and adolescents' fruit and vegetable intake. However such interventions are complex and difficult to implement and several studies report poor implementation. There is a need for knowledge on the role of dose for behaviour change and for assessment of intervention dose to avoid conclusions that intervention components which are not implemented are ineffective. This study aimed to examine 1) the association between dose of a class curriculum and adolescents' fruit and vegetable intake in a school-based multi-component intervention, 2) if gender and socioeconomic position modify this association.
methodsWe carried out secondary analysis of data from intervention schools in the cluster-randomized Boost study targeting 13-year-olds' fruit and vegetable intake. Teacher- and student data on curriculum dose delivered and received were aggregated to the school-level and class-level (only possible for student data). We analysed the association between curriculum dose and students' (n 995) self-reported fruit and vegetable intake (24-h recall questionnaire) after finalization of the intervention using multi-level analyses. Potential moderation was examined by analyses stratified by gender and socioeconomic position.
resultsAverage dose received at class-level was significantly associated with students' fruit and vegetable intake (10 g (CI: 0.06, 20.33) per curricular activity received). In stratified analyses the association remained significant among boys only (14 g (CI: 2.84, 26.76) per curricular activity received). The average dose delivered and received at the school-level was not significantly associated with students' intake.
conclusionsWe found a dose-response relationship between number of curricular activities received and adolescents' fruit and vegetable intake. The results indicate that curriculum dose received only mattered for promotion of fruit and vegetable intake among boys. Future studies should explore this gender difference in larger samples to guide the planning of school-based curricular interventions with regards to the optimal number of curricular activities required to promote behavioural change in subgroups with low fruit and vegetable intake at baseline.
trial registrationCurrent Controlled Trials ISRCTN11666034.
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