Impact of a one-year school-based teacher-implemented nutrition and physical activity intervention: main findings and future recommendations

Carla Habib-Mourad, Lilian A Ghandour, Carla Maliha, Nancy Awada, Michèle Dagher, Nahla Hwalla, Carla Habib-Mourad, Lilian A Ghandour, Carla Maliha, Nancy Awada, Michèle Dagher, Nahla Hwalla

Abstract

Background: The aim of the current study is to describe the effectiveness of a school-based intervention when delivered by a non-nutrition specialist (trained schoolteachers) as compared to an expert in nutrition.

Methods: Two trials of the same school-based intervention using the same intervention package were delivered, one by nutritionists and another by trained schoolteachers. The intervention focused mainly on dietary behaviours, as well as physical activity. In both trials, purposively selected schools were randomized to intervention or control groups; students (aged 9-11 years) in both groups were compared at post-test on knowledge and self-efficacy scores, as well as dietary and physical activity behaviours, controlling for their baseline status on the various measures. All analyses accounted for clustering at the school level.

Results: In both trials, a statistically significantly greater improvement was observed for both the knowledge and self-efficacy scores in intervention vs. school students. When the programme was delivered by trained schoolteachers, frequency of breakfast intake was increased, crisps consumption was reduced, but no change in fruit and vegetable consumption was observed (latter increased when delivered by nutrition professionals only). Physical activity did not improve in both trials.

Conclusion: Trained schoolteachers can have a positive impact on students' dietary behaviours with the appropriate training to ensure they are equipped with the right information, skills, and resources to deliver the programme with the highest fidelity.

Trial registration: ClinicalTrial.gov Identifier: NCT03040271. Retrospectively registered on 2 February 2017.

Keywords: Lebanon; Obesity; Overweight; School nutrition; School policy; School-based intervention; Schoolchildren; Sustainability.

Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Fig. 1
Fig. 1
Flow diagram of schools and students’ selection in both interventions

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