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Impact of a Nutrition-Related Community Intervention on the Quantity and Quality of Children's School almuerzo.

ABSTRACT: Foods and beverages that schoolchildren carry in their lunchboxes have high energy values but lack plain water, fresh fruits and vegetables. A nutrition-related community intervention on the quantity and quality of school almuerzo was performed, in which four primary schools participated, as part of two groups: 225 children in the intervention group (IG) and 177 children in the control group (CG). The parents from the IG had access to a website where they could consult information on eating habits and physical activity or school almuerzo menus. They were sent weekly text messages on their mobile phones and attended in-person sessions. Anthropometric measurements and surveys were performed in both groups at the start of the study, as well as after 6 and 12 months. The school almuerzo was assessed by recording foods that the children brought in their lunchboxes. At baseline, 88% of children brought a school almuerzo, 37% fruit, 17% vegetables, 40% plain water and 50% sweet drinks. In both groups, 50% of children brought a school almuerzo with an energy value above the recommended value (>340 kcal) during follow-up; however, the percentage of children who brought sweet drinks decreased (p < 0.05), with sweet drinks contributing between 26% and 33% of the calories in the school almuerzo. In the IG, the quantity in milliliters of plain water increased at the end of the follow-up period (p = 0.044). From the point of view of food-and-beverage quantity and quality, school almuerzo were unhealthy for both groups. The intervention failed to increase the frequency with which parents provided children with school almuerzo or enhance the quality of the latter.

SUBMITTER: Vilchis-Gil J

PROVIDER: S-EPMC8003566 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundApproximately a quarter of Australian children are classified as overweight or obese. In high-income countries, childhood obesity follows a socio-economic gradient, with greater prevalence amongst the most socio-economically disadvantaged children. Community-based interventions (CBI), particularly those using a systems approach, have been shown to be effective on weight and weight-related behaviours. They are also thought to have an equitable impacts, however there is limited evidence of their effectiveness in achieving this goal.MethodsSecondary analysis was conducted on data collected from primary school children (aged 6-13 years) residing in ten communities (five intervention, five control) involved in the Whole of Systems Trial of Prevention Strategies for Childhood Obesity (WHO STOPS) cluster randomised trial in Victoria, Australia. Outcomes included Body Mass Index z-score (BMI-z) derived from measured height and weight, self-reported physical activity and dietary behaviours and health related quality of life (HRQoL). Repeat cross-sectional data from 2015 (n = 1790) and 2019 (n = 2137) were analysed, stratified by high or low socio-economic position (SEP). Multilevel linear models and generalised estimating equations were fitted to assess whether SEP modified the intervention effect on the outcomes.ResultsThere were no overall changes in BMI-z for either SEP strata. For behavioural outcomes, the intervention resulted in a 22.5% (95% CI 5.1, 39.9) point greater improvement in high-SEP compared to low-SEP intervention schools for meeting physical activity guidelines. There were also positive dietary intervention effects for high SEP students, reducing takeaway and packaged snack consumption, although there was no significant difference in effect between high and low SEP students. There were positive intervention effects for HRQoL, whereby scores declined in control communities with no change in intervention communities, and this did not differ by SEP.ConclusionThe WHO STOPS intervention had differential effects on several weight-related behaviours according to SEP, including physical activity. Similar impacts on HRQoL outcomes were found between high and low SEP groups. Importantly, the trial evaluation was not powered to detect subgroup differences. Future evaluations of CBIs should be designed with an equity lens, to understand if and how these types of interventions can benefit all community members, regardless of their social and economic resources.

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Impact of a Nutrition-Related Community Intervention on the Quantity and Quality of Children's School almuerzo.

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