ArticleHealthcare (Basel, Switzerland)2021
Long-Term Dietary and Physical Activity Interventions in the School Setting and Their Effects on BMI in Children Aged 6-12 Years: Meta-Analysis of Randomized Controlled Clinical Trials.
Article in Healthcare (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 18 citations in OpenAlex.
- An Umbrella Review of Systematic Reviews of School-Based Nutrition Interventions to Determine Outcomes Used and Their Measurement Tools.Nutrition reviews · 2026Pooled it
- Umbrella review of systematic reviews to inform the development and translation of community-based childhood obesity prevention interventions.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025Pooled it
- Nutrition Interventions for Pediatric Obesity Prevention: An Umbrella Review of Systematic Reviews.Nutrients · 2023Pooled it
- Effects of nutritional intervention strategies in the primary prevention of overweight and obesity in school settings: systematic review and network meta-analysis.BMJ medicine · 2022Pooled it
- Combined nutrition and physical activity education for early adolescents with malnutrition: A systematic review of overweight interventions and the undernutrition evidence gap.PLOS global public health · 2026Article
- Randomised controlled interventions on physical activity, diet or their dual approach to better public health and the links to body mass index in 10-19 years: a systematic review and meta-analysis.BMJ public health · 2025Article
- The Impact of Increased Physical Activity at School on the Nutritional Behavior and BMI of 13-Year-Olds.Nutrients · 2024Article
- Impact of a nationwide school policy on body mass index in Danish school children: An interrupted time series analysis.Public health in practice (Oxford, England) · 2024Article
- Identifying barriers and facilitators to increase fibre intakes in UK primary school children and exploring the acceptability of intervention components: a UK qualitative study.Public health nutrition · 2024Article
- Article
- Review
- Infant effortful control predicts BMI trajectories from infancy to adolescence.Pediatric obesity · 2023Article
- A Community-Based, Participatory, Multi-Component Intervention Increased Sales of Healthy Foods in Local Supermarkets-The Health and Local Community Project (SoL).International journal of environmental research and public health · 2023Article
- Review
- Sex-Specific Associations Between Early-Life Unpredictability and Trajectories of Body Mass Index From Infancy to Adolescence.Biopsychosocial science and medicineArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Preventive actions and potential obesity interventions for children are mainly researched throughout the school period, either as part of the school curricula or after regular school hours, via interventions mostly lasting less than 12 months. We aimed to perform a meta-analysis on randomized controlled clinical trials to evaluate the evidence of the efficacy of long-term school-based interventions in the management of childhood obesity in terms of BMI from a dietary and physical activity-based approach. Eleven randomized controlled clinical trials were examined using the random effects model, and the results showed that there were no significant effects associated with physical activity + nutrition intervention in school children aged 6-12 years, with a pooled standardized mean difference (SMD) (95% CI) of -0.00 (-0.05, 0.04). No effects were observed after subgroup analysis based on the intervention length. The findings from our study indicate that long-term school-based interventions on physical activity and dietary habits received by children aged 6-12 years seem to have no effect on BMI. However, the promotion of such interventions should not be discouraged, as they promote additional positive health outcomes for other domains of children's health.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.