Trial reportThe Journal of school health2019
US Centers for Disease Control and Prevention-Based Physical Activity Recommendations Do Not Improve Fitness in Real-World Settings.
Trial report in The Journal of school health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 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
9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 10 citations in OpenAlex.
- Features of effective staff training programmes within school-based interventions targeting student activity behaviour: a systematic review and meta-analysis.The international journal of behavioral nutrition and physical activity · 2022Pooled it
- School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6 to 18.The Cochrane database of systematic reviews · 2021Pooled it
- Impact of School-Based Physical Activity Intervention on Obesity and Physical Parameters in Children: A Systematic Review.Children (Basel, Switzerland) · 2025Review
- Physical Activity Interventions During the School Day: Reviewing Policies, Practices, and Benefits.The Journal of school health · 2023Review
- Article
- Physical Activity and Nutritional Influence on Immune Function: An Important Strategy to Improve Immunity and Health Status.Frontiers in physiology · 2021Review
- Attending After-School Physical Activity Club 2 Days a Week Attenuated an Increase in Percentage Body Fat and a Decrease in Fitness Among Adolescent Girls at Risk for Obesity.American journal of health promotion : AJHP · 2020Article
- Physical fitness disparities among New York City public school youth using standardized methods, 2006-2017.PloS one · 2020Article
- CDC childhood physical activity strategies fail to show sustained fitness impact in middle school children.Preventive medicine reports · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundThe US Centers for Disease Control and Prevention (CDC) promotes school-based strategies to increase physical activity (PA). Implementation feasibility and effect of these interventions on cardiovascular fitness (CVF) is unknown.
methodsForty-nine low-SES schools were randomly assigned to either (1) continue routine PA programs (N = 24 schools, 2399 students) or (2) implement 4 CDC-based PA strategies (N = 25 schools, 2495 students). CVF assessed by PACER (Progressive Aerobic Cardiovascular Endurance Run) was obtained at the beginning and end of the school year. A post-study questionnaire was administered at each school to assess adherence.
resultsOverall, PACER z-scores were not augmented by CDC-based PA strategies. In boys, PACER z-scores increased similarly in both intervention and control schools. In girls, increased mean PACER z-score was greater in control schools (p < .01). Fifty-two percent of intervention school's staff reported inability to implement or sustain 4 CDC-based PA strategies.
conclusionsPlanned implementation of school-based CDC PA strategies did not increase CVF compared to routine PA programming. Lack of efficacy in girls suggests need for sex-specific targeted strategies. These findings highlight limited efficacy of CDC-based PA recommendations alone in low-SES schools. Schools may require additional support to successfully implement recommendations and meaningfully affect health outcomes.
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What OpenQuestion holds
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.