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The problem
Intervention: Comparison of natural variations in physical activity and fitness during school months versus summer months; study identifies need for targeted summer interventions but does not test a specific intervention
Who it was tested with: 18 children aged 10-14 years old (67%), 55% male, all diagnosed with dyslexia, 17% classified as overweight or obese.
Experience from people who deliver programmes: stories, case studies and lessons learned. Valuable for understanding how and why, and for spotting what to test next, but not a measure of effect.
"At three timepoints (May, August, December 2025), children's height, weight, and fitness were measured via a portable stadiometer, dual-frequency foot-to-foot bioelectric impedance device, and Progressive Aerobic Cardiovascular Endurance Run (PACER). For 14 consecutive days during summer (June 2025) and school (October 2025) months, participants wore an ActiGraph activity monitor on their non-dominant wrist to capture light, moderate, and vigorous PA." The within-subject design with measurements at multiple timepoints and activity monitoring provides observational evidence of seasonal differences in fitness outcomes, though without intervention testing or comparison groups.
This is a preliminary study with small sample size (n=18) and no control or comparison group. The study does not test an intervention but rather documents natural variation. Causality cannot be established regarding what specific factors during summer versus school drive fitness differences.
Across countries and designs
1 study · 1 country
