Geir K Resaland, Vegard Fusche Moe, Eivind Aadland, Jostein Steene-Johannessen, Øyvind Glosvik, John R Andersen, Olav M Kvalheim, Heather A McKay, Sigmund A Anderssen
Active Smarter Kids (ASK): Rationale and design of a cluster-randomized controlled trial investigating the effects of daily physical activity on children's academic performance and risk factors for non-communicable diseases
BMC public health
study aimed explore association coronavirus disease covid19 pandemic overweight incidence among preadolescent elementary school children japan populationbased longitudinal study conducted adachi city tokyo japan using data adachi child health impact living difficulty achild study control group 20162018 comprised 434 children covid19 exposure group 20182020 included 3500 children overweight defined body mass index bmi zscore 1 sd according world health organization standards study design involved comparing bmi zscores exposure pandemic considering associated lifestyle changes potential consequences physical activity parental employment status income 6th grade prevalence overweight increased 177 192 control group 225 295 covid19 exposure group differenceindifferences analysis revealed childrens exposure covid19 significantly increased bmi zscores coefficient 022 95 confidence interval ci 014029 higher odds ratio overweight odds ratio 251 95 ci 112562 even adjusting timevarying covariates covid19 pandemic associated increased prevalence overweight among elementary school children japan