title: Longitudinal differences and trends in body fat and running endurance in Hungarian primary schoolboys.
mesh_terms: D000273:Adipose Tissue / Q000502:physiology*; D000886:Anthropometry / Q000379:methods*; D015992:Body Mass Index; D002648:Child; D006801:Humans; D006814:Hungary / Q000453:epidemiology; D008137:Longitudinal Studies; D008297:Male; D010807:Physical Endurance / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology*; D012420:Running / Q000502:physiology*; D013334:Students / Q000706:statistics & numerical data*