title: Genetic and environmental influences on the strength and motor performance of Philadelphia school children.
mesh_terms: D044383:Black People; D001835:Body Weight; D002648:Child; D005191:Family Characteristics; D005260:Female; D005824:Genetics, Behavioral; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D010807:Physical Endurance; D012931:Social Environment; D044465:White People