title: A longitudinal examination of speed of reaction and speed of movement in young boys 7 to 13 years.
mesh_terms: D000293:Adolescent; D000365:Age Determination by Skeleton; D000367:Age Factors; D001835:Body Weight; D002648:Child; D006801:Humans; D008297:Male; D008722:Methods; D009068:Movement; D010101:Oxygen Consumption; D011930:Reaction Time; D012959:Socioeconomic Factors