[Hygienic importance of organizing the extracurricular time of 1st-grade students on a long school day].
D002490:Central Nervous System / Q000502:physiology; D002648:Child; D006304:Health Status; D006801:Humans; D007899:Leisure Activities; D009031:Moscow; D009043:Motor Activity / Q000502:physiology; D012146:Rest; D013997:Time Factors; D014938:Work Capacity Evaluation
Gigienicheskoe znachenie organizatsii vneuchebnogo vremeni uchashchikhsia 1-kh klassov v gruppe prodlennogo dnia.