title: [Chronologic principles of a healthy life style in schoolchildren].
abstract: The circadian variations of physiological functions (body temperature, heart rate, blood pressure, intelligence, and motor activity) were studied in schoolchildren aged 10-13 years during their studies and leisure. There is a relationship between their health status, social capability, and circadian variations in pupils. Factors maintaining and distorting their circadian variations are identified in the schoolchildren's lifestyle. Based on biochronological criteria, the author provides evidence for the hygienic value of a rational motor activity regime, the observance of age-specific sleep terms, and the balance of dynamic and static components in the educational process of pupils.
authors.forename: N N
authors.initials: NN
authors.lastname: Kuindzhi
mesh_terms: D000222:Adaptation, Physiological; D000293:Adolescent; D000367:Age Factors; D002648:Child; D002657:Child Development / Q000502:physiology*; D002940:Circadian Rhythm; D006304:Health Status; D006801:Humans; D008019:Life Style; D009043:Motor Activity; D010507:Periodicity; D012621:Seasons