title: [Sleep, diurnal periodicity of physiologic functions, and human work capacity during the 1st day following a phase shift in the sleep--wakefulness cycle].
abstract: Physiological reactions of 35 male test subjects, aged 25-42, were examined during the first day after a 3 to 11 hour work-rest cycle shift within 24 hours. The shift induced noticeable changes in sleep dynamics. Shifts close to inversion (9- and 11-hour) were accompanied by disturbances in the diurnal rhythm of heart rate and may cause deterioration of mental productivity. Negative effects of such time schedules need to be taken into consideration, when developing work-rest regimens for representatives of different occupations.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D004526:Efficiency; D004569:Electroencephalography; D006339:Heart Rate; D006801:Humans; D008297:Male; D008606:Mental Processes / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D012894:Sleep Stages / Q000502:physiology; D014938:Work Capacity Evaluation
vernacular_title: Osobennosti sna, sutochnoĭ periodiki fiziologicheskikh funktsiĭ i rabotosposobnosti cheloveka v 1-e sutki posle sdviga fazy ritma sna--bodrstvovaniia.