title: [Various reactions of the human body during 7 days of anti-orthostatic hypokinesia].
abstract: Time-course variations in the cardiovascular parameters, vestibulo-autonomic stability, work capacity and nutritional status were measured in 20 male test subjects, aged 19-22, who were exposed for 7 days to head-down tilt (-10 degrees). Beginning with days 3 or 4, new hemodynamic ratios developed that indicated a new level of circulation regulation and adaptation to head-down tilt. It appears that blood redistribution towards the head led to an enhanced vestibulo-autonomic stability. Renal excretion of nitrogen increased, reaching the highest level on days 6-7. The investigations allow the conclusion that 7-day head-down tilt may cause changes in almost every physiological system.
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D001341:Autonomic Nervous System / Q000502:physiology; D002320:Cardiovascular Physiological Phenomena; D004032:Diet; D006801:Humans; D008297:Male; D008954:Models, Biological; D009068:Movement; D009747:Nutritional Physiological Phenomena; D011187:Posture; D014722:Vestibule, Labyrinth / Q000502:physiology; D014893:Weightlessness
vernacular_title: Nekotorye reaktsii organizma cheloveka v usloviiakh semisutochnoĭ antiortostaticheskoĭ gipokinezii.