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Orthostatic tests after a 4‐day confinement or simulated weightlessness
Clinical Physiology, 1997Besides microgravity, inactivity is likely to play a role in the cardiovascular deconditioning after space flights and weightlessness simulations. The aim of the study was to compare the effects of a 4‐day head‐down bed rest (HDBR) (−68) and a 4‐day confinement (C) on cardiovascular responses to orthostatic stress. Eight male subjects underwent head‐up
Antonio Güell +6 more
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Postural reactions of circulation and its regulation during simulated weightlessness
Acta Astronautica, 1994The extention and intensification of space exploration the influence of weightlessness on human organism and the formation of a new level of adaptation. The studies of blood circulation is very important because of frequent occurrence of cardiovascular disorders in the middle age subjects.
V.A. Gornago +3 more
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[Weightlessness or weightlessness simulation and vascular remodeling].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2003Weightlessness is inavoidable during spaceflight. It brings profound physiological effects on human body. Vascular remodeling is one of the important changes of cardiovascular system caused by weightlessness or simulated weightlessness. The paper summarized the studies on the effects of weightlessness or weightlessness simulation on vascular remodeling
Yong, Yue +3 more
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Brain Norepinephrine Changes With Simulated Weightlessness and Relation to Exercise Training
Physiology & Behavior, 1999Maintenance of nervous system function during periods of a deconditioning syndrome is important to prevent diminished psychological/behavioral, and physiological function observed during periods of bed rest, physical inactivity, and weightlessness. A main neurotransmitter is norepinephrine (NE), and its regulation yields insight into nervous system ...
Gary M. Kastello, Mark S. Sothmann
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Changes in vitamin a status following prolonged immobilization (simulated weightlessness)
Life Sciences, 1992A study was conducted to investigate the effects of a simulated weightlessness induced by chronic immobilization on vitamin A status. To simulate the stress condition of weightlessness, rats were suspended for 10 days in a special jacket to which metal chains were attached. Animals received a commercial stock diet.
Toshinao Goda +3 more
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A SURVEY OF CHRONIC WEIGHTLESSNESS SIMULATION IN BIOLOGICAL RESEARCH [PDF]
, 1964 Abstract : The central emphasis of the survey concerns the status of research involving various methods of effecting chronic weightlessness for organisms. Three general types of approach are considered: (1) accelerations that oppose the Earth's gravity, (2) indirect reduction of gravitational effects, and (3) indirect information from increases of ...
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AN UPPER ARM MODEL FOR SIMULATING WEIGHTLESSNESS
Medicine & Science in Sports & Exercise, 1999W. J. Fink +5 more
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[Changes of leg compliance during weightlessness or simulated weightlessness].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002Weightlessness or simulated weightlessness causes increase of leg compliance. It leads to more blood pooling in the legs and less blood returning to the heart during orthostatic test, which may partly explain the occurrence of orthostatic intolerance induced by weightlessness or simulated weightlessness.
Wen-bin, Liang +2 more
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[The effect of weightlessness and simulated weightlessness on the expression of genes].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2003The research results of the relationship between gene expression and weightlessness or simulated weightlessness were studied. The influence of weight on the expression of genes in central nervous system were summarized in three aspects. It can be concluded that the expression of genes in central nervous system were precisely regulated by weight. It was
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