Results 261 to 270 of about 5,374,393 (318)

[Mechanism of cardiac atrophy under weightlessness/simulated weightlessness].

Sheng li xue bao : [Acta physiologica Sinica], 2017
Cardiac remodeling is the heart's response to external or internal stimuli. Weightlessness/simulated weightlessness leads to cardiac atrophy and heart function declining. Understanding the mechanism of cardiac atrophy under weightlessness is important to help astronaut recover from unloading-induced cardiovascular changes after spaceflight.
Guo-Hui, Zhong, Shu-Kuan, Ling, Ying-Xian, Li   +2 more
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[Thermoregulation under simulated weightlessness].

Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 1998
The effect of simulated weightlessness on thermoregulation was studied in 5 subjects. The experiment consisted of 3d baseline measurements, 7d head-down bed rest and 2d recovery. Circadian rhythm was assessed by continuous measurements of rectal temperature and skin temperature with 2h intervals.
M, Qiu, W, Liu, G, Liu, J, Wen, G, Liu, S, Chang   +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, 2002
Weightlessness 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, Shi-zhong, Jiang, Xian-yun, Shen   +2 more
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[Changes of cerebral circulation during weightlessness or simulated weightlessness].

Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002
The results about studies on changes of the cerebral circulation during weightlessness/simulated weightlessness were reviewed in this paper. The possible influencing mechanism of weightlessness on cerebral circulation and its physiological significance were summarized.
D W, Wu, X Y, Shen
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[Metabolic changes in simulated weightlessness].

Anesteziologiia i reanimatologiia, 1990
8 healthy subjects participated in 2 series of experiments on the comparative studies of two techniques of respiratory therapy employing multicomponent anesthesia during controlled lung ventilation in normal conditions and in experimental weightlessness.
L L, Stazhadze, V E, Vorob'ev, A S, Razin, V F, Ivchenko   +3 more
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Study of Temperature Homeostasis in Real and Simulated Weightlessness

Human Physiology, 2002
The analysis of the temperature (T) reaction of the body of healthy humans was carried out using the results of investigations with the thermometry technique under antiorthostatic hypokinesia (ANOH) (38 males in the studies of 14- to 49-day duration, eight females, 120 days), isolation in a regenerated gas environment (six males, 90 to 135 days), suit ...
N G, Lakota, I M, Larina
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[Changes of learning and memory function under weightlessness or simulated weightlessness].

Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002
The work efficiency of astronauts has an intimate connection with the brain function state during space flight. The research results of the learning and memory mechanism of the brain in recent years were introduced. The effects of weightlessness or simulated weightlessness on brain's learning, memory, focused attention and many other higher neural ...
D W, Wu, X Y, Shen
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Plasma viscosity elevations with simulated weightlessness.

Aviation, space, and environmental medicine, 1986
Bed rest studies which simulate weightlessness have demonstrated marked changes in the state of hydration of subjects as well as decrements in aerobic capacity. These two phenomena may be linked through increases in blood viscosity which is altered by a loss of free water and which, in turn, influences blood flow needed for aerobic muscular work.
D G, Martin, V A, Convertino, D, Goldwater, E W, Ferguson, E B, Schoomaker   +4 more
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Simulated weightlessness: effects of bioenergetic balance.

Aviation, space, and environmental medicine, 1980
As a prelude to a flight experiment, an attempt was made to separate energy requirements associated with gravity from all other metabolic needs. The biological effects of weightlessness were simulated by suspending animals in a harness so that antigravity muscles were not supporting the body.
J P, Jordan, H A, Sykes, J C, Crownover, C L, Schatte, J B, Simmons, D P, Jordan   +5 more
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THU0423 Immobilization Simulating Weightlessness Affects Immunological Parameters

Annals of the Rheumatic Diseases, 2013
Background Exercise has a wide variety of beneficial health effects. It stimulates bone formation and maintains bone strength as well as decreases the risk of falls. Moreover, exercise at regular intervals is also assumed to positively affect immune functions. Conversely, in more than 50% of the astronauts during/after space flight and under simulated
P. Hoff, D.L. Belavý, D. Huscher, M. Hahne, A.K. Kuhlmey, P. Maschmeyer, G. Armbrecht, R. Fitzner, F.H. Perschel, T. Gaber, G.R. Burmester, R.H. Straub, D. Felsenberg, F. Buttgereit   +13 more
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