Results 181 to 190 of about 1,205 (217)
Some of the next articles are maybe not open access.
Contributory factors to orthostatic intolerance after simulated weightlessness
Clinical Physiology, 1999Various factors may contribute to orthostatic intolerance (OI) observed after space flights or simulated weightlessness such as bed rest experiments: individual physical and physiological factors (arterial blood pressure (BP), height), physiological changes induced by real or simulated weightlessness (hypovolaemia, increase in venous distensibility ...
A, Pavy-Le Traon +4 more
openaire +2 more sources
[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
openaire +1 more source
Effects of Simulated Weightlessness on Bone Mineral Metabolism
Endocrinology, 1984Space flight and bedrest result in a negative calcium balance and osteopenia. The mechanisms underlying these events are not well understood. In particular, it is not clear whether systemic or local factors are preeminent in mediating the effects of gravity on bone mineral content.
R K, Globus, D D, Bikle, E, Morey-Holton
openaire +2 more sources
Human Autonomic Responses to Actual and Simulated Weightlessness
The Journal of Clinical Pharmacology, 1991Orthostatic dysfunction occurs after exposure to microgravity, and is not completely understood. The authors developed a device for stimulating carotid baroreceptors to test the hypothesis that exposure to microgravity leads to impairment of arterial baroreflex mechanisms.
D L, Eckberg, J M, Fritsch
openaire +2 more sources
[Mechanism of cardiac atrophy under weightlessness/simulated weightlessness].
Sheng li xue bao : [Acta physiologica Sinica], 2017Cardiac 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 +2 more
openaire +1 more source
[Thermoregulation under simulated weightlessness].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 1998The 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 +5 more
openaire +1 more source
1986
The phenomenon of gravitation is characterized by the mutual attraction of any two bodies. The universal character of gravitation was first recognized by Isaac Newton who found the well-known law for the attraction force F acting between two mass points or homogeneous spherical bodies $$\rm F\, = \,\gamma Mm/R^2 $$ (3.1) M, m are the masses ...
openaire +1 more source
The phenomenon of gravitation is characterized by the mutual attraction of any two bodies. The universal character of gravitation was first recognized by Isaac Newton who found the well-known law for the attraction force F acting between two mass points or homogeneous spherical bodies $$\rm F\, = \,\gamma Mm/R^2 $$ (3.1) M, m are the masses ...
openaire +1 more source
[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
openaire +1 more source
[Changes of cerebral circulation during weightlessness or simulated weightlessness].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002The 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
openaire +1 more source
[Metabolic changes in simulated weightlessness].
Anesteziologiia i reanimatologiia, 19908 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 +3 more
openaire +1 more source