Results 211 to 220 of about 81,417 (263)
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American Journal of Physical Medicine & Rehabilitation, 2007
The weightless environment of space imposes specific physiologic adaptations on healthy astronauts. On return to Earth, these adaptations manifest as physical impairments that necessitate a period of rehabilitation. Physiologic changes result from unloading in microgravity and highly correlate with those seen in relatively immobile terrestrial patient ...
Michael W C, Payne +2 more
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The weightless environment of space imposes specific physiologic adaptations on healthy astronauts. On return to Earth, these adaptations manifest as physical impairments that necessitate a period of rehabilitation. Physiologic changes result from unloading in microgravity and highly correlate with those seen in relatively immobile terrestrial patient ...
Michael W C, Payne +2 more
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Anemia and Erythropoietin in Space Flights
Seminars in Nephrology, 2005Since the very early manned missions in space, a state of anemia associated with reduced erythropoietin levels and reduced plasma volume was disclosed. The reduction in red blood cell mass is driven by a process of selective hemolysis, which has been named neocytolysis. This phenomenon also occurs in people living at a high altitude who descend rapidly
DE SANTO NG +9 more
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Neuro-Ophthalmology of Space Flight
Journal of Neuro-Ophthalmology, 2016To describe the history, clinical findings, and possible pathogenic etiologies of the constellation of neuro-ophthalmic findings discovered in astronauts after long-duration space flight and to discuss the terrestrial implications of such findings.Retrospective review of published observational, longitudinal examination of neuro-ophthalmic findings in ...
Andrew G, Lee +5 more
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Erythropoietic effects of space flight
Acta Astronautica, 1979Various factors which are important in the regulation of erythropoiesis have been studied in dehydrated mice in the belief that some information would be gained relevant to the erythropoietic effects of space flight. Dehydration reduced the plasma volume and, because changes in red cell volume were minimal, the hematocrit was elevated.
C D, Dunn, R D, Lange
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Cardiovascular function in space flight
Acta Astronautica, 1991Changes in orthostatic heart rate have been noted universally in Soviet and U.S. crewmembers post space flight. The magnitude of these changes appears to be influenced by mission duration, with increasing orthostatic intolerance for the first 7-10 days of flight and then a partial recovery in the orthostatic heart rate response.
A E, Nicogossian +4 more
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Space Flight and Neurovestibular Adaptation
The Journal of Clinical Pharmacology, 1994Space flight represents a form of sensory stimulus rearrangement requiring modification of established terrestrial response patterns through central reinterpretation. Evidence of sensory reinterpretation is manifested as postflight modifications of eye/head coordination, locomotor patterns, postural control strategies, and illusory perceptions of self ...
M F, Reschke +3 more
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The effects of space flight on immunocompetence
Immunology Today, 1987The National Aeronautics and Space Administration (NASA) conducts a research program in the biological and medical aspects of space flight and funds research proposals submitted by interested scientists. Changes that could influence immune status and possibly impair host resistance to infections have been noted and are summarized in a report prepared ...
W R, Beisel, J M, Talbot
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The Biomedical Challenges of Space Flight
Annual Review of Medicine, 2003Space medicine has evolved considerably through past U.S. missions. It has been proven that humans can live and work in space for long durations and that humans are integral to mission success. The space medicine program of the National Aeronautics and Space Administration (NASA) looks toward future long-duration missions.
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2010
Space exploration has fascinated us since the launch of the first primitive rockets more than 3,000 years ago, and it continues to fascinate us today. The data gathered from such exploration has been hugely instrumental in furthering our understanding of our universe and our world.
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Space exploration has fascinated us since the launch of the first primitive rockets more than 3,000 years ago, and it continues to fascinate us today. The data gathered from such exploration has been hugely instrumental in furthering our understanding of our universe and our world.
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The endocrine system in space flight
Acta Astronautica, 1988Hormones are important effectors of the body's response to microgravity in the areas of fluid and electrolyte metabolism, erythropoiesis, and calcium metabolism. For many years antidiuretic hormone, cortisol and aldosterone have been considered the hormones most important for regulation of body fluid volume and blood levels of electrolytes, but they ...
C S, Leach, P C, Johnson, N M, Cintrón
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