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Effect of antigravity suit inflation on cardiovascular, PRA, and PVP responses in humansThe effects of lower body and abdominal pressure, produced by antigravity suit inflation, on blood pressure, pulse rate, fluid and electrolyte shift, plasma vasopressin and plasma renin activity in humans in upright postures were studied. Five men and two women stood upright for 3 hr with the suit being either inflated or uninflated. In the control tests, the suit was inflated only during the latter part of the trials. Monitoring was carried out with a sphygnomanometer, with sensors for pulse rates, and using a photometer and osmometer to measure blood serum characteristics. The tests confirmed earlier findings that the anti-g suit eliminates increases in plasma renin activity. Also, the headward redistribution of blood obtained in the tests commends the anti-g suit as an alternative to water immersion or bed rest for initial weightlessness studies.
Document ID
19870024386
Document Type
Reprint (Version printed in journal)
Authors
Kravik, S. E. (NASA Ames Research Center Moffett Field, CA, United States)
Keil, L. C. (NASA Ames Research Center Moffett Field, CA, United States)
Geelen, G. (NASA Ames Research Center Moffett Field, CA, United States)
Wade, C. E. (NASA Ames Research Center Moffett Field, CA, United States)
Barnes, P. R. (NASA Ames Research Center Moffett Field; U.S. Army, Letterman Army Medical Center, San Francisco, CA, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1986
Publication Information
Publication: Journal of Applied Physiology
Volume: 61
ISSN: 0161-7567
Subject Category
AEROSPACE MEDICINE
Distribution Limits
Public
Copyright
Other