Prolonged exposure to microgravity is known to invoke physiological changes which predispose individuals to orthostatic intolerance upon readaptation to the earth's gravitational field. Attenuated baroreflex responsiveness has been implicated in contributing to this inability to withstand orthostatic stress. To test this hypothesis, eight individuals were exposed to 15 days of simulated microgravity exposure using the 6° head-down bed rest model. Prior to, and after the simulated microgravity exposure, the following were assessed: a) aortic baroreflex function; b) carotid baroreflex function; c) cardiopulmonary baroreflex function; and d) the degree of interaction between the cardiopulmonary and carotid baroreflexes.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc278142 |
| Date | 08 1900 |
| Creators | Crandall, Craig G. (Craig Gerald) |
| Contributors | Raven, Peter Bernard, 1940-, Schwark, Harris, Gwirtz, Patricia A., Barron, Barbara A., Downey, H. Fred |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | xii, 142 leaves : ill., Text |
| Rights | Public, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved., Crandall, Craig G. (Craig Gerald) |
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