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There are a total of 14 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Heat stress and a countermeasure in the Shuttle rescueman's suit
Author(s): Doerr, D. F.; Reed, H.; Convertino, V. A.
Abstract: Rescue of the astronaut flight crew from a contingency landing may risk exposure of the rescue crew to toxic propellants spilling from potentially ruptured tanks in the crew module area. An Aquala dry diver's suit has been ...
NASA Center: Kennedy Space Center
Publication Year: 1992
Added to NTRS: 2008-06-02
Accession Number: 95N16746; Document ID: 19950010331
Restoration of plasma volume after 16 days of head-down tilt induced by a single bout of maximal exercise
Author(s): Convertino, V. A.; Engelke, K. A.; Ludwig, D. A.; Doerr, D. F.
Abstract: Seven healthy men performed maximal exercise 24 h before the end of 16 days exposure to 6 degrees head-down tilt (HDT) to test the hypothesis that such an exercise technique could restore plasma volume (PV) at the end of a ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040173308
Development of an advanced rocket propellant handler's suit
Author(s): Doerr, D. F.
Abstract: Most launch vehicles and satellites in the US inventory rely upon the use of hypergolic rocket propellants, many of which are toxic to humans. These fuels and oxidizers, such as hydrazine and nitrogen tetroxide have ...
NASA Center: Kennedy Space Center
Publication Year: 2001
Added to NTRS: 2006-08-02
Document ID: 20040088695
A single bout of exhaustive exercise affects integrated baroreflex function after 16 days of head-down tilt
Author(s): Engelke, K. A.; Doerr, D. F.; Convertino, V. A.
Abstract: We tested the hypothesis that one bout of maximal exercise performed 24 h before reambulation from 16 days of 6 degrees head-down tilt (HDT) could increase integrated baroreflex sensitivity. Isolated carotid-cardiac and ...
NASA Center: NASA (non Center Specific)
Publication Year: 1995
Added to NTRS: 2006-08-02
Document ID: 20050000154
Application of acute maximal exercise to protect orthostatic tolerance after simulated microgravity
Author(s): Engelke, K. A.; Doerr, D. F.; Crandall, C. G.; Convertino, V. A.
Abstract: We tested the hypothesis that one bout of maximal exercise performed at the conclusion of prolonged simulated microgravity would improve blood pressure stability during an orthostatic challenge. Heart rate (HR), mean ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040173130
Altered baroreflex control of forearm vascular resistance during simulated microgravity
Author(s): Convertino, V. A.; Doerr, D. F.; Vernikos, J.
Abstract: Reflex peripheral vasoconstriction induced by activation of cardiopulmonary baroreceptors in response to reduced central venous pressure (CVP) is a basic mechanism for elevating systemic vascular resistance and defending ...
NASA Center: NASA (non Center Specific)
Publication Year: 1994
Added to NTRS: 2006-08-02
Document ID: 20040089964
A Newly Developed EMS Unit: Some Preliminary Results Demonstrating its Efficacy
Author(s): Duvoisin, M. R.; Reed, H. E.; Doerr, D. F.; Dudley, G. A.; Buchanan, P.
Abstract: An electromyostimulation (EMS) unit that provides a range of stimulation variables was developed and used in a preliminary study of the current-torque relationship during percutaneous EMS. The knee extensors of one lower ...
NASA Center: Kennedy Space Center
Publication Year: 1986
Added to NTRS: 2005-08-25
Accession Number: 97N71674; Document ID: 19970017580; Report Number: NAS 1.26:204380, NASA-CR-204380
Characteristics of the Carotid Baroreflex in Man during normal and flow-restricted exercise
Author(s): Eiken, O.; Convertino, V. A.; Doerr, D. F.; Dudley, G. A.; Morariu, G.; Mekjavic, I. B.
Abstract: Eight subjects were studied in the supine position at rest, during normal dynamic leg exercise (control exercise) and with blood-flow restriction in the working legs (flow-restricted exercise). Graded muscle blood-flow ...
NASA Center: Kennedy Space Center
Publication Year: 1992
Added to NTRS: 2005-08-25
Accession Number: 97N71003; Document ID: 19970012765; Report Number: NAS 1.15:112281, NASA-TM-112281
Carotid baroreflex response following 30 days exposure to simulated microgravity
Author(s): Convertino, V. A.; Doerr, D. F.; Eckberg, D. L.; Fritsch, J. M.; Vernikos-Danellis, J.
Abstract: The mechanism of the carotid-baroreflex response to weightlessness was investigated in human subjects exposed to simulated microgravity (30 days of 6-day head-down bed rest followed by 5 days of recovery). ...
NASA Center: Ames Research Center, Kennedy Space Center
Publication Year: 1989
Added to NTRS: 2004-11-03
Accession Number: 90A15502; Document ID: 19900028447
Enhanced carotid-cardiac baroreflex response and elimination of orthostatic hypotension 24 hours after acute exercise in paraplegics
Author(s): Engelke, K. A.; Shea, J. D.; Doerr, D. F.; Convertino, V. A.
Abstract: To test the hypothesis that an acute bout of maximal exercise can ameliorate orthostatic hypotension consequent to prolonged wheelchair confinement, we evaluated heart rate (HR), systolic (SBP) and diastolic (DBP) blood ...
NASA Center: Kennedy Space Center
Publication Year: 1992
Added to NTRS: 2004-11-03
Accession Number: 93A32781; Document ID: 19930048784
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