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  • 1
    Publication Date: 2011-08-18
    Description: The hypothesis that endogenous levels of certain hormones might be indicative of an individual's susceptibility to stressful motion is tested in a comparison of subjects classified as less prone to motion sickness with those of higher susceptibility. The levels of ACTH and vasopressin measured before exposure to stressful motion were twice as high in the less-suceptible group. No significant differences were noted in the levels of angiotensin, aldosterone, or TSH. The differences between the two groups were greater for a given hormone than for any of the changes induced by exposure to stressful motion.
    Keywords: AEROSPACE MEDICINE
    Type: Physologist, Supplement (ISSN 0031-9376); 26; S-117
    Format: text
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  • 2
    Publication Date: 2019-01-25
    Description: At the Johnson Space Center we are actively involved, with the collaboration of other NASA Centers and the scientific community at large, in the search for ways to counter the negative affects of spaceflight beginning with the improvement in our understanding of the adaptation. Heretofore this search will be broadly referred to as countermeasures development and includes not only the preservation of physiological well-being but also pyschological well-being. The psychological integrity of crews will, undoubtedly, become progressively more important as lengths, remoteness, and risks of missions increase. The character and priorities of our contermeasure development is very much dependent upon the character of the mission and requires a very close liaison between Medical Operations and the investigators. Because of the demands which countermeasure implementation imposes upon crew schedules and because of the potential weight, power, and budget impacts of the hardware and its development, a countermeasure can only become operational when it is either adequately validated or the human risk of not applying the existing technology exceeds the other negative impacts not directly related to crew health and safety.
    Keywords: AEROSPACE MEDICINE
    Type: ; : Composite material
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  • 3
    Publication Date: 2019-08-28
    Description: The concern of NASA's Exercise Countermeasures Project (ECP) is to ensure crew physical effectiveness for flight- or mission-related tasks, and encompasses postflight as well as preflight and inflight exercise components. Attention is given to the implementation of ECP via the Space Shuttle Orbiter's treadmill, rower, cycle ergometer, and lower body negative pressure apparatus.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: SAE PAPER 921140 , SAE, International Conference on Environmental Systems; Jul 13, 1992 - Jul 16, 1992; Seattle, WA; United States|; 8 p.
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