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Effect of water immersion on cardiopulmonary physiology at high gravity (+Gz)The cardiopulmonary responses of eight male subject between 21-31 years exposed to 1, 2, and 3 Gz during immersion at 35 + or - 0.5 C to heart level and during control dry rides are studied. Ventilation, O2 consumption, the end-tidal pressure of CO2, heart frequency, cardiac output, functional residual capacity, and the arterial pressure of CO2 were measured. It is observed that as Gz increases ventilation, heart frequency, and O2 consumption increase, and the end-tidal and arterial pressures of CO2 decrease during dry rides, but are not altered during immersion. It is detected that the functional residual capacity is lower during immersion and decreases in both the dry and immersed state as Gz increases, and cardiac output decreases as Gz increases in dry rides. It is noted that changes produced by acceleration in a Gz direction are due to the effect on the systemic circulation rather than to the effect on the lungs.
Document ID
19870036869
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Arieli, R.
(Technion - Israel Inst. of Tech. Haifa, Israel)
Boutellier, U.
(Technion - Israel Inst. of Tech. Haifa, Israel)
Farhi, L. E.
(Technion-Israel Institute of Technology, Haifa; New York, State University Buffalo, United States)
Date Acquired
August 13, 2013
Publication Date
November 1, 1986
Publication Information
Publication: Journal of Applied Physiology
Volume: 61
ISSN: 0161-7567
Subject Category
Aerospace Medicine
Accession Number
87A24143
Funding Number(s)
CONTRACT_GRANT: NAS9-16042
Distribution Limits
Public
Copyright
Other

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