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Validation of a dual-cycle ergometer for exercise during 100 percent oxygen prebreathingA study has been designed to determine if exercise, while prebreathing 100 percent oxygen prior to decompression, can reduce the current resting-prebreathe time requirements for extravehicular activity and high altitude reconnaissance flight. For that study, a suitable exercise mode was required. Design considerations included space limitations, cost, pressure suit compatibility, ease and maintenance of calibration, accuracy of work output, and assurance that no significant mechanical advantage or disadvantage would be introduced into the system. In addition, the exercise device must enhance denitrogenation by incorporation of both upper and lower body musculature at high levels of oxygen consumption. The purpose of this paper is to describe the specially constructed, dual-cycle ergometer developed for simultaneous arm and leg exercise during prebreathing, and to compare maximal oxygen uptake obtained on the device to that obtained during leg-only cycle ergometry and treadmill testing. Results demonstrate the suitability of the dual-cycle ergometer as an appropriate tool for exercise research during 100 percent oxygen prebreathing.
Document ID
19920052837
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wiegman, Janet F.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Ohlhausen, John H.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Webb, James T.
(Krug Life Sciences, Inc. San Antonio, TX, United States)
Pilmanis, Andrew A.
(USAF, Armstrong Aerospace Medical Research Laboratory, Brooks AFB TX, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Man/System Technology And Life Support
Meeting Information
Meeting: Annual SAFE Symposium
Location: Las Vegas, NV
Country: United States
Start Date: November 11, 1991
End Date: November 13, 1991
Accession Number
92A35461
Funding Number(s)
CONTRACT_GRANT: NASA ORDER T-82170
CONTRACT_GRANT: F33615-89-C-0603
Distribution Limits
Public
Copyright
Other

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