Effects of prior physical exertion on tolerance to hypoxia, orthostatic stress, and physical fatigue.

Lategola, Michael T.; Lyne, Peggy J.; Burr, Mary J.; Civil Aeromedical Institute

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Effects of prior physical exertion on tolerance to hypoxia, orthostatic stress, and physical fatigue.

1982-03-01
By Lategola, Michael T. ; Lyne, Peggy J. ; Burr, Mary J.

[PDF-543.85 KB]

English

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Creators:

Lategola, Michael T. ; Lyne, Peggy J. ; Burr, Mary J.

Lategola, Michael T. ; Lyne, Peggy J. ; Burr, Mary J. Less -
Corporate Creators:

Civil Aeromedical Institute
Corporate Contributors:

United States. Office of Aviation Medicine
Subject/TRT Terms:

[+]

Air Pilots Altitude Altitudes Cardiopulmonary System Cardiovascular System Cerebral Anoxia Experiments Fatigue Fatigue (Physiological Condition) Human Subject Testing Hypoxia Motor Ability--Testing Motor Skills Physical Fitness Physical Fitness--Testing Physiological Aspects Respiratory System Stress (Physiology) Tolerance (Physiology)
Publication/ Report Number:

FAA-AM-82-4 ; DOT/FAA/AM-82/4

FAA-AM-82-4 ; DOT/FAA/AM-82/4 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

Ten healthy men, 20-35 years old, were tested for tolerance to hypoxia, orthostatic stress, and physical fatigue after a period of rest, and, on another occasion, after a period of physical exertion. Exertion consisted of four 10-min periods of pedal ergometry; each period consisted of a 30-watt (W) load imposed for 2 min, 60 W for 4 min, and 100 W for 4 min. Testing included a 100-min exposure to an oxygen/nitrogen gas mixture equivalent to 3658 m of altitude, 2 min of lower body negative pressure (LBNP) at -40 torr differential pressure, and 6 min of 50 W pedal ergometry. Psychomotor testing was conducted during hypoxic exposure.

Although some statistically significant (p or = 0.05) physiological decrements were associated with prior physical exertion, psychomotor performance and mentation were not significantly affected. In this study, prior physical exertion produced no adverse effects on physiological tolerances, mentation, or psychomotor performance.
Format:

PDF
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

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urn:sha256:a674bf26b265a68de7ddb46d4b1deb0699a682f50de71bfa940f80c1d5562fa2
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https://rosap.ntl.bts.gov/view/dot/21205/dot_21205_DS1.pdf
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Effects of prior physical exertion on tolerance to hypoxia, orthostatic stress, and physical fatigue.

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