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Respiratory responses to intermittent and prolonged exercise in a hot-dry environment.

Authors
Pandolf-KB; Kamon-E
Source
Life Sci 1974 Jan; 14(1):187-198
NIOSHTIC No.
00036332
Abstract
Ventilatory gas exchange ratio, ventilation, respiration rate, rectal temperature, heart rate, and oxygen uptake are determined for four acclimated subjects performing intermittent and prolonged exercise on a treadmill at 24 and 54 degrees centigrade. Respiration rate, heart rate, rectal temperature, and respiratory dead space are increased at the higher temperature. Ventilatory gas exchange ratio is higher in the initial cycles with lower values at the hot ambient condition, suggesting that heat is more effective than time in lowering the ventilatory gas exchange ratio, probably with greater dependence on fat oxidation in the latter exercise cycles which seemed to be more pronounced in the heat.
Keywords
NIOSH-Publication; NIOSH-Grant; Physiological-effects; Respiratory-mechanics; High-temperature; Environmental-factors; Work-loads; Physical-exercise; Metabolism
Contact
Occupational Health Univ of Pittsburgh Sch of PH 130 DE Soto Street Pittsburgh, PA 15213
CODEN
LIFSAK
Publication Date
19740101
Document Type
Journal Article
Funding Amount
152509
Funding Type
Grant
Fiscal Year
1974
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00308
Issue of Publication
1
ISSN
0024-3205
Source Name
Life Sciences
State
PA
Performing Organization
University of Pittsburgh, Pittsburgh, Pennsylvania
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