THE EFFECT OF A YEAR IN THE ANTARCTIC ON HUMAN THERMAL AND METABOLIC RESPONSES TO AN ACUTE STANDARDIZED COLD STRESS

The metabolic rate and thermal responses of eight healthy subjects exposed nude for 2 hours to a standard cold stress (17 + or - 1.0 C air temperature) were examined in the fall, winter, and spring at Little America V in the ntarctic. Mean body, average skin and foot temperatures increased significa...

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Bibliographic Details
Main Authors: MILAN,FREDERICK A., ELSNER,ROBERT W., RODAHL,KAARE
Other Authors: ARCTIC AEROMEDICAL LAB FORT WAINWRIGHT ALASKA
Format: Text
Language:English
Published: 1961
Subjects:
*BODY TEMPERATURE
*EXPOSURE(PHYSIOLOGY)
*GEOPHYSICS
*METABOLISM
*STRESS(PHYSIOLOGY)
HUMANS
MEASUREMENT
MOTOR REACTIONS
PHYSIOLOGY
POLAR REGIONS
Antarctic
Little America
Little America V
The Antarctic
Antarc*
Online Access:http://www.dtic.mil/docs/citations/AD0260670
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0260670
Description
Summary:The metabolic rate and thermal responses of eight healthy subjects exposed nude for 2 hours to a standard cold stress (17 + or - 1.0 C air temperature) were examined in the fall, winter, and spring at Little America V in the ntarctic. Mean body, average skin and foot temperatures increased significantly (P less than 0.05) over the year. Neither rectal nor finger temperatures were altered. There was a decrease (P less than 0.05) in heat production to meet the same thermal demands after 3 months in the Antarctic. Basal metabolic rates were unchanged. Obvious shivering observed in all subjects in the fall was almost absent in the winter and spring. It is suggested that these changes represent physiological adaptation to low ambient temperatures. (Author)

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