skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Reduction in metabolic heat production during exposure to radio-frequency radiation in the rat

Abstract

The purpose of this study was to assess the ability of the rat to reduce metabolic rate when exposed to deep-penetrating radio-frequency (RF) radiation. Male Sprague-Dawley rats were maintained at an ambient temperature (Ta) of 10 degrees C and exposed to 600-MHz radiation while metabolic rate (MR) was measured by indirect calorimetry. RF radiation exposures were made in a waveguide-type system that permitted the continuous control of specific absorption rate (SAR). SAR's of 2-5 W/kg led to significant reductions in MR when averaged from 30 to 60 min after the initiation of RF radiation exposure. The total decrease in MR during RF radiation exposure accounted for approximately 37% of the total RF heat load. Exposure of another group of rats to the same SAR's at a Ta of 10 degrees C resulted in a significant elevation in colonic temperature. Thus, despite the decrease in MR, heat gain still exceeded heat loss during RF radiation exposure, with a resultant elevation in deep body temperature. In conclusion, in a cold environment the rat exposed to RF radiation decreases its MR. However, the response time and efficiency of the response is not adequate to prevent an increase in body temperature.

Authors:
Publication Date:
Research Org.:
Environmental Protection Agency, Research Triangle Park, NC
OSTI Identifier:
6320790
Resource Type:
Journal Article
Journal Name:
J. Appl. Physiol.; (United States)
Additional Journal Information:
Journal Volume: 62:5
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; RADIOWAVE RADIATION; BIOLOGICAL EFFECTS; RATS; METABOLISM; ABSORPTION; BODY TEMPERATURE; ANIMALS; ELECTROMAGNETIC RADIATION; MAMMALS; RADIATIONS; RODENTS; VERTEBRATES; 560400* - Other Environmental Pollutant Effects

Citation Formats

Gordon, C J. Reduction in metabolic heat production during exposure to radio-frequency radiation in the rat. United States: N. p., 1987. Web.
Gordon, C J. Reduction in metabolic heat production during exposure to radio-frequency radiation in the rat. United States.
Gordon, C J. Fri . "Reduction in metabolic heat production during exposure to radio-frequency radiation in the rat". United States.
@article{osti_6320790,
title = {Reduction in metabolic heat production during exposure to radio-frequency radiation in the rat},
author = {Gordon, C J},
abstractNote = {The purpose of this study was to assess the ability of the rat to reduce metabolic rate when exposed to deep-penetrating radio-frequency (RF) radiation. Male Sprague-Dawley rats were maintained at an ambient temperature (Ta) of 10 degrees C and exposed to 600-MHz radiation while metabolic rate (MR) was measured by indirect calorimetry. RF radiation exposures were made in a waveguide-type system that permitted the continuous control of specific absorption rate (SAR). SAR's of 2-5 W/kg led to significant reductions in MR when averaged from 30 to 60 min after the initiation of RF radiation exposure. The total decrease in MR during RF radiation exposure accounted for approximately 37% of the total RF heat load. Exposure of another group of rats to the same SAR's at a Ta of 10 degrees C resulted in a significant elevation in colonic temperature. Thus, despite the decrease in MR, heat gain still exceeded heat loss during RF radiation exposure, with a resultant elevation in deep body temperature. In conclusion, in a cold environment the rat exposed to RF radiation decreases its MR. However, the response time and efficiency of the response is not adequate to prevent an increase in body temperature.},
doi = {},
journal = {J. Appl. Physiol.; (United States)},
number = ,
volume = 62:5,
place = {United States},
year = {1987},
month = {5}
}