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The Thermal Insulation of Human Body under Water Immersion (2) Takeshi Mitsui 1 1Department of Internal Medicine, School of Medicine Keio University pp.281-287
Published Date 1970/3/15
DOI https://doi.org/10.11477/mf.1404202133
  • Abstract
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Six healthy male adults were first immersed in the warm water-bath, in which the tem-perature was kept at approximately 42℃, to elevate the subjects' rectal temperature up to 40℃. Following this procedure the subjects were transferred to the other temperature-regulated water-bath to expose the subjects to water of 28℃.

The measurements were conducted with re-gard to the subjects' rectal temperature and skin temperature, the ventilation and the oxygen consumption. The thermal insulation, the heat debt and the thermal circulation index were calculated to discuss the body heat exchange and the peripheral blood flow.

Increased ventilation and oxygen consump-tion started to decrease when the subjectswere exposed to the cold water. The thermal insulation was increased gradually in 35~45 minutes to reach its maximum value.

During the cold water immersion the venti-lation and the oxygen consumption again increased.

The obese subjects and the thin subjects revealed different response to the cold water immersion. There was also any significant individual difference of the response.


Copyright © 1970, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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