NDLI: Effect of change in ambient temperature on core temperature during the daytime

Content Provider	Springer Nature Link
Author	Kakitsuba, Naoshi White, Matthew D.
Copyright Year	2013
Abstract	In this study, the hypothesis is tested that continuous increases in ambient temperature (Ta) during daytime would give elevated core and skin temperatures, and consequently better thermal sensation and comfort. Rectal temperature (Tre), skin temperatures and regional dry heat losses at 7 sites were continuously measured for 10 Japanese male subjects in three thermal conditions: cond. 1, stepwise increases in Ta from 26 °C at 9 h00 to 30 °C at 18 h00; cond. 2, steady Ta at 28 °C from 9 h00 to 18 h00 and cond. 3, stepwise decreases in Ta from 30 °C at 9 h00 to 26 °C at 18 h00. Oxygen consumption was measured and thermal sensation and comfort votes were monitored at 15 min intervals. Body weight loss was measured at 1 h intervals. While Tre increased continuously in the morning period in any condition, it increased to a significantly greater (p < 0.05) 36.9 ± 0.3 °C at 18 h00 in cond. 1 relative to 36.7 ± 0.28 °C in Cond. 2 and 36.5 ± 0.37 °C in cond. 3. Better thermal comfort was observed in the afternoon and the evening in Cond.1 as compared with the other 2 conditions. Thus, a progressive and appropriate increase in Ta may induce optimal cycle in core temperature during daytime, particularly for a resting person.
Starting Page	901
Ending Page	907
Page Count	7
File Format	PDF
ISSN	00207128
Journal	International Journal of Biometeorology
Volume Number	58
Issue Number	5
e-ISSN	14321254
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-05-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Core temperature Skin temperature Thermal comfort Environment Biophysics and Biological Physics Meteorology Animal Physiology Plant Physiology Environmental Health
Content Type	Text
Resource Type	Article
Subject	Ecology Health, Toxicology and Mutagenesis Atmospheric Science

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