Effects of different types of clothing on circadian rhythms of core temperature and urinary catecholamines

The Japanese Journal of Physiology
S J Park, H Tokura

Abstract

This study investigated the effects of three different types of clothing on the circadian rhythms of core temperature and urinary catecholamines. One type of clothing consisted of long-sleeved shirts, full-length trousers, and socks (Type L, 1,042 g); the second type was of half-sleeved shirts and knee-length trousers (Type H, 747 g); the third type was of Type H during the daytime and Type L during night sleep (Type M). Six healthy females participated in this study where rectal temperature, skin temperatures, heart rate, and urinary catecholamines were continuously measured for 37.5 h at an ambient temperature of 23.8 +/- 0.2 degrees C and a relative humidity of 60 +/- 5%. The results were as follows: (1) The nocturnal minimum of rectal temperature decreased significantly in the sequence Type L < Type M < Type H clothing, and 27.2 and 12.4% of the circadian amplitude were influenced by type of clothing during the daytime and the nighttime, respectively. (2) The rise of skin temperatures in the extremities increased significantly more after the subjects retired for sleep with Type M or Type H clothing than with Type L. (3) Urinary catecholamines decreased more in the evening and increased more in the morning with Type H and Ty...Continue Reading

References

Feb 1, 1979·Biological Psychology·T Akerstedt, J E Fröberg
Jan 1, 1990·International Archives of Occupational and Environmental Health·W S Jeong, H Tokura
Jan 1, 1984·Neuroscience and Biobehavioral Reviews·W FibigerM Datar
Jan 1, 1980·Journal of Psychosomatic Research·U Lundberg, M Frankenhaeuser
Feb 4, 1993·The New England Journal of Medicine·V K SomersF M Abboud

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Citations

Jun 29, 2012·Journal of Physiological Anthropology·Kazue Okamoto-Mizuno, Koh Mizuno
May 1, 1996·Applied Human Science : Journal of Physiological Anthropology·X Li, H Tokura
Mar 3, 1999·Applied Human Science : Journal of Physiological Anthropology·S J Park, H Tokura

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