Japanese Journal of Physiological Anthropology
Online ISSN : 2432-0986
Print ISSN : 1342-3215
EVALUATION ON THERMAL ENVIRONMENTS BASED ON CIRCADIAN RHYTHM DURING SLEEP IN SUMMER
Naoshi KAKITSUBAYoh KAWASHIMA
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2010 Volume 15 Issue 3 Pages 57-63

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Abstract

The effect of dynamic control of ambient temperature (T_a) and relative humidity on sleep quality during nocturnal sleep in summer was evaluated from psychological and physiological responses. Four healthy male subjects volunteered for the experiments in August 2007-2008. By comparing with the constant 28℃/60% condition, six dynamically controlled thermal conditions were tested. The EEG, body core temperature (T_<cr>) and subjective evaluation on sleep were recorded. The results demonstrated that a gradual increase of T_a from 26℃ at the beginning of sleep to 28℃ until awaking may be the best for ensuring sleep quality as well as circadian rhythm of T_<cr>.

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© 2010 Japan Society of Physiological Anthropology
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