Effects of Bed Pad and Bed Sheet on Sleep Onset Period During Napping Under Mild Humid Heat Exposure.

OKAMOTO-MIZUNO, Kazue; MIZUNO, Koh; MATSUURA, Noriko; MATSUO, Ai; IWATA, Arichika; JOJIMA, Eiichiro; SHIRAKAWA, Shuichiro

Eight healthy male subjects slept from 13:30 to 15:30 under ambient temperature and humidity maintained at 29°C and RH70%, using cotton sheet and polyester bed pad (C) and linen sheet and bed pad (A). A polysomnography, skin temperature, microclimate, bed climate, and subjective sensations were obtained. The number of wakefulness and amount of sleep stage 1 for the C significantly increased compared to those for the A. The bed climate humidity at the waist area for the C was significantly increased than that for the A. The subjective thermal sensation was hotter and sweat sensation showed increased sweating in C compared to the A. These results suggest that material of bed-sheet and bed-pad can affect an increase in the hotter and sweating subjective sensation, number of awakenings, and amount of stage 1 by increasing the bed climate humidity at the waist area.

BLANKETS; NAPPING (Textiles); HUMIDITY; TEMPERATURE effect; COTTON; POLYSOMNOGRAPHY

Journal of the Japan Research Association for Textile End-Uses / Sen'i Seihin Shōhi Kagaku, 2013, Vol 54, Issue 3, p12

0037-2072

Academic Journal