TY - CONF
T1 - Field studies on the effect of the indoor thermal environment on sleep in summer and winter
AU - Ohashi, Chika
AU - Ikaga, Toshiharu
AU - Ando, Shintaro
AU - Umishio, Wataru
AU - Takayama, Naoto
AU - Yanagisawa, Megumi
N1 - Funding Information:
This study was supervised by the people and officials of Yusuhara Town officials. We thank Ms. Mai Urata for her cooperation in analysis. This study was supported in part by the Japan Science and Technology Agency project “Housing and Healthy Aging” (Principal Researcher: Prof. Toshiharu Ikaga), and by a Grant-in-Aid for Scientific Research (A) (No. 23246102; Principal Investigator: Prof. Toshiharu Ikaga).
PY - 2015
Y1 - 2015
N2 - Sleep problems can have profound economic and health effects. Recently, the effect of the indoor thermal environment on sleep has attracted attention. However, the relationship between the indoor thermal environment and sleep, by season, has not been fully studied. Accordingly, the purpose of this study was to elucidate the effect of the indoor thermal environment on sleep in both summer and winter. Field studies comprising actual measurements and questionnaire surveys were conducted during summer 2013 and winter 2014. Statistical analysis of the data yielded the following main results. First, sleep efficiency, defined as the ratio of total sleep time to total time in bed, was highest at a bedroom temperature of 27.6 °C in summer and 13.0 °C in winter. Second, after controlling for personal attributes, sleep efficiency decreased by 3.2% per 1 °C increase in bedroom temperature over 27.6 °C in summer, and by 0.3% per 1 °C below 13.0 °C in winter.
AB - Sleep problems can have profound economic and health effects. Recently, the effect of the indoor thermal environment on sleep has attracted attention. However, the relationship between the indoor thermal environment and sleep, by season, has not been fully studied. Accordingly, the purpose of this study was to elucidate the effect of the indoor thermal environment on sleep in both summer and winter. Field studies comprising actual measurements and questionnaire surveys were conducted during summer 2013 and winter 2014. Statistical analysis of the data yielded the following main results. First, sleep efficiency, defined as the ratio of total sleep time to total time in bed, was highest at a bedroom temperature of 27.6 °C in summer and 13.0 °C in winter. Second, after controlling for personal attributes, sleep efficiency decreased by 3.2% per 1 °C increase in bedroom temperature over 27.6 °C in summer, and by 0.3% per 1 °C below 13.0 °C in winter.
KW - Field study
KW - Indoor thermal environment
KW - Sleep
KW - Thermal insulation performance
UR - http://www.scopus.com/inward/record.url?scp=85052405762&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052405762&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85052405762
T2 - Healthy Buildings Europe 2015, HB 2015
Y2 - 18 May 2015 through 20 May 2015
ER -