Effects of the thermal environment in bedrooms on sleep considering the change in clothing insulation

Risa Inoue, Yuka Takeuchi, Yuichi Akiyama, Mika Saito, Junichi Asaka, Riho Matsuzaki, Masayuki Ogata, Kazuyo Tsuzuki, Shin Ichi Tanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the thermal manikin experiments, the clothing insulation values (IT) for different combinations of parameters (clothing, material of quilt, quilt usage pattern, and postures) were measured. Subsequently, a formula for estimating IT was formulated. Furthermore, body movements were observed and the thermal environment in bedrooms were measured in a field survey. By applying the IT to the field survey result, the comprehensive thermal environment during sleep was evaluated. Additionally, sleep stages were determined from the subjects' electroencephalogram, electromyogram, and eye movement. The relationship between thermal environment and sleep quality was evaluated. Result: Evaluation of the sleeping thermal environment with adequate accuracy was possible considering clothing change. Wake per unit time was short for SET * of about 30 oC, so it is possible that a higher sensible temperature is preferred during sleep.

Original languageEnglish
Title of host publication15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713826514
Publication statusPublished - 2018
Event15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018 - Philadelphia, United States
Duration: 2018 Jul 222018 Jul 27

Publication series

Name15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018

Conference

Conference15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
CountryUnited States
CityPhiladelphia
Period18/7/2218/7/27

Keywords

  • Body movement
  • Electroencephalogram
  • Field Survey
  • Sleeping posture
  • Thermal manikin

ASJC Scopus subject areas

  • Pollution

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