In the Building Environment Laboratory at Toyohashi University of Technology’s Department of Architecture and Civil Engineering, researchers study the effects that indoor environments have on the people that live in these spaces. As part of this research, the laboratory conducted an experiment on the nature of sleep in an evacuation shelter environment. This experiment was performed by creating a mock shelter in the university’s gymnasium with four of the emergency blankets currently stocked in the case of emergency, as well as a standard futon set. The quality of sleep with these two arrangements in the gymnasium were compared to that in subjects’ own beds. The results show that the low temperature (5°C) inside the gymnasium affected subjects’ sleep and body temperature regulation, reducing sleep efficiency by 10% and increasing fatigue.
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