EFFECTS OF SUMMER BEDROOM THERMAL ENVIRONMENT ON SLEEP IN OLDER ADULTS A longitudinal field survey in daily life

Abstract

This study aimed to evaluate the bedroom thermal environment of older adults and to clarify the effects of the thermal environment on sleep using a longitudinal field survey. More than 90% of bedroom temperatures were higher than the recommended standard bedroom temperature for older people (23-27 °C). However, most participants rated their bedroom environment as cool and comfortable. A high bedroom temperature, above 29 °C, decreased sleep quality, subjective sleep evaluation, and extended time in bed. Adjusting to an appropriate bedroom thermal environment is important for maintaining sleep quality and preventing excessive sleep duration.