| Title |
Evaluation of Thermal Comfort during Sleeping in Summer : Part I. On Results of Questionnaire Before and After Sleep |
| Keywords |
Sleep quality ; 수면 질 ; Body movement ; 신체움직임 ; TSV ; 전신온냉감 ; CSV ; 쾌적감 |
| Abstract |
This study is to investigate effects of thermal conditions on sleep. Five female university students participated in the sleep experiment. Three temperature levels(22, 26, and 30℃) were given, and relative humidity was maintained to 50%. When as subject arrived in the chamber at 9 o'clock in the evening, questionnaire was given to check physical and psychological conditions. After checking conditions, subjects went to bed till 07：30 in the morning. Body movement was checked during sleeping. After sleep in the chamber, questionnaire was given to the subject in order to check sleep quality. Subjects evaluated sleep quality by themselves by answering the time they fall asleep and wake up, frequency of wake during sleep, causes of each waking, and feeling after sleep. Sleep quality was rated with 7-point scale. At 30℃ condition, body movement was significantly higher than of other thermal conditions. The best sleep quality was obtained at the 26℃ condition, while the worst sleep was taken at the 30℃ condition. |