아침형–저녁형에서 수면 각성 양상 및 야간 수면 변인에 관한 연구
Sleep Wake Patterns and Nocturnal Sleep Parameters in the Morning and Evening Types
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초록
아침형-저녁형에서 수면의 질과 주간 졸음, 액티그래피로측정된 수면 변인은 차이를 보이지 않았다. 수면 습관은 휴일의 기상 시각만이 저녁형이 아침형보다 늦은 것으로 나타났고, 저녁형에서 휴일 총 수면 시간이 아침형보다 많았다. 수면 일지와 액티그래피를 근거로 한 취침 시각, 기상 시각,실제 잠든 시각과 잠에서 깬 시각은 저녁형이 아침형보다늦은 경향을 보였다.
Abstract
Objectives The aim of our study was to compare sleep wake patterns and nocturnal sleep parameters between the morning type (MT) and evening type (ET). Methods The Morningness-Eveningness Questionnaire, Pittsburgh Sleep Quality Index (PSQI), and Korean version of the Epworth Sleepiness Scale (KESS) were administered to subjects recruited among visitors to the Chuncheon National Museum from 2010 to 2011. Actigraphy data (Actiwatch-2, Philips-Respironics Co.) were collected from eight MT (Age 38.0±3.8, M : F=2 : 6), 12 neither type (NT) (Age 34.2±5.1, M : F=2 : 10), and nine ET (Age 30.3±6.8, M : F=2 : 7) subjects. Results Scores for PSQI and KESS did not differ significantly among the MT, NT, and ET groups. No differences in time in bed, total sleep time, sleep efficiency, wake after sleep onset, sleep latency, and fragmentation index were observed among the three groups. In the ET group, the mean wake time on free days was significantly later, and the mean sleep duration on free days was significantly longer, compared with those of the MT group (p<0.01). Conclusion No differences in sleep quality, daytime sleepiness, and nocturnal sleep parameters were observed among the MT, NT, and ET groups. Compared to MT subjects, ET subjects showed later wake time and longer sleep duration on free days.
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