Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway.
Centre for Sleep Medicine, Haukeland University Hospital, Bergen, Norway.
J Sleep Res. 2021 Aug;30(4):e13263. doi: 10.1111/jsr.13263. Epub 2020 Dec 21.
The aim of the present study was to describe sleep patterns in a large and representative sample of Norwegian adolescents. The sample included 4,010 first-year high school students, aged 16-17 years (54% female), who completed a web-based survey on sleep patterns. The process of going to sleep was addressed as a two-step sequence of (a) shuteye latency (interval from bedtime to shuteye time) and (b) sleep onset latency (interval from shuteye time to sleep onset). Results showed that 84.8% of the adolescents failed to obtain the recommended amount of sleep (8+ h) on schooldays, and 49.4% obtained less than 7 h. Mean bedtime on schooldays was 10:33 PM, with rise time 8:19 h later (time in bed). The adolescents reported long school-day shuteye latency (43 min), limiting sleep opportunity to 7:36 h. Sleep onset latency was 32 min and mean school-day sleep duration was only 6:43 h. On free days, 26.3% of the adolescents obtained less than 8 h of sleep, and 11.7% obtained less than 7 h. Mean bedtime was 00:33 AM, time in bed was 10:35 h, shuteye latency was 39 min and sleep onset latency was 24 min. Mean free-day sleep duration was 8:38 h. There were sex differences in several sleep parameters, including shuteye latency. The results indicate that the majority of Norwegian adolescents fail to obtain the recommended amount of sleep (8+ h) on schooldays. Long shuteye latency appears to be a main driver for short school-day sleep duration in adolescents.
本研究旨在描述挪威青少年中大量代表性样本的睡眠模式。该样本包括 4010 名年龄在 16-17 岁的一年级高中生（54%为女性），他们完成了一项关于睡眠模式的网络调查。入睡过程被分为两个步骤序列：（a）睡眠时间（从就寝时间到入睡时间的间隔）和（b）入睡潜伏期（从入睡时间到入睡开始的间隔）。结果表明，84.8%的青少年在上学日未能获得推荐的睡眠时间（8+小时），49.4%的青少年睡眠时间少于 7 小时。上学日的平均就寝时间为晚上 10:33，起床时间为 8:19 小时后（在床上的时间）。青少年报告说，上学日的睡眠时间较长（43 分钟），限制了他们的睡眠时间为 7:36 小时。入睡潜伏期为 32 分钟，平均上学日睡眠时间仅为 6:43 小时。在休息日，26.3%的青少年睡眠时间少于 8 小时，11.7%的青少年睡眠时间少于 7 小时。平均就寝时间为凌晨 00:33，在床上的时间为 10:35 小时，睡眠时间为 39 分钟，入睡潜伏期为 24 分钟。平均休息日睡眠时间为 8:38 小时。在几个睡眠参数中存在性别差异，包括睡眠时间。结果表明，大多数挪威青少年在上学日未能获得推荐的睡眠时间（8+小时）。较长的睡眠时间似乎是青少年在上学日睡眠时间短的主要原因。
