Søvn hos elever i videregående skole

Forskere fra Nasjonal kompetansetjeneste for søvnsykdommer, Haukeland universitetssykehus, Universitetet i Bergen, Folkehelseinstituttet, NTNU og Flinders University har i denne studien undersøkt søvnmønster hos over 4000 elever i første klasse på videregående skole. Elevene svarte på en nettbasert undersøkelse om søvnmønster, hvor forskerne undersøkte (1) tid fra leggetid til lyset ble slukket, og (2) tid fra lyset ble slukket til man sovnet. Resultatene viste at flertallet av norske ungdommer ikke klarer å oppnå anbefalt søvnmengde (8+ timer) på skoledager. Tid fra leggetid til lyset ble slukket ser ut til å være hovedårsaken til kort søvnlengde hos denne gruppen ungdommer.

Sleep in older adolescents. Results from a large cross-sectional, population-based study

Ingvild West Saxvig, Bjørn Bjorvatn, Mari Hysing, Børge Sivertsen, Michael Gradisar, Ståle Pallesen

Studien er publisert i Journal of Sleep Research

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.