The short and long of adolescent sleep: the unique impact of day length |
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Institution: | 1. Norwegian Resource Center for AD/HD, Tourette''s Syndrome and Narcolepsy, Oslo University Hospital, Oslo, Norway;2. Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway;1. Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;2. Department of Lymphoma & Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA |
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Abstract: | Study objectivesVariation in day length is proposed to impact sleep, yet it is unknown whether this is above the influence of behavioural factors. Day length, sleep hygiene, and parent-set bedtime were simultaneously explored, to investigate the relative importance of each on adolescents’ sleep.MethodsAn online survey was distributed in four countries at varying latitudes/longitudes (Australia, The Netherlands, Canada, Norway).ResultsOverall, 711 (242 male; age M = 15.7 ± 1.6, range = 12–19 yrs) adolescents contributed data. Hierarchical regression analyses showed good sleep hygiene was associated with earlier bedtime, shorter sleep latency, and longer sleep (β = ?0.34; ?0.30; 0.32, p < 0.05, respectively). Shorter day length predicted later bedtime (β = 0.11, p = 0.009), decreased sleep latency (β = ?0.21, p < 0.001), and total sleep (β = ?0.14, p = 0.001). Longer day length predicted earlier bedtimes (β = ?0.11, p = 0.004), and longer sleep (β = 0.10, p = 0.011).ConclusionsSleep hygiene had the most clinical relevance for improving sleep, thus should be considered when implementing adolescent sleep interventions, particularly as small negative effects of shorter day length may be minimised through sleep hygiene techniques. |
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Keywords: | Adolescent Day length Parent-set bedtime Sleep Sleep hygiene ASHS-R"} {"#name":"keyword" "$":{"id":"kwrd0040"} "$$":[{"#name":"text" "_":"Adolescent Sleep Hygiene Scale – Revised M"} {"#name":"keyword" "$":{"id":"kwrd0050"} "$$":[{"#name":"text" "_":"mean SD"} {"#name":"keyword" "$":{"id":"kwrd0060"} "$$":[{"#name":"text" "_":"standard deviation SE"} {"#name":"keyword" "$":{"id":"kwrd0070"} "$$":[{"#name":"text" "_":"standard error |
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