TY - JOUR
T1 - The short and long of adolescent sleep: the unique impact of day length
AU - Bartel, Kate
AU - van Maanen, Annette
AU - Cassoff, Jamie
AU - Friborg, Oddgeir
AU - Meijer, Anne Marie
AU - Oort, Frans
AU - Williamson, Paul
AU - Gruber, Reut
AU - Knauper, Barbel
AU - Gradisar, Michael
PY - 2017/10
Y1 - 2017/10
N2 - Study objectives Variation 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. Methods An online survey was distributed in four countries at varying latitudes/longitudes (Australia, The Netherlands, Canada, Norway). Results Overall, 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). Conclusions Sleep 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.
AB - Study objectives Variation 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. Methods An online survey was distributed in four countries at varying latitudes/longitudes (Australia, The Netherlands, Canada, Norway). Results Overall, 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). Conclusions Sleep 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.
KW - Adolescent
KW - Day length
KW - Parent-set bedtime
KW - Sleep
KW - Sleep hygiene
UR - https://doi.org/10.1016/j.sleep.2017.06.018
UR - http://www.scopus.com/inward/record.url?scp=85027511280&partnerID=8YFLogxK
U2 - 10.1016/j.sleep.2017.06.018
DO - 10.1016/j.sleep.2017.06.018
M3 - Article
SN - 1389-9457
VL - 38
SP - 31
EP - 36
JO - Sleep Medicine
JF - Sleep Medicine
ER -