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Author (down) Peixoto, C.A.T.; da Silva, A.G.T.; Carskadon, M.A.; Louzada, F.M. url  doi
openurl 
  Title Adolescents living in homes without electric lighting have earlier sleep times Type Journal Article
  Year 2009 Publication Behavioral Sleep Medicine Abbreviated Journal Behav Sleep Med  
  Volume 7 Issue 2 Pages 73-80  
  Keywords Human Health; Sleep  
  Abstract The aim of this project was to compare circadian rhythmicity of a group of 37 adolescents (14 girls), aged 11 to 16 (mean age = 13.1 +/- 1.7 years), with and without electricity at home. Twenty students attended morning school (07:30-11:30), and 17 attended evening school classes (19:00-22:30). Eleven adolescents had no electric lighting at home (5 attended morning classes and 6 attended evening classes). They completed a sleep log and wore a wrist actigraph for 5 consecutive days. Saliva samples were collected to assess DLMO. Data were compared by ANOVA and showed later timing and a more extended sleep period for those who attended late classes. Those adolescents without electricity at home had significantly earlier sleep onset on school days. As to DLMO, a trend to a delay was observed in the groups who had electric lighting.  
  Address Department of Physiology, Universidade Federal do Parana, Brazil. pedatardelli@yahoo.com.br  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1540-2002 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:19330580 Approved no  
  Call Number LoNNe @ kyba @ Serial 1481  
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