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Author (up) Smith, M.R.; Eastman, C.I. url  doi
openurl 
  Title Shift work: health, performance and safety problems, traditional countermeasures, and innovative management strategies to reduce circadian misalignment Type Journal Article
  Year 2012 Publication Nature and Science of Sleep Abbreviated Journal Nat Sci Sleep  
  Volume 4 Issue Pages 111-132  
  Keywords bright light; circadian rhythms; melatonin; night work; phase-shifting; sleep  
  Abstract There are three mechanisms that may contribute to the health, performance, and safety problems associated with night-shift work: (1) circadian misalignment between the internal circadian clock and activities such as work, sleep, and eating, (2) chronic, partial sleep deprivation, and (3) melatonin suppression by light at night. The typical countermeasures, such as caffeine, naps, and melatonin (for its sleep-promoting effect), along with education about sleep and circadian rhythms, are the components of most fatigue risk-management plans. We contend that these, while better than nothing, are not enough because they do not address the underlying cause of the problems, which is circadian misalignment. We explain how to reset (phase-shift) the circadian clock to partially align with the night-work, day-sleep schedule, and thus reduce circadian misalignment while preserving sleep and functioning on days off. This involves controlling light and dark using outdoor light exposure, sunglasses, sleep in the dark, and a little bright light during night work. We present a diagram of a sleep-and-light schedule to reduce circadian misalignment in permanent night work, or a rotation between evenings and nights, and give practical advice on how to implement this type of plan.  
  Address Biological Rhythms Research Laboratory, Rush University Medical Center, Chicago, IL, USA  
  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 1179-1608 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:23620685; PMCID:PMC3630978 Approved no  
  Call Number IDA @ john @ Serial 149  
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