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Prevalence of sleep deficiency and use of hypnotic drugs in astronauts before, during, and after spaceflight: an observational study.

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      Abstract

      Sleep deprivation and fatigue are common subjective complaints among astronauts. Previous studies of sleep and hypnotic drug use in space have been limited to post-flight subjective survey data or in-flight objective data collection from a small number of crew members. We aimed to characterise representative sleep patterns of astronauts on both short-duration and long-duration spaceflight missions.

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      Affiliations
      [1 ] Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, MA, USA; Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA. Electronic address: lkbarger@hms.harvard.edu.
      [2 ] Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, MA, USA; Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA.
      [3 ] Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, MA, USA.
      [4 ] Sleep and Chronobiology Laboratory, Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, USA.
      Journal
      Lancet Neurol
      The Lancet. Neurology
      1474-4465
      1474-4422
      Sep 2014
      : 13
      : 9
      S1474-4422(14)70122-X
      10.1016/S1474-4422(14)70122-X
      25127232
      4188436
      NIHMS621934
      Copyright © 2014 Elsevier Ltd. All rights reserved.

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