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The night before night shift: Chronotype impacts total sleep and rapid eye movement sleep during a strategically delayed sleep
How natural sleep timing affects total and dream sleep before a night shift with delayed sleep time
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Abstract
Seventy-two healthy adults participated in a study examining sleep quality across different chronotypes with normally timed and delayed sleep opportunities.
- Early chronotypes experienced less total sleep with delayed sleep compared to normally timed sleep (p = 0.044).
- Intermediate and late chronotypes had more rapid eye movement (REM) sleep during delayed sleep than with normally timed sleep (p = 0.013 and p = 0.012 respectively).
- Wakefulness was higher for all chronotypes during the later hours of the delayed sleep opportunity compared to the start.
- Chronotype may influence how sleep quality and architecture are affected by sleep timing.
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