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Negative effects of sleep restriction may linger after 1 night of recovery sleep
Date:7/31/2010

ed that circadian constraints on sleep duration may prevent individuals from getting enough sleep in one night to achieve recovery. Acute recovery in a single night would be more likely if the sleep restriction is less severe than that which participants experienced in the study.

Dinges also noted that performance and alertness deteriorated profoundly when the five nights of restricted sleep were followed by a night of either no sleep or only two hours of time in bed.

"This highlights the importance of avoiding all-night sleep deprivation following a period of restricted sleep," he said.

Previous research led by Dinges found that even relatively moderate sleep restriction can seriously impair waking neurobehavioral functions in healthy adults. The study published in the journal Sleep in 2003 found that chronic restriction of sleep to six hours or less per night for 14 consecutive days produced cognitive performance deficits equivalent to up to two nights of total sleep deprivation.

In a 2009 study in the journal Sleep, Dinges and Mathias Basner, MD, reported that people who worked eight hours or more woke up earlier in the morning than people who worked less than eight hours, but they did not go to bed earlier at night. The study also found that watching TV was the primary activity people engaged in before going to bed. The authors suggested that giving up some TV viewing in the evening is one strategy to reduce chronic sleep restriction.


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Contact: Kathleen McCann
kmccann@aasmnet.org
630-737-9700
American Academy of Sleep Medicine
Source:Eurekalert

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