Please use this identifier to cite or link to this item: https://doi.org/10.5665/sleep.5552
Title: Cognitive performance, sleepiness, and mood in partially sleep deprived adolescents: The need for sleep Study
Authors: Lo J.C. 
Ong J.L. 
Leong R.L.F. 
Gooley J.J. 
Chee M.W.L. 
Keywords: adolescent
adult
alertness
Article
attention
cognition
controlled study
effect size
executive function
female
high school
human
human experiment
learning
male
mood
normal human
parallel design
priority journal
sleep deprivation
sleep time
somnolence
working memory
affect
cognition
pathophysiology
physiology
polysomnography
randomized controlled trial
short term memory
sleep deprivation
sleep stage
Adolescent
Affect
Attention
Cognition
Executive Function
Female
Humans
Male
Memory, Short-Term
Polysomnography
Sleep Deprivation
Sleep Stages
Issue Date: 2016
Citation: Lo J.C., Ong J.L., Leong R.L.F., Gooley J.J., Chee M.W.L. (2016). Cognitive performance, sleepiness, and mood in partially sleep deprived adolescents: The need for sleep Study. Sleep 39 (3) : 687-698. ScholarBank@NUS Repository. https://doi.org/10.5665/sleep.5552
Abstract: Study Objectives: To investigate the effects of sleep restriction (7 nights of 5 h time in bed [TIB]) on cognitive performance, subjective sleepiness, and mood in adolescents. Methods: A parallel-group design was adopted in the Need for Sleep Study. Fifty-six healthy adolescents (25 males, age = 15-19 y) who studied in top high schools and were not habitual short sleepers were randomly assigned to Sleep Restriction (SR) or Control groups. Participants underwent a 2-w protocol consisting of 3 baseline nights (TIB = 9 h), 7 nights of sleep opportunity manipulation (TIB = 5 h for the SR and 9 h for the control groups), and 3 nights of recovery sleep (TIB = 9 h) at a boarding school. A cognitive test battery was administered three times each day. Results: During the manipulation period, the SR group demonstrated incremental deterioration in sustained attention, working memory and executive function, increase in subjective sleepiness, and decrease in positive mood. Subjective sleepiness and sustained attention did not return to baseline levels even after 2 recovery nights. In contrast, the control group maintained baseline levels of cognitive performance, subjective sleepiness, and mood throughout the study. Incremental improvement in speed of processing, as a result of repeated testing and learning, was observed in the control group but was attenuated in the sleep-restricted participants, who, despite two recovery sleep episodes, continued to perform worse than the control participants. Conclusions: A week of partial sleep deprivation impairs a wide range of cognitive functions, subjective alertness, and mood even in high-performing high school adolescents. Some measures do not recover fully even after 2 nights of recovery sleep. Commentary: A commentary on this article appears in this issue on page 497.
Source Title: Sleep
URI: https://scholarbank.nus.edu.sg/handle/10635/174629
ISSN: 0161-8105
DOI: 10.5665/sleep.5552
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