Recuperative power of a short daytime nap with or without stage 2 sleep.

@article{Hayashi2005RecuperativePO,
  title={Recuperative power of a short daytime nap with or without stage 2 sleep.},
  author={Mitsuo Hayashi and Naoko Motoyoshi and Tadao Hori},
  journal={Sleep},
  year={2005},
  volume={28 7},
  pages={
          829-36
        }
}
STUDY OBJECTIVES The recuperative effect of a nap of less than 30 minutes has been confirmed. Such naps consist mainly of stages 1 and 2 sleep. The present study examined whether sleep stage 1 or 2 contributed to the recuperative effect of a short nap. DESIGN Repeated-measurement within-subject design. After sleep was restricted to 1.5 hours less than their usual nocturnal sleep, participants took a rest (No-nap condition) or a nap at 2:00 PM. In the nap condition, they were awakened after 5… Expand
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References

SHOWING 1-10 OF 50 REFERENCES
The effects of a 20-min nap at noon on sleepiness, performance and EEG activity.
  • M. Hayashi, S. Ito, T. Hori
  • Psychology, Medicine
  • International journal of psychophysiology : official journal of the International Organization of Psychophysiology
  • 1999
TLDR
The results suggest that a 20-min nap at noon had partial positive effects on the maintenance of the daytime arousal level and improved volition and the self-rating of task performance. Expand
The short-term benefits of brief and long naps following nocturnal sleep restriction.
TLDR
It is concluded that the detrimental effects of sleep restriction were more rapidly and significantly ameliorated, at least within the hour following the nap, by a 10-minute afternoon nap. Expand
The recuperative value of brief and ultra‐brief naps on alertness and cognitive performance
TLDR
There were no measurable improvements for the 30‐ and 90‐s nap conditions relative to no nap, which suggests that the mechanism underlying the benefits of brief naps does not appear to be the onset of stage 1 sleep. Expand
The effects of a short daytime nap after restricted night sleep.
TLDR
It was concluded that the short nap had a clear positive effect on alertness and subjective sleepiness decreased significantly, compared to baseline. Expand
The effects of a 20 min nap in the mid-afternoon on mood, performance and EEG activity
TLDR
The results suggest that a short 20 min nap in the mid-afternoon had positive effects upon the maintenance of the daytime vigilance level and the subjective sleepiness, performance level and self-confidence of their task performance. Expand
Restorative effects of a short afternoon nap (<30 min) in the elderly on subjective mood, performance and eeg activity.
TLDR
It is suggested that a short afternoon nap is useful for the elderly in maintaining their daytime psychological, behavioral and physiological arousal at an adequate level. Expand
Napping, Stimulant, and Four Choice Performance
Abstract : The primary purpose of this paper is to determine whether a short sleep (nap) can maintain human cognitive functions during a long continuous work period. In continuous work environments,Expand
Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficit.
TLDR
It is suggested that under prior sleep deficit, a 15-min nap during post-lunch rest maintains subsequent alertness, performance, and autonomic function following a short sleep the preceding night, particularly in the mid-afternoon. Expand
Napping versus resting: effects on performance and mood.
TLDR
Results showed that napping and resting served to improve mood regardless of whether a person habitually naps or not, and performance measures were not affected by either napping or resting. Expand
Effects of Self-Awakening on Sleep Structure of a Daytime Short Nap and on Subsequent Arousal Levels
TLDR
It appeared a short nap with self-awakening was more effective in reducing a post-lunch dip than one with forced-awakening, indicating that arousal was higher after self-AWakening. Expand
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