Restorative effects of a short afternoon nap (<30 min) in the elderly on subjective mood, performance and eeg activity
2000
This study investigated the effects of a short afternoon nap (<30 min) in the elderly on subjective mood, performance and electroencephalograms (EEG). Ten healthy elderly persons who habitually napped in the afternoon three or more times a week participated in the present study. They participated in two experimental conditions with an interval of more than five days. In the nap condition, the participants went to bed at 13:00 hours and slept for 30 min, whereas they just had a rest while watching television in the no-nap condition. In both conditions, subjective sleepiness, fatigue, performance and EEG activities with eyes opened and closed were repeatedly measured before and after the nap or rest. The nap significantly reduced subjective sleepiness and fatigue in the afternoon. It also improved performance levels and EEG theta, alpha 1 or alpha 2 band activities with eyes opened and closed. These findings suggest that a short afternoon nap is useful for the elderly in maintaining their daytime psychological, behavioral and physiological arousal at an adequate level.
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