Effects of Afternoon 'Siesta' Naps on Sleep, Alertness, Performance, and Circadian Rhythms in the Elderly
| Autor: | Lynda R. Rose, Julie Carrier, Timothy H. Monk, Daniel J. Buysse, Bart D. Billy |
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| Rok vydání: | 2001 |
| Předmět: |
Male
Multiple Sleep Latency Test Gerontology medicine.medical_specialty Time Factors Evening Polysomnography Disorders of Excessive Somnolence Audiology Physiology (medical) mental disorders medicine Humans Aged Aged 80 and over medicine.diagnostic_test musculoskeletal neural and ocular physiology fungi Actigraphy Circadian Rhythm Nap Alertness Female Neurology (clinical) Sleep onset medicine.symptom Arousal Sleep Psychology Psychomotor Performance psychological phenomena and processes Somnolence |
| Zdroj: | Sleep. 24:680-687 |
| ISSN: | 1550-9109 0161-8105 |
| Popis: | STUDY OBJECTIVES: To determine the effects of a 90-minute afternoon nap regimen on nocturnal sleep, circadian rhythms, and evening alertness and performance levels in the healthy elderly. DESIGN AND SETTING: Nine healthy elderly subjects (4m, 5f, age range 74y-87y) each experienced both nap and no-nap conditions in two studies each lasting 17 days (14 at home, 3 in the laboratory). In the nap condition a 90-minute nap was enforced between 13:30 and 15:00 every day, in the no-nap condition daytime napping was prohibited, and activity encouraged in the 13:30-15:00 interval. The order of the two conditions was counterbalanced. PARTICIPANTS: N/A INTERVENTIONS: N/A MEASUREMENTS: Diary measures, pencil and paper alertness tests, and wrist actigraphy were used at home. In the 72 hour laboratory studies, these measures were augmented by polysomnographic sleep recording, continuous rectal temperature measurement, a daily evening single trial of a Multiple Sleep Latency Test (MSLT), and computerized tests of mood, activation and performance efficiency. RESULTS: By the second week in the "at home" study, an average of 58 minutes of sleep was reported per siesta nap; in the laboratory, polysomnography confirmed an average of 57 minutes of sleep per nap. When nap and no-nap conditions were compared, mixed effects on nocturnal sleep were observed. Diary measures indicated no significant difference in nocturnal sleep duration, but a significant increase (of 38 mins.) in 24-hour Total Sleep Time (TST) when nocturnal sleeps and naps were added together (p |
| Databáze: | OpenAIRE |
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