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Naps and circadian rhythms in postmenopausal women.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yoon, In-Young Kripke, Daniel F. Elliott, Jeffrey Langer, Robert D. |
| Copyright Year | 2004 |
| Abstract | BACKGROUND Napping patterns and relationships among naps, circadian rhythms, and nocturnal sleep were evaluated in postmenopausal women. Naps and nocturnal sleep were compared between depressed women and healthy volunteers. METHODS The study included 436 postmenopausal women between the ages of 50 and 81 years. Psychiatric interviews were conducted using the Structured Clinical Interview for DSM-IV Axis I Disorders. Each participant wore a wrist-activity monitor and kept a daily sleep log at home for 1 week. The major urinary melatonin metabolite (6-sulfatoxymelatonin [aMT6s]) was measured for two 24-hour periods at home. RESULTS There was no significant difference in naps and nocturnal sleep patterns between depressed participants (n = 30) and those with no history of mental disorder (n = 222). Three peaks occurred in the timing of napping: approximately 1 hour before bedtime, 8 to 9 hours after wake-up time, and 2 hours after waking, in descending order of magnitude. Significant inverse correlations were observed between evening nap duration and both wake-up time and aMT6s acrophase. The onset time of aMT6s excretion was advanced by 32 minutes in evening nappers. CONCLUSIONS Evening napping, a characteristic of these postmenopausal women, may be related to an advance of circadian rhythms in this age group. Relationships between evening napping and earlier wake-up time may be a common manifestation of advanced circadian rhythms or may be a homeostatic effect. |
| Starting Page | 229 |
| Ending Page | 239 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://watermark.silverchair.com/M844.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAAb4wggG6BgkqhkiG9w0BBwagggGrMIIBpwIBADCCAaAGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMHtwRBZv43g9ZjodlAgEQgIIBcX1g_ZX1w7FoaCTITprvkRJ-85IKBuEgo5fu-PXSeZa5p8xR69W1MVXr4xHj_6cHYAxHmvZ3gsvzNTWRbwMluo1vdkFX3vpH_zMRuB5Z2-oeacG6F9DkbDHF8Qw2LdbGdbNp7cd7Kwpi1lRuqGZPCHIggVJ4w2wL6nauW93YqB1KJeeQ-CYGa5PWLOGlCwT0TpMzjLB1jvrSwoz_0NOYpiIhS5MWc-c3PWSTQa7U0A9Xd6OTafZl9PoSKb6fBqtqR7rL70y0lggblbPX55sl3uhG8Joav_TAxYQ74H0fjMfPqmz7oqHro3caekJRi9ZBERwG7f57nbj_WJvBgK1mx5W6XDbM3DomTWA-Px-VMcXyZUKZrL8c4ZfyfA6ubLQsnSRIGkkATlA96RWaAt1fhl7fm-4sqo6u0itUxtcmhtaqa3US6ttiORZHXS7WBRGy-XOqi6_Yg2vsDzOaOWemrzsixcnQG0ZWW6VgSb2UqnVEwg |
| PubMed reference number | 15345736v1 |
| Volume Number | 59 |
| Issue Number | 8 |
| Journal | The journals of gerontology. Series A, Biological sciences and medical sciences |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | 6-sulfatoxymelatonin DSM-IV Depressive disorder Exclusion Homeostasis Large Melatonin Mental disorders Napping Note (document) Psychotic Disorders Sleep Apnea Syndromes Sleep Disorders, Circadian Rhythm Status Epilepticus |
| Content Type | Text |
| Resource Type | Article |
