Three decades of continuous wrist-activity recording: analysis of sleep duration
| Autor: | Peter Achermann, Thomas Rusterholz, Alexander A. Borbély |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male 0301 basic medicine Gerontology Aging medicine.medical_specialty Time Factors Cognitive Neuroscience Common method Wrist Audiology 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine Rhythm Professional environment medicine Humans Spectral analysis Motor activity Aged Monitoring Physiologic Retirement Age Factors General Medicine Middle Aged Actigraphy Circadian Rhythm 030104 developmental biology medicine.anatomical_structure Sleep (system call) Sleep Psychology 030217 neurology & neurosurgery Sleep duration |
| Zdroj: | Journal of Sleep Research. 26:188-194 |
| ISSN: | 0962-1105 |
| DOI: | 10.1111/jsr.12492 |
| Popis: | Motor activity recording by a wrist-worn device is a common method to monitor the rest-activity cycle. The first author wore an actimeter continuously for more than three decades, starting in 1982 at the age of 43.5 years. Until November 2006 analysis was performed on a 15-min time base, and subsequently on a 2-min time base. The timing of night-time sleep was determined from the cessation and re-occurrence of daytime-level activity. Sleep duration declined from an initial 6.8 to 6 h in 2004. The declining trend was reversed upon retirement, whereas the variance of sleep duration declined throughout the recording period. Before retirement, a dominant 7-day rhythm of sleep duration as well as an annual periodicity was revealed by spectral analysis. These variations were attenuated or vanished during the years after retirement. We demonstrate the feasibility of continuous long-term motor activity recordings to study age-related variations of the rest-activity cycle. Here we show that the embeddedness in a professional environment imparts a temporal structure to sleep duration. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text