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Short sleep-poor sleep?: A polysomnographic study in a large population-based sample of women
Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Stress Res Inst, Stockholm, Sweden.ORCID iD: 0000-0001-8049-8504
Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden;Stockholm Univ, Stress Res Inst, Stockholm, Sweden.ORCID iD: 0000-0001-9873-2506
Siesta Grp, Vienna, Austria.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Lung- allergy- and sleep research.ORCID iD: 0000-0003-2819-2799
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2019 (English)In: Journal of Sleep Research, ISSN 0962-1105, E-ISSN 1365-2869, Vol. 28, no 4, article id e12812Article in journal (Refereed) Published
Abstract [en]

There is a lack of studies on the association between total sleep time (TST) and other polysomnographical parameters. A key question is whether a short sleep is an expression of habitual short sleep, or whether it reflects temporary impairment. The purpose of the present study was to investigate the association between TST and amount of sleep stages and sleep continuity measures, in a large population-based sample of women (n = 385), sleeping at home in a normal daily life setting. The results show that sleep efficiency, N1 (min), N2 (min), REM (min), REM% and proportion of long sleep segments, increased with increasing TST, whereas the number of awakenings/hr, the number of arousals/hr, N1% and REM intensity decreased. In addition, longer sleep was more associated with TST being perceived as of "usual" duration and with better subjective sleep quality. TST was not associated with habitual reported sleep duration. It was concluded that short TST of a recorded sleep in a real-life context may be an indicator of poor objective sleep quality for that particular sleep episode. Because individuals clearly perceived this reduction, it appears that self-reports of poor sleep quality often may be seen as indicators of poor sleep quality. It is also concluded that PSG-recorded sleep duration does not reflect habitual reported sleep duration in the present real-life context.

Place, publisher, year, edition, pages
WILEY , 2019. Vol. 28, no 4, article id e12812
Keywords [en]
delta dominance, REM density, REM intensity, sleep spindles
National Category
Respiratory Medicine and Allergy
Identifiers
URN: urn:nbn:se:uu:diva-391294DOI: 10.1111/jsr.12812ISI: 000476602100008PubMedID: 30609172OAI: oai:DiVA.org:uu-391294DiVA, id: diva2:1344808
Funder
Forte, Swedish Research Council for Health, Working Life and WelfareSwedish Heart Lung FoundationAvailable from: 2019-08-22 Created: 2019-08-22 Last updated: 2019-08-22Bibliographically approved

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