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Insomnia and cardiorespiratory fitness in a middle-aged population: the SCAPIS pilot study
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2019 (English)In: Sleep and Breathing, ISSN 1520-9512, E-ISSN 1522-1709, Vol. 23, no 1, p. 319-326Article in journal (Refereed) Published
Abstract [en]

BackgroundThe relationship between insomnia and cardiorespiratory fitness (CRF), a well-established risk factor for cardiovascular disease, has not been extensively studied. We aimed to assess the independent association between insomnia and CRF in a population-based cohort of subjects aged 50 to 64years.MethodsSubjects participating in the Swedish CArdioPulmonary bioImaging Study (SCAPIS) pilot cohort (n=603, men 47.9%) underwent a submaximal cycle ergometer test for estimation of maximal oxygen consumption (VO(2)max). Data on physical activity and sedentary time were collected via waist-worn accelerometers. An insomnia severity index score 10 was used to define insomnia.ResultsInsomnia was identified in 31.8% of the population. The VO(2)max was significantly lower in insomnia subjects compared with the non-insomnia group (31.26.3 vs. 32.4 +/- 6.5ml*kg(-1)*min(-1), p=0.028). There was no difference in objectively assessed physical activity or time spent sedentary between the groups. In a multivariate generalized linear model adjusting for confounders, an independent association between insomnia status and lower VO(2)max was found in men, but not in women (=-1.15 [95% CI -2.23--0.06] and -0.09 [-1.09-0.92], p=0.038 and 0.866, respectively).Conclusionsp id=ParWe found a modest, but significant, association between insomnia and lower CRF in middle-aged men, but not in women. Our results suggest that insomnia may link to cardiovascular disease via reduced CRF. Insomnia may require a specific focus in the context of health campaigns addressing CRF.

Place, publisher, year, edition, pages
Springer Berlin/Heidelberg, 2019. Vol. 23, no 1, p. 319-326
Keywords [en]
Cardiovascular disease, Gender, Insomnia, Maximal oxygen consumption, Physical activity, Population-based cohort
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:umu:diva-158106DOI: 10.1007/s11325-018-1765-9ISI: 000462650800038PubMedID: 30547350OAI: oai:DiVA.org:umu-158106DiVA, id: diva2:1304604
Funder
Swedish Heart Lung FoundationKnut and Alice Wallenberg FoundationSwedish Research CouncilVinnovaRegion Västra GötalandAvailable from: 2019-04-12 Created: 2019-04-12 Last updated: 2019-04-12Bibliographically approved

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