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Insomnia and cardiorespiratory fitness in a middle-aged population: the SCAPIS pilot study.
University of Gothenburg.
National Institute for Health and Welfare, Helsinki, Finland.
Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, Åstrandlaboratoriet.ORCID-id: 0000-0001-6058-4982 
University of Gothenburg.
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2019 (Engelska)Ingår i: Sleep and Breathing, ISSN 1520-9512, E-ISSN 1522-1709, Vol. 23, nr 1, s. 319-326Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND: The 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 64 years.

METHODS: Subjects 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 (VO2max). Data on physical activity and sedentary time were collected via waist-worn accelerometers. An insomnia severity index score ≥ 10 was used to define insomnia.

RESULTS: Insomnia was identified in 31.8% of the population. The VO2max was significantly lower in insomnia subjects compared with the non-insomnia group (31.2 ± 6.3 vs. 32.4 ± 6.5 ml* 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 VO2max was found in men, but not in women (β = - 1.15 [95% CI - 2.23-- 0.06] and - 0.09 [- 1.09-0.92], p = 0.038 and 0.866, respectively).

CONCLUSIONS: We 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.

Ort, förlag, år, upplaga, sidor
Springer, 2019. Vol. 23, nr 1, s. 319-326
Nyckelord [en]
Cardiovascular disease, Gender, Insomnia, Maximal oxygen consumption, Physical activity, Population-based cohort
Nationell ämneskategori
Psykiatri
Forskningsämne
Medicin/Teknik
Identifikatorer
URN: urn:nbn:se:gih:diva-5504DOI: 10.1007/s11325-018-1765-9ISI: 000462650800038PubMedID: 30547350OAI: oai:DiVA.org:gih-5504DiVA, id: diva2:1271268
Tillgänglig från: 2018-12-17 Skapad: 2018-12-17 Senast uppdaterad: 2019-04-23Bibliografiskt granskad

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