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Less physical activity and more varied and disrupted sleep is associated with a less favorable metabolic profile in adolescents

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Rögnvaldsdóttir, Vaka
dc.contributor.author Brychta, Robert
dc.contributor.author Hrafnkelsdóttir, Soffía M.
dc.contributor.author Chen, Kong Y.
dc.contributor.author Arngrímsson, Sigurbjörn Árni
dc.contributor.author Johannsson, Erlingur
dc.contributor.author Gudmundsdottir, Sigridur Lara
dc.date.accessioned 2021-01-14T09:20:27Z
dc.date.available 2021-01-14T09:20:27Z
dc.date.issued 2020-05-15
dc.identifier.citation Rognvaldsdottir V, Brychta RJ, Hrafnkelsdottir SM, Chen KY, Arngrimsson SA, Johannsson E, et al. (2020) Less physical activity and more varied and disrupted sleep is associated with a less favorable metabolic profile in adolescents. PLoS ONE 15(5): e0229114. https://doi.org/10.1371/journal.pone.0229114
dc.identifier.issn 1932-6203
dc.identifier.uri https://hdl.handle.net/20.500.11815/2362
dc.description Publisher's version (útgefin grein)
dc.description.abstract Background: Sleep and physical activity are modifiable behaviors that play an important role in preventing overweight, obesity, and metabolic health problems. Studies of the association between concurrent objective measures of sleep, physical activity, and metabolic risk factors among adolescents are limited. Objective: The aim of the study was to examine the association between metabolic risk factors and objectively measured school day physical activity and sleep duration, quality, onset, and variability in adolescents. Materials and methods: We measured one school week of free-living sleep and physical activity with wrist actigraphy in 252 adolescents (146 girls), aged 15.8±0.3 years. Metabolic risk factors included body mass index, waist circumference, total body and trunk fat percentage, resting blood pressure, and fasting glucose and insulin levels. Multiple linear regression adjusted for sex, parental education, and day length was used to assess associations between metabolic risk factors and sleep and activity parameters. Results: On average, participants went to bed at 00:22±0.88 hours and slept 6.2±0.7 hours/night, with 0.83±0.36 hours of awakenings/night. However, night-to-night variability in sleep duration was considerable (mean ± interquartile range) 0.75±0.55 hours) and bedtime (0.64±0.53 hours) respectively. Neither average sleep duration nor mean bedtime was associated with any metabolic risk factors. However, greater night-to-night variability in sleep duration and bedtime was associated with higher total body and trunk fat percentage, and less physical activity was associated with higher trunk fat percentage and insulin levels. Conclusion: Greater nightly variation in sleep duration and in bedtime and less physical activity were associated with a less favorable metabolic profile in adolescents. These findings support the idea that, along with an adequate amount of physical activity, a regular sleep schedule is important for the metabolic health of adolescents.
dc.description.sponsorship VR had financial support by The Icelandic Centre for Research (RANNIS) The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
dc.format.extent e0229114
dc.language.iso en
dc.publisher Public Library of Science (PLoS)
dc.relation.ispartofseries PLOS ONE;15(5)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Sleep
dc.subject Physical activity
dc.subject Adolescents
dc.subject Insulin
dc.subject Blood pressure
dc.subject Svefn
dc.subject Hreyfing (heilsurækt)
dc.subject Ungt fólk
dc.subject Heilsufar
dc.title Less physical activity and more varied and disrupted sleep is associated with a less favorable metabolic profile in adolescents
dc.type info:eu-repo/semantics/article
dcterms.license This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.description.version Peer Reviewed
dc.identifier.journal Plos One
dc.identifier.doi 10.1371/journal.pone.0229114
dc.relation.url https://dx.plos.org/10.1371/journal.pone.0229114
dc.contributor.department Rannsóknarstofa í íþrótta- og heilsufræði (HÍ)
dc.contributor.department Research Centre for Sport and Health Sciences (UI)

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