Sleep duration trajectories and body composition in adolescents: Prospective birth cohort study

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dc.contributor.authorSchäfer, Antônio Augusto
dc.contributor.authorDomingues, Marlos Rodrigues
dc.contributor.authorDahly, Darren L.
dc.contributor.authorMeller, F. O.
dc.contributor.authorGonçalves, Helen
dc.contributor.authorWehrmeister, Fernando César
dc.contributor.authorAssunção, M. C. F.
dc.date.accessioned2017-06-21T11:01:25Z
dc.date.available2017-06-21T11:01:25Z
dc.date.issued2016-03-24
dc.description.abstractWe aimed to estimate the association between sleep duration trajectories and body composition in adolescents. We used data from participants of the 1993 Pelotas (Brazil) Birth Cohort Study who were later followed up at age 18 years (response rate of 81.3%). At the time, 3974 adolescents had complete data on body composition, which was assessed by air displacement plethysmography. Sleep duration was self-reported by participants at ages 11 and 18 years. Analyses were sex-stratified. The mean sleep duration at 11 years was 9.7 (SD 1.4) and 8.4 (SD 1.9) at 18 years. Sleep duration was dichotomized as inadequate (<8 hours/day) or adequate (?8 hours/day). Mean body mass, fat mass, and fat-free mass indices at 18 years were 23.4 kg/m2 (SD 4.5), 6.1 kg/m2 (SD 3.9) and 17.3 kg/m2 (SD 2.5), respectively. Girls who reported inadequate sleep duration at 11 years of age, but adequate sleep duration at 18, on average experienced an increase in body mass index (? = 0.39 z-scores; 95% CI 0.13, 0.65), fat mass index (? = 0.30 z-scores; 95% CI 0.07, 0.53), and fat-free mass index (? = 0.24 z-scores; 95% CI 0.08, 0.39) compared to those who had adequate sleep duration at both time points. The results suggest that changes in sleep duration across adolescence may impact body composition in later adolescence and that this may differ by sexen
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleide0152348
dc.identifier.citationSchäfer, A. A., Domingues, M. R., Dahly, D. L., Meller, F. O., Gonçalves, H., Wehrmeister, F. C. and Assunção, M. C. F. (2016) 'Sleep Duration Trajectories and Body Composition in Adolescents: Prospective Birth Cohort Study', PLoS ONE, 11(3), e0152348 (9pp) doi: 10.1371/journal.pone.0152348en
dc.identifier.doi10.1371/journal.pone.0152348
dc.identifier.endpage9
dc.identifier.issn1932-6203
dc.identifier.issued3
dc.identifier.journaltitlePLoS ONEen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/4130
dc.identifier.volume11
dc.language.isoenen
dc.publisherPLoSen
dc.relation.urihttp://journals.plos.org/plosone/article?id=10.1371/journal.pone.0152348
dc.rights© 2016, Schäfer et al. 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.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectSleepen
dc.subjectAdolescentsen
dc.subjectFatsen
dc.subjectCohort studiesen
dc.subjectObesityen
dc.subjectPhysical activityen
dc.subjectBody mass indexen
dc.subjectPregnancyen
dc.titleSleep duration trajectories and body composition in adolescents: Prospective birth cohort studyen
dc.typeArticle (peer-reviewed)en
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