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

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dc.contributor.author Schäfer, Antônio Augusto
dc.contributor.author Domingues, Marlos Rodrigues
dc.contributor.author Dahly, Darren L.
dc.contributor.author Meller, F. O.
dc.contributor.author Gonçalves, Helen
dc.contributor.author Wehrmeister, Fernando César
dc.contributor.author Assunção, M. C. F.
dc.date.accessioned 2017-06-21T11:01:25Z
dc.date.available 2017-06-21T11:01:25Z
dc.date.issued 2016-03-24
dc.identifier.citation Schäfer, 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.0152348 en
dc.identifier.volume 11
dc.identifier.issued 3
dc.identifier.startpage 1
dc.identifier.endpage 9
dc.identifier.issn 1932-6203
dc.identifier.uri http://hdl.handle.net/10468/4130
dc.identifier.doi 10.1371/journal.pone.0152348
dc.description.abstract We 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 sex en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher PLoS en
dc.relation.uri http://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.uri https://creativecommons.org/licenses/by/4.0/ en
dc.subject Sleep en
dc.subject Adolescents en
dc.subject Fats en
dc.subject Cohort studies en
dc.subject Obesity en
dc.subject Physical activity en
dc.subject Body mass index en
dc.subject Pregnancy en
dc.title Sleep duration trajectories and body composition in adolescents: Prospective birth cohort study en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Darren L. Dahly, Epidemiology and Public Health, University College Cork, Cork, Ireland. +353-21-490-3000 Email: ddahly@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.description.status Peer reviewed en
dc.identifier.journaltitle PLoS ONE en
dc.internal.IRISemailaddress ddahly@ucc.ie en
dc.identifier.articleid e0152348


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© 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. Except where otherwise noted, this item's license is described as © 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.
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