Timing and quality of sleep in a rural Brazilian family-based cohort, the Baependi Heart Study

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art_BEIJAMINI_Timing_and_quality_of_sleep_in_a_rural_2016.PDF (893.63 KB)
Citações na Scopus
22
Tipo de produção
article
Data de publicação
2016
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
NATURE PUBLISHING GROUP
Autores
KNUTSON, K. L.
EGAN, K. J.
Citação
SCIENTIFIC REPORTS, v.6, article ID 39283, 9p, 2016
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Sleep is modulated by several factors, including sex, age, and chronotype. It has been hypothesised that contemporary urban populations are under pressure towards shorter sleep duration and poorer sleep quality. Baependi is a small town in Brazil that provides a window of opportunity to study the influence of sleep patterns in a highly admixed rural population with a conservative lifestyle. We evaluated sleep characteristics, excessive daytime sleepiness, and chronotype using the Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale and Morningness-Eveningness Questionnaire questionnaires, respectively. The sample consisted of 1,334 subjects from the Baependi Heart study (41.5% male; age: 46.5 +/- 16.2 y, range: 18-89 years). Average self-reported sleep duration was 07:07 +/- 01:31 (bedtime 22:32 +/- 01:27, wake up time: 06:17 +/- 01:25 hh:min), sleep quality score was 4.9 + 3.2, chronotype was 63.6 +/- 10.8 and daytime sleepiness was 7.4 +/- 4.8. Despite a shift towards morningness in the population, chronotype remained associated with reported actual sleep timing. Age and sex modulated the ontogeny of sleep and chronotype, increasing age was associated with earlier sleep time and shorter sleep duration. Women slept longer and later, and reported poorer sleep quality than men (p < 0.0001). This study provides indirect evidence in support of the hypothesis that sleep timing was earlier prior to full urbanisation.
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URI
https://observatorio.fm.usp.br/handle/OPI/17998
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MPS
Artigos e Materiais de Revistas Científicas - FM/MCP
Artigos e Materiais de Revistas Científicas - HC/InCor
Artigos e Materiais de Revistas Científicas - LIM/09
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