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

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 in...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2016-12, Vol.6 (1), p.39283-39283, Article 39283
Main Authors: Beijamini, F., Knutson, K. L., Lorenzi-Filho, G., Egan, K. J., Taporoski, T. P., De Paula, L. K. G., Negrão, A. B., Horimoto, A. R. V. R., Duarte, N. E., Vallada, H., Krieger, J. E., Pedrazzoli, M., Pereira, A. C., von Schantz, M.
Format: Article
Language:English
Subjects:
631/378/1385/519
692/308/174
Adolescent
Adult
Age
Age Factors
Aged
Aged, 80 and over
Brazil
Daytime
Female
Humanities and Social Sciences
Humans
Male
Medicin och hälsovetenskap
Middle Aged
multidisciplinary
Ontogeny
Quality
Rural Population
Rural populations
Science
Sex Factors
Sleep
Sleep and wakefulness
Sleep deprivation
Sleep Hygiene
Surveys and Questionnaires
Time Factors
Urban populations
Urbanization
Young Adult
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 
ISSN:2045-2322
2045-2322
DOI:10.1038/srep39283