Timing and Length of Nocturnal Sleep and Daytime Napping and Associations With Obesity Types in High-, Middle-, and Low-Income Countries
JAMA Netw Open
; 4(6): 2113775, June. 2021. graf, tab
Artigo
em Inglês
| Sec. Est. Saúde SP, CONASS, SESSP-IDPCPROD, Sec. Est. Saúde SP
| ID: biblio-1283951
Biblioteca responsável:
BR79.1
ABSTRACT
IMPORTANCE Obesity is a growing public health threat leading to serious health consequences. Late bedtime and sleep loss are common in modern society, but their associations with specific obesity types are not well characterized. OBJECTIVE:
To assess whether sleep timing and napping behavior are associated with increased obesity, independent of nocturnal sleep length. DESIGN, SETTING, ANDPARTICIPANTS:
This large, multinational, population-based cross-sectional study used data of participants from 60 study centers in 26 countries with varying income levels as part of the Prospective Urban Rural Epidemiology study. Participants were aged 35 to 70 years and were mainly recruited during 2005 and 2009. Data analysis occurred from October 2020 through March 2021. EXPOSURES Sleep timing (ie, bedtime and wake-up time), nocturnal sleep duration, daytime napping. MAIN OUTCOMES ANDMEASURES:
The primary outcomes were prevalence of obesity, specified as general obesity, defined as body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) of 30 or greater, and abdominal obesity, defined as waist circumference greater than 102 cm for men or greater than 88 cm for women. Multilevel logistic regression models with random effects for study centers were performed to calculate adjusted odds ratios (AORs) and 95% CIs.RESULTS:
Overall, 136 652 participants (81 652 [59.8%] women; mean [SD] age, 51.0 [9.8] years) were included in analysis. A total of 27 195 participants (19.9%) had general obesity, and 37 024 participants (27.1%) had abdominal obesity. The mean (SD) nocturnal sleep duration was 7.8 (1.4) hours, and the median (interquartile range) midsleep time was 215 AM (130 AM-300 AM). A total of 19 660 participants (14.4%) had late bedtime behavior (ie, midnight or later). Compared with bedtime between 8 PM and 10 PM, late bedtime was associated with general obesity (AOR, 1.20; 95% CI, 1.12-1.29) and abdominal obesity (AOR, 1.20; 95% CI, 1.12-1.28), particularly among participants who went to bed between 2 AM and 6 AM (general obesity AOR, 1.35; 95% CI, 1.18-1.54; abdominal obesity AOR, 1.38; 95% CI, 1.21-1.58). Short nocturnal sleep of less than 6 hours was associated with general obesity (eg, <5 hours AOR, 1.27; 95% CI, 1.13-1.43), but longer napping was associated with higher abdominal obesity prevalence (eg, ≥1 hours AOR, 1.39; 95% CI, 1.31-1.47). Neither going to bed during the day (ie, before 8PM) nor wake-up time was associated with obesity. CONCLUSIONS AND RELEVANCE This cross-sectional study found that late nocturnal bedtime and short nocturnal sleep were associated with increased risk of obesity prevalence, while longer daytime napping did not reduce the risk but was associated with higher risk of abdominal obesity. Strategic weight control programs should also encourage earlier bedtime and avoid short nocturnal sleep to mitigate obesity epidemic.
Texto completo:
Disponível
Coleções:
Bases de dados nacionais
/
Brasil
Base de dados:
CONASS
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Sec. Est. Saúde SP
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SESSP-IDPCPROD
Assunto principal:
Sono
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Índice de Massa Corporal
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Obesidade
Tipo de estudo:
Estudo observacional
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Fatores de risco
Aspecto:
Determinantes sociais da saúde
Idioma:
Inglês
Revista:
JAMA Netw Open
Ano de publicação:
2021
Tipo de documento:
Artigo
Instituição/País de afiliação:
Africa Unit for Transdisciplinary Health Research, North-West University/ZA
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Department of Cardiac Sciences, King Fahad Cardiac Center, King Saud University College of Medicine/SA
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Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia/MY
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Department of Community Medicine and School of Public Health, Postgraduate Institute of Medical Education and Research/IN
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Department of Health Management, Faculty of Health Sciences, Marmara University/TR
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Department of Medicine, Faculty of Health Sciences, Queen's University/CA
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Department of Medicine, University of Ottawa/CA
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Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg and Sahlgrenska University Hospital/SE
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Department of Physiology, University of Zimbabwe College of Health Sciences/ZW
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Department of Social Medicine, Wroclaw Medical University/PL