Article

Long Sleep Duration and Childhood Overweight/Obesity and Body Fat

Department of Anthropology, Research Centre for Anthropology and Health, University of Coimbra, Coimbra, Portugal.
American Journal of Human Biology (Impact Factor: 1.7). 05/2009; 21(3):371-6. DOI: 10.1002/ajhb.20884
Source: PubMed

ABSTRACT

To assess the association between short sleep duration and overweight/obesity and body fat (BF) and to identify correlates of short sleep duration in a sample of Portuguese children. A cross-sectional study of children 7-9 years (n = 4511) was performed between October 2002 and June 2003. Weight, height, and skinfolds were measured, and parents filled out a questionnaire about family characteristics as well as sleep duration. The prevalence of overweight/obesity and BF (%) both decreased by long sleep duration. After adjusted for confounders, the odds ratio (OR) for overweight/obesity and sleep duration were as follows: reference >11 h/d; 10-11 h/d, OR: 1.3; confidence interval (CI):1.26, 1.33; 9-10 h/d, OR: 1.16; CI: 1.13, 1.19; and <9 h, OR: 3.22; CI: 3.11, 3.32. Children whose parents had a low educational level slept less time during each night than children whose parents had a higher educational level; children who spent more time watching television slept less time than those who watched less television, and those children engaged in physical activity slept more time each night than sedentary children. Our results showed an inverse relationship between long sleep duration and overweight/obesity prevalence as well as with body fat, and these findings are important because sleep duration is a potentially modifiable risk factor that could be important to consider in the prevention and treatment of childhood obesity.

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    • "An Australian study shows that 23.9% of 3495 children and adolescents aged 5 to 15 years sleep less than 9 hours [21]. Also Padez and colleges demonstrated that 45.9% of Portuguese children aged 7 to 9 years (n = 4511) sleep less than 9 hours [22]. 25% of American adolescents report sleeping 6 hours or less per night [23]. "

    Full-text · Article · Jan 2015 · Health
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    • "Sleep is critical for adolescent health, development, and functioning. Inadequate sleep quantity and quality have been associated with poor school performance, mental health problems, poor sociability, behavioral problems, and the development of obesity and its accompanying comorbidities in adolescents [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]. Furthermore, sleep problems experienced during adolescence are associated with increased incidence of adulthood depression, anxiety, attention problems , and aggressive behaviors, thereby indicating a longterm effect of poor sleep on mental health [13]. "
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    Full-text · Article · Apr 2014
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    • "The recommendation was supported by observational data from two large cross-sectional studies involving thousands of children and a meta-analysis of sleep data based on 12 studies with 30,002 children aged 3–18 y from France, Tunisia, Japan, Germany, USA, Brazil, Portugal, United Kingdom, Canada, Taiwan and China [3-5]. Numerous studies also have documented that short sleep duration is associated with increased risk of childhood and adult obesity [3,4,6-10]. In an adult sleep debt study, short sleep duration led to a decrease in serum leptin and an increase in ghrelin suggesting that short sleep might stimulate appetite and increase food intake [11,12]. "
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    Full-text · Article · Jul 2013 · BMC Public Health
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