Poor-Quality Sleep Is Associated with Metabolic Syndrome in Korean Adults

Dec 6, 2013The Tohoku journal of experimental medicine

Poor sleep linked to metabolic syndrome in Korean adults

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Abstract

Adjusted odds ratios for metabolic syndrome (MetS) were 4.89 for ≤ 5 hours and 5.98 for ≥ 9 hours of sleep duration compared to 7 hours.

Sleep duration of ≤ 5 hours and ≥ 9 hours is associated with increased odds of MetS.
Poor sleep quality and high risk of sleep-related breathing disorder (SRBD) are linked to higher odds of MetS.
Higher prevalence of abdominal obesity and elevated triglycerides is observed in individuals with poor sleep quality.
Higher prevalence of elevated triglycerides and insulin resistance is noted in those with extreme sleep durations.
The findings suggest that sleep duration and quality may influence metabolic health through mechanisms related to body fat and insulin sensitivity.

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Sleep disorder and metabolic syndrome (MetS) are important health-related problems. Recently, sleep duration has decreased among Korean adults. In this study, we examined whether sleep quality is associated with MetS by analyzing 301 subjects, aged 20 years or over, without acute and severe illness who visited three primary care clinics. Sleep duration, sleep quality and the risk of sleep-related breathing disorder (SRBD) were assessed with a standardized sleeping-estimating instrument. MetS was defined according to the modified diagnostic criteria of the National Cholesterol Education Program Adult Treatment Panel-III using the Korean abdominal obesity definition. In the multiple logistic regression analysis, compared with the 7-hour sleep group, the adjusted odds ratios (ORs) of the ≤ 5- and ≥ 9-hour sleep groups for MetS were 4.89 and 5.98, respectively. Compared with the good-sleep quality and low-SRBD risk groups, the adjusted ORs of the poor-quality sleep and high-SRBD risk groups were 3.83 and 1.92, respectively (p < 0.05). In the ≤ 5- and ≥ 9-hour sleep groups, the prevalence of elevated triglyceride and high HOMA-IR was higher (p = 0.069). In the poor-quality sleep group, the prevalence of abdominal obesity, elevated triglyceride, low HDL cholesterol, high fasting insulin and high HOMA-IR were higher. In the high-SRBD risk group, the prevalence of abdominal obesity, obesity and elevated triglyceride were higher (p < 0.05). Overall, the ≤ 5- or ≥ 9-hour sleep duration, poor-quality sleep and high-SRBD risk are related with the high prevalence of MetS, perhaps through elevated insulin-resistance resulting from adiposity.

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Poor-Quality Sleep Is Associated with Metabolic Syndrome in Korean Adults

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