Korean Journal of Community Nutrition

Research Article

[English]
The dietary factors associated with sleep duration in postmenopausal middle-aged women: a cross-sectional study using 2019–2023 Korea National Health and Nutrition Examination Survey data: Eugene Shim; Korean J Community Nutr 2025;30(3):197-213. Published online June 30, 2025; DOI: https://doi.org/10.5720/kjcn.2025.00052

Abstract PDF PubReader ePub: Objectives
This study aimed to analyze dietary factors associated with sleep duration in postmenopausal middle-aged women using data from the Korea National Health and Nutrition Examination Survey (KNHANES), with particular emphasis on the postmenopausal period.
Methods
A total of 3,040 postmenopausal women aged 40–64 years from the 2019–2023 KNHANES were included. Sleep duration was classified into four categories: “appropriate sleep duration” (ASD; 7–9 hours), “short sleep duration” (6–7 hours), “very short sleep duration” (VSSD; < 6 hours), and “long sleep duration” (LSD; > 9 hours). Nutrient and food intake were compared among groups using analysis of covariance. Multinomial logistic and polynomial regression models assessed associations, adjusting for demographic and health covariates.
Results
The VSSD group had higher body mass index and waist circumference than the ASD group, despite lower total energy intake, and also consumed more snack energy and skipped breakfast and dinner more often. This group also had lower intakes of monounsaturated fatty acids and nuts and seeds. In the late menopausal group, greater consumption of cereal grains, fish and shellfish, and beverages was associated with elevated LSD risk. Conversely, higher folate intake in the early menopausal group was inversely associated with VSSD risk. Cholesterol intake was positively associated with LSD risk in both groups. A negative nonlinear association between sleep duration and dietary intake was observed in the early menopausal group when polyunsaturated fatty acid intake exceeded 19.86 g/day and riboflavin intake exceeded 1.76 mg/day. In the late menopausal group, riboflavin intake was strongly correlated with increased LSD risk (odds ratio = 4.776, P = 0.004). Sugar and beverage intake showed a positive linear relationship with sleep duration at average intake levels.
Conclusion
Dietary factors associated with sleep duration differed by postmenopausal period, with specific nutrients and food groups exhibiting variable associations with sleep duration above mean intake levels.meS

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Original Article

[English]
Association of Daily Sleep Duration with Obesity, Macronutrient Intake, and Physical Activity: Inkyung Baik, Chol Shin; Korean J Community Nutr 2011;16(3):315-323. Published online June 30, 2011; DOI: https://doi.org/10.5720/kjcn.2011.16.3.315

Abstract PDF PubReader

There are a few studies that reported the association of sleep duration with calorie intake and energy expenditure. Using cross-sectional data from a population-based prospective study, we evaluated the association of sleep duration with indicators of obesity including body mass index and waist circumference, calorie intake and its proportion of macronutrients, and physical activity. The study subjects were 4,226 male and female adults, who were aged 40 to 69 years and were free of diagnosed cardiovascular disease, diabetes mellitus, and dyslipidemia at baseline. Robust regression analysis was used to analyze associations. The study found that sleep duration is inversely associated with waist circumference, calorie intake, and percent of calories from fat intake and is positively associated with percent of calories from carbohydrate intake and physical activity. The inverse association between sleep duration and waist circumference was stronger among men than among women. The inverse association between sleep duration and calorie intake was stronger among women than among men and such association was also stronger among obese persons than those with a normal body mass index. The positive association between sleep duration and physical activity was strongly demonstrated regardless of sex or obesity. Physical activity is positively associated with sleep duration independent of potential confounding factors including age, sex, income, occupation, marital status, education, smoking status, waist circumference, calorie and macronutrient intake, and alcohol intake.

Citations

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