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The global surge in obesity rates is closely linked to the rise in sleep deprivation and prevalence of sleep disorders. This study aimed to investigate the association between weekend catch-up sleep (CUS) and obesity among Korean adults. Using multiple logistic regression analysis, we analyzed the data of 6790 adults aged >19 years obtained from the Korea National Health and Nutrition Examination Survey 2016–2021. In the subgroup analysis, we conducted multiple logistic regression analysis to determine the association between weekend CUS and obesity, stratified by sex. Women were significantly more likely to be obese than men (odds ratio (OR) = 0.53, 95% confidence interval (CI) = 0.46–0.61). Obesity was associated with 1 ≤ weekend CUS < 2 (OR = 0.86, 95% CI = 0.75–0.99) but not with weekend CUS ≤ 0. Compared to men, women had a lower obesity risk when engaging in weekend supplementary sleep that was 1 ≤ weekend CUS < 2 (OR = 0.78, 95% CI = 0.63–0.97). Our findings revealed that weekend CUS was associated with obesity. Our findings suggest that weekend CUS may offer a form of biological protection against obesity, and they contribute to a better understanding of this association and may serve as a basis for better obesity management. [ABSTRACT FROM AUTHOR]

This study aims to determine whether changes in sleep quantity and quality in childhood are associated with incidence of depressive symptoms. We used the three waves of the Korean Children & Youth Panel Survey (2011–2013). Statistical analysis using a generalized estimating equation model was performed. The 2,605 subjects analyzed included 1,453 students in 2012 and 1,152 students in 2013 without depressive symptoms in the prior year. We found that deteriorated or consistently poor sleep quality were important risk factors for depressive symptoms in children. We suggest that early detection and intervention of poor sleep quality in elementary school is required to reduce early onset depressive symptoms. [ABSTRACT FROM AUTHOR]

Background: Previous evidence suggests that there is a correlation between prolonged sitting time and cardio-metabolic disease, such as metabolic syndrome (MS). Cardiovascular disease is the second-leading cause of mortality in South Korea, a country with the longest working hours among all member states of the Organization for Economic Co-operation and Development. However, no previous study has investigated the relationships of overall sitting-time and occupation with MS in South Korea. Accordingly, the present study examined these relationships in a South Korean population.Methods: Data from the sixth Korean National Health and Nutrition Examination Survey (KNHANES), a nationally representative survey with a cross-sectional design, were used in the present study. MS diagnoses were evaluated using the International Diabetes Foundation (IDF) criteria. Participants self-reported their overall sitting times, and occupations were classified using the Korean version of the Standard Classification of Occupations (KSCO). A multiple logistic regression analysis was conducted to evaluate the associations of sitting time and occupation with MS.Results: The risk of MS was 1.21-fold higher among participants who sat for >7 h/day than among those who sat for ≤7 h/day (odds ratio [OR]: 1.21, 95 % confidence interval [CI]: 1.00-1.46). Regarding occupation, office workers had a two-fold higher risk of MS than did agriculture, forestry, and fishery (AFF) workers (OR: 2.01, 95 % CI: 1.26-3.22). In a combined analysis of sitting time and occupation, male participants who sat for >7 h/day and reported an occupation that involves office work (OW) or machine fitting (MF) were significantly more likely to have MS when compared to those who sat for ≤7 h/day and were employed as AFF workers (>7 h/day × OW, OR: 2.41, 95 % CI: 1.05-5.51; >7 h/day × MF, OR: 2.92, 95 % CI: 1.43-5.93).Conclusions: Excessive sitting time and a sedentary occupation correlated positively with MS in South Korean adults. Accordingly, a reduction in the overall sitting time or inclusion of energy-expending activities in the workplace might improve the rate of MS. [ABSTRACT FROM AUTHOR]

Background: Support from one’s family has been reported to have a positive effect on depression severity. Hence, family dinnertimes, when whole family can gather together, can be effective to depression by providing support from family. Aims: We investigate the association between the dinner companion and depression, and the differences in this association by gender, living arrangement and household composition. Methods: We used the Korea National Health and Nutrition Examination Survey 2014 data. A total of 4,181 individuals were included. We classified participants by their dinner companions as follows: dinner with family, dinner with others and eating alone. Depression was measured by using the 9-item Patient Health Questionnaire. Logistic regression analysis was used to investigate the association. Result: Those who ate dinner alone (odds ratio (OR): 1.53, 95% confidence interval (CI): 1.04–2.25) had higher depression rate compared to those who had dinner with family. The subgroup analysis indicated that men, those who live with others and those living in a second-generation household who ate dinner alone had greater odds of having depressive symptoms. Conclusion: Those who usually eat dinner alone have greater odds of developing depression compared to those who have dinner with their family. As such, family dinnertimes may help to alleviate depressive moods. [ABSTRACT FROM AUTHOR]

Aim To identify the association between different living arrangements of intergenerational household composition and depression in older adults. Methods Data from the Korea Longitudinal Study of Aging, the first to fourth waves, were used. Using the first wave as baseline, our analysis included 5046 participants aged ≥60 years with at least one living child. Depression was measured using the 10-item Center for Epidemiological Studies Depression scale. Factors investigated included living arrangements according to household composition and the marital status of a cohabiting adult child. A generalized estimating equation with the logit link for binary outcomes was used to examine the association between living arrangements and depression. Results Compared with the older adults living with a married child and grandchildren, those living alone, those living with an unmarried child, and those living with an unmarried child and grandchildren were more likely to have depression (OR 1.41, 95% CI 1.13-1.75; OR 1.40, 95% CI 1.18-1.66; OR 1.60, 95% CI 1.27-2.01). In particular, women were more likely to have depression than men in the association between living arrangements and depression. Conclusions Efforts should be made to provide social services for older adults living alone and those living with an unmarried child in a two-/three-generation family, in particular, for those who are female. Geriatr Gerontol Int 2017; 17: 2527-2536. [ABSTRACT FROM AUTHOR]