title: Association between Sleep Duration and Measurable Cardiometabolic Risk Factors in Healthy Korean Women: The Fourth and Fifth Korean National Health and Nutrition Examination Surveys (KNHANES IV and V).
abstract: Study Objectives.To examine the association between sleep duration and prevalence of metabolic syndrome (MetS) and its components in healthy Korean women.Design.Cross-sectional study, using the Fourth and Fifth Korean National Health and Nutrition Examination Surveys.Methods.Among 8505 women (25-70 years) from KNHANES IV and V, participants were classified into five sleep groups based on self-reported sleep duration. MetS and its components were defined using the criteria set forth in National Cholesterol Education Program-Adult Treatment Panel III. We used multivariate logistic regression analysis.Results.After adjusting for various confounders, shorter sleep duration (≤6 h) was found to have an association with low risk of reduced high-density lipoprotein cholesterol and increased triglycerides, whereas very long sleep duration was found to have high risk of increased triglycerides. However, abdominal obesity showed an opposite trend: short sleep duration was associated with higher risk of abdominal obesity than long sleep duration. Fasting glucose levels increased as sleep duration increased, but without significance. Moreover, blood pressure was not significantly associated with sleep duration. Consequently, MetS was less prevalent in those with short sleep duration.Conclusions.Sleep duration was positively associated with MetS, especially dyslipidemia and fasting hyperglycemia, but inversely associated with abdominal obesity.
authors.affiliation: Department of Family Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
authors.forename: Hyeyeon
authors.initials: H
authors.lastname: Min
authors.affiliation: Department of Family Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
authors.forename: Yoo Jin
authors.initials: YJ
authors.lastname: Um
authors.affiliation: Department of Education and Research, Seoul National University Hospital, Seoul, Republic of Korea.
authors.forename: Bum Sup
authors.initials: BS
authors.lastname: Jang
authors.affiliation: Department of Education and Research, Seoul National University Hospital, Seoul, Republic of Korea.
authors.forename: Doosup
authors.initials: D
authors.lastname: Shin
authors.affiliation: Department of Family Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
authors.forename: EunJoo
authors.initials: E
authors.lastname: Choi
authors.affiliation: Department of Family Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
authors.forename: Sang Min
authors.identifier: 0000-0002-7498-4829
authors.initials: SM
authors.lastname: Park
authors.affiliation: Department of Family Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
authors.forename: Kiheon
authors.identifier: 0000-0002-7139-2342
authors.initials: K
authors.lastname: Lee