title: The association between sleep duration, body mass index and metabolic measures in the Hordaland Health Study.
abstract: Several studies show that short self-reported sleep duration is associated with elevated body mass index (BMI). Short sleep duration may change appetite hormones, but whether this also influences metabolic measures like cholesterol and triglycerides is less clear. Furthermore, obesity is linked to increases in blood pressure, and recently, short sleep duration has been shown to be an independent risk factor for hypertension. This is a population-based cross-sectional study (The Hordaland Health Study). A subgroup of 8860 subjects, aged 40-45 years, answered a sleep questionnaire. Body weight, height and blood pressure were measured, and non-fasting blood samples were collected and analyzed for total cholesterol, HDL-cholesterol and triglycerides. Sleep duration was divided into the following subgroups: < 5, 5-5.99, 6-6.99, 7-7.99, 8-8.99 and > or = 9 h. The results show that short sleep duration was associated with elevated BMI and increased prevalence of obesity. Similar to BMI, levels of cholesterol, triglycerides, systolic and diastolic blood pressure were higher in subjects with short sleep duration. This co-variation seemed to be attributed to variables like gender, smoking and BMI. In conclusion, our study confirms a clear association between short sleep duration and elevated BMI and obesity. Furthermore, levels of total cholesterol, HDL-cholesterol, triglycerides and blood pressure were associated with sleep duration.
authors.affiliation: Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway. bjorn.bjorvatn@isf.uib.no
authors.forename: Bjørn
authors.initials: B
authors.lastname: Bjorvatn
authors.forename: Ina Marie
authors.initials: IM
authors.lastname: Sagen
authors.forename: Nicolas
authors.initials: N
authors.lastname: Øyane
authors.forename: Siri
authors.initials: S
authors.lastname: Waage
authors.forename: Arne
authors.initials: A
authors.lastname: Fetveit
authors.forename: Ståle
authors.initials: S
authors.lastname: Pallesen
authors.forename: Reidun
authors.initials: R
authors.lastname: Ursin
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism; D000328:Adult; D001481:Basal Metabolism / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D008076:Cholesterol, HDL / Q000378:metabolism; D003430:Cross-Sectional Studies; D005260:Female; D006304:Health Status; D006801:Humans; D006937:Hypercholesterolemia / Q000453:epidemiology; D008297:Male; D009765:Obesity / Q000453:epidemiology / Q000378:metabolism; D015995:Prevalence; D012890:Sleep / Q000502:physiology*; D011795:Surveys and Questionnaires; D013997:Time Factors; D014280:Triglycerides / Q000378:metabolism
chemical_list: D008076:Cholesterol, HDL; D014280:Triglycerides