title: Chronotype Differences in Health Behaviors and Health-Related Quality of Life: A Population-Based Study Among Aged and Older Adults.
abstract: This study investigates health behaviors, health-related quality of life (HRQOL) and sleep among chronotypes in a community-based sample (n = 2,976). Analysis of covariance indicated evening types (E-types) had a significantly higher percentage of current smokers and more sleep-interfering behaviors compared to intermediate and morning types (M-type), and also lower physical activity and more sleep disturbance compared to M-types. E-types also had worse mental HRQOL compared to both chronotypes, and worse physical HRQOL compared to M-types. Exploratory analyses indicated E-types consumed more caffeinated beverages at night, smoked or ate heavy meals before bedtime, kept irregular sleep-wake schedules, and took more naps. Mediational analyses indicated that sleep-interfering behavior partially mediated the relationship between chronotype and sleep disturbance, and physical activity partially mediated the relationship between chronotype and mental HRQOL. E-types had more unhealthy behaviors, which may subsequently place them at higher risk for health problems.
authors.affiliation: a Department of Psychology , Sungshin Women's University , Seoul , Korea.|b Department of Psychiatry , Stanford University , Palo Alto , California.
authors.forename: Sooyeon
authors.initials: S
authors.lastname: Suh
authors.affiliation: c Department of Counseling Psychology , Yongmoon Graduate School of Counseling Psychology , Seoul , Korea.
authors.forename: Hae-Chung
authors.initials: HC
authors.lastname: Yang
authors.affiliation: d Division of Endocrinology, Department of Internal Medicine , Korea University Ansan Hospital , Ansan , Korea.
authors.forename: Nanhee
authors.initials: N
authors.lastname: Kim
authors.affiliation: d Division of Endocrinology, Department of Internal Medicine , Korea University Ansan Hospital , Ansan , Korea.
authors.forename: Ji Hee
authors.initials: JH
authors.lastname: Yu
authors.affiliation: e Department of Psychology , Duksung Women's University , Seoul , Korea.
authors.forename: Sungwon
authors.initials: S
authors.lastname: Choi
authors.affiliation: f Department of Neurology , Seoul National University Bundang Hospital , Seongnam , Korea.
authors.forename: Chang-Ho
authors.initials: CH
authors.lastname: Yun
authors.affiliation: a Department of Psychology , Sungshin Women's University , Seoul , Korea.|g Division of Pulmonary, Sleep and Critical Care Medicine, Department of Internal Medicine , Korea University Ansan Hospital , Ansan , Korea.
authors.forename: Chol
authors.initials: C
authors.lastname: Shin
mesh_terms: D002110:Caffeine / Q000008:administration & dosage; D002940:Circadian Rhythm / Q000502:physiology*; D004032:Diet / Q000706:statistics & numerical data; D015444:Exercise; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D012890:Sleep / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000453:epidemiology / Q000503:physiopathology; D011795:Surveys and Questionnaires; D014851:Wakefulness / Q000502:physiology
chemical_list: D002110:Caffeine