Diurnal preference (chronotype) is a useful instrument for studying circadian biology in humans. It harbours trait-like dimensions relating to circadian period and sleep homeostasis, but also has ontogenetic components (morningness increases with age). We used the Morningness-Eveningness questionnaire (MEQ) in the Baependi study, a family-based cohort study based in a small town in Minas Gerais...

AIMS/INTRODUCTION 'Morningness' and 'eveningness' represent the sleep-wake patterns of the circadian rhythm might also affect glycemic control in patients with type 2 diabetes. The aim of this study was to examine the relationship between the morningness-eveningness trait and metabolic parameters. MATERIALS AND METHODS The study participants comprised 101 Japanese male workers with type 2 dia...

The Composite Scale of Morningness (CSM) is a self-report measure circadian preference that related with one’s physical and mental health. This study aimed to explore the psychometric properties Bangla version CSM validate it sleep habits, BRUnel Mood (BRUMS) Positive Mental Health (PMH-scale). sample consisted 1164 (38.8% women) Bangladeshi university students aged between 18 27 (M = 21.9, SD ...

We examined the relationship between dissociative experiences as indexed by the Dissociative Experiences Scale (DES; Bernstein & Putnam, 1986) and sleep-related experiences (e.g., nightmares, recurring dreams) as measured by the Iowa Sleep Experience Survey (ISES; Watson, 2001) in an undergraduate sample (N 1⁄4 94). In addition, we studied the link between dissociative experiences and sleeping ...

BACKGROUND Rhythm disturbances are a frequent clinical manifestation of depression. In recent years a possible relationship between depression and chronotypes has emerged. Specifically eveningness has been proposed as vulnerability factor. The aim of this study was to describe sleep features of depressed patients according to chronotypes and to explore possible associations with the clinical fe...

The impact of diurnal preferences on health-related behaviors is acknowledged but relatively understudied. The aim of this study was threefold: (1) testing the measurement model of the Hungarian version of the reduced Horne-Östberg Morningness-Eveningness Questionnaire (Hungarian Version of the rMEQ); (2) estimating chronotypes and their prevalence; and (3) analyzing the relationship between mo...

Associations of eveningness with health hazards benefit from analyzing to what extent the polygenic score for morningness correlates assessments behavioral trait morningness-eveningness and chronotype. With a population-based sample 17,243 Finnish adults, aged 25–74 years, this study examines associations four feasible assessment methods chronotype, a) biological genetic liability based on (PGS...

The objective of this study was to evaluate the alterations in sleep and circadian parameters during the aging process. The study sample comprises volunteers older than 18 up to 90 years of age that answered the Pittsburgh Sleep Quality Index (PSQI) and the Horne and Östberg circadian preference questionnaire. We observed that the shift to morningness with increasing age is associated with a si...

background and objective : morningness–eveningness (me) refers to the individual differences in diurnal inclination, sleep-wake pattern for activity, and vigilance in the morning and evening. quantitative and qualitative components of sleep can be measured through its quality. this study aimed to evaluate the association of me chronotype with sleep quality and insomnia in students. materials an...