STUDY OBJECTIVES Sleep duration and alcohol use influence metabolic function. However, limited information exists regarding a combined effect of alcohol and sleep duration on glucose metabolism. The aim of this study was to assess the potential interaction effect of alcohol and inappropriate sleep duration on dysglycemia epidemiologically. DESIGN Cross-sectional and observational retrospectiv...

OBJECTIVE Few studies are currently available regarding the influence of sleep duration on glycemic control in diabetic patients. The objective of the current study was to examine the relationship between sleep duration, obesity, and the glycemic level in type 2 diabetic patients. RESEARCH DESIGN AND METHODS A total of 4,870 Japanese type 2 diabetic patients aged ≥20 years were divided into s...

OBJECTIVE To examine the associations between occupation, sleep duration and sleep quality. METHODS The data for this study was extracted from data collected from the 2008 Chinese Sub-optimal Health Study. Our study sample consisted of 18,316 Chinese subjects aged 18-65. Occupation and other relevant characteristics to sleep were collected. We used the Pittsburgh Sleep Quality Index (PSQI) to...

OBJECTIVE This study aimed to investigate the prevalence and factors associated with short sleep duration in adolescents from Maravilha - Santa Catarina (SC), southern Brazil. METHODS The sample consisted of 516 adolescents aged 10-19 years of both genders. Issues associated with short sleep duration and difficulty falling asleep, chronotype, daytime sleepi-ness, physical activity, sedentary ...

OBJECTIVE Short sleep duration has been associated with higher current BMI and subsequent weight gain. However, most prior longitudinal studies are limited by reliance on self-reported sleep duration, and none accounted for the potential confounding effect of sleep-disordered breathing. The associations of sleep duration with current BMI and BMI change were examined among 310 midlife women in t...

Within their carefully executed and interpreted study, Girschik et al. (1) investigated the relationship between incident breast cancer and the self-reported duration and/or quality of sleep in Western Australian women. The authors concluded that sleep duration and/or quality are not associated with breast cancer risks significantly above or below the null. With this letter, I would like to rei...

Most recommendations are that adults should obtain 7-8 hours of sleep per night, although there are individual differences in self-reported sleep need. Chronotype (preference for early or late sleep timing), in combination with social demands, may affect the ability to obtain adequate sleep. This questionnaire study assessed perceived sleep need and self-reported sleep timing and duration durin...