STUDY OBJECTIVES Most studies of sleepy driving have been carried out in driving simulators. A few studies of real driving are available, but these have used only a few sleepiness indicators. The purpose of the present study was to characterize sleepiness in several indicators during real driving at night, compared with daytime driving. DESIGN Participants drove 55 km (at 90 km/h) on a 9-m-wi...

Sleepiness is a widespread phenomenon in the busy industrial countries, and many studies have identified its significant negative impacts on individuals and society. Particularly important are the data that associate sleepiness with the risk of accidents at workplace and in transport, pointing to shift workers as the most vulnerable population. It is generally accepted that two basic physiologi...

The present study examined the occurrence of sleepiness in various shift combinations ending with a night or morning shift. Three weeks' sleep/work shift diary data, collected from 126 randomly selected train drivers and 104 traffic controllers, were used in statistical analyses. The occurrence of sleepiness at work (i.e., Karolinska Sleepiness Scale 7 or higher) was tested with a generalised l...

BACKGROUND Truck driver sleepiness is a primary cause of vehicle accidents. Several causes are associated with sleepiness in truck drivers. Obesity and metabolic syndrome (MetS) are associated with sleep disorders and with primary risk factors for cardiovascular diseases (CVD). We analyzed the relationship between these conditions and prevalence of sleepiness in truck drivers. METHODS We anal...

introduction: sleepiness may predispose drivers to road traffic accidents. obstructive sleep apnea syndrome is the most common medical cause of sleepiness. hence increased neck circumference (nc) and obesity are known as obstructive sleep apnea syndrome risk factors. this study was conducted to assess osas role in occurrence of road traffic accidents in sleeping drivers of commercial heavy vehi...

Increased sleepiness at work is increasingly being focused on as a safety and health issue. However, research on workers' sleepiness is very limited in scope and the characteristics of work organization, including the impact of job stress, have not been fully addressed. A questionnaire survey was conducted to investigate the prevalence of daytime sleepiness and its associated factors among non-...

We investigated the role of daytime sleepiness and sleep quality in psychosocial outcomes of patients with obstructive sleep apnea (OSA) treated with continuous positive airway pressure (CPAP). Thirty-seven individuals with moderate to severe OSA and compliant with CPAP treatment for at least 3 months were compared to 27 age- and education-matched healthy controls. The OSA group and the control...

STUDY OBJECTIVES To better understand the relationships of insomnia, sleepiness, and obesity. DESIGN Classic twin study. SETTING A community-based twin registry in Washington State. PATIENTS OR PARTICIPANTS One thousand forty-two monozygotic and 828 dizygotic twin pairs participating in the University of Washington Twin Registry. INTERVENTIONS N/A. MEASUREMENTS AND RESULTS Twins were,...

BACKGROUND Excessive daytime sleepiness may be determined by a number of factors including personal characteristics, co-morbidities and socio-economic conditions. In this study we identified factors associated with excessive daytime sleepiness in 2 First Nation communities in rural Saskatchewan. METHODS Data for this study were from a 2012-13 baseline assessment of the First Nations Lung Heal...

Prevention of road crashes is a major priority in most countries. The present thesis focuses on driver sleepiness and road crashes. The general aim of the thesis was to explore the relation between driver sleepiness and driver impairment and the changes that precede a crash or a similar safety-critical event, but also what constitutes good reliable behavioural / physiological measures of sleepi...