OBJECTIVE The current study investigated performance on a dual auditory task during a simulated night shift. BACKGROUND Night shifts and sleep deprivation negatively affect performance on vigilance-based tasks, but less is known about the effects on complex tasks. Because language processing is necessary for successful work performance, it is important to understand how it is affected by nigh...

BACKGROUND Previous studies on the association between shift or night work and weight change have been focused on finding the risk of weight gain caused by shift or night work. In this study, we aimed to reveal the risk of weight gain and weight loss associated with night work by using a nationwide representative data. METHODS This study was performed on 1605 full-time wage workers between th...

OBJECTIVE To estimate the association between night-shift work and high cardiovascular risk. METHODS Cross-sectional study carried out with 211 workers of both genders, aged between 30 and 64 years, working on the health campus of a public university in the state of Minas Gerais, Brazil. Night-shift work was defined as a work shift between 7 pm and 7 am, and high cardiovascular risk was calcu...

BACKGROUND Night shift work may disrupt the normal nocturnal rise in melatonin, resulting in increased breast cancer risk, possibly through increased reproductive hormone levels. We investigated whether night shift work is associated with decreased levels of urinary 6-sulfatoxymelatonin, the primary metabolite of melatonin, and increased urinary reproductive hormone levels. METHODS Participan...

ABSTRACT Abnormal working hours can reduce work health, general wellbeing, and productivity, independent from a profession. To inform future approaches for automatic stress and overload detection, this paper establishes empirically collected measures of the work patterns of software engineers. To this aim, we perform the first largescale study of software engineers’ working hours by investigati...

Synthesis of melatonin is regulated through visible light exposure, with peak production during the night. Melatonin regulates various physiological processes including secretion of other hormones, and has anticarcinogenic properties as demonstrated in animal and in vitro experiments. It has been suggested that night shift work (exposure to light at night) may disrupt circadian rhythm, and mela...

STUDY OBJECTIVES To study the adaptation and readaptation processes to 1 week of night work (6:30 PM to 6:30 AM) followed by 1 week of day work (6:30 AM to 6:30 PM). DESIGN Part of a randomized, placebo-controlled, crossover field study. Here, data from the placebo arm are presented. SETTING Oil rig in the North Sea. Work schedule: 2 weeks on a 12-hour shift, with the first week on the nigh...

Rotating night shift work disrupts circadian rhythms and is associated with coronary heart disease. The relation between rotating night shift work and ischemic stroke is unclear. The Nurses' Health Study, an ongoing cohort study of registered female nurses, assessed in 1988 the total number of years the nurses had worked rotating night shifts. The majority (69%) of stroke outcomes from 1988 to ...

The cardiovascular risks associated with night shift work in medical staff have been suspected for several years. Kawachi et al. analysed coronary heart disease (CHD) incidence in 79 109 women from the Nurses Health Study, and observed raised rates among night shift workers, particularly those who had worked for 6 years on rotating shifts (51% increased risk). Effects remained significant after...

Night shift work has been thought to play a role in the etiology of chronic diseases through a disruption of the circadian rhythm, decreased synthesis of melatonin and sleep deprivation. Our aim was to review the epidemiological studies on the association between night shift work and some pathologies in nurses and midwives. We reviewed publications available in the MEDLINE database and publishe...