نتایج جستجو برای: night shift

تعداد نتایج: 168385  

Journal: :Neuroscience letters 2005
Nayantara Santhi Jeanne F Duffy Todd S Horowitz Charles A Czeisler

Shift work results in a misalignment between circadian timing and the sleep/wake schedule, leading to irregular and poor quality sleep. Inconsistent input from the daily light cycle further interferes with circadian entrainment. It has been hypothesized that scheduling the sleep/dark cycle on the night shift could aid in promoting adaptation to night shift work by facilitating appropriate phase...

Journal: :Industrial health 2004
Misuzu Watanabe Yasuhiro Akamatsu Hikari Furui Teruyuki Tomita Takemasa Watanabe Fumio Kobayashi

To clarify the effects of changing shift schedules from a full-day to a half-day before a night shift, 12 single nurses and 18 married nurses with children that engaged in night shift work in a Japanese hospital were investigated. Subjects worked 2 different shift patterns consisting of a night shift after a half-day shift (HF-N) and a night shift after a day shift (D-N). Physical activity leve...

ژورنال: سلامت کار ایران 2009

Background and aims Some social systems if necessary 'are obliged to recruit their personnel in rotation shifts.on the other hand working rotatedly disrupts persons biological rhythms and this may cause some disorders in their body physiology and make tobe affected to physical 'psychological'and social disorders.so'this research is accomplished to determin the level of serum cortisol and aldest...

2016
Tae Heum Chung Jiho Lee Moon Chan Kim

PURPOSE Whether night-shift work is a risk factor for gastroesophageal reflux disease is controversial. The aim of this study was to investigate the association between night-shift work and other factors, and erosive esophagitis. METHODS A cross-sectional study with 6040 male shipyard workers was performed. Esophagogastroduodenoscopic examination and a survey about night-shift work status, li...

2013
Shadab A. Rahman Colin M. Shapiro Flora Wang Hailey Ainlay Syeda Kazmi Theodore J. Brown Robert F. Casper

Circadian phase resetting is sensitive to visual short wavelengths (450-480 nm). Selectively filtering this range of wavelengths may reduce circadian misalignment and sleep impairment during irregular light-dark schedules associated with shiftwork. We examined the effects of filtering short wavelengths (<480 nm) during night shifts on sleep and performance in nine nurses (five females and four ...

2013
Parveen Bhatti Dana K. Mirick Scott Davis

Reduced suppression of melatonin in response to working the night shift among people of Asian ancestry has been suggested as a possible explanation for the null results observed in a recent analysis of shift work and breast cancer risk in a Chinese cohort. The authors analyzed the impact of Asian versus white race on previously reported differences in urinary 6-sulfatoxymelatonin levels in a 20...

Journal: :razavi international journal of medicine 0
mohammadhassan arjmand phd candidate of medical biochemistry, department of biochemistry, faculty of medicine, mashhad university of medical sciences, mashhad, iran majid ghayour-mobarhan biochemistry of nutrition research center, school of medicine, mashhad university of medical sciences, mashhad, iran fatemeh tara department of obstetrics and gynecology, om-albanin hospital, mashhad university of medical sciences, mashhad, iran hami ashraf razavi cancer research center, research and education department, razavi hospital, mashhad, iran; razavi cancer research center, research and education department, razavi hospital, mashhad, iran daryoush hamidi alamdari surgical oncology research center, imam reza hospital, faculty of medicine, mashhad university of medical sciences, mashhad, iran

results a significant higher serum pab value was observed in shift working and daytime nurses (152.28 ± 43.64 hk) in comparison to the control group (63.64 ± 34.41 hk index), p value = 0.001. in day time nurses, also serum pab between male (119.09 ± 47.14 hk) and female (162.53 ± 37.02 hk) in nursing workers was significant, p value = 0.005. in the night shift working nurses, there was also a s...

Journal: :American journal of epidemiology 2013
Parveen Bhatti Dana K Mirick Scott Davis

Reduced suppression of melatonin in response to working the night shift among people of Asian ancestry has been suggested as a possible explanation for the null results observed in a recent analysis of shift work and breast cancer risk in a Chinese cohort. The authors analyzed the impact of Asian versus white race on previously reported differences in urinary 6-sulfatoxymelatonin levels in a 20...

Background & Objective: Sleepiness and the trend of changes of vital signs are important factors affecting the quality of work of hospital staff. The purpose of this study was to investigate the relationship between sleepiness with physiological changes and vital signs in night shift workers in rehabilitation staff. Methods: This study was a cross-sectional study, performed on night shift pers...

Journal: :Medycyna pracy 2013
Agnieszka Bukowska Beata Pepłońska

Prolactin - a hormone secreted in a circadian rhythm acts as a regulator of growth and development of the mammary glands. It has been observed that working at night increases breast cancer risk in women. Night shift work, probably carcinogenic to humans (Group 2A IARC), can disrupt a circadian rhythm, and thus potentially alter the rhythm of prolactin secretion. The aim of our work was to revie...

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