• Sleep Medicine and Psychophysiology
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• v.6 no.1
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• pp.68-75
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• 1999

Objectives: We intended to observe changes in sleep patterns and mood states of night-shift workers following light exposure. We also estimated the degree of tolerance of light exposure. By studying these, we investigated the possibility of applying light therapy to night-shift workers for improving their adaptation. Methods: Twelve night-shift nurses working at Yong-In Mental Hospital volunteered to participate in this study. The study consisted of 3 parts: 1) night-shift control study; 2) light exposure study; 3) day-shift control study. All the nurses accomplished 3 parts of the study, each of which continued for 3 days, except one nurse who did not participate in day-shift control study. During light exposure study, nurses were exposed to bright light for 4 hours from 1AM to 5AM. Sleep patterns were evaluated with wrist actigraphy and automatic sleep analysis program. Mood states and side effects of light exposure were assessed with self-report scales. Results: Sleep period time, total sleep time, and sleep efficiency were increased following light exposure compared with night-shift control study. Light exposure study showed no difference from day-shift control study in above-mentioned sleep parameters. Daily fluctuation of sleep efficiency was less prominent during light exposure study than during night-shift control study. During light exposure study, the subjects felt more elated and energetic in the evening after daytime sleep than during night-shift control study. None of the subjects complained of severe side effects related to light exposure on the third day of light exposure. Tolerance of side effects was noted to develop with the repetition of light exposure. Conclusion: Light exposure improved the daytime sleep of night-shift workers to the level of normal nighttime sleep, making the subjects more elated and energetic. Side effects of light exposure were found to be tolerable. Light exposure seems to be safely applicable to night-shift workers for their adaptation.

• Proceedings of the ESK Conference
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• 1997.10a
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• pp.186-195
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• 1997

본 연구에서는 교대근무를 시행하는 사업장을 조사아여 교대 분류방법에 의해 교대제의 명확한 분류 와 국내의 교대제 적용업체의 편성상의 문제점을 파악하고 개선안을 제시하며, 문제점과 편성의 성격에 따을 스트레스의 정도를 분석하고자 하였다. 교대제는 크게 비심야 교대제, 심야 교대제, 휴일이 있는 종일 교대제, 휴일이 없는 종일 교대제로 나누어 진다. 마산, 창원 지역의 교대제는 휴일이 있는 종일 교대제를 가장 많이 취하고 있었으며, 전반적인 문제점으로는 휴일이 없는 교대제가 존재하며, 야근 연 속 일수가 4일 이상으로 길고, 생체리듬의 길어지는 특성에맞지 않는 역순환이 존재하며 휴일이 없는 종 일 교대제에서 야간 근무에서 주간근무로 근무간격시간이 짧다는 여러 가지 문제점을 가지고 있다. 편성 상의 문제점과 성격에 의한 SACL의 분석에서장시간 근무하는 12시간 2교대 보다 8시간 정상 근무하는 3교대 의 스트레스가 낮고, 야근 연속일 수는 5일 이하인 경우의 스트레스가 제일 낮았고, 휴일은 있는 경우가 높았다. 연령별로는 40대에서 교대제 편성상에따른 프트레스 점수간 차이를 보였지만 다른 연령대에서는 차이를 보이지 않았다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.3
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• pp.1126-1132
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• 2010

The purpose of this research was to analyze the health promotion behavior of shifting nurses' and its effects on their health conditions. The survey was performed for 357 nurses who worked in general hospital during July 2006. The results for behavior of health promotion and health conditions were as follow; Better health conditions of shifting nurses' on the aspects of physical status, the younger age, a fewer night duties in a month, more regular menstruation cycles and married rather than un-married, they were in better health conditions(p<0.05). In conclusion, in spite of shift works, the efforts for health promotions improved health conditions. It is necessary to set up the systems for minimizing obstacles of health promotions.

• Sleep Medicine and Psychophysiology
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• v.9 no.1
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• pp.41-47
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• 2002

Objectives: In a number of simulated night shift studies, timed exposure to bright light improves sleep quality and work performance. We evaluated the effect of bright light on adaptation to night shift work with a field study. Methods: Five female nurses working shifts at Korea University Hospital were recruited for participation in this study. We investigated two series of six consecutive shift rotations comprising three day and three night shifts, using wrist Actigraphy, the Stanford Sleepiness Scale, Visual-analogue scales, STIM and tympanic membrane temperature for daytime sleep quality, alertness, subjective feeling, attention performance, and temperature rhythm. The subjects were exposed to bright light (2,500 lux) from 24:00 to 04:00 a.m. on three consecutive night shifts during the second series, whereas they worked under normal lightening (650 lux) conditions during the first series. Results: Actigraphic assessment of daytime sleep showed no significant difference between the first and third night shift in both baseline and light exposure phase. The mean lowest temperature shifted earlier during baseline phase but not during the light exposure phase. Also, the score for subjective feelings of depression, anxiety, physical discomfort and sleepiness was significantly higher in the third night shift than the first during baseline phase but not during the light exposure phase. Attention and attention switching ability was significantly improved in the third night shift compared to the first night during the light exposure phase but there were no significant changes during the baseline phase. Conclusion: This result suggests that there were no significant differences between the two phases in measures of quality of daytime sleep, but subjective feelings, attention and alertness were enhanced during light exposure. Although some placebo effects and learning effects might influence this result, bright light exposure between midnight and 4:00 a.m. may improve adaptation to night shift. In future, further controlled studies with a larger sample size, including melatonin measurement, are needed for real shift workers.

• KOREAN ASSOCIATION OF OCCUPATIONAL HEALTH NURSES
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• v.10 no.1 s.34
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• pp.13-14
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• 2003

• 월간산업보건
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• s.274
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• pp.38-42
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• 2011

• The Safety technology
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• no.103
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• pp.30-31
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• 2006

• Journal of the Korea Convergence Society
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• v.12 no.7
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• pp.295-304
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• 2021

This study is a secondary data analysis to investigate the nursing tasks performance, appropriate performer, and job satisfaction in the general wards with sift work. We found that nurses performed direct (45%) and indirect nursing (55%). The workload per shift was 37.2% in the day, 35.6% in the evening, and 27.2% at night. The tasks performed after handover were 'direct nursing (34.5%)' and 'documentation and notification (25.8%)'. Nurses responded that there were some tasks that could be delegated to nursing assistants or had ambiguous boundaries with other medical personnel. There was a significant correlation between compliance to the job description of the night shift and job satisfaction (rs=.43, p=.01). These results imply that it is necessary to establish strategies that will enhance work efficiency based on job analysis by shift work, reduce handover time using EMR system, stmart devices, and clarify appropriate performers.

• Journal of Korean Clinical Nursing Research
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• v.23 no.1
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• pp.54-63
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• 2017

Purpose: The purpose of this study was to compare the working status and Standard Shiftwork Index (SSI) between night shift-fixed nurses and rotating shift nurses. Methods: Participants were 367 nurses working as registered nurses at 7 different medical institutions. The data were collected from August 8, 2016 to September 30, 2016. Results: Night shift fixed nurses were more satisfied with work schedule than rotating shift nurses. Rotating shift nurses reported higher SSI scores, such as chronic fatigue, musculoskeletal problems, than night shift fixed nurses. In SSI's sub-items, rotating shift nurses reported higher scores, such as the amount of sleep, feeling well after sleep, heartburn or stomach-ache and heartbeat irregularities, than night shift fixed nurses. Conclusion: The results indicated that night shift fixed system might be an effective method to improve nurses' work satisfaction. It is necessary to figure out any suitable night shift fixed system based on the characteristics of each nursing organization. The SSI might be an useful tool to measure the nurses' satisfaction in reference to their work shift.

• Journal of Advanced Navigation Technology
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• v.23 no.6
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• pp.501-506
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• 2019

This paper presents a prescriptive alternative for establishing a FRMS suitable for us based on scientific data ahead of the introduction and implementation of the FRMS for air traffic controllers in order to meet the International Civil Aviation Organization (ICAO) international standards. I would like to present. Therefore, we confirmed the operation of each air traffic control agency against the current domestic operating standards, and compared and reviewed the operation methods and standards of air traffic control agencies in each country. The controller in Korea defines 10 hours of working hours per day, 8 hours of minimum breaks, and 40 hours per week. Currently, in the case of air traffic control agencies, the daytime and the appropriate working hours are used in the daytime, but in the nighttime, the average time exceeds 5.9 hours. In the case of 40 hours a week, they work an average of 15.7 hours overtime. By adjusting the nighttime work time, this work can be solved by diversifying the form of the worker's input method according to the personal schedule rather than the two-day (day / night) method, as well as the appropriate nighttime time distribution by supplementing the personnel.