Annals of Occupational and Environmental Medicine

Myung Sun Lee

4 Articles

Development of a Fatigue Symptom Checklist for Commercial Drivers: An Experimental Trial: Kyoung Ok Park, Myung Sun Lee, Sang Hyuk Jung, In Seok Kim, Young A Oh; Korean Journal of Occupational and Environmental Medicine 2004;16(3):287-302. Published online September 30, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.3.287

OBJECTIVES
Fatigue is a primary human factor for decreased job performance in the workplace. It is well documented that drowsiness is a typical symptom of fatigue and is closely associated with commercial drivers'safety and well-being. However, few studies have been conducted to develop or validate fatigue symptom instruments for a working population. The main purpose of this study was to develop a general fatigue checklist and a driving fatigue checklist for Korean commercial drivers.
METHODS
A total of 287 bus drivers in a commercial transportation company participated in a self-administered survey that was designated Study 1. Based on the statistical results of Study 1, a focus meeting with 16 professional consultants was conducted to revise the fatigue symptom instrument for Study 2. In Study 2, 288 commercial drivers (156 bus drivers and 132 truck drivers) participated in the revised questionnaire survey. All collected responses were entered into a SPSS worksheet and the data analysis was conducted using SPSS software 11.1. The exploratory factor analysis used in this study followed the principle component factoring rule and the varimax rotation method for factor extraction. The criteria for item selection were an Eigen value of 1.0 or greater, a communality score of .50 or greater, and no 'fence rider'property over the extracted factors.
RESULTS
Through Study 1, the consultant meeting, and Study 2, a general fatigue checklist was developed with a total of 3 factors and 11 items, and a driving fatigue checklist was developed with 2 factors and 10 items. The 3 factors of the general fatigue checklist were physical fatigue, psychological fatigue, and chronic tiredness. The two factors of the driving fatigue checklist were physical fatigue and perceptive and functional fatigue.
CONCLUSIONS
The primary contents of general fatigue were different from those of driving fatigue according to the two fatigue instrument factors developed in this study. The primary fatigue symptoms of the commercial driving population were identified as physical fatigue and perceptive and functional fatigue.

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Factors associated with different levels of daytime sleepiness among Korean construction drivers: a cross-sectional study
Yong Han Ahn, Sangeun Lee, Su Ryeon Kim, Jeeyeon Lim, So Jin Park, Sooyoung Kwon, Heejung Kim
BMC Public Health.2021;[Epub] CrossRef
Fatigue and poor sleep are associated with driving risk among Korean occupational drivers
Sooyoung Kwon, Heejung Kim, Gwang Suk Kim, Eunhee Cho
Journal of Transport & Health.2019; 14: 100572. CrossRef
Seafarers’ Quality of Life: Organizational Culture, Self-Efficacy, and Perceived Fatigue
Jae-hee Kim, Soong-nang Jang
International Journal of Environmental Research and Public Health.2018; 15(10): 2150. CrossRef
Economic Activities and Socioeconomic Status of Morbidly Obese Korean Adults
Hyun Ah Park, Jung Jin Cho
The Korean Journal of Obesity.2011; 20(4): 210. CrossRef

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Relationship between Manufacturing Workers'Job Conditions and Stress: Young A Oh, Myung Sun Lee, Kyung Yong Rhee; Korean Journal of Occupational and Environmental Medicine 2002;14(3):301-314. Published online September 30, 2002; DOI: https://doi.org/10.35371/kjoem.2002.14.3.301

Abstract PDF

OBJECTIVES
In this study we performed an analysis of the stress associated with the working conditions of 6,764 workers based on 'A survey of healthy condition of workers on 1999'by the Korean Occupational Safety and Health Agency. The Purpose of this study was to provide basic data for health education and management for industrial workers'health promotion.
METHODS
Collected data were analyzed using the t-test, ANOVA and multiple regression analysis, using the SPSS 10.0 program.
RESULTS
When the degrees of stress were analyzed according to demographic characteristics, females were found to have higher levels of stress than males (p<0.001). Furthermore, as age was lowered and as the work space became larger, the degrees of a stress were also found to be higher (p<0.001 and p<0.01, respectively). When the degrees of stress were analyzed according to working conditions, longer working hours (p<0.001) and reduced break times (p<0.05), gave rise to higher degrees of stress. Also, as the work space was reduced in size and as the work intensity was augmented, the degrees of a stress were made higher (p<0.01). In terms of physical working conditions, humidity and a lack of sense of security resulted in higher degrees of stress (p<0.01). When the workers sense that their environment is noisy or dusty has poor lighting or ventilation or that the rest room and cafeteria facilities are inadequate, the degrees of stress are found to be higher. As regards the social environment, when the workers sensed that the degree of job demand or job control was higher or that the degree of social support was lower, the degrees of stress were increased (p<0.001). Among those factors which influenced physical stress in the stepwise multiple regression analysis, the primary factor was found to be the safety of the working place (5.1 %). Other factors which influenced physical stress were degree of job demand, age, work intensity, humidity, sexual discrimination, length of working hours, size of work space and the existence or not of a regular break time in this order. Total R2 due to these factors was 12%. Among those factors which influenced mental stress in the stepwise multiple regression analysis, the primary factor was the degree of job demand (4.8 %). Other factors which influenced mental stress were humidity, age, sexual discrimination, the degree of a job control, safety of the working place, degree of social support, a working site, size of the work space, quality of lighting, the existence or not of a regular break time and length of working hours in this order. Total R2 due to these factors was 13.1 %.
CONCLUSIONS
The above results shows that working conditions are strongly related to stress. Furthermore, when both physical and social working conditions are continuously managed and improved, workers may not only reduce their levels of stress but also maximize their working efficiency.

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Impact of Indoor Green in Rest Space on Fatigue Recovery Among Manufacturing Workers
ChoHye Youn, LeeBom Chung, Minji Kang, Juyoung Lee
Journal of Environmental Science International.2024; 33(3): 217. CrossRef
Comparison of Occupational Health Providers' Perception on Workers' Health Promotion Program by Business Types: Focusing on Need, Necessity, Performance, Barriers, and Effectiveness of Program
Young-Im Kim, Bokim Lee
Korean Journal of Occupational Health Nursing.2016; 25(1): 29. CrossRef
A study of the psychosomatic self-reported symptoms of the dental technology students
Soon-Suk Kwon
Journal of Korean Acedemy of Dental Technology.2013; 35(2): 157. CrossRef
Job Stress of Occupational Health Managers in Chemicals Manufacturing Factories
Ki-Woong Kim, Jin Woo Park, Se Wook Song
Korean Journal of Occupational Health Nursing.2012; 21(3): 192. CrossRef
Relations between Fatigue and Work-related Factors in Workers
Eun Sook Jung, Nam Hyun Cha
Journal of Korean Academy of Community Health Nursing.2011; 22(4): 420. CrossRef
Analysis of the Related Factors on Job Satisfaction in Nursing Officers Using the Structural Equation Model
An-Sook Park, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2011; 12(10): 4502. CrossRef
Work-related Stress and Risk Factors among Korean Employees
Eun Sook Choi, Yeongmi Ha
Journal of Korean Academy of Nursing.2009; 39(4): 549. CrossRef

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Factors Affecting on Hospital Workers' Stress Symptom: Myung Ken Lee, Myung Sun Lee, Kyoung Ok Park; Korean Journal of Occupational and Environmental Medicine 1997;9(1):61-74. Published online February 28, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.1.61

Abstract PDF

Nowadays, stress is one of the most important factors that affect workers' chronic diseases. In the case of China, medical demands increased under the national health service system after the market economy was introduced. These socioeconomic changes have affected the hospital workers' stress in China. We surveyed 428 hospital workers in Jilin Province in China from March 18 to March 29, 1996. The results were as follows ; 1. There were more women(67.8%) than men(31.1%) and those who graduated from technical school were 54.2%. The workers whose monthly income ranged from 400 to 499 Yuen were 37.9% by Chinese currency. For occupational characteristics, there were 36.4% doctors and 30.1% were nurses among the hospital workers. 29.9% had worked for 10~20 years in the hospital and 80.1% said their workload was moderate. 25.9% were satisfied with their jobs and 33.2% had good relationships with superiors and 37.4% had good relationships with co-workers. 2. For health habits, 22.7% were current smokers and 51.2% were scarcely drank. among this subjects. Those who ate breakfast almost everyday were 87.1% and the workers who ate between meals almost everyday were 50.2%. 83.8% slept for 7~8 hours at night. Only 14.0% of the workers exercised regularly were only 14.0% and 18.5% were obese. 3. Hospital workers' stress symptom was significantly related to age and monthly income. The workers who were 19 years old or less or 40 years old or more and had higher monthly income showed higher stress symptoms than those who were between 20-39 and had lower monthly income. Higher stress symptom was also significantly related to the heavy workload, the dissatisfaction with their job an4 the bad relationship with their superiors and co-workers. 4. Higher stress symptoms were significantly related to drinking and hours of sleep among the seven health habits. The more frequently the workers' drank, the higher the stress symptoms were and the workers who slept for 7~8 hours at night had lower stress symptoms than those who slept for 6 hours or less or 9 hours or more. 5. According to the results of stepwise multiple regression analysis, the factors affecting hospital workers' stress symptoms were monthly income in personal characteristics (R2=0.0227), job satisfaction and workload (R2=0.0742) in occupational characteristics, and drinking and hours of sleep (R2=0.0446) among the seven health habits. Consequently, the most significant factors that had affected hospital workers' stress symptom in China, were job satisfaction and drinking according to the premises of the questionnaire.

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The connection of police strategies for coping with workplace problems to stress in two countries
Merry Morash, Seok Jin Jeong, Robin N. Haarr, Vincent Hoffman
International Journal of Comparative and Applied Criminal Justice.2011; 35(2): 89. CrossRef
Effect Factors on Health Promotion Lifestyle of Shift Work Nurses
Young-Im Kim
Korean Journal of Occupational Health Nursing.2011; 20(3): 356. CrossRef
Psycho-Social Well-being, Health Perception and Behavior among Clinical Nurses
Jeong-Hee Kim, Mi Yeul Hyun, Young Soon Kim, Jung Sil Kim, Sang Ok Nam, Man Sook Song, Jung Wha Lee, Na Ju Lee
Journal of Korean Academy of Nursing Administration.2010; 16(1): 26. CrossRef
Stressors, coping resources and strategies, and police stress in South Korea
Merry Morash, Dae-Hoon Kwak, Vincent Hoffman, Chang Hun Lee, Sun Ho Cho, Byongook Moon
Journal of Criminal Justice.2008; 36(3): 231. CrossRef
Psychosocial work environments and psychological strain among Korean factory workers
Kyoung‐Ok Park, Mark G. Wilson
Stress and Health.2003; 19(3): 173. CrossRef

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A Study on the Industrial Accident of Steel Workers: Young Hahn Moon, Jaehoon Roh, Dongchun Shin, Myung Sun Lee, Soo Nam Cho; Korean Journal of Occupational and Environmental Medicine 1989;1(1):61-68. Published online February 28, 1989; DOI: https://doi.org/10.35371/kjoem.1989.1.1.61

Abstract PDF: To investigate the relationship between physical health of workers and industrial accidents, a case-control study was carried out using matched samples of 87 injured steel industry workers and 87 non-injured steel industry workers. One group of people who experienced industrial accidents more than two times were case, and the other group of people who matched the type of work and duration of employment were control. We surveyed questionnaire between July 20, 1988 and July 22, 1988. The results were as follows: 1. The average age of injured workers was 39 years, and non-injured workers was 38 years. Duration of employment of injured workers was 8.4 years and non-injured workers was 8 years. 2. Visual acuity under 1.0 were 24.4 percent in injured workers and 19.5 percent in non-injured workers. Hearing threshold over 40 dB were 77.1 percent in injured workers and 60.9 percent in non-injured workers. 3. As for the Fugamachi classification method, 22.9 percent of injured workers and 20.8 percent of non-injured workers were group III(suspected neurotics). 4. As for the item of CMI(Cornell Medical Index), injured workers were higher rates than non-injured workers in the item of C(cardiovascular system), M(inadequency), O(anxiety), P(sensitivity), Q(anger), and R(tension). 5. Especially, injured workers who had more than three times were higher in the item of C(cardiovascular system), M(inadequency), N(depression), P(sensitivity), Q(anger), R(tension) than non-injured workers.

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