Annals of Occupational and Environmental Medicine

Mi A Son

4 Articles

Risk Factors of Work-related Musculoskeletal Symptoms Among Ship-yard Workers: Jong Eun Kim, Dong Mug Kang, Yong Chul Shin, Mi A Son, Jung Won Kim, Jin Hong Ahn, Young Ki Kim, Deog Hwan Moon; Korean Journal of Occupational and Environmental Medicine 2003;15(4):401-410. Published online December 31, 2003; DOI: https://doi.org/10.35371/kjoem.2003.15.4.401

OBJECTS: This study was conducted to prepare the primitive data of work-related musculoskeletal disorders (WMSDs) among ship-yard workers in order to set up management and prevention strategies by investigating the risk factors for WMSD symptoms.
METHODS
We carried out a self-administered questionnaire survey of 7,237 blue-collar workers during October 2001, in a ship-yard of Kyungsangnam Province. We collected 2,223 questionnaires and analysed 1,985. The questionnaires included demographic data, quick exposure check (QEC) for ergonomic risk factors, and Karasek's job content questionnaires (JCQ) for job stress. WMSDs were evaluated by the National Institute of Occupational Safety and Health (NIOSH) surveillance criteria.
RESULTS
Multiple logistic regression analysis was used to examine the relationship between risk factors and musculoskeletal symptoms. From the results, significant variables were age, maximum weight of manual handling material, frequency of the back movement during manual handling tasks, deviation or bending of the wrists/hands position, excessively bent or twisted head/neck, job dissatisfaction, and high job demand.
CONCLUSIONS
In order to reduce musculoskeletal disorders of ship-yard workers, it is recommended to reduce the frequency of back movement during manual handling tasks, wrists/hand deviation or bending, and neck bending or twisting. In addition, devoted effort is needed to increase job satisfaction and to reduce job demand.

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Research in Community and Public Health Nursing.2023; 34: 22. CrossRef
Musculoskeletal Disorder Symptoms and Its Related Factors among Male Workers in Manufacturing Industries
Seung-Hyun Lee, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2015; 16(10): 6627. CrossRef
The Study of Muscle Fatigue and Risks of Musculoskeletal System Disorders from Text Inputting on a Smartphone
Kyung Ko, Hee-Soo Kim, Ji-Hea Woo
Journal of the Ergonomics Society of Korea.2013; 32(3): 273. CrossRef
Medical Managements of Musculoskeletal Diseases in Shipbuilding Industry
Jong-Eun Kim, Young-Ki Kim, Dong-Mug Kang
Journal of the Ergonomics Society of Korea.2012; 31(1): 157. CrossRef
Musculoskeletal Disorder Symptoms and Related Factors among Male Workers in Small-scale Manufacturing Industries
Seung-Hyun Lee, Ju-Yeon Lee, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(9): 4025. CrossRef
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Yong-Ku Kong, Jun-Goo Han
Journal of the Ergonomics Society of Korea.2011; 30(2): 297. CrossRef

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Effect of Shift Work on Worker's Health, Family and Social Life at a Automobile Manufacturing Plant: Hyungjoon Chun, Mi A Son, Yongchul Kim, Eunyeon Cho, Jiyong Kim, Domyung Paek; Korean Journal of Occupational and Environmental Medicine 1998;10(4):587-598. Published online December 31, 1998; DOI: https://doi.org/10.35371/kjoem.1998.10.4.587

Abstract PDF

Effect of shift work on worker's health, family and social life was investigated at a automobile manufacturing plant in Inchon. In total, 2488 shift workers and 599 non-shift workers completed self administered questionnaire in their sleep pattern, subjective gastrointestinal symptoms, prevalent chronic disease status, general well-being schedule, family and social life. More shift workers complained of sleep disturbance, poor sleep quality, tiredness at awakening, and sleepiness in work than non-shift workers. More shift workers also complained of gastrointestinal disturbance than non-shift workers. Worker's mental health was assessed by General Well-Being Schedule(GWB) questionnaire developed for the U.S. Health and Nutrition Examination Surveys(HANES I). The percentage of severely distressed shift workers was significantly higher than that of non-shift workers(p<0.01). Among subscores in General Well-Being Schedule, anxiety, depression, positive well-being, vitality, and general health subscale of shift workers were lower than those of non-shift workers (p<0.05). In terms of family and social life, there was no significant difference between two groups. Multiple logistic regression analysis was done for discrete variables which showed statistically significant difference between shift and non-shift group. The variables included in analysis were sleep disturbance symptoms, gastrointestinal complaints, and distress level calculated from GWB score. Age, tenure, smoking, alcohol drinking, and exercise were adjusted as confounding factors and odds ratios for above symptoms due to shift work were calculated. Odds ratios (ORs) for sleep disturbance symptoms ranged from 0.52 to 3.59. ORs for gastrointestinal complaints ranged from 1.19 to 1.34. OR for distress level was 1.31. We concluded that shift workers are suffered from physical and psychological ailments due to shift work and interventional methods for preventing worker's health from adverse effects of shift work are needed.

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Study on Health Consciousness and Eating Habits of Workers at Deluxe Hotels in Seoul and Gyonggi-do regions
Jae Joong Kim, Eun Jung Lee, Kyung-Ran Lee
Journal of The Korean Society of Food Culture.2016; 31(6): 587. CrossRef
The association between shift work and depression in hotel workers
Hyun Jey Moon, Sang Hyun Lee, Hee Sung Lee, Kyung-Jae Lee, Joo Ja Kim
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Influence of shift work in process industry on workers' occupational health, productivity, and family and social life: An ergonomic approach
Kishor K. Dhande, Sunil Sharma
Human Factors and Ergonomics in Manufacturing & Service Industries.2011; 21(3): 260. CrossRef

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Prevalence of Asbestosis in Korean Asbestos Industry: Do myung Paek, Nam Won Paik, Jung Deun Choi, Mi A Son, Jung Gi Im, Won Jin Lee, Young Hahn Moon, Jung Sun Park, Byung Soon Choi; Korean Journal of Occupational and Environmental Medicine 1995;7(1):46-57. Published online February 28, 1995; DOI: https://doi.org/10.35371/kjoem.1995.7.1.46

Abstract PDF

Asbestos industry has been in operation over 60 years in Korea. However, the prevalence of asbestosis has not been yet reported. With rapid turn-over of workers, previous cross-sectional studies of current workers on the job could not find cases with exposures long enough for the development of asbestosis. This study was done to evaluate asbestosis prevalence of those worksites with operation history of more than 20 years. In total, 139 workers from 5 worksites were examined. Asbestos industries covered in the study include 2 asbestos textile, 1 brake lining, and 2 ship repairing worksites. Chest x-ray was taken from all workers and read by two exports familiar with pneumoconiosis classification according to 1980 ILO guidelines. Those with findings compatible with asbestosis were further checked with high resolution computerized tomography (HRCT). Pulmonary function tests were done according to ATS guidelines, and occupational and previous medical history was taken through a standardized interview. Air-borne asbestos was measured according to NI0SH method 7400. The air-borno asbestos concentrations ranged from 0.2-1.3 f/cc for asbestos textile, from 0.7~l.0 f/cc for brake lining, and from 6.3-7.8 f/cc during asbestos removal at ship repairing worksite. Of the 139 workers 25 had abnormal chest radiographic findings, and 10 of them had findings compatible with pneumoconiosis. When work history and current asbestos measurements were accounted, 9 workers who had more than 10 years of asbestos exposure history showed chest radiographic findings of pneumoconiosis with Finally, 4 workers showed finding of pulmonary fibrosis and/or pleural thickening at HRCT, and 2 of them had restrictive lung function changes. The study results showed that, among 139 sutjects, there were 4 (3%) definite asbeatosis cases confirmed with HRCT. The prevalence of probable asbestosis was 7% for 10-14 years of exposure, 13% for 15-19 years of exposure, and 23% for 20 or more years of exposure. The prevalence of compensable asbestosis with abnormal lung function was 4-6% for those with 15 or more years of exposure.

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Science of The Total Environment.2023; 881: 163456. CrossRef
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American Journal of Industrial Medicine.2012; 55(10): 869. CrossRef
Comparison of cancer incidence between production and office workers at a shipyard in Korea: A retrospective cohort study from 1992 to 2005
Kyoung‐Sook Jeong, Yangho Kim, Moon‐Chan Kim, Cheol‐In Yoo
American Journal of Industrial Medicine.2011; 54(9): 719. CrossRef
Occupational and Environmental Asbestos Exposure in Korea
Jung-Wan Koo, Hyoung Ryoul Kim
Journal of the Korean Medical Association.2009; 52(5): 442. CrossRef
Overview of Asbestos Issues in Korea
Hyoung Ryoul Kim
Journal of Korean Medical Science.2009; 24(3): 363. CrossRef
Compensation and Diagnosis of Asbestos Related Disease
Soo-Geun Kim
Korean Journal of Family Medicine.2009; 30(5): 335. CrossRef
Asbestos-related Diseases among Asbestos Textile Factory Workers and Residents Around the Factory
Dong-Mug Kang, Dong-Chul Gu, Kun-Hyung Kim
Journal of the Korean Medical Association.2009; 52(5): 482. CrossRef
Asbestos Problems Yet to Explode in Korea
Domyung Paek
International Journal of Occupational and Environmental Health.2003; 9(3): 266. CrossRef
The Effect of Silica Dust on Ventilatory Function of Foundry Workers
Jung Wan Koo, Chee Kyung Chung, Chung Yill Park, Se‐Hoon Lee, Kang‐Sook Lee, Young‐Man Roh, Hyeon Woo Yim
Journal of Occupational Health.2000; 42(5): 251. CrossRef
Asbestos and non-asbestos fiber content in lungs of Korean subjects with no known occupational asbestos exposure history
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Environment International.1998; 24(3): 293. CrossRef

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Lung Function Test for Workers and its Quality Control Program: Jung Keun Choi, Mi A Son, Hyun Kyung Kim, Domyung Paek, Byung Soon Choi; Korean Journal of Occupational and Environmental Medicine 1994;6(2):187-200. Published online September 30, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.2.187

Abstract PDF: Lung function test can be influenced by technical as well as biological variables, and the quality control of test has been stressed as an important part of lung function test program. This study was done to survey the current status of lung function test program in workers' health examination, and examine the variablity of test results when quality control is not achieved. Forty nine Workers' Health Examination Institutes and 7 Pneumoconiosis Referal Centers were surveyed for their current lung function tests, types of spirometers, and performance of technicians. To examine the effect of quality control program of lung function tests on the variablity of test results, 118 miners were tested under a quality control guideline and the results were compared to those obtained ignoring 4 major areas of the guideline-spirometer calibration, minimum number of tests per session, suitable prediction equations, and selection process of final results for each tested subjects. Among surveyed Institutes and Centers, only 38%(20/53) are performing any calibration of spirometers, and most of those calibrations are done automatically by the machine. All the surveyed Institutes and Centers obtain acceptable test no more than 2 times. The background of technicians include office workers and nurse aids without an adequate training in pulmonary physiology, and the testing posture and formats vary among Institutes and Centers. When the types of pulmonary dysfunction under the definition of the Ministry of Labor were compared between those obtained with and without quality control guidelines, spirometer calibration affected the test results in 6(5.1%) out of 118 subjects. The change in the minimum number of adequate tests from 1 to 3 and more brought changes in 19(16.1%) subjects. The test results of 9(7.6%) subjects differed between two different prediction equations, and the results of 7(5.9%) subjects differed between two different selection process of final results. The current practice of lung function tests of workers needs quality control programs, and the results of this study indicate that the first remedy should be to bring the minimum number of acceptable test to more than 3.

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