• 대한인간공학회지
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• 제29권4호
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• pp.423-433
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• 2010

The presence of musculoskeletal burden tasks and work related musculoskeletal disorders (WMSDs) at Industrial workers was not well-known until 2000 in Korea. Since The Occupational Safety & Health Law was registered a business of proprietor duty in preventing work-related MSDs of workers In July of 2003 WMSDs became a big issue in Korea. A social previous interest was focused on the manufacturing industry just like auto and shipping industry in manufacturing sectors but nowadays it is spreading out to non-manufacturing fields gradually. Nevertheless, we have WMSD prevention Law and System in Korea to reduce WMSDs effectively and systematically we recognized some mistakes and problems of WMSD Law and System. In this paper we study these recent problems in Korea from about 10 years experience and proposed some proposals as discussion.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2008년도 추계학술대회
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• pp.329-341
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• 2008

The psychosocial stress and musculoskeletal disorders(MSDs) have been one of major health problems for hospital workers. This study tried to understand the relationship between symptoms associated with MSDs and risk factors such as working posture, job stress, psychosocial stress and fatigue. A total number of 655 hospital workers participated in this study. Specifically, REBA was applied for evaluating working posture and a checklist prepared by KOSHA(Korean Occupational Safety and Health Agency) was used for symptom survey. A questionnaire from KOSHA was also used for collecting data associated with job stress, psychosocial stress and fatigue. All these data were formulated and modeled by path analysis which was one of major statistical tools in this study. Specifically, path analysis for the data we collected came up with several major findings. The risk scores from working posture based on REBA had indirect effects via fatigue factor(MFS) as well as direct effects on symptoms. The factors associated with job stress(KOSS) and psychosocial stress(PWI-SF) had significant effects on symptoms. Specifically, indirect effect of job stress factors via fatigue factors(MFS) had bigger than that of direct effect of job stress on symptom.

• 한국산림과학회지
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• 제109권2호
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• pp.195-201
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• 2020

산림작업은 비정형화된 작업 환경(날씨, 지형)에서 신체의 반복적인 동작 등으로 인하여 근골격계 질환에 취약하다. 특히, 조림목의 원활한 생장을 위해 실행하는 풀베기와 칡덩굴제거 작업은 여전히 많은 인력이 투입되고 있으며, 이 작업자세에 대한 인간공학적 평가가 필요하다. 따라서 본 연구에서는 OWAS (Ovako Working Posture Analysis System) 분석방법을 이용하여 예초기를 이용한 풀베기 작업과 낫·손톱을 이용한 칡덩굴제거 작업의 신체부담을 정량적으로 평가하였다. 또한 작업자세 위험도 지수(Postural risk index: PRI)를 통하여 산림작업의 위험 정도를 분석하였다. 풀베기와 칡덩굴제거 작업원에 대한 작업자세를 분석한 결과, 칡덩굴제거작업의 작업자세 위험성이 풀베기작업에 비해 통계적으로 더 높은 수준을 보였다. 칡덩굴을 제거하는 작업 과정 중에서 다리에서는 두 다리를 구부리는 자세와 무릎 꿇는 자세의 비율이 높게 나타나기 때문에 근골격계에 부정적 영향을 미치는 것으로 판단된다. 이 연구결과는 풀베기와 칡덩굴제거 작업원의 작업부하 및 근골격계 질환을 저감하는 기초자료로 활용될 수 있을 것으로 기대된다.

• 대한안전경영과학회지
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• 제13권4호
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• pp.91-100
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• 2011

Main motivation for this study was to identify the relationship between high-risk hospital jobs and their symptoms associated. This study has three objectives; 1) Evaluate major jobs of hospital workers based on Criterion(Notification number 2003-24 from Ministry of Labor in Korea) for high-risk musculoskeletal disorders(MSDs), 2) Relate each jobs in criterion and the hospital jobs considered in this study, 3) Relate each jobs in criterion and MSDs symptoms of hospital workers. A total 141 hospital jobs was evaluated. Specifically, a total 688 hospital workers participated in the questionnaire survey in this study. There were two most jobs belonged to the numbers 2 and 4 from criterion. Most hospital workers participated in this study thought that the numbers 1 and 2 from criterion were associated with their jobs. In terms of MSDs symptoms, the numbers 1 and 2 from criterion were associated with their jobs as well. Further study for hospital jobs should be focused on breaking down quantification levels of each numbers in the criterion due to its atypical and non-repetitive job characteristics of hospital jobs.

• 대한인간공학회지
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• 제24권1호
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• pp.27-35
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• 2005

This paper describes a practical ergonomic approach for the shipbuilding industry that occupies the highest rate of work-related musculoskeletal disorders (WMSD) in Korea. Typical work processes within a shipbuilding operation were surveyed to determine the presence of risk factors associated with musculoskeletal disorders. We used interviews, document analysis, video analysis, and OWAS postural analysis to identify and quantify ergonomic risk factors that workers may be exposed to in the course of their normal work duties. Some ergonomics actions were performed to solve the problems identified in the risk factor analysis. The practical ergonomic approach has resulted in decreases in workers' accident, and increases in productivity. The ergonomic solutions developed in this study could be applied to other sectors of industry that share common features of work with shipbuilding industry.

• 대한안전경영과학회지
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• 제8권6호
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• pp.13-27
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• 2006

The goal of this study is to propose the effective way of finding injurious factors and making improved plan that prevents the workers against musculoskeletal disorders at a semi-finished medical product fabricating company A questionnaire and an ergonomic assessment method were adopted to analyze the symptoms of workers' musculoskeletal disorders, and an analysis of working postures and a quantitative assessment on various processes were performed to find out harmful factors of workplace. Based on the result of the evaluation, to enhance the working environment, improvement of worktable, working space, tools, and outfit was suggested, and induction of mechanical system was also suggested. It can be concluded that the method and process described in this paper could be helpful for diagnosing the musculoskeletal disorders and making improvement plans to the company with similar working conditions and process.

• 대한인간공학회지
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• 제24권3호
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• pp.43-52
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• 2005

A two-dimensional posture measurement system was developed to evaluate the risks of work-related musculoskeletal disorders(MSDs) easily on various conditions of work. The posture measurement system is an essential tool to analyze the workload for preventing work-related musculoskeletal disorders. Although several posture measurement systems have been developed for workload assessment, some restrictions in industry still exist because of its difficulty on measuring work postures. In this study, an image recognition algorithm was developed based on a neural network method to measure work posture. Each joint angle of human body was automatically measured from the recognized images through the algorithm, and the measurement system makes it possible to evaluate the risks of work-related musculoskeletal disorders easily on various working conditions. The validation test on upper body postures was carried out to examine the accuracy of the measured joint angle data from the system, and the results showed good measuring performance for each joint angle. The differences between the joint angles measured directly and the angles measured by posture measurement software were not statistically significant. It is expected that the result help to properly estimate physical workload and can be used as a postural analysis system to evaluate the risk of work-related musculoskeletal disorders in industry.

• 한국안전학회지
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• 제25권4호
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• pp.68-75
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• 2010

This study was conducted to evaluate the differences in symptoms of work-related musculoskeletal disorders (WMSDs) and health-related quality of life (HRQoL) between vinylhouse farmers and non-vinylhouse farmers. The study included 118 residents who lived in a rural community. All subjects were assigned to the vinylhouse farmers group (N=58) and the non-vinylhouse farmers group (N=60) according to main agricultural work type. All respondents were interviewed by means of a structured questionnaire. WMSDs symptoms were measured by a self- assessed questionnaire on symptoms of musculoskeletal disorders, and HRQoL was measured by SF-36. Vinylhouse farmers had significant more symptoms of WMSDs in each regional parts of musculoskeletal system, and had significant poor total health status in SF-36. Symptoms of WMSDs were most reliable risk factor for HRQoL. Various health promotion interventions are needed to prevent WMSDs in all farmers and especially vinylhouse workers.

• 한국도서관정보학회지
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• 제42권4호
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• pp.243-262
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• 2011

이 연구는 근골격계 질환의 발생에 영향을 미칠 것으로 예상되는 요인들에 대해 20개 대학도서관 300명(266명 응답)의 사서들을 대상으로 설문조사를 실시하여 그 결과를 분석하였다. 응답자의 62.5%가 근골격계 질환 자각증상을 호소하였다. 근골격계 증상의 요인들을 분석한 후, 각 부위별로 유의미한 영향을 미치는 주요 요인들을 독립변수로 하여 다중회귀분석을 한 결과는 아래와 같다. 즉, 목의 증상에 영향을 미치는 변수는 근무조건 만족도였으며, 근무 만족도가 높을수록 목 부위의 증상 정도가 낮은 것으로 나타났다. 어깨부위의 증상에 대해서는 근무만족도, 작업강도, 식사시간이 설명변수로 선택되었다. 식사시간이 불규칙적일수록, 작업강도가 높을수록, 근무만족도가 낮을수록 증상의 정도가 높은 것으로 나타났으며, 이중에서도 특히 근무 만족도의 영향이 큰 것으로 나타났다. 팔 팔꿈치에서는 숙련도가 설명변수로 선택되었으며, 업무 숙련도가 높을수록 증상 정도가 높게 나타났다. 손가락 손목을 설명해주는 설명변수로는 업무 스트레스가 선택되었으며, 업무 스트레스가 많을수록 증상 정도가 높은 것으로 나타났다. 등 허리에서는 작업강도, 직장 만족도가 설명변수로 선택되었고, 작업강도가 높을수록, 직장 만족도가 낮을수록 증상이 높은 것으로 나타났다. 마지막으로 무릎 다리의 경우 흡연여부가 선택되었으며 비흡연자일수록 증상이 낮은 것으로 나타났다.

• 한국산업보건학회지
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• 제16권3호
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• pp.284-289
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• 2006

In 2003, Korean government made the 11 scopes of overburdened work[Ministry of Labor(MOL), Notification No. 2003-24] to prevent musculoskeletal disorders(MSDs). MOL Notification was established based on 'Washington Administrative Code 296-62-051, Ergonomics'. When initially investigating the contents, the labor unions and the specialists pointed out the possibility of devaluation on risk factors of MSDs. The present study aimed to compare the result of the NIOSH revised lifting equation(NLE) analysis with the MOL Notification(No.8, 9, 10) on manual lifting tasks. A study sample of 568 manual lifting tasks (automobile parts, foods, and tire manufacture) were evaluated for this study. All 502 tasks exceed lifting index(LI) of 1.0, but 276 tasks(55.0%) out of 502 tasks were evaluated non-over burdened work for musculoskeletal system by the MOL Notification. Particularly, 47 tasks(30.9%), in spite of exceeding LI of 3.0, were evaluated non-over burdened work. This study has shown the possibility of devaluation on risk factors of MSDs, when evaluated by MOL Notification. Therefore, it will be necessary to repeal or complement the scope of over-burdened work(MOL Notification) to prevent musculoskeletal disorders.