근골격계질환 예방·관리 프로그램의 실시현황과 인증 방안에 대한 연구

배황빈(Hwangbin Bae),김태윤(Taeyun Kim),김소정(Sojeong Kim),김재훈(Jaehun Kim),김유창(Yuchang Kim) 대한인간공학회 2018 대한인간공학회 학술대회논문집 Vol.2018 No.11

업무상 정신질환의 특성과 예방에 관한 연구

김광일(Kwangil Kim),김유창(Yuchang Kim) 대한인간공학회 2020 大韓人間工學會誌 Vol.39 No.4

Objective: The purpose of this study is to analyze the differences between male and female by patient, mental disease, age, work period, and industry on the characteristics of work-related mental disease. And the study suggests the preventive measures of work-related mental disease according to the analysis results. Background: Work-related mental disease is caused by depression, job stress, and high job demands. According to statistics of industrial accidents, the number of people diagnosed with work-related mental disease is increasing every year. But the study on the causes and preventions of work-related mental disease hasn"t almost been conducted. Method: Based on statistics of work-related mental disease provided by the Ministry of Employment and Labor, the characteristics of work-related mental disease were analyzed for 195 people. Results: According to analysis, patient of work-related mental disease accounted for 60.3% males and 96.6% females, and mortality of work-related mental disease accounted for 39.7% males and 3.4% females. It was found that work-related mental disease by work period was the highest at 28.2% in "less than 1 year". The work-related mental disease by industry was the highest at 56.3% in the service industry. Conclusion: Based on this study, mental counseling and development of mental health care programs are needed to reduce the patient of work-related mental disease. In addition, suicide prevention programs are needed to reduce mortality of work-related mental disease. Considering the work period, it should be implemented workplace adaptation programs for new employees. Application: These results can contribute to prevention of work-related mental disease. And it can be used as basic data for research on work-related mental disease.

한국의 정신질환으로 인한 산업재해예방 연구

김광일(Kwangil Kim),홍석민(Seokmin Hong),이현재(Hyunjae Lee),오순영(Soonyoung Oh),김유창(Yuchang Kim) 대한인간공학회 2018 대한인간공학회 학술대회논문집 Vol.2018 No.11

인력에 의한 중량물 취급 시 팔을 뻗은 자세에 따른 근전도 및 주관적 작업부하 분석

김재훈(Jaehun Kim),김유창(Yuchang Kim),안대은(Daeeun Ahn),곽희제(Heeje Kwak) 대한인간공학회 2021 대한인간공학회 학술대회논문집 Vol.2021 No.6

누운 자세에서 팔의 작업부하 분석

고명혁(Myeonghyeok Go),김유창(Yuchang Kim),류병욱(Byeonguk Ryu) 대한인간공학회 2023 대한인간공학회 학술대회논문집 Vol.2023 No.5

근골격계부담작업의 적절성에 관한 연구

천인애(Inae Chun),김유창(Yuchang Kim) 대한인간공학회 2020 大韓人間工學會誌 Vol.39 No.5

Objective: The purpose of this study was to identify the problems and appropriateness of musculoskeletal burden work by industry, and to present the improvement direction and efficient implementation so that musculoskeletal burden work can be applied to the workplace. Background: The Ministry of Employment and Labor defined the scope of 11 musculoskeletal burden work in 2003. However, controversy continues over the appropriateness of musculoskeletal burden work. There are missing elements such as vibration, job stress, and a subjective load of workers in determining whether musculoskeletal burden work. Also, intermittent work with less than 60 days of work is not included in the musculoskeletal burden work. Method: This study was conducted a questionnaire of 127 safety manager, health manager, general worker, and administrative supervisor. Of the 127 respondents, 33.1% respondents were engaged in the manufacturing industry and 66.9% were engaged in the non-manufacturing industry. The main contents of the questionnaire are appropriateness and improvement direction of the 11 musculoskeletal burden work. Results: The results of the appropriateness of including a subjective load of workers to the evaluation method of musculoskeletal burden work were statistically significant differences by industry. The results of the appropriateness of the 11 musculoskeletal burden work were not statistically significant differences by industry except for No. 4, and 48.6% of respondents replied that the 11 musculoskeletal burden work were not appropriate. Conclusion: The 11 musculoskeletal burden work should be improved to include factors that can cause musculoskeletal disorders such as vibration and job stress. The intermittent criteria of musculoskeletal burden work need to be improved. In addition, by integrating musculoskeletal burden work No. 8 to 10 related to weight handling, it seems necessary to judge the degree of burden on a simple and clear criterion. Application: A subdivided criteria is needed so that the criteria for determining musculoskeletal burden work can be applied to various industries. The result of this study can be used as the basic data for research on the improvement of musculoskeletal burden work.

조선업에서 사무직과 생산직 근로자의 직무스트레스 평가에 관한 연구

정현욱 ( Hyunwook Jeong ),김유창 ( Yuchang Kim ) 한국안전학회(구 한국산업안전학회) 2015 한국안전학회지 Vol.30 No.5

In recent years, Korea``s shipbuilding industry have expanded its business into offshore plant. These changes are increasing the interest on job stress in shipbuilding industry. The purpose of this study is to investigate the differences of job stressors between white and blue-collar workers. The survey was using Korean Occupational Stress Scale(KOSS) questionnaire and was administered to 8,080 workers of large shipyard company. As a result of the survey, compared with the median score of Korean workers, job stress level of shipyard company workers was low. However, seven categories of KOSS, except for job demand showed higher stress levels of blue-collar workers than white-collar workers. The overall stress level of shipyard company workers is low, however, it is important to find stressors by considering the type of work, working period etc., through a detailed analysis of KOSS 8-categories. The results of this study may be helpful to identify the level of stress and to establish preventive measures in Shipyard Company.

들기 작업 시 작업자 1인과 2인에 따른 작업부하 분석

배황빈(Hwangbin Bae),김유창(Yuchang Kim),고명혁(Myeonghyeok Go),안대은(Daeeun Ahn),곽희제(Heeje Kwak) 대한인간공학회 2021 대한인간공학회 학술대회논문집 Vol.2021 No.11

Objective: 본 연구의 목적은 1인 들기 작업과 2인 들기 작업에 따른 %MVC 값, 주관적 불편도 값, NIOSH Lifting Equation(NLE) 평가 결과를 비교분석하여 1인 들기 작업과 2인 들기 작업에 대한 작업부하의 차이를 알아보기 위함이다. Bac㎏round: 최근 한국의 근골격계질환 발생 현황을 살펴보면 2017년 5,195건, 2018년 6,715건, 2019년 9,440건으로 급격히 증가하고 있다. 들기 작업은 근골격계질환의 주요 원인 중 하나이며, 선진국에서도 중대한 문제로 인식되어 많은 연구가 이루어지고 있다. 실제 제조, 물류, 서비스 산업 등 여러산업 현장에서의 들기 작업은 2인을 필요로 하는 경우가 많지만, 2인 들기 작업에 대한 정확한 평가 기준이 없어 1인 기준의 평가 방법에 중량을 2분의 1로 나누어 그대로 적용하고 있는 실정이다. Method: 본 연구의 실험참여자는 20대 남자 대학생 및 대학원생을 대상으로 9명을 선정하였고, 예비실험을 통해 척측수근굴근, 상완이두근, 전면삼각근 3가지 근육을 근전도(EMG) 측정 대상 근육으로 선정하였다. 실험은 시점 1m 높이에서 종점 1m 40㎝ 높이로 5초간 중량물 상자를 이동시키는 것으로써, 1인 5㎏, 10㎏, 15㎏과 2인 10㎏, 20㎏, 30㎏의 총 6가지 조건에서 랜덤한 순서로 실시하였다. 수집된 근전도(EMG)의 %MVC값과 주관적 불편도 평가값에 대한 통계적 분석을 실시하였으며, 실험 데이터를 NIOSH Lifting Equation 평가값과 비교분석 하였다. Results: 근전도(EMG) 실험에서 2인 들기 작업 시 위험으로 분류된 작업의 가장 높은 %MVC 증가율은 1인 10㎏, 2인 20㎏에서 37%, 1인 15㎏, 2인 30㎏에서 39%로 나타났다. 주관적 불편도 값은 중량물의 무게가 증가할수록 높게 나타났으며, 2인 들기 작업 시 위험으로 분류된 작업의 주관적 불편도 증가율은 1인 10㎏, 2인 20㎏에서 36%로 나타났다. 1인 10㎏과 2인 20㎏ 조건에서 NLE 평가 결과와 2인 들기 작업의 %MVC, 주관적 불편도 결과는 안전하다고 나타났다. 다른 조건에서는 위험 수준이 동일하게 분류되었지만, 대부분 1인 들기 작업보다 2인 들기 작업에서 %MVC 값과 주관적 불편도 값이 높게 나타났다. Conclusion: 1인 들기 작업보다 2인 들기 작업 시에 작업부하가 크게 발생하므로, 2인 들기 작업 평가 시 중량을 2분의 1로 나누어 적용하는 것은 적절하지 않은 것으로 판단된다. 2인 작업 시 위험으로 분류된 작업의 %MVC 증가율 37%, 39%와 주관적 불편도 증가율 36%를 참고하여, 2인 들기 작업 평가 시 중량에 약 1.4의 가중치를 곱하여 평가하는 것이 적절하다고 판단된다. Application: 본 연구는 들기 작업과 관련된 작업을 설계하거나, 들기 작업 평가 시에 참고자료로 활용될 수 있을 것이라 판단된다.

근골격계질환 예방을 위한 유해요인조사 결과보고 제도의 실효성 방안에 대한 연구

이신우(Shinwoo Lee),김유창(Yuchang Kim) 대한인간공학회 2020 大韓人間工學會誌 Vol.39 No.4

Objective: The purpose of this study is to understand the appropriateness and disadvantages of the result reporting system about risk factors analysis and to find out how to improve the effectiveness of the result reporting system. Background: Although the risk factors analysis for preventing musculoskeletal disorders was conducted since 2003, the implementation rate was low in Korea. Recently, as the legal effectiveness of the risk factors analysis has been lowed due to the low implementation rate, the issue of legal obligation the reporting system about risk factors analysis has been raised. In order to protect all workers from musculoskeletal disorders, it was necessary to find out how to increase the implementation rate by legally mandating the result reporting system about risk factors analysis. Method: This study was conducted a questionnaire of 126 safety/health managers, workers, and management supervisors, safety/health agency workers, and business owners in various industries. The main contents of the questionnaire are appropriateness, advantages, disadvantages, and effectiveness of the result reporting system about risk factors analysis. Results: The results showed that the reliability of risk factors analysis would be increased by the implementation of the result reporting system. The cost support system about risk factors analysis would be needed because of the cost problem on the corporation. Conclusion: It was judged that plan for enforcing the legal obligation of the reporting system would be needed to enhance the effectiveness of risk factor analysis. In order to increase the reliability of the risk factors analysis, it was necessary to report to the Minister of Employment and Labor after confirming by worker representative. Also, it was considered that a cost support system would be necessary to activate the result reporting system about risk factor analysis. Application: These results can contribute to the improvement of the risk factor analysis and the prevention of musculoskeletal disorders. It can be used as the basic data for research on the result reporting system about risk factors analysis.

크레인 관련 작업자의 근골격계질환과 작업환경과의 관계에 대한 연구

홍석민(Seokmin Hong),김유창(Yuchang Kim),이현재(Hyunjae Lee) 대한인간공학회 2019 대한인간공학회 학술대회논문집 Vol.2019 No.5