• 대한안전경영과학회지
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• 제11권4호
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• pp.85-91
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• 2009

While musculoskeletal disorders increased, its prevention efforts were rather decreased or its operation was insufficient. This study aims to examine the actual conditions of musculoskeletal disorders at Electronics Company in Korea, analyze occupational danger factors related to musculoskeletal disorders through analysis of components of wrong workplaces and works, evaluate degree of danger of factors examined, analyze association between danger factors and musculoskeletal disorders, accumulate data of musculoskeletal disorders which are not enough in Korea and further prepare the foundation of improving working environment and developing prevention/management program of musculoskeletal disorders.

• Safety and Health at Work
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• 제12권2호
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• pp.225-229
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• 2021

Background: The socioeconomic burden of musculoskeletal disorders (MSDs) is significant, and kitchen work is a high-risk occupation for MSDs due to the intensive manual workload and repetitive movements that are involved. However, there are very few studies on MSDs and rest breaks as a workplace intervention among kitchen workers. This study examined the relationship between insufficient rest breaks and increased MSD risk among Korean kitchen workers. Methods: Sociodemographic and occupational factors of 1,909 kitchen workers were collected from the 3rd-4th Korean Working Conditions Survey data. Five items on rest breaks at work were categorized into two groups, "sufficient" and "insufficient." The number of MSDs and work-related MSDs (WMSDs), an outcome variable, was obtained from the sum of MSDs/WMSDs in three anatomical sites (back, neck, and upper limb, lower limb). The association between rest breaks and MSDs was estimated using zeroinflated negative binomial analyses, with adjustments for age, education level, and weekly working hours, and the analyses were stratified by sex. Results: After adjustment, significant associations were found between insufficient rest breaks and an increased risk of MSDs (odds ratio [OR] 1.68 95% confidence interval [CI] 1.11-2.54) and WMSDs (OR 1.40 95% CI 1.01-1.96) among female kitchen workers. Insufficient rest breaks were significantly associated with MSDs in female kitchen workers in all three anatomical sites. Conclusion: This study emphasizes the need for rest breaks as a workplace intervention for preventing MSDs in kitchen workers. Further studies to reveal the causality of this relationship are required.

• 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.

• 한국산업보건학회지
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• 제18권1호
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• pp.49-61
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• 2008

The objective of this study is to survey the risk factors of greenhouse vegetables farmers' work-related musculoskeletal disorders(MSDs). To offer the fundamental data for agricultural improvement of greenhouse vegetable farms, the questionnaire of MSDs and heath condition were carried out. A group of 736 workers(males=492, females=244) in 6 branches constitutes the population and database for the analysis between 2004 and 2005. The sample branch was chosen based on paper are watermelon, strawberry, tomato, melon, cucumber, lettuce. The results are as follows: 1. Smoking rates in cucumber and tomato is the highest. 2. Drinking rates in strawberry, cucumber and lettuce is the highest in males, watermelon and melon are the highest in females. 3. Regular exercise rates in melon are the highest. 4. Physical and mental fatigue in females is higher than that of males in most crops except melon. That of strawberry and tomato is the highest. 5. The prevalence rates of medical diagnosed diseases are higher in order of osteoarthritis, herniated nucleus pulposus(HNP), and hypertension. That of strawberry, melon, and cucumber is high in case of osteoarthritis; Strawberry, melon, and watermelon are high in case of HNP. 6. Prevalence rates of musculoskeletal symptoms among the various pain areas are higher in order of low back, knees, and shoulders. That of tomato and watermelon is high in case of low back; strawberry and tomato are high in case of knees. These results can be used practically for agricultural improvement of greenhouse vegetables farms to prevent MSDs.

• 대한인간공학회지
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• 제31권1호
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• pp.191-196
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• 2012

Objective: The Work-related musculoskeletal disorders(WMSDs) have been a problem on industrial occupational safety and health in Korean shipyard industry. It has been a big social problem. Background: As a result, Korean government enacted a law to prevent musculoskeletal disorders at work and some major companies have already implemented an ergonomics program. Method: This paper presents a study on the effect of an ergonomics program in a Korean shipbuilding company during the last ten years. Conclusion: The Incidence of WMSDs, the worker's compensation cost and the lost time were decreased after implementation of the ergonomics program. Application: The results of the publishing will help efficient operation of MSDs prevention activity in other companies.

• 대한인간공학회지
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• 제28권4호
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• pp.139-145
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• 2009

This study concerned with the characteristics and causes of musculoskeletal disorders (MSDs) for employees aged 50 years or older. In order to do this, based on 8,011 accident analysis reports, we analyzed the differences of characteristics between groups under 50 years and 50 years or more in terms of gender, occupation, duration of employment, part of body, industry, size of business and work-related factors. Results show that the distributions of the injuries aged 50 years or older are statistically different from those of the injuries under 50 years. Also, older employees have high relationship between repetition, or contact stress/vibration and upper extremity MSDs. These findings can be used to develop more effective MSD prevention programs for older employees.

• Safety and Health at Work
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• 제7권2호
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• pp.171-174
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• 2016

Effective and sustainable prevention of work-related musculoskeletal disorders (WR-MSDs) remains a challenge for preventers and policy makers. Coordination of stakeholders involved in the prevention of WR-MSDs is a key factor that requires greater reflection on common knowledge and shared representation of workers' activities among stakeholders. Information on workers' strategies and operational leeway should be the core of common representations, because it places workers at the center of the "work situation system" considered by the intervention models. Participatory ergonomics permitting debates among stakeholders about workers' activity and strategies to cope with the work constraints in practice could help them to share representations of the "work situation system" and cooperate. Sharing representation therefore represents a useful tool for prevention, and preventers should provide sufficient space and time for dialogue and discussion of workers' activities among stakeholders during the conception, implementation, and management of integrated prevention programs.

• Safety and Health at Work
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• 제7권4호
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• pp.322-325
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• 2016

Background: Musculoskeletal disorders (MSDs) are a common problem among carpet weavers. This study was undertaken to introduce affecting personal and occupational factors in developing the number of MSDs among carpet weavers. Methods: A cross-sectional study was performed among 862 weavers in seven towns with regard to workhouse location in urban or rural regions. Data were collected by using questionnaires that contain personal, workplace, and information tools and the modified Nordic MSDs questionnaire. Statistical analysis was performed by applying Poisson and negative binomial mixed models using a full Bayesian hierarchical approach. The deviance information criterion was used for comparison between models and model selection. Results: The majority of weavers (72%) were female and carpet weaving was the main job of 85.2% of workers. The negative binomial mixed model with lowest deviance information criterion was selected as the best model. The criteria showed the convergence of chains. Based on 95% Bayesian credible interval, the main job and weaving type variables statistically affected the number of MSDs, but variables age, sex, weaving comb, work experience, and carpet weaving looms were not significant. Conclusion: According to the results of this study, it can be concluded that occupational factors are associated with the number of MSDs developing among carpet weavers. Thus, using standard tools and decreasing hours of work per day can reduce frequency of MSDs among carpet weavers.

• 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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• 제28권3호
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• pp.17-25
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• 2009

This study was aimed to analyze of characteristics of Musculoskeletal disorders (MSDs) based on the industrial accident statistics which were extracted from the Ministry of Labor. In this study all MSDs cases in 2007, 7,723 cases, were investigated. First of all, for the analysis of a wide view point concerning the characteristics of MSDs, We have inspected characteristics of the user population (i.e. age, gender, employed periods, etc.). Secondly, work-related risk factors such as repetitive motions, awkward postures, manual material handling were analyzed in terms of disease code, injured part of body, types of business, etc. Next, characteristics of handling of heavy materials were analyzed according to weight, types of handling, agency of cause, etc. Finally, we have compared and analyzed the features between the period of hospitalization and other variables. In addition to that we also conducted statistics analysis. The study results showed that there were significant characteristics of MSDs that could be used as basis data for the MSDs prevention policy.