Annals of Occupational and Environmental Medicine

Research Article

Characteristics of occupational musculoskeletal disorders of five sectors in service industry between 2004 and 2013: Hyun-Woo Choi, Young-Ki Kim, Dong-Mug Kang, Jong-Eun Kim, Bo-Young Jang; Ann Occup Environ Med 2017;29:41. Published online September 19, 2017; DOI: https://doi.org/10.1186/s40557-017-0198-4

Background

‘Work related musculoskeletal disorders (WRMSDs)’ have been mostly reported in the manufacturing industry but recently the occurrence of industrial injuries has been constantly increasing in the service industry. This research is going to analyze the data about workers’ compensation for WRMSDs in five different service sectors and identify characteristics of occupations with the highest approved occupations.

Methods

According to the data released from the Korea Worker’s Compensation & Welfare Service, the overview of 12,730 cases of workers’ compensation for WRMSDs in five service sectors from 2004 to 2013 is going to be analyzed and the source data is going to be classified by the Korean Standard Classification of Occupations to select the top five occupations that have the highest number of approval.

Results

After selecting each five occupations from the service sector that have work related musculoskeletal disorders, the result showed that the occupation with the highest number of approval in the health and social care sector were the early childhood educators, cooks in the school canteens in education services sector, garbage collectors in the sanitation and similar services sector, deliverymen in wholesale and retail, consumer goods repair and building cleaners in general management businesses such as those in building maintenance. The major event observed in the top five occupations was the overexertion and reaction as a cause of WRMSDs. The day when the WRMSDs mostly occurred was on Monday and the most likely time was 10 am. The median days away from work and lost working days are 29–90 days and 0–50 days respectively. The difference in each occupation was observed in year of service, age, and gender.

Conclusions

83.21% of the approved cases of workers’ compensation for WRMSDs occurred in the top 25 occupations in all of the five service sectors, which meant that the approval of workers’ compensation is concentrated in specific occupations. This research is going to suggest preventive measures for work related musculoskeletal disorders in the service industry and to help prioritize the preventive measures.

Trial registration

Not applicable.

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Randomized Controlled Trial

Effects of the Use of the Hold Relax Technique to Treat Female VDT Workers with Work-related Neck-shoulder Complaints: Young Min Kim; Korean Journal of Occupational and Environmental Medicine 2009;21(1):18-27. Published online March 31, 2009; DOI: https://doi.org/10.35371/kjoem.2009.21.1.18

Abstract PDF

OBJECTIVES
The purpose of this study was to investigate the effects of encouraging exercise to treat work-related neck-shoulder pain by mobile phone messages after training individuals to use the holdrelax technique.
METHODS
Subjects were randomly allocated into an exercise (n=20) and a control (n=21) groups. The exercise group was taught stretching exercise methods known as the hold-relax technique for the upper trapezius, levator scapula, scalenus, and suboccipitals. They then received mobile phone messages encouraging them to do the exercises twice a week for eight weeks. The visual analog scale (VAS) of neck and shoulder pain, the pressure pain threshold (PPT) for the four muscles, and the cervical ROM were measured at baseline and at the end of the study.
RESULTS
The VAS decreased significantly in the exercise group from 3.35 to 1.65 (p<0.001) for the neck, and from 4.55 to 2.05 for the shoulder (p<0.001). In addition, the PPT of the four muscles increased (p<0.001) in the exercise group. However, no significant changes in the VAS and the PPT of the control group were observed. Furthermore, the ROM did not differ significantly between the exercise and control groups after intervention.
CONCLUSION
Teaching patients to use the hold-relax technique and encouraging exercise using mobile phone messages can reduce work-related neck-shoulder pain.

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Original Article

Characteristics and Odds Ratio of Work Related Musculoskeletal Disorders According to Job Classification in Small-to-medium-sized Enterprises: Shin Goo Park, Jong Young Lee; Korean Journal of Occupational and Environmental Medicine 2004;16(4):422-435. Published online December 31, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.4.422

Abstract PDF

OBJECTIVES
This study was carried to investigate the prevalence and odds ratio of work related musculoskeletal disorders according to the job classification in small-to-medium-sized enterprises(<300 employee).
METHODS
A questionnaire survey was given to 746 workers in 8 workplaces. 501 workers (67.2%) were finally selected in this study. The workers in the 8 workplaces was divided into 7 jobs. Those were manufacturers(metal), assemblers(appliances), cashiers, packers(cosmetics), garbage collectors, and VDT workers. Multiple logistic regression was used to estimate the odds ratios of the musculoskeletal symptoms according to the job classification.
RESULTS
Univariate analysis showed that the significantly related risk factors for musculoskeletal symptoms are as follows; age, marital status, gender, work load change, work duration, hours worked per day, job demand, decision latitude, type of job. According to the type of job, the prevalence of musculoskeletal symptoms were 7.7%(clerks), 24.3%(manufacturers), 30.0%(assemblers), 23.0%(cashiers), 30.4%(packers), 11.9%(garbage collectors), 29.2%(VDT workers). Multiple logistic regression showed that the following significant odds ratios (referenceclerks): 7.32(packers), 5.63(assemblers), 5.11(cashiers), 4.79(VDT workers), 3.11(manufacturers).
CONCLUSION
In small-to-medium-sized enterprises, the job classification was major risk factor for work related musculoskeletal disorders. According to the job classification, the odds ratios of the work related musculoskeletal disorders were different. Considering the odds ratios, the establishment of a prevention program of work related mus-culoskeletal disorders is recommended.

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The association between long working hours and work-related musculoskeletal symptoms of Korean wage workers: data from the fourth Korean working conditions survey (a cross-sectional study)
Jae-Gwang Lee, Guang Hwi Kim, Sung Won Jung, Sang Woo Kim, June-Hee Lee, Kyung-Jae Lee
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
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Original Article

Risk Factors Related to Musculoskeletal Symptoms in Shipyard Workers: Byung Chan Park, Hae Kwan Cheong, Soo keun Kim; Korean Journal of Occupational and Environmental Medicine 2003;15(4):373-387. Published online December 31, 2003; DOI: https://doi.org/10.35371/kjoem.2003.15.4.373

Abstract PDF

OBJECTIVES
The aim of this study is to determine the risk factors related to musculoskeletal disorders in shipyard workers.
METHODS
A questionnaire survey was performed on 2,140 shipyard workers in a shipyard in Ulsan city. The questionnaire consisted of questions on the general characteristics, the health behavior, work type and duration, physical burden, job control, type of instruments used, posture, and musculoskeletal symptoms. Definition of musculoskeletal disorders was based on either NIOSH criteria and Kim's criteria.
RESULTS
Positive rate of musculoskeletal disorders in any one part of the body was 77.2% by NIOSH criteria and 60.7% by Kim's criteria. Positive rate of the symptoms increased in workers with longer work hours, with a severe physical burden, and without any control over their job. Work with a more frequent unstable posture and for longer hours was also associated with increased musculoskeletal symptoms. Multiple logistic regression analysis showed that unstable posture and physical burden is closely related to the positive rate of musculoskeletal symptoms after controlling for age, smoking, drinking, exercise, duration of work, and job control; showing a good dose-response relationship.
CONCLUSION
Inadequate posture and physical burden were the most significant factors affecting musculoskeletal disorders in shipyard workers in this study. Therefore, it will be necessary to make efforts to reduce the prevalence of musculoskeletal disorders related to a specific job, instrument, physical burden, and posture. Workers should be educated on the types and prevalence of musculoskeletal disorders, how to improve the ergonomic occupational environment and to set up preventive measures against the risk factors during work.

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Musculoskeletal Disorder Symptoms and Its Related Factors among Male Workers in Manufacturing Industries
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Jung ho Kim, Byung seong Suh, Soo Geun Kim, Won sool Kim, You il Shon, Hee seung Son
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Hak Young Rhee, Jae Hwan Cho, Jong Min Seok, Taek Sang Cho, Woo Jin Jeon, Jin Gu Lee, Sung Kyu Kim
Archives of Environmental & Occupational Health.2015; 70(4): 177. CrossRef
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Taek-Sang Cho, Woo-Jin Jeon, Jin-Gu Lee, Jong-Min Seok, Jae-Hwan Cho
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Original Article

Musculoskeletal Disorders and Related Factors of Symphony Orchestra Players: Nak Jung Sung, Joon Sakong, Jong Hak Chung; Korean Journal of Occupational and Environmental Medicine 2000;12(1):48-58. Published online March 31, 2000; DOI: https://doi.org/10.35371/kjoem.2000.12.1.48

Abstract PDF

OBJECTIVES
Several studies have shown that performance related musculoskeletal disorders present a significant and common health problem for instrument players. This study was conducted to investigate the symptom prevalence rate of performance-related musculoskeletal disorders and risk factors on symphony orchestra players.
METHODS
The symptom prevalence rate of musculoskeletal disorders and related factors including demographic factors, occupational factors, psychosocial factors, practice and performance-related behaviors of on 156 symphony orchestra players in Taegu city were surveyed with a self-administered questionnaire.
RESULTS
Instrument players have performed for 14. 6 years in average and worked 4. 9 for years in average as a member of symphony orchestra. The subjects consisted of 106 string players, 48 wind players, and 8 percussion players. The symptom prevalence rate of musculoskeletal disorders according to the NIOSH surveillance criteria was 79. 6 % and operational criteria by authors was 45. 9 %. The prevalence rate of viola players was higher than violin players, and the prevalence rate of the bass players was higher than that of the cello players. In univariate analysis, job insecurity, irregular performance, stress from family problems, and performance related psychosomatic strains had a significant association with the prevalence rate of musculoskeletal disorders. In multiple logistic regression, job insecurity, irregular performance, and stress from family problems were significant variables affecting the prevalence rate of musculoskeletal disorders of instrument players.
CONCLUSIONS
This study suggest that symphony orchestra players are high risk group of musculoskeletal disorders. Irregular performance schedule and psychosocial stress including job insecurity, and psychosomatic strain were important risk factors of players musculoskeletal disorders. An exercise program such as stretching before and after performance, regular performance schedule and reduction of psychosocial stress might be helpful for prevention of musculoskeletal disorders of instrument players.

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