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Original Article
A Relationship between Cumulative Trauma Disorder and the Type of Workstations and Chairs in Workers with Repetitive Motion Tasks
Hyun Gi Jeong, Young Man Roh, Hyeon Woo Yim, Chung Yill Park, Chun Hwa Jeong
Korean Journal of Occupational and Environmental Medicine 2001;13(2):152-163.   Published online June 30, 2001
DOI: https://doi.org/10.35371/kjoem.2001.13.2.152
AbstractAbstract PDF
OBJECTIVES
The main purpose of this study was to investigate relationship between cumulative trauma disorders(CTDs) and the types of workstation and chair in workers with repetitive motion tasks.
METHODS
The study subjects were 77 repetitive motion tasks workers at small manufacturing industries in Seoul and Gyung-gi district area. A questionnaire was used to obtain about health practice for prevention and prevalence of CTDs by worker. The type of Workstations and chairs in workers were measured and analyzed with prevalence of CTDs by logistic regression.
RESULTS
Eighty-six percent of workers recognized that work posture was related to workstation and chair. Most employers and employees didn't follow the work practice guidelines for workers with repetitive motion tasks. The prevalence of CTDs was 64% by questionnaire. The prevalence of pain in shoulder, neck, back, and arm were 38%, 15%, 6%, and 5%, respectively, and the pain started after working an average duration of 16.5 months. The CTDs symptoms were significantly related to thickness of workstation, height of workstation, length of knee depth under workstation, height of back rest, height of seat pan, depth of sitting surface, width of sitting surface, and length from workstation surface edge to shoulder. By multiple regression analysis of each risk factor, prevalence of CTDs was highly correlated with height of back rest, height of seat pan, and depth of sitting surface.
CONCLUSIONS
This study suggests that workstations should be made adjustable for height and chairs should be equipped with seat pan height control, enough sitting surface for depth and width, back rest height and angle control. The workers should use the right working postures, exercise for health, occupational health education, and rest breaks and the manager of company should be educated for the preventing of CTDs.

Citations

Citations to this article as recorded by  
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  • Correlation Between the Height and the Subjective Discomfort Ratings and Muscle Performance at performing the Lower Arm's Pronation and Supination according to the Changes in Height of Working Table
    Kyung Tae Yoo, Jung Hyun Choi, Hee Jung Kim, Bom Lee, Jea Wook Jung, Wan Suk Choi, Young Dae Yun, Soon Hee Kim
    Journal of International Academy of Physical Therapy Research.2012; 3(2): 469.     CrossRef
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Original Article
Effect of Height and Arm Length on Simple Reaction Time
Hyang Sook Kim, Chae Yong Lee, Jong Young Lee, Mun Suk Jyung, Hyeong Ryeol Yoon, Gwang Seo Choi
Korean Journal of Occupational and Environmental Medicine 1996;8(1):97-104.   Published online February 29, 1996
DOI: https://doi.org/10.35371/kjoem.1996.8.1.97
AbstractAbstract PDF
To identify the relation between simple reaction time and height and arm length, simple reaction time was performed to medical students with measurement of height, and arm length. Participants should answer questions about Smoking, drinking, sleep deprivation, history of diseaseand drug, whether to use computer or hot Mean height of men(n=98) was 173.0+/-4.79 cm, that of women (n-22) 161.7+/-4.33 cm. Mean arm length of men was 73.5+/-3.09 cm, and that of women 68.0+/-2.93 cm respectively. Height and arm length were statistically significantly different between-men and women (plt;0.01). Mean simple reaction time of men was 265.4+/-25.03 msec, that of women 286.8+/-28.48 msec. Mean simple reaction time was also statistically significantly different(p<0.01). As a result of correlation analysis, for men. None was significant. However, for women, height and arm length showed statistically significant, correlation with mean reaction time. Correlation coefficient of height and arm length were 0.45 (p<0.05) and 10.57 (p<0.05) respectively.

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Original Article
Weighted Needle Pinprick Sensory Threshold (WPT) and Arthropornetric Parameters
Jong Young Lee, Ji Yeon Son, Soon Woo Park, Eung Chun Lee, Doohie Kim
Korean Journal of Occupational and Environmental Medicine 1994;6(2):342-347.   Published online September 30, 1994
DOI: https://doi.org/10.35371/kjoem.1994.6.2.342
AbstractAbstract PDF
To assess the relationship of pinprick sensory threshold with height and weight, Ninety seven healthy young (age 19 to 28) males were tested on their anatomical snuff box of both Hands. Their WPT was measured by device holding and moving weighted needle sensory threshold apparatus. Mean of the WPT was 0.43(+/-0.24) g in left and, 0.53( 0.30) g in right hand. Difference of WPT between the right and left hand appeared statistically significant (p<0.01) . Correlation coefficient of WPT with height was 0.26461 (p<0.01) in left and, 0.31856 (p<0.01) in right hand. Weight was statistically significantly correlated with WPT in left hand (r=0.24932, p<0.01) The study shows that the left-right difference and influence of height in pinprick sense may exist in normal healthy male adults.

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