- A Survey on the Prevalence of Musculoskeletal Symptom accord ing to Work Task.
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Hae Ju Oh, Duk Hee Lee, In Guen Park, She Han Jang
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Korean J Prev Med. 1994;27(2):230-241.
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- Though people occupationally exposed to machineries and automation in the industrialized society desire work involving decreased strength, due to the continuous and repetitive activities, a new industrial stress is present. Studies on prevalence of musculoskeletal disease and their related risk factors have evolved. In this study in relation to work tasks, we investigated the differences in musculoskeletal symptoms occurring in each body region. The results of the survey were as follows. 1. When comparing age, level of education, work duration, job satisfaction and leisure time activities according to work risk, age in control group was 32.83+/-5.5, in comparison to the other 2 groups was smaller(p<0.05), and level of education in control group was higher(p<0.05) Work duration in the cutting department as 8.04+/-4.99 years longer than the other 2 groups(p<0.05), but there was no difference in the job satisfaction and leisure time activities. 2. The mean of symptom scores of each work task was 1.54 in the cutting department, 1.57 in the press department and 1.59 in the control group, and there was no significant difference in the 3 groups. The mean of symptom scores for upper extremities in the control group was low but mo statistically significant difference was shown. 3. When comparing the mean of symptom score according to work task in the each body region, in the shoulder region, the symptom score in the press department which desired strength was higher than the other 2 groups but no significant difference was shown. In the wrist region the cutting department scored 1.01 and in comparison to the other 2 groups was significantly increased(p<0.05). 4. The results of the univariate regression analysis on the major individual risk factors associated with musculoskeletal symptom relating work showed that previous symptom complaints in the same body region was significant risk factor(p<0.001) in the whole body, Besides wrist, hip, and knee, psychological problem was shown to be a significant factor(p<0.05). And the body regions which work task was significant risk factor were wrist and neck region(p<0.05). 5. The results of the multiple regression analysis involving significant factors of each body region from the unfavorite regression analysis showed that previous symptom shoulder, elbow and lumbar region(p<0.001) and psychological problem in the shoulder, elbow and lumbar region(p<0.05) were significant factors, and work task was significant factor in the wrist(p<0.05).
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Summary
- Assessment of the Naktong river pollution after phenol spillage from the Kumi industrial estates II, Korea.
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Doo Hie Kim, Bong Ki Jang, Sung Chul Hong, Hyo Jung Moon, Duck Hee Lee, Hae Ju Oh
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Korean J Prev Med. 1993;26(2):268-281.
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- The aquatic quality of the Naktong river after two of three months in June, 1991 with phenol spillage from a electrical factory in Kumi was investigated. The samples were collected at six sites of the Naktong river basin and Kachang and Kongsan lakes. Phenol was not detected from all water samples. Turbidity was very much increased to the down stream in the Naktong river. The BOD and COD values exceeded the 2nd grade(3 mg/l) of the Korean standard quality of Environmental Water Act at the all sampling sites of the Naktong river. Especially, the value of COD at Kaejin (12.5 mg/l) was poorly classified as to the 5th grade of water class for the environmental quality standards. Organophosphorous pesticides such as parathion, malathion, fenitrothion and diazinon were investigated but not detected. Diazinon was only detected at the Ilson bridge(1.42 ppb), Okkye stream(6.95 ppb), Waekwan bridge(0.32 ppb), Gangjung reservior(0.13 ppb), Kaejin(0.05 ppb). Of the carbamates such as carbanyl, isoprocarb and cabofuran, the carbofuran was detected all sites except tap water, and Kachang and Kongsan lakes. The content of heavy metals such ans Cd, Pb, Zn, Fe, Mn, Hg were not exceeding for drinking water standards at the all sampling region, but only mecury was detected from Okkye stream(0.018ppb) and Kaejin(0.09ppb). In the regions of Kachang and Kongsan lakes, the content of heavy metals were lower than that of reservoir of Naktong river.
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Summary
- A study of succiny trialanine p-nitroanilide hydrolytic activity in workers exposed to organic solvents.
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Hae Ju Oh, Jae Hoon Roh
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Korean J Prev Med. 1993;26(1):74-85.
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- To measure the serum succinyl trialanine p-nitroanilide hydrolytic activity as new index of liver function in workers exposed to organic solvents, this study conducted 114 workers in department of shoe-making of shoes factories. The results obtained from this study were as follows: 1. The mean values of serum GOT, GPT, gamma GT in whole workers were 22+/-12.32, 20+/-9.65, 28+/-21.35IU/l, respectively and the mean value of serum STN hydrolytic activity was 0.08 0.05. 2. The serum STN hydrolytic activity was significantly higher for male(p<0.05) and there was no difference among the groups of age. 3. There was no difference in the groups by working hours but significant difference in persons who worked over 3 years or were exposed to toluene over 100ppm(p<0.05). 4. The correlation of the exposed dose of toluene and serum GOT, GPT, gamma GT and serum STN hydrolytic activity were statistically significant(r=0.027-0.518). 5. The exposed dose of toluene was most explainable variable and statistically significant among the factors affecting serum STN hydrolytic activity(p<0.05).
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