• Journal of the Korean Society of Safety
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• v.14 no.4
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• pp.168-175
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• 1999

The objective of this research is to review the ergonomic keyboard developed to prevent musculo-skeletal disorders from being occurred during keyboard work. It was studied by comparing it with the traditional keyboard after analyzing and comparing the typing performance and work advantages both the two keyboards. Twelve male subjects with no history of musculo-skeletal disorders participated in the experiment. The quantitative data such as typing speed, accuracy, performance time, and the number of typing errors were obtained from the HTT software that was adjusted for this experiment. RULA worksheet and the degrees of extension and ulnar deviation on right and left wrist were used to analyze the upper body postures. The experiment results showed that the typing performance of the ergonomic keyboard decreased a little, but no significant difference statistically, compared with that of the traditional keyboard. On the work posture, the ulnar deviation during typing decreased in case of the ergonomic keyboard. But, the wrist extension was increased unexpectedly. Therefore, it can be regarded as these results occur due to the shape of wrist rest and the overall height of keyboard on a table. As a result, the reconsideration and redesign on the ergonomic keyboard are requested.

• Journal of Korean Public Health Nursing
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• v.7 no.1
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• pp.81-97
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• 1993

This study was carried out to analyze the factors of the perieved symptoms of fatigue of the industrial workers, to examine the inter-relatisnship of the above factors with their general charactenstics and the environments of working area for the examination of their health status and the effective health management of them. This study was undertaken from December 1 to December 20, 1990. The subjets were 495 workers who had worked at the Industrial complex located in Chonbuk Province. The result of this study were as follows: 1. The worker's percieved symptoms of fatigue were classified to the following seven factors; A) Musculo-Skeletal Symptoms, B) Neuro-Psychial Symptoms, C) Optical Symptoms, D) Heart Symptoms, E) Head Symptoms, F) Respiratory Symptoms, G) Genital Symptoms 2. Analysis of the inter-relationship of their percieved symptoms of fatigue with general characteristics; 1) The difference of distribution to their percieved symptoms of fatigue according to sexuality was significant; Female were higher than Male $(p{\leqq}0.001$, p<0.005) 2) The difference of distribution to their percieved symptoms of fatigue according to age was significant; Age group under 24 years of age were higher than the other's group (p<0.001). 3) The difference of distribution to their percieved symptoms of fatigue according to the level of education was significant; Workers who stand on a low intellectual were higher than workers on a high intellectual level. 4) The difference of distribution to their percieved symptoms of fatigue for a week was the highest when worked at sunday. 5) The difference of distribution to their percieved symptoms of fatigue for seasons was high at spring. 3. Analysis of the inter-relationship of their percieved symptoms of fatigue with the environments of working area. 1) The difference of distribution of their percieved symptoms of fatigue according to the working department was significant; Production workers were higher than office workers. 2) The difference of distribution of their percieved symptoms of fatigue related with working posture was significant; Sitting: Musculo-Skeletal symptoms (p<0.05), Optical symptoms (p<0.005) 3) The more dissatisfied with their's own duty they were, the higher became the distribution of their percieved symptoms of fatigue (p<0.001. p<0.005, p<0.05) 4) The more dissatisfied with their working condition they were, the higher became the degree of their percieved symptoms of fatigue (p<0.001. P<0.05) 5) The difference of distribution of their percieved symptoms of fatigue according to kinds of job was significant: Workers who has handled heavy materials were higher than who had not handled $(p{\leqq}0.001$, p<0.05). Workers who has handled chemical materials: Optical, symptoms $(p{\leqq}0.001)$. Workers who has handled dusty materials: Respiratory symptoms (p<0.01) 6) The environment of working area was significantly affected to the distribution of their percieved symptoms of fatigue: Workers complains of a illumination problem; Optical symptoms (p<0.005), Heart symptoms (p<0.005) Workers complains of a ventilation problem: Heart symptoms (p<0.05), Optical symptoms, Heart symptoms (p<0.01) Musculo-skeletal symptoms ($p{\leqq}0.001$)

• Journal of Korean Library and Information Science Society
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• v.42 no.4
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• pp.243-262
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• 2011

The aim of this study was to investigate musculo-skeletal symtoms and working conditions of university library's librarians to search for the risk factors related to musculo-skeletal symptoms. The study subjects were 266 librarians who were working at 20 university libraries. A self-recording questionnaire was used to investigate the general characteristics, working conditions, job intensity, job satisfaction and stress, education of musculoskeletal disorders and nature of musculoskeletal symptom. Statistical analysis was done by using t-test and multiple regression analysis. The complaint proportion of self-reported positive musculoskeletal symptoms was 62.5% and that of severe musculoskeletal symptoms was 26.1%. Multiple regression analysis showed that low satisfaction of working conditions, high job intensity, irregular mealtime, job stress were closely related to the positive rate of musculoskeletal symptoms. Therefore, it will be necessary to make efforts to reduce the prevalence of musculoskeletal disorders improving working conditions and mitigating the job intensity.

• The Journal of Korean Obstetrics and Gynecology
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• v.23 no.3
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• pp.192-204
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• 2010

Purpose: Sanhupung's pathological conditions is different from non-postpartum's disease. So it is important to analyze Sanhupung's construction, onset factors and Oriental theraphy. Methods: We studied 104 Sanhupung women visiting $\bigcirc\bigcirc$ hospital form January 2008 to December 2009. We analyzed the general characteristics, kinds of symptoms and Oriental theraphy's present condition. Also We compared patients' age, the number of live births and delivery month to the National Statistical Office's results. Results: 1. Patients over the age of 30, who have one child and who gave birth in September(14.42%) and in Summer(43.26%) occupied the highest percentage. But delivery method was not correlated with Sanhupung. 2. Musculo-skeletal symptoms(42.13%) were the most common symptoms. Wrist, waist, knees(59.59%) were the most common pain areas and the other pain symptoms (40.21%) appeared a significant portion of cases respectively. 3. In the 21~30days after delivery, the most patients visited. The number of patients admitted within 30 days after delivery or within 90 days was small comparing with Sanhupung onset. Patients treated within 10 days(47.12%) and treated only herb medicine(54.90%) were the most common. And the patients responded satisfacion or over were 88.46%. Conclusion: Patients' age, the number of born babies, delivery time were correlated with Sanhupung symptoms, but the method of delivery was not associated. And musculo-skeletal symptoms were the most common symptoms. Sanhupung patient's treatment period and methods were limited.

• The Journal of Korean Obstetrics and Gynecology
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• v.33 no.4
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• pp.56-74
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• 2020

Objectives: The purpose of this study is to analyze the current characteristics of outpatients using herbal medicine for treating Sanhupung and provide treatment instructions in the clinical field. Methods: To analyze characteristics of outpatients with postpartum disease, I searched medical records from July 1, 2017 to June 30, 2020 using O94 (Sequelae of complication of pregnancy) in an oriental medicine hospital and 73 Sanpuhung patients were analyzed. Results: 1. The average age of Sanpuhung outpatients was 32.83±3.14 years old. The mean body weight difference between full-term pregnancy and visiting date was -7.79±4.23 kg. 2. The most chief complaints of Sanpuhung outpatients were musculo-skeletal symptoms in 57 (78.08%) patients followed by neuropsychiatric symptoms and circulatory symptoms. In musculo-skeletal symptoms, the most chief complaint area was wrist in 48 (65.75%) patients followed by waist, shoulder and knee. 3. 68 (93.15%) patients gave birth between 38 and 42 weeks of pregnancy, 33 (45.20%) patients gave birth by caesarean operation. Patients delivered in July visited the hospital most frequently for postpartum care. 4. 68 (93.15%) patients gave birth to single-born babies. The average birth weight was 3.13±0.45 kg. 5. In distribution from delivery to visitation period, the average was 65.08±103.2 days. The number of visits less than two times was 72 (98.63%). 6. A total of 73 outpatients got herbal medicine. Depending on the symptoms, herbal medicines were different from each other. Ikgibohyeol-tang-gagambang, Ojeok-san-gagambang and Gunggui-tang-gagambang were mostly used. Conclusions: These results could be helpful to treat Sanhupung patients in Korean gynecologic clinical fields.

• The Journal of Korea CHUNA Manual Medicine
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• v.4 no.1
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• pp.99-109
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• 2003

Dr. Lawrence H Jones developed innovative approach for the treatment of neuromuscular and musculo-skeletal disorders such as fibromyalgia, myofacial pain syndrome, any other muscle pain. This technique is called Strain/Counterstrain technique which uses effect of neuromuscular reflex for treatment of strain. First, Relieving spinal or other joint pain by passively putting the joint into its position of greatest comfort; secondly relieving pain by reduction and arrest of the continuing inappropriate proprioceptor activity. This was accomplished by markedly shortening the muscle that contains the malfunctioning muscle spindle by applying. mild strain to its antagonists. In other words, the inappropriate strain reflex is inhibited by application of counterstrain. Many other techniques have been developed for treating of muscle pain due to somatic dysfunction, but we want to introduce you to strain/counterstrain technique because this is basic concept and theory of Chum therapy for controling motor system.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.34 no.1
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• pp.97-102
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• 2011

This study was performed to design and develop an ergonomic equipment for strawberry sorting and packing in agricultural working environments. Potential risk of work related musculo-skeletal disorders associated with farm workers performing strawberry sorting and packing was analyzed through interviews, field surveys, work measurement, and working posture evaluation. For the evaluation of working posture, we used REBA, OWAS, and RULA assessment methods to identify multi-factorial risk factors. Based on the result of comprehensive assessment, a new concept of multi-level rotating table for strawberry sorting and packing was proposed to modify awkward working postures and improve the effectiveness of the farm work. Finally, the characteristics and effectiveness of new equipment was discussed in terms of improvements in productivity, safety, and subjective ratings of farm workers. The results of analysis showed that working conditions improved significantly.

• Journal of Korean Neurosurgical Society
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• v.49 no.4
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• pp.234-236
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• 2011

Lumbar spinal stenosis (LSS) is a common spinal disease in the elderly. The cardinal symptom of LSS is neurogenic claudication, but not all patients present with such typical symptom. The clinical symptoms are often confused with symptoms of peripheral neuropathy, musculo-skeletal disease and other medical conditions in elderly patients. In particular, LSS presenting with rapid progression of leg weakness must be distinguished from other combined diseases. We report a case of rapid progressive leg weakness in a patient with LSS and iatrogenic adrenal insufficiency that was induced by obscure health supplement.

• Proceedings of the KSME Conference
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• 2007.05a
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• pp.837-842
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• 2007

Since construction materials have been towards larger and heavier, the rate of accident associated with installation works of heavy construction materials is increasing. Installation works of heavy construction materials lead to frequent accidents, increasing the WMSDs(Work-Related Musculo-Skeletal Disorders) in construction site. In case of installation work of heavy glass ceiling, the rate of accidents such as falling and collision is increasing as well. This paper describes a ergonomic design of working platform(deck) in a glass ceiling installation robot. As well as, a design of working process is considered to accomplish an efficient installation work. As a result of the design, an installation work of heavy glass ceiling by the robot will be expected safety assurance and retrenchment of the construction cost and period.

• Journal of Korean Physical Therapy Science
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• v.10 no.2
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• pp.163-172
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• 2003

Background and Purpose. Physical therapists are at risk for work-related musculoskeletal disorders (WMSDs). Little understand the characteristics of work in physical therapist or the effort they take to prevent injury. The purpose of this study was to investigate the characteristics of work in physical therapist and the efforts for prevent injury Subjects. Standardized questionnaire was administered to 103 physical therapist in Pusan association. Methods. An questionnaire was given to each subject. Questions investigated the characteristics of work in physical therapist, efforts and caring of injury prevention. Chi-square Test used to assess the association of general characteristics with the characteristics of work in physical therapist. AVONA and T-test used to assess the association of efforts of prevent injury in independent variable Results. Physical therapist was reported a higher prevalence of WMSDs in most body areas. These attributes sometimes resulted in behaviors that contributed to the development of their WMSDs.