자세에 따른 어깨관절 굽힘 각도가 악력에 미치는 영향

이삼철,김봉환,정재우,Lee, Sam Cheol,Kim, Bong Whan,Woo, Jung Jae 대한물리치료과학회 2013 대한물리치료과학회지 Vol.20 No.1

Background and purpose : The shoulder joints permit the greatest mobility of any joint area carries out the important function of stabilization for hand use. Research has now shown that grip strength has proven to be a reliable indicator for quality of life at an older age. The purpose of this study was to investigate the effects of testing posture and shoulder position on grip strength for repetitive gripping task. Methods : Forty(20male, 20female) college adult volunteers with no known shoulder dysfunction participated subject in two testing posture(sitting and standing) and three positions with shoulder flexion: (1) shoulder $0^{\circ}$ flexion (2) shoulder $90^{\circ}$ flexion (3) shoulder $180^{\circ}$ flexion. The paired t-test was used to determine any significant difference in grip strength between the testing posture and shoulder position. Results : The higher grip strength gained in the sitting with the shoulder $180^{\circ}$ flexion and the higher grip strength gained in the standing with the shoulder $180^{\circ}$ flexion. The second experiment showed that the grip strength was significant for sitting, standing position of shoulder $0^{\circ}$ flexion( p<0.05). Grip strength goes up as increase height and weight. Conclusion : These findings demonstrate that the theory does not fit with, because of the influence of gravity, a measure from the shoulder joint is the most high, $0^{\circ}$. And sitting posture and stance in the grip of a difference when compared SIT $0^{\circ}$ and standing position $0^{\circ}$ significant difference in indicated but, $90^{\circ}$ and $180^{\circ}$ in the sitting position and stance in the grip of the difference was not significant difference. To demonstrate the universality of this study's results, future studies should have a larger and more subject as well as a more even distribution of male and female subject. Therefore future research is needed to refine the definition and identify optimal methods of measuring this grip strength.

공간 확장형 캠핑 트레일러 구조의 개발

이삼철,권오성 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.2

The size of the camping trailer will bring the area of the camping trailer more space. The various types of expandable RV or camping trailers are available to ensure a wider camping space. In this study, we aim to provide technology to produce new types of products. This will ensure a wide range of camping space while, also, facilitating mobile traction, which includes the development of functional, convenience, and aesthetic product design. This will satisfy a wide range of consumer and their diverse needs. As a result, the body weight of less than 500 kg was achieved by weight in the design and manufacturing process of the product. Consumers will be satisfied because they can obtain an abundant amount of camping space.

동물용 정형외과 임플란트의 전방향 변형구조의 설계

이삼철,권오성 한국기계기술학회 2020 한국기계기술학회지 Vol.22 No.3

Animal orthopedic implants are an area that has recently been come into the light due to growing number of single-person households and increasing of interest in pets. The purpose of this study was to investigate a method to design and manufacture a bushing in a desired direction and angle with the environment of use, while the bone joint plate could be stably deformed during animal fracture surgery. It was found that the bone joint plate was capable of deformation in all directions and was designed to be transformed to the desired angle without degrading the basic properties of bending strength. Also, it was found that the bushing-type bone joint plate could be controlled in multiple directions and angle at omni-directional movements(0°-360°) and 0°-10° moving forward, backward and side to side.

20대 성인 흡연자의 조깅운동이 심장호흡기능에 미치는 영향

이삼철,Lee, Sam-Cheol 대한물리치료과학회 2016 대한물리치료과학회지 Vol.23 No.1

Background and Purpose : Effects of smokers's jogging exercises on oxygen uptake, ventilation, heart rate, and vital-capacity of normal adults have not been studied in details on. In this study, people that had completed the established jogging exercises was selected for the study. We could examine the effects of imposed jogging in smokers who might be considered by an experienced physical therapist to be well practiced and proficient in this exercises. Subjects and Methods : A total number of 24 young healthy subjects participated in a randomized crossover controlled study and completed the study. The subjects of this study were divided into jogging and controlled groups which were composed 14 people respectively. The members of exercise group had jogging exercises 50 minutes a day, five times a week, for 5 weeks in same conditions, otherwise controlled group did not. Results : The results of this study were as follows. The jogging group demonstrated significant increases in cardiopulmonary function, vital-capacity and exercise capacity, compared with control group, which demonstrated no change in baseline measurements of 5 weeks. Conclusion : Jogging exercises can increase cardiopulmonary function in people after they have undergone successful PA. These results suggested that it was improved on cardiopulmonary function and lung capacity, since jogging exercise had. The results of this study could be applied for valuable criterion cardiopulmonary function. It is necessary to selects in various groups of the purpose of enhancing confidence in of this research.

외부흐름 중공사 막형 인공폐의 액체흐름과 압력손실

이삼철,김기범 대한의용생체공학회 2002 의공학회지 Vol.23 No.1

본 연구에서는 혈관내 혈액 흐름의 압력손실을 최소화하여야 하는 제한 인자를 만족하는 새로운 막형 인공폐에서 액체흐름경향과 중공사 개수에 대한 압력손실 영향을 고찰하고자 하였다 막형 인공폐는 380 $\mu m$의 중공사 외경과 600 mm의 축 방향 길이를 갖는 수 백 개의 중공사로 이루어진 다발이다 중공사 다발은 8가지로 변화시켰으며 흐름은 펌프를 이용하여 조절하였다 혈액대용물질로 글리세롤 용액과 물을 사용하여 압력손실을 측정하였으며 동일한 흐름 경향을 각 중공사들에서 얻었다. 700개의 중공사로 이루어진 막형 인공 폐의 외부 압력손실은 13-16 mmHg이었으며 중공사 개수의 감소에 따른 마찰계수는 중공사와 액체와의 효과적인 접촉이 일어나므로 증가되었다. The purpose of this study was to evacuate the effects of the number of tied hollow fibers in a novel membrane oxygenator that satisfied the limiting factor of minimizing the friction loss in the intravascular blood flow Pattern. The membrane oxygenator is a bundle consisted of several hundred ho1low fibers haying the outside diameter of 380 $\mu m$ and the axial jacket length of 600 mm. The eight different variation of tied hollow fibers in a bundle were designed. and the liquid flow pattern was controlled by a pump. The liquid pressure drop was measured by in vitro experiments using water and g1ycero1. Uniform blood flow pattern was observed for each number of tied hollow fibers. Pressure drop was 13-16 mmHg outside of the membrane oxygenator consisting of up to 700 ho1low fibers. More effective contact of liquid with the tied ho1low fibers was observed as a decrease in the number of the tied hollow fibers. and resulted in the enhancement of the friction tractor

전력산업기술기준(KEPIC) 개발 현황 및 전망

이삼철 대한전기협회 2002 전기저널 Vol.- No.302

풍선불기와 상복부운동이 호흡재활에 미치는 영향

이삼철,신승호,정재연,오상부,김상호,김봉환,손경현,Lee, Sam-Cheol,Sin, Seung-Ho,Jung, Jae-Youn,Oh, Sang-Boo,Kim, Sang-Ho,Kim, Bong-Hwan,Son, Kyung-Hyun 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.3

Background : Pulmonary rehabilitation, called pulmonary rehab or PR, is a broad program that helps improve the well-being of people who have chronic (ongoing) breathing problems. Purpose : The purpose of this study was to demonstrate the effects of the upper abdominal exercise and balloon blow-up on the abdominal muscle strength and Respiratory ability for 20's adults. Method : Recruited Subjects were healthy students attending H university. Twenty-one subjects who agreed to participate in this study were randomly assigned to 3 groups; I group applied upper abdominal exercise, IIgroup applied balloon blow-up, III group applied both upper abdominal exercises and balloon blow-ups. Upper abdominal muscle exercises was applied supine position and $30^{\circ}{\sim}40^{\circ}$ in the upper body lift braced for about 3 seconds, and balloon blow-ups was performed 10 times a day. The exercise programs were performed three times a week for 5 weeks. Results: After 5 weeks of exercises, all three groups were comparable with abdominal muscle strength and respiratory ability. Subjects in upper abdominal exercise group, balloon blow-ups group, and upper abdominal exercises and balloon blow-ups group had significantly increased the average of abdominal muscle strength(p<.05) The statistical comparison among the groups indicated that there was a signigicant increase in respiratory ability. In comparison of abdominal muscle strength and respiratory ability, there were no significant differences among 3 groups. Conclusions: These findings suggest that upper abdominal exercises and balloon blow-ups may have a significant impact in abdominal muscle strength and respiratory ability.

소동물 골절치료용 초소박막형 임플란트 제조공정의 개발

이삼철,권오성 한국기계기술학회 2020 한국기계기술학회지 Vol.22 No.3

The purpose of this study was to established the manufacturing process technology of an ultra-thin, multi-functional micro-implant(MFMI) that was optimized in fractured small animals, not mainly large animals. The test results showed a reckon type plate was more suitable than a straight plate because of excellent deformation energy. It was found that the structure of the hole and the screw could be fastened in all directions with the limited contact design of the threaded part cut off in 4 directions. It was possible to manufacture a reckon type plate reflecting the neck part of 2.0 mm width. It was confirmed that the plate hole could be stably and easily deformed and fastened without damaging the hole through the round type bending device.

20대 흡연자와 비흡연자의 호흡근 강화 운동에 따른 호흡능력의 변화

이삼철,정철현,이은숙,이해호,정영환,채혜진,최정아,이현철,오상부,손경현,Lee, Sam-Cheol,Jung, Chul-Hyun,Lee, Eun-Suk,Lee, Hae-Ho,Joung, Young-Hwan,Chae, Hye-Jin,Choi, Jung-A,Lee, Hyun-Chul,Oh, Sang-Boo,Son, Kyung-Hyun 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.3

Background : Smoking reduces the ability of the lungs to function. In particular, smoking reduces the vital capacity of the lungs, which is the amount of air the lungs can take in. This reduction in vital capacity has several important health effects. Purpose : The purpose of this study, therefore was to examine the effects of the respiratory muscle exercise on peak expiratory flow and respiratory muscle strength. Methods : For an experimental research design, it was employed 20 young healthy subjects and these subjects were assigned into two groups; a smoking group(n=10) and an non-smoking group(n=10). All groups were participated in respiratory muscle exercises twice a week for 5 weeks in same condition. For comparison between before and after for post treatment, it was analysed as paired t-test and ANCOVA. Results : The result of this study were as follows; In the case of smoking group, there were significant differences, from $427.77{\pm}76.61$ l/min to $526.66{\pm}58.52$ l/min of peak respiratory flow, from $94.33{\pm}22.07$ kg to $102.16{\pm}21.60$ kg of abdominal muscle strength between the before and the after of respiratory muscle strength exercises. In the case of nonsmoking group, there were significant differences, from $449.54{\pm}77.47$ l/min to $553.18{\pm}61.32$ l/min of peak respiratory flow, from $93.41{\pm}19.21$ kg to $101.58{\pm}18.92$ kg of abdominal muscle strength between the before and the after of respiratory muscle strength exercises. Conclusion : These results were suggested that the peak respiratory flow and muscle strength were improved after respiratory muscle strength exercises.

플라즈마 중합 처리된 중공사 막의 혈액 적합성

이삼철,권오성 한국막학회 2005 멤브레인 Vol.15 No.3

유용하고 중요한 의료기기인 폐 보조 장치(LAD)의 혈액 접촉 표면과 인공 폐 막에 사용하기 위한 혈액 적합성 생체 재료를 개발하기 위해 폴리프로필렌 중공사 막의 표면 개질을 수행하였다. 재료의 혈액적합성은 항응고 처리된 혈액을 사용하였고 플라스마 응고 형성, 혈소판 접착 및 플라스마 응고 활성화, 그들의 표면 혈전 형성을 평가하여 결정하였다. 실험 결과는 실리콘 코팅 중공사들에 부착한 혈소판 수가 우수한 혈액 적합성을 나타내는 폴리프로필렌에 부착한 혈소판 수보다도 상당히 더 낮았음이 확인되었다. 또한, 상대적으로 플라스마 표면 처리한 폴리프로필렌 중공사 막이 혈액 적합성 평가에서 보체 활성화 억제를 보였음이 확인되었다. Surface modification of polypropylene hollow fiber membranes was performed in order to develop blood-compatibility biomaterials for use in the blood contacting surfaces and oxygenation membranes of a lung assist device (LAD), important medical device even more useful. Blood compatibility of materials was determined by using anticoagulation blood and evaluating formation of blood clots on their surfaces as well as activation of plasma coagulation cascade, platelet adhesion, and aggregation. It was verified that the number of platelets on the silicone coated fibers was significantly lower than that on untreated fiber membrane, indicating improved blood compatibility. It was also found that the polypropylene hollow fiber membranes using plasma treatment exhibited suppression of complement activation in blood compatibility test.