http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
〈속보논문〉 가속도계를 이용한 마비환자의 보행이벤트 검출
孔世鎭(Se-Jin KONG),金哲承(Chul-Seung KIM),文基旭(Ki-Wook MOON),嚴光文(Gwang-Moon EOM),卓?來(Gye-Rae TACK),金敬燮(Kyeong-Seop KIM),李定桓(Jeong-Whan LEE),李永熙(Young-Hee LEE) 대한전기학회 2007 전기학회논문지 Vol.56 No.5
The purpose of this study is to develop a practical gait-event detection system which is necessary for the FES (functional electrical stimulation) control of locomotion in paralyzed patients. The system is comprised of a sensor board and an event recognition algorithm. We focused on the practicality improvement of the system through 1) using accelerometer to get the angle of shank and dispensing with the foot-switches having limitation in indoor or barefoot usage and 2) using a rule-base instead of threshold to determine the heel-off/heel-strike events corresponding the stimulation on/off timing. The sensor signals are transmitted through RF communication and gait-events was detected using the peaks in shank angle. The system could detect two critical gait-events in all five paralyzed patients. The standard deviation of the gait events time from the peaks were smaller when 1.5㎐ cutoff frequency was used in the derivation of the shank angle from the acceleration signals.
孔世鎭(Se-Jin Kong),嚴光文(Gwang-Moon Eom),金哲承(Chul-Seung Kim),朴寬龍(Kwan-Yong Park) 대한전기학회 2006 전기학회논문지 D Vol.55 No.5
The purpose of this study is to develop a portable gait-event detection system which is necessary for the cycle-to-cycle FES(functional electrical stimulation) control of locomotion. To make the system portable, we made following modifications in the gait signal measurement system. That is, 1) to make the system wireless using Bluetooth communication, 2) to make the system small-sized and battery-powered by using low power consumption μP(ATmega8535L). The gait-events were analyzed in off-line at the main computer using ANN(Artificial Neural Network). The Proposed system showed no mis-detection of the gait-events of normal subject and hemiplegia subjects. The performance of the system was better than the previous wired-system.
관절계 역학적 특성의 정량적 평가를 위한 낙하 장치의 개발
공세진 ( Se Jin Kong ),엄광문 ( Gwang Moon Eom ) 한국감성과학회 2004 추계학술대회 Vol.2004 No.-
본 연구에서는 관절계 역학적 특성을 정량화 하기 위한 슬관절의 수동 진자실험에서의 문제점이었던, 슬관절 초기각도 및 낙하시점의 정확성을 개선하는 것을 목표로 한다. 따라서 하퇴의 낙하 초기 각도와 그 시점을 제어 할 수 있는 시스랩을 설계 및 제작하였고, Labview프로그램을 통하여 제어 하였다. 그에 따라 측정 시스템의 정확성이 개선된 것을 실험을 통해 확인하였다.
펜싱 런지 동작에서 주동다리와 비 주동다리의 운동역학적 특성
공세진 ( Se Jin Kong ) 한국스포츠정책과학원(구 한국스포츠개발원) 2014 체육과학연구 Vol.25 No.3
본 연구의 목적은 스포츠 영역에서 순간적인 신체의 이동 방법으로 많이 활용되는 런지 동작의 수행력에 미치는 요인을 근전도 분석이 포함된 운동역학적 분석을 통하여 규명하는 것이다. 숙련된 14명의 펜싱 선수를 대상으로 피험자가 제자리에서 최대한 멀리 나아갈 수 있는 킥 런지를 수행하게 하고 이를 3차원 동작분석기와 근전도 시스템을 적용하여 분석하였다. 킥 런지의 사전 동작이 포함된 동작과 그렇지 않은 동작을 구분하였고 이를 주동다리와 비 주동다리에서 모두 실시하였다. 이 연구의 결론은 다음과 같다. 사전 동작이 포함된 런지에서 보다 높은 수행력을 보였다. 또한 숙련도가 높아질수록 런지의 길이가 길어지는데 여기서 오는 충격량을 제어하기 위한 기전으로 운동 수행 시간을 단축하는 전략적 기전이 사용 되는 것으로 보인다. 이와 더불어 주동다리의 동작에서 모멘트와 파워 등의 역학적 변인의 차이가 나타났는데 이는 근육을 동원하는 유기적 능력의 차이에서 기인하는 것으로 보인다. The purpose of this research is to investigate the factors affecting the performance capability of lunge movements by performing lunge movements which are commonly used as a method of instant physical movement in sports with a kinetic analysis including an EMG analysis. This research targeted 14 skilled fencers and made the subjects perform kick-lunges which allow them to go farthest from their positions and performed an analysis on such, applying a 3D motion analysis system and an EMG system. The subjects performed kick-lunges in two movements; one with a preliminary movement and the other without it and those are performed with both dominant leg and non-dominant leg. The result of this research is as follows. The lunges with a preliminary movement showed higher performance capability than those without it. Furthermore, as the level of skills gets higher, the length of lunges gets longer, and it seemed that a tactical mechanism shortening exercise performance times was used as a mechanism to control the impulse coming from such lengthened lunges. In addition, a difference appeared in mechanical factors such as moment and power in a dominant leg movement and it seemed to result from a difference in an functional capability using muscles.
워킹화 기능 개선을 위한 보행 속도에 따른 중년 여성의 하지 동작 특성 연구
공세진 ( Se-jin Kong ),이정호 ( Jung-ho Lee ),임규찬 ( Kyu-chan Lim ),김진현 ( Jin-hyun Kim ) 한국스포츠정책과학원(구 한국스포츠개발원) 2016 체육과학연구 Vol.27 No.2
본 연구의 목적은 중년 여성의 보행 속도에 따른 하지 동작의 특성을 밝히고 보행 안정성 향상을 위한 워킹화의 기능 개선 요소를 제안하는 것이다. 건강한 중년여성 30명을 대상으로 자기가 선호하는 속도와 선호 속도에 20% 빠른 속도의 보행을 수행하도록 하였다. 3차원 동작 측정시스템과 족저 압력 측정 시스템을 이용하여 동작 특성을 계측하였다. 선호 속도와 빠른 속도의 동작 차이 분석을 위하여 종속표본 t-검증을 수행하였다. 이 때, 유의수준은 α=.05로 설정하였다. 빠른 걸음의 보행이 선호 속도의 보행보다 발의 지면 접지각이 컷고, 동작 안정성이 낮았다. 또한 빠른 보행에서 큰 족저압력이 계측 되었으며 특히 엄지발가락의 압력이 높았다. 빠른 보행에서의 신체 안정성과 발의 압력 분산을 위한 신발의 기능 개선이 필요할 것으로 판단된다. The objective of this study was to reveal the characteristics of lower extremity motions of middle-aged women in accordance with their walking speed, and also to suggest elements of improving functions of walking-shoe for the improvement of gait stability. Total 30 healthy middle-aged women were asked to walk in their preferred speed and also speed 20% faster than that. Using the 3D motion capture system and the plantar pressure measuring system, the characteristics of lower extremity motions were measured. For the analysis on differences in motions between preferred and faster speeds, the paired t-test was performed. At this time, the significance level was set up as α=.05. The walking in faster speed showed the greater ground contact angle than walking in preferred speed while its gait stability was low. Also, the faster walking showed the bigger plantar pressure, and especially, the pressure on the great toe was high. It would be necessary to improve functions of shoes for the gait stability and dispersion of pressure on feet while fast walking.
편마비 환자의 족하수에 운동성 테이핑 적용이 보행능력에 미치는 영향
정삼희,공세진,윤정규,Jung, Sam-Hee,Kong, Se-Jin,Yoon, Jung-Gyu 대한물리치료과학회 2000 대한물리치료과학회지 Vol.7 No.2
Objective: This study is designed to examine how an application of a kinesio taping to the foot drop of a hemiplegic patient affects the functional recovery of a gait. Method: The patient was a man with left hemiplegia of about 11 months' duration. a single subject design (ABAB design) was used to investigate the timing difference at a stance phase between an unaffected side and an affected side in the gait ability of the hemiplegic patient by using the kinesio taping. The study was divided into four phase: an initial base-line, an experimental, a second base-line, and second experimental phase. Result: The timing difference at a stance phase between an unaffected side and an affected side in the gait was decreased in the case of the affected side by following the result of applying the kinesio taping to a lower extremity. Conclusion: The kinesio taping applied to the foot drop of a hemiplegic patient affects the improvement of the gait ability.
이소연(Lee, So-Youn),공세진(Kong, Se-Jin) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.4
The purpose of this study is to evaluate the differences between the balance variables(COM) and muscle activities of club and national team cheerleading flyers while performing Liberty, Heel Stretch and Arabesque sequence, Eight cheerleading flyers (4 national team member, 4 club member) participated in this study. Motion capture system with a ten cameras (Vicon T-series, Vicon inc, UK) synchronized with a wireless EMG system (Delsys Trigno, Delsys Inc, USA), force plate (AMTI, USA) was used for this study. Flyers were tested at three different base conditions (no spring, 6㎝, 9㎝ spring). Balance variables chosen as movement performing time and Medio-Lateral, Anterior-Posterior COM distance calculated for 3 movement and total COM distance for the sequence as a whole. Integrated EMG data were collected from tibialis anterior and soleus muscles. Muscle activation levels reported as the percentage of MVC. There was no statistically significance difference between the national and dub team flyers for both balance variables and EMG. Only COM distance showed statistically difference for different base conditions.
저속 후방 추돌 자원자 실험을 통한 두부와 경부의 동작분석
홍성우,박원필,박성지,유재호,공세진,김한성,Hong, Seong Woo,Park, Won-Pil,Park, Sung-Ji,You, Jae-Ho,Kong, Sejin,Kim, Hansung 한국자동차안전학회 2012 자동차안전학회지 Vol.4 No.2
The purpose of this research is to obtain and analyze dynamic responses from human volunteers for the development of the human-like mechanical or mathematical model for Korean males in automotive rear collisions. This paper focused on the introduction to a low-speed rear impact sled test involving Korean male subjects, and the accumulation of the motion of head and neck. A total of 50 dynamic rear impact sled tests were performed with 50 human volunteers, who are 30-50 year-old males. Each subject can be involved in only one case to prevent any injury in which he was exposed to the impulse that was equivalent to a low-speed rear-end collision of cars at 5-8 km/h for change of velocity, so called, ${\Delta}V$. All subjects were examined by an orthopedist to qualify for the test through the medical check-up of their necks and low backs prior to the test. The impact device is the pendulum type, tuned to simulate the crash pulse of a real vehicle. All motions and impulses were captured and measured by motion capture systems and pressure sensors on the seat. Dynamic responses of head and T1 were analyzed in two cases(5 km/h, 8 km/h) to compare with the results in the previous studies. After the experiments, human subjects were examined to check up any change in the post medical analysis. As a result, there was no change in MRI and no injury reported. Six subjects experienced a minor stiffness on their back for no more than 2 days and got back to normal without any medical treatment.