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보행 재활 훈련을 위한 인체 착용형 외골격 장치와 이동기기 결합형 시스템 개발에 관한 연구
이범기(BumKee Lee),전경진(KyungJin Chun),임도형(DoHyung Lim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
The aims of this study are to evaluate the joint angle coordination patterns to identify feasibility of a gait rehabilitative training assistance in our moving system developed newly based on wheelchair platform incorporated with the specific function. The newly developed moving system is named S-MSGRTF (Sejong-Moving System with Gait Rehabilitative Training Function). Seven healthy participants [males, 23±2 years, 174±6cm height, 71±12kg weight, 23±4kg/m2 BMI] were examined with a 3D motion capture system (VICON T10s, UK). All participants were free from musculoskeletal disorders and leg pain. Participants walked without/with wearing S-MSGRTF at a natural gait and a S-MSGRTF gait speed. These findings indicate that S-MSGRTF may have a potential to be applicable as a gait rehabilitative training assistance incorporated with wheelchair platform for movement, although it doesnt realize a natural gait completely, particularly in the knee and ankle joint angle coordination pattern.
직선 및 회전 보행 시 편마비에 따른 고령자의 보행 특성 변화
정호현,이범기,전경진,임도형,Jung, HoHyun,Lee, BumKee,Chun, Kyeong Jin,Lim, Dohyung 대한의용생체공학회 2014 의공학회지 Vol.35 No.2
Little information is available about the characteristics in revolution gait of hemiplegic elderly, which is frequently represented in daily life. It is also hard to elucidate purely the characteristics due to hemiplegia because of no consideration of aging factors. The aim of study is to identify the alteration characteristics of lower extremity joint angles in both straight and revolution gaits together due to hemiplegia through comparing healthy with hemiplegic elderly. Following Institutional Review Board approval, twelve healthy and hemiplegic elderly were participated and the center of body mass (COM) and lower extremity joint angles were measured during straight and revolution gaits using a computer-aided video motion capture system. The results showed that the gait characteristics were generally altered in both straight and revolution gaits due to hemiplegia (p < 0.05). The gait characteristics were then different between the straight and revolution gaits each other. This study may be valuable by identifying for the first time the alterations of the lower extremity joint angles in both straight and revolution gaits due to pure hemiplegia through comparing healthy elderly with hemiplegic elderly.
전후방 및 내외측 방향의 동적 움직임에 따른 균형 및 근육 활성도 특성
김충연,정호현,이범기,정덕영,전경진,임도형,Kim, ChoongYeon,Jung, HoHyun,Lee, BumKee,Jung, Dukyoung,Chun, Kyeong Jin,Lim, Dohyung 대한의용생체공학회 2013 의공학회지 Vol.34 No.4
Falling is one of the major public problems to the elderly, resulting in limitations of daily living activities. It can be induced by the functional loss of the balance ability and muscle strength in the elderly. It has been, however, not well investigated to suggest an effective methodology improving the balance ability and muscle strength for the prevention of the falling due to lack of information about the characteristics of the balance and muscle activations responded to the dynamic motions. The aim of the current study is, therefore, to identify the characteristics of the balance and muscle activations responded to the dynamic motions in Anterior-Posterior(AP) and Medial Lateral(ML) directions. For that, a motion capture system with eight infrared cameras, surface electromyogram system and Wii Fit system with a customized variable unstable base were used and kinematic and kinetic data obtained from the systems were analyzed for five healthy male($24.8{\pm}3.3years$, $177.4{\pm}2.0cm$, $73.9{\pm}12.9kg$, $23.5{\pm}4.0kg/m$). The results showed that the characteristics of the balance and muscle activations were differently responded to between the dynamic motions in Anterior-Posterior(AP) and Medial Lateral(ML) directions. These findings may indicate that customized dynamic motions should be applied to the training of the balance ability and muscle strength for the effective prevention of the falling. This study may be meaningful to providing basic information to establish a guideline improving effectively the balance ability and muscle strength.