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RISS 인기검색어
- 검색키워드
- 저자 : Huikyeong Kim (검색결과 4 건)
- 무료
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Correlation between Affected Arm Muscle Activity and Global Synkinesis in Patients with Stroke
Jeongil Kang,Huikyeong Kim,DaeKeun Jeong 국제물리치료연구학회 2019 Journal of International Academy of Physical Ther Vol.10 No.3
Background: Although there are interventions available for the improvement of arm functions of patients with stroke, measuring changes in global synkinesis (GS) according to changes in the muscle activity of paretic and nonparetic side muscles is an important factor and studies to investigate such potential factors are evaluated necessary. Objective: To examine the correlation between the affected arm muscle activity and GS changes in patients with stroke. Design: Randomized controlled trial Methods: In order to measure muscle activities of 30 stroke patients, anterior deltoid, posterior deltoid, biceps brachii and triceps brachii of the affected arms were measured using surface electromyography (EMG) and for analyzing GS, biceps brachii and triceps brachi of the affected arms were measured using the same instrument. Results: When the correlations between the muscle activity and GS of the affected arm were analyzed, the results showed significant correlations between the posterior deltoid and the triceps brachii(p < .01) and between the triceps brachii and GS(p < .05). Conclusion: : The results of this study suggest that the efficient movements of the affected arms of stroke patients, it is possible to increase extensor activity by improving smooth antagonism of the arm.
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Correlation between Affected Arm Muscle Activity and Global Synkinesis in Patients with Stroke
Kang, Jeongil,Kim, Huikyeong,Jeong, DaeKeun International Academy of Physical Therapy Research 2019 Journal of International Academy of Physical Ther Vol.10 No.3
Background: Although there are interventions available for the improvement of arm functions of patients with stroke, measuring changes in global synkinesis (GS) according to changes in the muscle activity of paretic and nonparetic side muscles is an important factor and studies to investigate such potential factors are evaluated necessary. Objective: To examine the correlation between the affected arm muscle activity and GS changes in patients with stroke. Design: Randomized controlled trial Methods: In order to measure muscle activities of 30 stroke patients, anterior deltoid, posterior deltoid, biceps brachii and triceps brachii of the affected arms were measured using surface electromyography (EMG) and for analyzing GS, biceps brachii and triceps brachi of the affected arms were measured using the same instrument. Results: When the correlations between the muscle activity and GS of the affected arm were analyzed, the results showed significant correlations between the posterior deltoid and the triceps brachii(p < .01) and between the triceps brachii and GS(p < .05). Conclusion: : The results of this study suggest that the efficient movements of the affected arms of stroke patients, it is possible to increase extensor activity by improving smooth antagonism of the arm.
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Jeongil Kang,Huikyeong Kim,Daekeun Jeong,Seungkyu Park,Daejung Yang,Jeho Kim,Youngjun Moon 국제물리치료연구학회 2020 Journal of International Academy of Physical Ther Vol.11 No.1
Background: Multifaceted approaches will be needed, such as global synkinesis (GS) achieve functional improvements in the arms of stroke patients from involuntary movements during exercise. Objective: To identify changes in arm GS and muscle activity, functional evaluation and the correlation with variables through action observation training, combined with functional electrical stimulation (FES), thereby verifying the effect on stroke patients. Design: A quasi-experimental study. Methods: The subjects of this study were 20 stroke patients who were divided into two groups: Control group (n=10) and experimental group (n=10). Before the intervention, arm GS and muscle activity were measured using surface electromyography (EMG), and arm function was evaluated using the Fugl– Meyer Assessment (FMA) scale. At the end of the intervention, which lasted 4-wk, arm GS and muscle activity were measured again using the same scale. Results: There was a decrease statistically significant difference in GS during the bending action in experimental group (P<.01). Both groups showed a significant difference increased only in the activity of the anterior deltoid (AD) and biceps brachii (BB) (P<.05). The results of the arm functional assessment revealed a significant difference increase in both groups (P<.05). In the between-group comparison, there was a significant difference decrease in GS during the bending action (P<.05). Only the muscle activity of the AD and BB were significantly increase different (P<.05). There was a significant betweengroup difference increase in the arm functional assessment (P<.05). There was a positive correlation between GS and muscle activity on the FMA in the control group (r=.678, P<.05). In experimental group, GS during the bending arm action exhibited a negative correlation (r=-.749, P<.05), and the muscle activity of the AD and BB showed a positive correlation (r=.701, P<.05). Furthermore, in experimental group, the activity of the extensor carpi radialis increased, and the activity of the flexor carpi radialis decreased, which exhibited a negative correlation (r=-.708, P<.05). Conclusion: These results suggest that brain plasticity could be more efficiently stimulated by combining surface stimulation in the affected arm of stroke patients.
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미모사 경촉 반응을 모사한 인공근육의 해석 · 실험 · 설계
김주희(Juhui Gim),명지영(Jiyoung Myung),전지나(Jina Jeon),성재경(Jaekyoung Sung),고민정(Minjung Go),김희경(Huikyeong Kim),임현지(Hyunji Lim),안창선(Changsun Ahn) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
This paper presents design of an artificial muscle inspired from leaf movements of Mimosa pudica, a sensitive plant. Mimosa pudica’s leaflets quickly contract by the osmosis pressure in the pulvinus when the leaflets are stimulated. The osmosis pressure of Mimosa pudica is based on Potassium ions and the contraction of leaflets happens in few seconds thanks to their high flux membranes. We analyze fast osmosis reactions of Mimosa pudica and design an exemplary artificial muscle based on the analysis results to mimic the fast osmosis responses. For the analysis of the fast osmosis responses, the osmosis phenomenon is mathematically modeled, analyzed and verified through several experiments. The analysis showed that the fast osmosis responses require large diffusion coefficient with high-flux membrane or small volume to surface ratio of osmosis system. Such high-flux membranes, as the Mimosa pudica’s membrane, are practically unavailable, we design micro-scaled system to achieve a small volume to surface ratio. The contraction and relaxation of the artificial muscle are realized by changes of local concentration of Potassium ions that can be aggregated by the controllable electric field. As a result, the designed artificial muscle shows speedy reactions as Mimosa pudica does.
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