• 대한치과보철학회:학술대회논문집
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• 2000.11a
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• pp.68-68
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• 2000

• Journal of Dental Rehabilitation and Applied Science
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• v.26 no.2
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• pp.169-178
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• 2010

Objective. This study was conducted to observe the effect on appendage muscle strength according to increase in occlusal vertical dimension. Materials and methods. Ten males with a mean age of 21 were selected. The tested occlusal splints were made at the position of increased occlusal vertical dimension of 2mm,3.5mm and 5mm from the intercuspal position. Before and after wearing occlusal splints, the appendage muscle strength were tested by Cybex II dynamometer (Lumex Inc., Ronkonkoma, NY, USA). Results. Statistical analysis using the paired t-test revealed significant differences for flexion and extension of the hip, pronation of the forearm, internal rotation of the shoulder, external and internal rotation of the knee, and dorsiflexion and plantarflexion of the ankle (p<0.05). Conclusions. As the result of this study, we conclude that when occlusal vertical dimension was increased, most of mean muscular strength values were increased. Especially at the position of 3.5mm increased vertical dimension displayed the highest mean muscular strength value than other positions.

• Journal of Korean Academy of Nursing
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• v.38 no.5
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• pp.730-738
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• 2008

Purpose: The purpose of this study was to identify the mediating effect of depression in the relationship between muscle strength of extremities and falls among community-dwelling elderly. Methods: Two hundred forty-seven participants were recruited from a public health center, a hall for the aged and a school for the aged in B city. Face-to-face interviews were conducted using questionnaires from May to September of 2007. Data was analyzed with descriptive statistics, Pearson correlation, and multiple regression using the SPSS WIN 14.0 program. Results: There was a significantly negative relationship between muscle strength of lower extremities and falls, muscle strength of left upper extremity and falls, and muscle strength of right upper extremity and falls. Depression positively correlated with falls. Depression showed mediating effects between muscle strength of extremities and falls. Weakness of muscle strength of extremities increased depression and the increased depression increased the frequencies of falls. Conclusion: For the effective management and prevention of community-dwelling older adults' falls, exercise programs including depression-decreasing strategies should be established. These exercise programs can decrease depression which is the mediator role between the degrees of muscle strength of extremities and falls.

• Journal of Biomedical Engineering Research
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• v.22 no.2
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• pp.151-156
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• 2001

A computer model of the musculoskelotal system that provides accurate prediction of muscle force and body movement trom the stimulation input is desired for the effective control system design in FES. This paper aims to investigate the fundamental properties of the gradual muscle force potentiation that was not included in the previous muscle models, for future development of a model that provides vetter prediction of FES-induced muscle force and body movement. Specifically, hou the muscle length was investigated. The experimental results showed that both the force increment ratio and the time-to-peak during electrical stimulation decreased with stimulatino frequency. When the muscle potentiation state was saturated by preceding stimulation. the force did not increase any more during additive stimulation. Muscle length significantly affected the force potentiation in such a way that the force increment ratio decreased with muscle length. A new model of the muscle potentiation based on these results is desired in the future.

• 대한치과보철학회:학술대회논문집
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• 2001.11a
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• pp.48-48
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• 2001

• Clinical and Experimental Pediatrics
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• v.50 no.6
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• pp.580-584
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• 2007

Multiple sclerosis (MS) is a demyelinating disorder that affects discrete areas of the CNS, including the optic nerves, in a quite variable relapsing-remitting fashion over a prolonged period of time. Although MS is usually considered to be a disease that affects peoples in early to middle adulthood, children do develop multiple sclerosis. The frequency of MS onset before the age of 15 years is 2.7-5% of all cases, while MS onset during infancy and early childhood was observed to be 0.2-0.7% of all cases. We report here on a Korean case of a relapsing-remitting MS female child who was treated with four rounds of intravenous methylpredinsolone pulse therapy and preventive Interferon-$\beta$-1b ($Betaferon^{(R)}$).

• Journal of Dental Rehabilitation and Applied Science
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• v.17 no.4
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• pp.231-244
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• 2001

This study was conducted to observe the effect on appendage muscle strength according to increase in occlusal vertical dimension. For this study, ten males with a mean age of 21 were selected. The subjects had a complete or almost complete set of natural teeth and reported no subjected symptoms of pain or dysfunction in the masticatory system. The tested occlusal splints were made at the position of increased occlusal vertical dimension of 2mm, 3.5mm, and 5mm from the ICP. Before and after wearing occlusal splints, the appendage muscle strength were tested by CybexII Dynamometer in each subject. The results were as follows : 1. When occlusal vertical dimension was increased, most of mean muscular strength values were increased except for those of supination and pronation of forearm at the position of 5mm increased occlusal vertical dimension. 2. The statistical analyses demonstrated that the increased occlusal vertical dimension position to be significantly stronger than intercuspal position for the muscle strength of the flexion and extension of hip, supination of forearm, external and internal rotation of knee, dorsiflexion and plantarflexion of ankle (p<0.05). 3. At the position of 3.5mm increased vertical dimension displayed the highest mean muscluar strength value than other positions. 4. Statistically demonstrated values, except for supination of forearm, internal rotation of shoulder, were related to lower appendage. Therefore splint was more effective on lower appendage than upper appendage to make muscle strength increased. 5. The mean increased rate of muscular strength tested on knee(57%), ankle(42%), and wrist(20%) were higher than hip(31%), elbow(14%), and shoulder(17%).

• The Journal of Korean Physical Therapy
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• v.17 no.4
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• pp.601-612
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• 2005

본 연구는 복직근의 기능적 전기자극이 경직형 뇌성마비 아동의 1회 호흡용적과 폐활량 등의 호흡능력과 복직근의 근육활동에 미치는 영향을 알아보기 위해서 대구 시내 OO특수학교에 재학 중인 14세 이상 16세 미만의 경직형 사지 뇌성마비 아동 6명(남자 3, 여자 3)을 대상으로 하여 복직근에 1회 20분. 주 3회씩 총 6주간 기능적 전기자극을 적용하였다. 기능적 전기자극의 적용 6주 전과, 직전에 두 번의 사전 검사와 적용 후 사후 검사를 실시하였다. MP30(Biopack, USA)을 이용하여 폐활량과 예측치 폐활량 백분율, 1회 호흡용적을 검사하였으며 Table면전극 근전도(Noraxon, USA)를 이용하여 복직근의 근육 활동량을 측정하였다. 분석결과는 다음과 같다. 1. 복직근의 기능적 전기자극 적용 6주 전과 직전의 폐활량은 유의한 차이가 없었으나, 적용 후의 폐활량은 적용 전에 비해 유의한 증가를 나타내었다(p<0.05). 2. 복직근의 기능적 전기자극 적용 6주 전과 직전의 예측치 폐활량 백분율은 유의한 차이가 없었으나, 적용 후의 예측치 폐활량 백분율은 적용 전에 비해 유의한 증가를 나타내었다(p<0.05). 3. 복직근의 기능적 전기자극 적용 6주 전과 직전의 1회 호흡용적은 유의한 차이가 없었으나, 적용 후의 1회 호흡용적은 적용 전에 비해 유의한 증가를 나타내었다(p<0.05). 4. 복직근의 기능적 전기자극 적용 6주 전과 직전의 복직근의 활동 값은 유의한 차이가 없었으나 적용 후의 복직근의 활동 값은 적용 전에 비해 유의한 증가를 나타내었다(p<0.05). 이상의 결과를 종합해 볼 때 6주간의 복직근의 기능적 전기자극이 경직형 뇌성마비 아동에 있어서 복직근의 근력을 강화시킴으로써 폐활량과 1회 호흡 용적 등의 호흡능력을 향상시킴을 확인할 수 있었다.

• Clinical and Experimental Pediatrics
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• v.51 no.12
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• pp.1350-1354
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• 2008

Spinal muscular atrophy (SMA) is an autosomal recessive disease characterized by diffuse proximal and distal weakness due to deletion of the survival motor neuron (SMN) gene localized on chromosome 5 (5q11.2-13.3). SMA has been considered as a pure lower motor neuron disorder, and a definitive diagnosis can be established by molecular genetic testing. Here, we describe two patients with severe hypotonia and frequent aspirations at early infancy. Nerve conduction studies showed more extensive sensory involvement in these patients diagnosed to have SMA by genetic study than in classical cases of SMA. To the best of our knowledge, this is the first report of SMA Type 1 with sensory nerve involvement in Korea.

• Journal of Oral Medicine and Pain
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• v.35 no.2
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• pp.155-163
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• 2010

Dermatomyositis (DM) is an idiopathic inflammatory connective tissue disorder and a systemic autonomic immune disease which shows a progressive muscle weakness and characteristic rash. It is identified by a characteristic rash accompanying, or more often preceding muscle weakness. Pathognomonic skin lesions are a blue-purple discoloration on the upper eyelids with edema (heliotropic rash), a flat red rash on the face and upper trunk, and erythema of the knuckles with a raised violaceous scaly eruption (Gottron's papule). The myopathy represents inflammatory and degenerative changes primarily affecting proximal muscles. DM often involves GI tract and respiratory system with as risk of 15-25% internal malignancy. It's managed with sun protection since muscle weakness as well as a rash could be aggravated by sun exposure. Systemic corticosteroid is an initial therapy and other immunosuppressive agent has been used as alternatives. Facial muscles are unaffected and masticatory muscles are rarely affected in DM. We present trismus close to muscle contracture in a patient with DM. Therefore, it needs continuous mouth-opening exercise to prevent progressive muscle contracture and to ensure normal mouth opening.