• Journal of the Korean Society of Physical Medicine
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• v.10 no.1
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• pp.23-35
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• 2015

PURPOSE: People with physical disabilities such as cerebral palsy usually experience obstacles when interacting with computer through conventional keyboard because of their motor disabilities. The purpose of this study is empirically compare of text entry(alphabet and word) speed and accuracy using the three different keyboard type on four students(male 2 and female 2) with cerebral palsy. METHODS: This research design used a replicated single-case experimental approach to compare the individual performance. An alternating treatments design was used to examine the effectiveness of standard QWERTY keyboard and alternative keyboard(mini and big keyboard) on computer access for students with cerebral palsy. To avoid changes in posture that influence a keyboard character entry training and evaluation was carried out using his sitting in a wheelchair. Compass software program used in this study as an assessment tool to measure speed and accuracy when performance of text entry(alphabet and word). This was repeated until the stable status of reaction time. RESULTS: As a result, the alternative keyboard seems to be the most effective device for students with cerebral palsy to perform text entry. But various factors such as peculiarity of motor disabilities, experience and preferences of the user are heavily related. CONCLUSION: Thus, we must perform the objective and systematic assessment for computer access and if sustained training is accomplished, it could to improve speed and accuracy of text entry(alphabet and word).

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.28 no.3
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• pp.69-77
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• 2022

Background: Ankle sprains, and the resulting ankle instability worsen to chronic due to recurrent ankle injuries or sprains, 78% of which are accompanied by posture instability and damage due to changes in the position of the talus of the ankle. The purpose of this study is to investigate the immediate effect of applying MWM taping on the patient's muscle strength and balance ability in patients with chronic ankle instability. Methods: 15 people with MWM taping and 15 people with Kinesio taping were applied, and after applying the taping of the ankle, 10 minutes of walking treadmill and 10 times of forward lunge operation, the change in ankle muscle strength and balance ability was confirmed. The strength test of the ankle was performed using a test device called Biodex system 4 (USA) for the movement of the dorsi-flexion and plantar flexion of the foot, and the balance of the two groups was measured using Biodex balance system (USA) to test balance ability. Results: The comparison of muscle strength changes in the ankle does not show a significant increase in the group applying MWM compared to the group applying kinesio taping (p<.05). In the comparison of equilibrium capabilities, the MWM taping group also showed a significant increase in the MWM taping group compared to the kinesio taping group (p<.05). Conclusion: When applying MWM taping and kinesio taping to patients with chronic ankle instability, there was no significant difference in comparison of muscle strength changes, but there was a significant difference in comparison of balance ability.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.11 no.3
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• pp.271-277
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• 2017

The purpose of this study was to develop a balance chair for improving pelvic correction and postural balance through postural balance training using tactile feedback by a vibration motor provided in real time according to the user's attitude. We built a body frame using mono cast(MC) Nylon, Touch thin film transistor(TFT) for user interface, a main control module using Arduino, a 9-axis acceleration sensor for user's posture determination, and a vibration module for tactile feedback. The prototype of the Balance Chair which surrounds the outside was made with cushion for sitting conformability. In order to verify the effectiveness of the postural balance training system using the built prototype, the muscle activity (% MVIC) of the left and right iliocostalis lumborum those are the main muscles of the spinal movement was measured with ten female subjects. And the balance ability before and after training was measured using Spine Balance 3D, a posture balance ability evaluation device. The muscular activities of the left and right iliocostalis lumborum showed the balance activation according to vibration feedback during exercise protocol and postural balance improved after balance exercise training using balance chair. This study could be apply to use the fundamental research for developing the various postural balance product.

• Journal of Digital Contents Society
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• v.19 no.2
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• pp.251-257
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• 2018

The purpose of this study is to analyze the satisfaction and requirements of users' devices after development of tablet based AAC(Augmentative and Alternatice Communication) application for Android. The purpose of this study is to evaluate the satisfaction and the requirement of tablet - based AAC application, Were assessed using the Korea Assistive Technology Assessment Tool (KAAT). As a result of satisfaction evaluation of tablet-based smart AAC device, all the items including device, service, and everyday life showed positive response satisfying from 5 point scale to more than 4 point scale. However, it was relatively low in the items of effectiveness, manipulation and convenience. Some of the improvements in the application include the enlargement of the symbol sound and the simplicity of symbol editing. The results of the study suggest that continual updates of m Smart AAC applications, the simplicity of symbolic editing, application usage and training should be improved. The satisfaction evaluation results of this study and the feedback of potential users will be the guidelines for improving and complementing the functions of existing smart AAC devices.

• The Korean Journal of Rehabilitation Nursing
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• v.4 no.1
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• pp.31-45
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• 2001

The purpose of this study was to investigate the relationship between self-concept and self-care activities of the cerebral palsied adolescents and to gain the baseline data for development of effective rehabilitation nursing intervention program of the cerebral palsied adolescents. The design of this study was a descriptive correlational study. The subjects of the study were 160 cerebral palsied adolescents attending at special schools located in Seoul and Kyonggi and rehabilitation centers located in Seoul, Kyonggi and Kyongnam province. The data was collected from May 20 to July 20, 2000. The instrument used for this study were the self-concept scale(50items 4point scale) and self-care activities scale(29items 4point scale). Self-Concept Scale had developed by Fitt(1965), which was standardized by Chung(1968) and modified by Kim(1984). Self-Care Activities Scale developed by the researcher through out the consulting of expert and pilot study on the basis of ADL check list developed by Kang(1984) and LDSQ-3(Lambeth Disability Screening Questionnair-3) developed by Na et al. (1995). The data was analyzed by the SPSS/PC+program using frequency, percentage, mean, standard deviation, t-test, ANOVA & Scheffe test and Pearson's correlation coefficient. The results of this study were as follows; 1. The mean score of self-concept was $138.55{\pm}17.20$(range: 50-100), which the item mean score was $2.77{\pm}0.34$(range: 1-4). The score of subarea of the self-concept was the highest score in family self ($3.01{\pm}0.54$) and the lowest score in physical self ($2.52{\pm}0.42$). 2. The mean score of self-care activities was $95.25{\pm}21.69$ (range: 29-116), which the item mean score was $3.28{\pm}0.75$ (range: 1-4). The score of subarea of the self-care activities was the highest score in feeding($3.75{\pm}0.59$) and the lowest score in walking($2.64{\pm}1.21$). 3. There were statistically significant difference in the score of self-concept according to the age (F=3.24, P=.04), the grads (F=4.36, P=.01), and types of cerebral palsy (F=2.42, P=.03). 4. There were statistically significant difference in the score of self-care activities according to the age (F=8.29, P=.00), the grads (F=16.05, P=.00), types of living place (F=6.46, P=.00), types of cerebral palsy (F=48.92, P=.00), whether or not receiving a rehabilitation therapy (t=-3.64, P=.00), whether or not receiving a vocational training (t=2.14, P=.03), and whether or not using a device (t=-7.42, P=.00). 5. There was not significant correlation between self-concept and self-care activities (r=.081, P=.311).

• Therapeutic Science for Rehabilitation
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• v.10 no.2
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• pp.95-108
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• 2021

Objective : This study aimed to develop prototypes of "smart stacking cones" by combining ICT to evaluate and train the upper extremity function and dual task performance in patients with central nervous system impairment, and to identify the complementary point to the completion of the device through a usability test. Methods : This prototype comprised of a hardware and software system that enabled the evaluation and training of patients and the management of data obtained from patients' performance. Specific measurement variables were established so that patient performance could be measured correctly. Based on the measurement variables, a the prototype included a 'single task evaluation modes', 'dual task evaluation mode', 'single task training mode', and 'dual task training modes'. Additionally, a usability test was conducted to assess clinical applicability and overall satisfaction for the prototype. Results : The results of the usability test were generally found to be appropriate. The 'content adequacy' in the usability test was the area with the highest level of adequacy and the lowest level of inadequacy. Additionally, overall 'satisfaction' in the usability test was the area with the highest appropriate and inappropriate levels. Hence, the overall satisfaction results were unstable. Conclusion : Future studies should be conducted to identify the clinical effectiveness of the device by applying an upgraded smart stacking cone to an actual patient group.

• Journal of Sensor Science and Technology
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• v.20 no.3
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• pp.172-177
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• 2011

Finger patients can't use their hands because of the paralysis their fingers. Their fingers are recovered by rehabilitating training, and the rehabilitating extent can be judged by measuring the pressing force to be contacted with two fingers(thumb and first finger, thumb and middle finger, thumb and ring finger, thumb and little finger). At present, most hospitals have used a thin plastic-plate for measuring the two-finger grasping force, and we can only judge that they can grasp the plate with their two-finger through it, because the plate can't measure the two-finger grasping force. But, recently, the force measuring system for measuring two-finger grasping force was developed using three-axis force sensor, but it is very expensive, because it has a three-axis force sensor. In this paper, two-finger force measuring system with a one-axis force sensor which can measure two-finger grasping force was developed. The one-axis force sensor was designed and fabricated, and the force measuring device was designed and manufactured using DSP(Digital Signal Processing). Also, the grasping force test of men was performed using the developed two-finger force measuring system, it was confirmed that the grasping forces of men were different according to grasping methods, and the system can be used for measuring two-finger grasping force.

• The Journal of Korean Medicine
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• v.36 no.3
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• pp.84-97
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• 2015

Objectives: The purpose of this study was to investigate and analyze the demands for educational programs on clinical trials of Korean medicine devices, and develop training programs based on the needs of Korean medicine. Methods: This research was conducted targeting 26 volunteer applicants who had participated in clinical trials of Korean medicine devices within the last five years (2010-2015). The survey was carried out between May 1, 2015 and May 26, 2015 via e-mail. After receiving questionnaire replies, the material was established. Using obtained data, frequency analyses were performed using SPSS 20.0 version. Results: 92% of the researchers who participated in the survey expected introduction of educational programs on clinical trials and anticipated that programs contain information that can meet the needs of each researcher. In addition, according to the analysis, introducing expert certification for clinical trials of Korean medicine devices is necessary, and offering related graduate courses are also needed. Conclusions: As a result of this study, researchers had difficulties during clinical trials of Korean medicine devices. If the educational programs were to be developed and institutional frameworks support them effectively, it would prove to be helpful to researchers in clinical trials.

• Journal of Institute of Control, Robotics and Systems
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• v.16 no.9
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• pp.876-882
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• 2010

Stroke patients can't use their hands because of the paralysis their fingers. Their fingers are recovered by rehabilitating training, and the rehabilitating extent can be judged by measuring the pressing force to be contacted with two fingers (thumb and first finger, thumb and middle finger, thumb and ring finger, thumb and little finger). But, at present, the grasping finger force of two-finger can't be accurately measured, because there is not a proper finger-force measuring system. Therefore, doctors can't correctly judge the rehabilitating extent. So, the finger-force measuring system which can measure the grasping force of two-finger must be developed. In this paper, the finger-force measuring system with a three-axis force sensor which can measure the pressing force was developed. The three-axis force sensor was designed and fabricated, and the force measuring device was designed and manufactured using DSP (Digital Signal Processing). Also, the grasping force test of men was performed using the developed finger-force measuring system, it was confirmed that the grasping forces of men were different according to grasping methods.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.915-919
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• 2007

가상현실은 컴퓨터를 이용하여 만들어진 가상의 환경에서 사용자가 오감을 통해 현실과 유사한 느낌을 경험할 수 있도록 해주는 기술이다. 햅틱 인터페이스는 사용자가 촉각으로 가상 환경과 상호 작용을 할 수 있도록 해주는 기술로서 사용자가 가상 물체를 실제로 만지는 듯한 착각을 불러 일으켜 보다 현실에 가까운 가상 경험을 할 수 있도록 도와준다. 본 논문에서는 다양한 용도로 사용할 수 있는 3차원 햅틱 인터페이스 장치를 설계 및 제작하고, 순발력 재활훈련의 목적으로 가상공간을 시각적으로 보여주는 입체영상 시스템과 연동하여 일부 제한적인 기능을 갖는 가상 테니스 연습 시스템을 구현하였다. 이때 가상 공과 가상 라켓의 간단한 충돌 모델과 햅틱 렌더링을 통하여 가상 공을 칠 때 사용자가 라켓으로 느끼는 충격과 반력을 제작한 3차원 햅틱 인터페이스 장치를 통하여 느낄 수 있도록 하였다. 구현된 시스템의 실험을 통하여 공과 라켓에서 충돌이 일어났을 때의 느낌을 사용자에게 전달할 수 있었으며, 완벽하지는 않지만 공과 라켓의 충돌 후 공의 나가는 방향과 속도가 실제와 유사함을 확인하였다.