• Journal of KIISE:Computing Practices and Letters
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• v.16 no.11
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• pp.1131-1135
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• 2010

This paper presents a method to capture the posture of the human lower-limbs on the 3D space by using a single camera and a planar mirror. The system estimates the pose of the camera facing the mirror by using four coplanar IR markers attached on the planar mirror. After that, the training space is set up based on the relationship between the mirror and the camera. When a patient steps on the weight board, the system obtains relative position between patients' feet. The markers are attached on the sides of both legs, so that some markers are invisible from the camera due to the self-occlusion. The reflections of the markers on the mirror can partially resolve the above problem with a single camera system. The 3D positions of the markers are estimated by using the geometric information of the camera on the training space. Finally the system estimates and visualizes the posture and motion of the both legs based on the 3D marker positions.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.41 no.8
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• pp.691-701
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• 2017

The barbell squat is a fundamental physical exercise for strengthening the lower body and core muscles. It is an integral part of training and conditioning programs in sports, rehabilitation, and fitness. In this paper, we proposed a virtual test framework for squat exercises using a Smith machine to simulate joint torques and muscle forces, based on an integrated product-human model and motion synthesis algorithms. We built a muscular skeletal human model with boundary conditions modeling the interactions between the human body and a machine or the ground. To validate the model, EMG, external forces, and squat motions were captured through physical experiments by varying the foot position. A regression-based motion synthesis algorithm was developed based on the captured squat motions to generate a new motion for a given foot position. The proposed approach is expected to reduce the need for physical experiments in the development of training programs.

• Korean Journal of Social Welfare Studies
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• v.44 no.1
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• pp.5-31
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• 2013

This study is phenomenological qualitative research about lived experience of recovering alcoholic homeless who had completed Therapeutic Community program. The meaning which is revealed through this study is as in the followed. First, Moving to recovering space. In Therapeutic Community, they have a turning point for new life and new connection with people who watch him carefully. Second, Physical recovery. They are no more lying down on the street. Analogy of Standing can be viewed as being most active in recovery. Third, Positioning on time flow. The recovering of time is represented by accepting past and present as well as looking ahead into the future. Fourth, Settling into network of a relation. They tried to reconnect with society by network of a relation. Their social place is located in a network, not a position. From this present study, the social work implications for the alcoholic homeless are deducted.

• Journal of the Korea Convergence Society
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• v.12 no.12
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• pp.427-434
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• 2021

This study was conducted to investigate the job-performance of manual wheelchair post-management and to find out the relationship between job-performance and vocational ability of people with developmental disabilities. In this study, situational evaluation and vocational evaluation were conducted for 9 subjects participated in the vocational training program about manual wheelchair post-management. The data was analyzed by non-parametric statistical processing. As a result, the job-performance was an average of 80.87%. The job-performance had a positive correlations with visual closure, kinesthetic integration, and basic concepts(p<.05). The relationship between job-performance and vocational abilities can be used as basic data for vocational training program and job assignment. It is expected to be useful of spreading the post-management job for assistive technology devices in the local community activated through the convergence of assistive technology and vocational rehabilitation.

• Journal of the Korean Society of Physical Medicine
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• v.14 no.3
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• pp.91-107
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• 2019

PURPOSE: This study examined the effects of breathing exercise in the water on the pulmonary function and maximum phonation time in children with cerebral palsy. METHODS: The subjects were 24 children with cerebral palsy at GMFCS levels I-III, who were allocated randomly to either the aquatic breathing exercise group or general breathing exercise group 12 subjects per group. Each subject was required to complete 40 minutes of exercise twice a week for eight weeks. Those in the aquatic breathing exercise group performed aquatic breathing exercise, whereas those in the general breathing exercise group performed general aquatic exercise. RESULTS: Significant differences in $FEV_1$, PEF, VC, TV, ERV, and maximum phonation time were observed in the aquatic breathing exercise group after intervention, but there were no significant differences in either FVC, $FEV_1/FVC$, IC, or IRV. In the general breathing exercise group, there were no significant differences in the FVC, $FEV_1$, $FEV_1/FVC$, PEF, VC, IC, TV, IRV, ERV, and maximum phonation time after intervention. In terms of the pulmonary function, the two groups showed a significant difference in the change in $FEV_1$, PEF, and TV after intervention, but not in the FVC, $FEV_1/FVC$, VC, IC, ERV, IRV, and maximum phonation time. CONCLUSION: These results above show that aquatic breathing exercise training in water is more effective in improving the pulmonary function than general breathing exercise training.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.27 no.1
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• pp.41-49
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• 2021

Background: The purpose of this survey was to know the current states and future suggestions of orthopedic manual physical therapy (OMPT) system on Korea. Methods: Questionnaires were directly distributed to physical therapists who participated in the training and collected at the educational or clinical site. The questionnaire was sent and collected by E-mail. Data were classified into two groups, metropolitan and city, and clinical experience was grouped into four groups. Then, 337 subjects (male: 195, female: 142) were recruited from us. Results: The states of Korea, 72.1% of therapists have been executed orthopedic manual physical therapy, the fee of one treatment was 50,000 ~ 60,000 Korean won, the time of treatment was 21~30 minutes, the number of patients of one day was under 9. The suggestion of future orthopedic manual physical therapy of Korea, 83.4% of therapist were agreed with manual physical therapy system, the education center of certificate for manual therapist was manual therapy academic group, the career of clinical experiences was 3 years, the training hours was more 300 hours, academic degree was diploma. Conclusion: In the future orthopedic manual physical therapy proposal, the environment and education system differ from country to country, but Korean OMPT agreed to an accredited orthopedic manual physical therapy system and wanted systematic management.

• Journal of the Korean Society of Physical Medicine
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• v.18 no.2
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• pp.115-123
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• 2023

PURPOSE: This study examined the effects of combined conventional exercise therapy plus respiratory exercise program with combined conventional exercise therapy plus aqua exercise program in the pulmonary function of subacute stroke patients. METHODS: The respiratory exercise program group underwent inspiration and expiration training using the Threshold IMT and Threshold PEP three days per week for four weeks. The aquatic exercise program group had aquatic aerobics, halliwick, and bad ragaz ring training three days per week for four weeks. Before and after the experiment, Pony fx was used to examine the FVC, FEV1, FEV1/FVC, VC, and MVV. RESULTS: Significant improvement was found after the experiment in the FVC. FEV1, VC, MVV, excepting FEV1/FVC, of the pulmonary function in the aquatic exercise program group. After the experiment, significant improvement was found in FVC, FEV1, FEV1/FVC, VC, and MVV of pulmonary function in the respiratory rehabilitation therapy group. No significant difference in FVC, FEV1, FEV1/FVC, VC, and MVV of pulmonary function was observed in the inter-group comparison. CONCLUSION: Significant improvement was found after the experiment in both the aquatic exercise program group and the respiratory exercise program group. No difference in pulmonary function was noted in the inter-group comparison. Therefore, combining general exercise therapy and an aquatic or respiratory exercise program is expected to be effective for the pulmonary function of acute stroke patients. These results are expected to provide basic data to help research intervention of aquatic and respiratory exercise programs for subacute stroke patients.

• Physical Therapy Korea
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• v.30 no.3
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• pp.237-244
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• 2023

Background: The external rotation (ER) exercise in performed at a 90° abduction of the shoulder joint is an effective to strengthen the infraspinatus. However, failure of the humeral head to control axial rotation during exercise can be increased the posterior deltoid over activity. Biofeedback training is an effective method of promoting motor learning and control it could look forward to activate the infraspinatus selectively by controlling the humeral head during exercise. Objects: The aim of this study was investigated that whether biofeedback for axial rotation was effective to activate selectively the infraspinatus during ER exercise. Methods: The 15 healthy males participated, and all subjects performed both ER exercise in a sitting position with shoulder abducted 90° under conditions with and without axial rotation biofeedback. Exercise was performed in a range of 90° ER, divided into three phases: concentric, isometric, and eccentric. The infraspinatus and posterior deltoid muscle activity were observed using surface electromyography. Results: Both infraspinatus activity (p < 0.01) and infraspinatus to posterior deltoid activity ratio (p = 0.01) were significantly higher with biofeedback however, posterior deltoid activity was significantly lower with biofeedback (p = 0.01). The infraspinatus muscle activity and muscle activity ratio were the highest in the isometric contraction type, and there were significant differences for all contraction types (p < 0.05). Whereas, the posterior deltoid activity was the lowest in the isometric contraction type, and showed a significant difference between isometric and other two contraction types (p < 0.05), but no significant different between concentric and eccentric contraction. Conclusion: Our results indicate that the axial rotation biofeedback during sitting ER exercise might be effective method to activating selective infraspinatus muscle and recommended to enhance the dynamic stability of the shoulder joint.

• Steel and Composite Structures
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• v.51 no.5
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• pp.509-527
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• 2024

Bonding carbon fiber-reinforced polymer (CFRP) laminates have been extensively employed in the restoration of steel constructions. In addition to the mechanical properties of the CFRP, the bond strength (P_U) between the CFRP and steel is often important in the eventual strengthened performance. Nonetheless, the bond behavior of the CFRP-steel (CS) interface is exceedingly complicated, with multiple failure causes, giving the P_U challenging to forecast, and the CFRP-enhanced steel structure is unsteady. In just this case, appropriate methods were established by hybridized Random Forests (RF) and support vector regression (SVR) approaches on assembled CS single-shear experiment data to foresee the P_U of CS, in which a recently established optimization algorithm named Aquila optimizer (AO) was used to tune the RF and SVR hyperparameters. In summary, the practical novelty of the article lies in its development of a reliable and efficient method for predicting bond strength at the CS interface, which has significant implications for structural rehabilitation, design optimization, risk mitigation, cost savings, and decision support in engineering practice. Moreover, the Fourier Amplitude Sensitivity Test was performed to depict each parameter's impact on the target. The order of parameter importance was t_c> L_c > E_A > t_A > E_c > b_c > f_c > f_A from largest to smallest by 0.9345 > 0.8562 > 0.79354 > 0.7289 > 0.6531 > 0.5718 > 0.4307 > 0.3657. In three training, testing, and all data phases, the superiority of AO - RF with respect to AO - SVR and MARS was obvious. In the training stage, the values of R² and VAF were slightly similar with a tiny superiority of AO - RF compared to AO - SVR with R² equal to 0.9977 and VAF equal to 99.772, but large differences with results of MARS.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.373-379
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• 2024

Mao Ze Dong's argument, which was examined through "Ti-Yuzhi Yan-Jiu," was not bound by Chinese traditions in the past, and it is a very bold and novel writing that points out exactly why physical education is necessary and why intellectuals of the time do not exercise. In addition, so that the first half's description does not stay only in empty theories, the second half introduces "Six-stage Gymnastics," which he created himself, and suggests specific action methods. Mao Ze Dong's idea of sports in "Ti-Yuzhi Yan-Jiu" is not just about promoting health, but is in line with the 5.4 New Culture Movement and is linked to the idea of saving the country for the nation and its people based on a strong body. I believe that 'Tiyuzh Yanjiu" initially stemmed from a simple sports enthusiast's ideology emphasizing Mao Zedong's physical training methods and their necessity. However, over time, the expression and practice of this argument became the foundation for the socialist political ideology of Mao Zedong, who united the people of China under socialism, founded the People's Republic of China, and led the entire country for nearly thirty years with his practical approach to physical training.