• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.73-74
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• 2020

사용자 동작 추정이란 이미지 또는 비디오에서 사용자의 관절 위치를 추정하는 과정을 말한다. 기존의 연구들은 사용자의 몸에서 관절의 큰 부분(어깨, 무릎, 골반, 손, 발 등)만을 추정하거나 손의 세부 관절을 별도로 추정 했다. 하지만 특정 분야(수화, 댄스 등)에선 몸짓과 손을 함께 사용하기에 우리는 사용자 몸의 큰 관절과 손의 세부 관절을 같이 추정하는 방법에 대한 연구를 제안한다. 본 논문에서 제안하는 사용자 동작 추정 방법은 Cascades 방법을 이용한 합성곱 신경망 기반 회귀모델을 적용한 방식이다. 손의 관절들은 다른 큰 관절들(어깨, 무릎, 골반 등)보다 작아서 정밀한 추정을 요구하기에 Cascades 방법을 사용해 보다 정밀하게 추정할 수 있다.

• Physical Therapy Korea
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• v.10 no.4
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• pp.33-42
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• 2003

이 연구의 목적은 뇌성마비 아동에게 앉은 자세에서 현수를 이용하여 체중지지를 해주었을 때 상지기능에 어떠한 영향을 미치는지 알아보는 것이다. 연구대상자는 뇌성마비 아동 5명과 뇌종양 아동 1명이었다. 연구대상자에게 harness를 착용하여 부분적 체중지지를 하기 전과 착용한 상태에서 손 뻗기 동작을 3차원 동작분석기를 이용하여 어깨관절과 손뻗기 동작에 걸린 시간을 측정하였고, Box and Block 검사를 실시하여 체중지지 전과 착용 시 상지 기능을 비교하였다. 자료분석은 윌콕슨 부호순위검정을 사용하였다. 어깨관절의 관절 가동범위와 Box and Block 검사에서는 유의한 차이가 없었으나, 팔뻗기 동작의 수행 시간에는 유의한 차이가 있었다(p<.05). 연구 대상자의 수가 적고, 대상자 마다 연령 및 손상의 정도가 서로 다르기 때문에 연구결과를 일반화하여 해석하기에는 제한점이 있지만, 앉은 자세에서 harness를 이용하여 부분적 체중지지를 적용하였을 때 상지의 기능 향상에 도움을 줄 수 있으리라 생각하며 향후 다수를 대상으로 한 연구가 필요하리라 생각한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.313-323
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• 2018

This study was conducted to develop an individualized upper extremity exercise program for patients after mastectomy and evaluate its effectiveness. A nonequivalent control-group pretest-posttest design was used for this investigation. Research participants were patients with breast cancer who underwent mastectomy at two university hospitals (experimental group, n=17; control group, n=16). The experimental group received an individualized upper extremity exercise program three times a week for 7 weeks. Data were analyzed by the ${\chi}^2-test$, Fisher's exact test, Mann-Whitney U-test and Wilcoxon Signed Rank test using SPSS WIN 21.0. Inter-group comparison revealed significant differences between pre-test and post-test in hands behind the back, flexion, abduction, external rotation, internal rotation, and grip strength. Moreover, the experimental group showed significant improvements in hands behind the back, flexion, abduction, external rotation, internal rotation, and grip strength relative to the control. In conclusion, the individualized upper extremity exercise program was shown to be an effective intervention to improve physical functions in upper limbs and shoulders. Therefore, this program should be applied to patients after mastectomy in clinics since many patients have suffered from decreased physical functions in upper extremities.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2002.03a
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• pp.140-141
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• 2002

수영이 어깨관절에 미칠 수 있는 과도한 부하를 생각할 때 수영과 관련된 어깨 문제를 해결하여 종전의 경기력을 회복한다는 것은 과학과 예술의 합성만큼 어려운 것일 것이다. 이를 위해서는 수영의 생역학, 어깨 손상의 조기진단 법, 진단의 객관적 수치 유추화, 손상 부위에 따라 개별화 된 운동치료 법 등 여러 가지의 발전이 필수적일 것이다. 본란에서는 이에 대한 전체적인 내용을 한가지씩 짚어가며 그 방법과 문제점에 대하여 토의하고자 한다.

• Radiation Oncology Journal
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• v.23 no.1
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• pp.32-42
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• 2005

Purpose : To evaluate the incidence of arm morbidity following breast cancer surgery including axillary dissection and to identify related factors. Materials and Methods : One hundred and fifty nine patients were studied using a self-report questionnaire and a clinical examination. Lymphedema, reduction of range of motion in shoulder joint and subjective symptoms (pain, impaired arm movement, numbness, stiffness) were evaluated. As related factors, demographic, oncologic characteristics and types of treatment were analysed. Results : The incidence of lymphedema ($\geqq$2 cm difference comparing to unaffected arm) was $6.3\%$, $10.7\%$, $22.5\%$ and $23.3\%$ at each 10 cm, 20 cm, 30 cm, and 40 cm from wrist. Reduction of range of motion in shoulder joint ($\geqq$ 20 degree difference comparing to unaffected arm) was noted In more than 1/3 patients for flexion, abduction and internal rotation. Especially the reduction of range of motion in internal rotation was severe ($>50\%$ reduction) in 1/3 patients. Approximately 50 to $60\%$ of patients complained impaired arm movement, numbness, stiffness and pain. Body mass index (BMI) was the significant risk factor for lymphedema. Conclusion : Lymphedema was present in 1/3 of patients and the common sites of edema were 30 cm 40 cm proximal from the wrist. Also most severe reduction of range of motion in shoulder joint was with internal rotation. There needs weight control for lymphedema because BMI was the significant risk factor for lymphedema. Also rehabilitation program for range of motion especially internal rotation In shoulder joint should be developed.

• Journal of TMJ Balancing Medicine
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• v.11 no.1
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• pp.37-40
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• 2021

Objectives: The purpose of this study is to report the effect of Korean medical treatment using Yin-yang Balancing Therapy of TMJ (YBT) on correcting posture. Methods: During the admission period, the patient was treated by Korean medical treatment (YBT, acupuncture, herb medicine, etc) every each day. The standard intraoral balancing appliance was used in patient while sleeping and exercising. Results: After treatment for 35th, the angle changed from 23 degrees to 0 degree. The posture of the neck and shoulder became straight. The distorted facial midline was aligned straight. Conclusions: These results showed that YBT have an effect on correcting posture.

• Progress in Medical Physics
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• v.2 no.2
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• pp.161-173
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• 1991

A statistical approach was carried out to analyze joint moments acting on the six subjects performing a right-handed seated task. The dynamic task analyzed consisted of moving a hand-held weight of lkg mass back and forth in front of a subject's chest at the shoulder level in an upright seated position. We used experimental data obtained in the Biomechanics Laboratory of the University of Michigan. Based on the acquired data from three trials by each subject, moments were calculated using a 3-dimensional biomechanical model at such articulations as wrist, elbow, shoulder, the third lumbar spine, hip, knee, and ankle joints. The linear correlation and the two way analysis of variance were applied to the calculated joint moments in order to investigate inter-subject and inter-trial varations. The results obtained showed that the largest magnitude and deviation of moment was found at the third lumbar spine, that any linear relationship could not be found between moment and its equivalents attempted in this study, and that the maximum value and deviation of moment acting on each joint were statistically the same for all three trials but those were statistically not the same for all six subjects.

• LP가스
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• v.20 no.1
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• pp.67-68
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• 2008

• Korean Journal of Applied Biomechanics
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• v.19 no.3
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• pp.549-555
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• 2009

The purpose of this study was to quantify the isokinetic peak torque and range of motion at the shoulder in 8 national male volleyball players who played during the 2008 professional leagues. In this study the strength and range of motion data in the internal rotation(IR) and external rotation(ER) of shoulder joint were measured with isokinetic measurement system(Biodex Inc) and motion analysis system (Simi motion system Inc.) from 3 volleyball players with atrophy of the infrasupinatus and 5 volleyball players without atrophy of the infraspinatus. Peak torques were determined using isokinetic measurement on the shoulder joint rotator at the point of angular velocities of $60^{\circ}$/s. Significant difference was found in the peak torque, IR / ER ratio and the range of motion through assessment of the dominant shoulder between two groups. we recommended functional exercises that improve both external rotators strength and stretching exercise for internal rotation in the dominant side during the prevention programs in volleyball players.

• Journal of Life Science
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• v.20 no.4
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• pp.549-554
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• 2010

Increased external rotation and decreased internal rotation have been noted to occur progressively in the throwing shoulders of baseball pitchers. The purpose of this study was to provide descriptive data for terminal range eccentric antagonist/concentric agonist shoulder muscle strength in collegiate baseball pitchers with humeral head retroversion diagnosed through MRI. The dominant and non-dominant shoulders of 9 asymptomatic baseball pitchers were tested through a range of 20 degrees of external rotation to 90 degrees of internal rotation using the Biodex system 3 isokinetic dynamometer at speeds of $90^{\circ}/s$ and $180^{\circ}/s$. Differences between the dominant and non-dominant shoulders were assessed using the paired samples t-test. Total range of motion, measured at $90^{\circ}$ of glenohumeral abduction, was $180.1^{\circ}$ for dominant shoulders and $183.7^{\circ}$ for non-dominant shoulders. Humeral head retroversion measured $47.6{\pm}6.1^{\circ}$ in dominant and $37.8{\pm}5.3^{\circ}$ in non-dominant extremities. The mean internal rotator concentric contraction (IR-Con) showed a significant difference compared to $31.5{\pm}5.1$ (Nm) in dominant and $38.7{\pm}5.2$ (Nm) in non-dominant shoulders at $180^{\circ}/s$ (p<0.05). The mean external rotator eccentric contraction (ER-Ecc) showed a significant difference compared to $20.3{\pm}4.7$ (Nm) in dominant and $25.1{\pm}3.7$ (Nm) in non-dominant shoulders at $90^{\circ}/s$ (p<0.05). There is a pattern of increased external rotation and decreased internal rotation in the dominant extremity that significantly correlates with an increase in humeral retroversion.