• 한국운동역학회지
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• 제16권2호
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• pp.85-95
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• 2006

The purpose of this study of which 10 University students in their twenties are the objects was to examine the causal differences of kinematic and electromyography during power walking and normal gait. We came to the following conclusions. 1) It took less time to stance phase, swing phase and whole gait time during power walking compared with normal gait. 2) During power walking, the step length and step length and lower limb length are longer than that of normal gait. 3) During power walking, ankle joint angle became more plantar flexed at LIC and RTO, knee joint angle become more flexed, so did hip joint angle at LIC and RTO. Besides during power walking the shoulder joint angle movement was bigger and elbow joint angle was more flexed as the trait of power walking. 4) During power walking, through out the phase the muscle activity of all muscle was higher expecially the muscle activity of Biceps brachii, gastrocnemius medialis, gastrocnemius lateralis, Soleus was higher. Therefore during power walking, one's scope of activity and muscle activity is relatively higher than those of normal gait, so power walking helps one strengthen muscular power and energy metabolism. This will be useful information for those who are interested in diet and well-being.

• Clinics in Shoulder and Elbow
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• 제9권1호
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• pp.89-95
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• 2006

Purpose: Arthroscopic repair of rotator cuff tears are many techniques that have been developed to improve the initial postoperative strength of the repair. There was a doubt that current arthroscopic cuff repairs using a single row of suture anchors reproduce insufficient area of the anatomic cuff insertion, and concerns about failure of fixation often lead surgeons to limit early motion. Newer technique of double-row repair in arthroscopic treatment may provide initial stronger fixation and more contact with bone at the repair site than single-row repair did. We studied the comparison between clinical outcomes of arthroscopic single- and double-row repair in cuff tears at 1year postoperatively. Materials and methods: We retrospectively analyzed 40 shoulders with single-row repair and 38 shoulders with double-row repair of full-thickness rotator cuff tears between May 2002 and October 2004. Out of total 78 shoulders, 42 (54%) were male patients and 36 (46%) were female patients and the mean age at surgery was 56 years. All patients were diagnosed by physical examination and MRI. At 1year' follow-up after operation, we evaluated with the ASES and the Constant scoring system, and measured muscle power of abduction, internal and external rotation of the affected shoulder then compared with each other. Results: Mean ASES scores and Constant scores in double-row repair group improved more than single-row repair group significantly at 1year postoperatively. Muscle power of abduction and internal rotation, especially abduction power, improved more significantly in double-row repair group than in single-row repair. Conclusion: Arthroscopic double-row repair for the full thickness rotator cuff tear may be a superior technique, which showed better clinical outcomes and restoration of muscle power compared with single-row repair at relatively short period of postoperative follow-up. Restoration of footprint close to normal anatomy by double-row repair seems to play an important role in the recovery of muscle strength.

• 한국산학기술학회논문지
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• 제14권1호
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• pp.229-238
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• 2013

본 연구는 대학 엘리트 카나디언 선수들의 등속성 근기능을 검사 및 진단하여 선수들의 기능 향상 및 상해예방을 위한 훈련 방법론에 대한 조언을 하고자 함에 목적이 있다. 경주 소재 D 대학의 평균 8.5년의 경력을 가진 8명의 엘리트 선수들이 실험에 참가했으며, Biodex system III, Biodex stabilizer system, THP 2, Inbody 720이 근기능 검사(peak torque, average power, work fatigue), 동적 균형 검사, 신체성분 검사를 위해 사용되었다. 등속성 근기능 검사는 어깨와 허리, 무릎 관절에 대하여 실시하였으며, 측정 후 동측 불균형과 좌 우측 불균형 정도를 평가하였다. 검사 결과 A3, A4, A5, A6, A8 선수는 어깨의 근력과 파워 훈련이, A1, A2, A7, A8 선수는 어깨의 근지구력 훈련이 필요한 것으로 평가되었다. A2, A5, A8 선수는 허리의 근력과 파워 강화 훈련이 필요하였고, A1, A8 선수는 허리의 근지구력 강화 훈련이 필요하였다. 대부분의 선수들은 무릎과 허리의 동측 근력비가 정상적이지 못했는데, 이의 개선을 위해 A2, A3, A4, A8 선수는 복근의 강화가 필요했고 A3, A5, A6, A7, A8 선수는 햄스트링의 강화가 요구되었다. 선수들의 BMI 평균은 24.90 $kg/m^2$, 체지방율은 12.23%, 반응시간 평균은 324 msec, 밸런스 점수는 각각 2.0 미만으로 나타났다. 이러한 결과를 종합해 볼 때, 카나디언 엘리트 선수들은 근력 불균형에 의한 경기력 저하와 상해 잠재 위험성이 있으므로 정기적인 근기능 검사를 통한 관리와 함께 적절한 훈련 처방이 필요할 것이라 생각된다.

• 한국의류학회지
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• 제21권5호
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• pp.933-945
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• 1997

The purpose of the study was to investigate types of uniforms which were considered as appropriate, functional, and/or power look. Also, the possibility of acceptance of a pantsuit for uniforms was examined. For the study, a questionnaire was developed by the researcher. The subjects were asked to select appropriate, function Al, or power look among combinations of: 1) two types of jackets with different shoulder width (natural, wide) and two types bottoms(pants, skirt) : 2) blouses with three different collars (ribbon, convertible, tailored) and two types of bottoms (pants, skirt) . The majority (89%) of subjects were 185 male and 182 female white-collar workers. For the ststistical analysis, Chi-square, one-way ANOVA, and t-test were used. The results of the study were: 1) For a uniform, a skirted suit was considered as being appropriate and powerful, and pants were regarded as being functional. 2) A jacket with natural shoulders was viewed as an appropriate and functional uniform, and a jacket with wide shoulders as power look. 3) A blouse with a convertible collar was regarded as an appropriate and functioal uniform, and a tailored collared-blouse evaluated as power look.

• 대한한의학회지
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• 제23권2호
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• pp.180-189
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• 2002

Background and Purpose : The hemiplegic upper extremity is affected in many stroke patients, and recovery is often poor. The purpose of this study was to assess the efficacy of electroacupuncture (EA) in enhancing the upper extremity motor and functional recovery of ischemic stroke patients. Subjects and Methods : Forty ischemic stroke patients (the upper extremity Fugl-Meyer motor scale (FM) score lower than 46, lesion location within middle cerebral artery territory) within 2 weeks of stroke onset were randomly allocated to either an EA group that received EA treatment or a control group that received only routine ward care. The EA was applied at Quchi-Shousanli (LI11-LI10), Waiguan-Hegu (TE5-LI4) points on the hemiparetic side six times per week for 4 weeks. The frequency of stimulation was 25-50Hz and the intensity was set at a level sufficient to induce muscle contraction. EA treatment was given for 30 minutes and all patients of both groups received standard rehabilitation program. Outcomes were assessed, in a blind manner, before treatment began and at 4 weeks after treatment, with the FM, the Motor Power score (MP) for shoulder/elbow, and the subsection of the Modified Barthel Index (MBI) for drinking/feeding/dressing upper body/grooming. Results : These 2 groups had comparable clinical characteristics, lesion location, lesion size, and pretreatment impairment scores. By the end of treatment, the EA group showed significantly more improvement than the control group in the subsection of the FM for shoulder/elbow/coordination (6.4 vs. 3.7; P=0.047) and the MP for shoulder/elbow (5.3 vs. 3.3; P=0.008). The subsection scores of the MBI for drinking/feeding/dressing upper body/grooming were not significantly different between two groups. No adverse effects due to treatment were found Conclusion : These results suggest that EA enhances the upper extremity motor recovery of acute stroke patients. However, this study failed to demonstrate any significant functional benefit related with upper extremity. Future study should be carried out in a larger sample size and use the functional outcome measure that is more specific and sensitive to the upper extremity.

• 대한정형외과 초음파학회지
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• 제4권1호
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• pp.33-37
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• 2011

어깨의 통증을 유발하는 흔하지 않은 원인 중 하나인 상부 관절와순 전후방 병변과 동반된 극관절와 낭종에 대한 보고는 많지 않다. 저자들은 이학적 검진과 초기 초음파 검사로 극관절와 낭종을 발견하지 못한 증례를 경험하였으며, 추가로 이학적 검진과 자기공명영상 및 상지 근전도 검사로 확인하여 수술적 치료를 시행하였다. 어깨의 통증과 근력 약화를 보이는 환자에서 초음파 검사로 명확한 원인이 발견되지 않을 경우 자세한 이학적 검진과 자기공명영상, 근전도 검사 등 추가 검사가 필요할 것으로 사료된다. 극관절와 낭종에서 초음파 검사는 제한점을 가질 수 있으며, 특히 극관절와 낭종의 (1) 크기가 작고, (2) 위치상 깊이가 깊으며, 견갑극을 따라 상부 관절와순 전후방 병변에서 발생한 경우 초음파 검사에서 관찰되지 않을 수 있다는 것을 임상의들은 염두에 두어야 할 것으로 사료된다.

• 한국운동역학회지
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• 제17권4호
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• pp.169-179
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• 2007

The purpose of this study was to investigate the relations between the segments of the body and to qualitatively analyze coordination pattern of joints and segments during Sweep Shot movement in Ice Hockey, by utilizing coordination variables was angle vs. angle plots. By the utilization the three dimensional anatomical angle cinematography, the angles of individual joint and segment according to sweep shot in ice hockey. The subjects of this study were five professional ice hockey players. The reflective makers were attached on anatomical boundary line of body. For the movement analysis three dimensional cinematographical method(APAS) was used and for the calculation of the kinematic variables a self developed program was used with the LabVIEW 6.1 graphical programming(Johnson, 1999) program. By using Eular's equations the three dimensional anatomical Cardan angles of the joint and ice hockey stick were defined. The three dimensional anatomical angular displacement and coordination pattern of trunk and Upper limb(shoulder-elbow, elbow-wrist linked system) showed important role of sweep shot in ice hockey. As the result of this paper, for the successful movement of sweep shot in ice hockey, it is most important role of coordination pattern of trunk-shoulder, shoulder-elbow and elbow-wrist. specially turnk movememt as a proximal segment. Coordination pattern of Upper Limb(upperarm-forearm-hand) of Sweep Shot movement in Ice Hockey that utilizes coordination variables seems to be one of useful research direction to understand basic control mechanisms of Ice hockey sweep shooting linked system skill. this study result showed flexion-extension, adduction-abduction and internal-external rotation of trunk are important role of power and shooting direction coordination pattern of upper Limb of Sweep Shot movement in Ice Hockey.

• The Journal of Korean Physical Therapy
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• 제12권2호
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• pp.95-105
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• 2000

Glenohumeral internal and external rotation with shoulder abducted in the frontal plane often causes impingement of the supraspinatus tendon. whereas similar activity in scapular plane does not cause impingement. The Purpose of this study was to determine if assessment among the three positions as 30 degrees, 60 degrees, 90 degrees abduction in the sitting position of the scapular plane could be affected the comparison between intemal and external peak torque, total work, average power. In this study, Isokinetic shoulder rotational strength was evaluated in twenty healthy male university students, using the Cybex NORMTM System (CYBEX Division of LUMEX, Inc., Ronkonkoma, New York). Test data was gathered in the plane of the scapular, 30 degrees of horizontal flexion anterior to coronal plane, and the subjects performed the test with the arm 30, 60, and 90degrees abducted in the sitting position. also, test speed was set at deg/sec. Statistical analysis was performed using SPSS 7.5 for Windows software and mean and standard deviations were calculated. ANOVA was used to analyze the difference of the values in the three test positions. A paired t-test was used of examining the difference in the means peak torque between external and internal rotation. Not any significant difference was found among three abduction positions in scapular plane, even though there was a consistent pattern of greater strength in the abducted position of 60 degrees. Internal relation strength peak torque and total work were greater than those of external rotation in every test positions.

• 한국산학기술학회논문지
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• 제16권2호
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• pp.970-977
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• 2015

본 연구의 목적은 보아의 넘버원 댄스 핵심동작의 생체역학적 3차원분석이며 보아의 전문 안무가가 실험에 참가하였다. 핵심동작의 관절 동작범위는 견관절과 주관절의 전후회전, 분절 동작범위는 몸통과 골반의 좌우회전이 가장 크며 몸통이 골반보다 더 크다. 무게중심이동 속도는 상하방향이 가장 빠르고 좌우, 전후방향 순이다. 최대각속도는 상지관절의 견관절과 주관절 및 하지관절의 고관절과 슬관절의 전후회전에서 가장 크게 나타났으나 족관절의 동작범위와 각속도는 거의 생성되지 않았다. 그리고 최대 회전파워는 상지 견관절과 하지 슬관절을 중심으로 원위분절로 갈수록 작게 나타나고 회전력은 고관절 외전모멘트가 가장 크고 슬관절은 신전모멘트가 크게 나타났다.

• Clinics in Shoulder and Elbow
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• 제16권1호
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• pp.53-57
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• 2013

목적: 임상 연구의 통계 분석에 있어서 표본수 산출의 의미와 기본 방식에 대해서 알고자 한다. 대상 및 방법: 자료의 분류, 연구 디자인 및 도출하고자 하는 결과의 성격에 따라 각기 다른 식을 적용시켜 표본수를 산출 한다. 결과: 표본수 산출은 임상 연구를 시작하기 전에 선행되어야 하며, 적절한 표본수 산출은 유의한 결론 도출에 필수 불가결하다. 결론: 표본수 산출은 에러나 작은 변수에 민감하기 때문에 특정 식에 적용시킬 때는 주의를 요한다.