• 한국운동역학회지
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• 제19권1호
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• pp.59-66
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• 2009

본 연구의 목적은 국내 엘리트 골프선수들을 대상으로 3차원 스윙 평면 분석(swing plane analysis)을 통해 스윙 평면의 편평도를 확인하여 이들 스윙이 어떤 유형의 스윙인지를 확인하는 것이 목적이었다. 또한 편평도를 이용한 스윙평면 분석 이외에 또 다른 운동학적 변인을 이용한 스윙 평면 분류가 가능한지도 확인하였다. 그 결과 편평도와 핸디캡간의 상관성은 없는 것으로 판명되었고 단일 및 다중 평면 스윙 그룹간의 편평도 비교를 실시한 결과 유의한 차이를 확인할 수가 있었다. 두 스윙 그룹을 구분하는 대표적인 특징인 백스윙 및 팔로우드로우에서의 스윙 궤도차이를 확인하기 위해 실시한 두 스윙 그룹 간 event 별 편평도 비교에서 그 유의한 차이를 확인함으로서 본 연구에서 정의한 오차범위 10cm는 두 스윙 스타일을 구분하는데 유효한 것으로 확인이 되었다. 편평도를 이용한 스윙평면 분석 이외에 운동학적 변인인 두 스윙 그룹 간 샤프트 단위벡터 비교와 샤프트 원위점 변위 비교를 event 별로 실시한 결과 통계적으로 유의한 차이는 확인이 되지 않았다. 하지만 전체적인 변인들의 이동패턴을 살펴 볼 때 각각의 스윙 그룹의 특징을 잘 보여주고 있기 때문에 스윙 스타일을 판단하는 간접적인 지표가 될 가능성을 보여주었다.

• 대한골관절종양학회지
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• 제3권1호
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• pp.18-25
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• 1997

Prosthetic replacement is one of the most common methods of reconstruction after resection of malignant tumor around the knee. Gait analysis provides a relative objective data about the gait function of patients with prosthesis. The purpose of this study was to compare the gait pattern of the patients who underwent limb salvage surgery with prosthesis for distal femur and that of patients with prosthesis for proximal tibia. This study included ten patients (4 males, 6 females, mean age 22.7 years, range 14-36) who underwent a wide resection and Kotz hinged modular reconstruction prosthesis replacement and six normal adult(Control). The site of bone tumor was the distal femur (Group 1) in six patients and proximal tibia (Group 2) in 4 patients. The follow-up period ranged from 15 to 82 months (mean : 33 months). The evaluation consisted of clinical assessment, radiographic assessment, gait analysis using VICON 370 Motion Analysis System. The gait analysis included the linear parameters such as, walking velocity, cadence, step length, stride length, stance time, swing time, single support and double support time and the three-dimensional kinematics (joint rotation angle, velocity of joint rotation) of ankle, knee, hip and pelvis in sagittal, coronal and transverse plane. For the kinetic evaluation, the moment of force (unit: Nm/kg) and power (unit: Watt/kg) of ankle, knee and hip joint in sagittal, coronal and transverse plane. In the linear parameters, cadence, velocity, step time and single support were decreased in both group 1 and group 2 compared with control. Double support decreased in group 2 compared with control significantly(p<.05). In contrast to our hypothesis, there was no significant difference between group 1 and group 2. In Kinematics, we observed significant difference (p<.05) of decreased knee flexion in loading response (G2

• 대한물리치료과학회지
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• 제10권1호
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• pp.90-101
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• 2003

Gait analysis can provide a better understanding of how the alignment of the lower limb and foot can contribute to force observed at the knee. Anatomic and mechanical factors that affect loading in the knee pint can contribute to pathologic change seen at the knee in degenerative pint disease and should be considered in treatment plan. The purpose of this study is to present the gait analysis data and to determine whether there is any relationships between alignment of the lower limb, foot progression angle and knee pint moments in elderly healthy women with 3-dimensional motion analyzer. The results were as follows; 1. Cadence showed 114.8 steps/min, gait speed showed 1.05 m/s, time per a stride showed 1.06 sec, time per a step showed 0.53 sec, single-supporting phase was 0.41 sec, double-supporting phase was 0.24 sec, stride length was 1.04 m, Step length was 0.56 m. 2. According to the parameters of kinematics, the maximal knee flexion angle through swing phase showed left $46.82^{\circ}$, right $40.19^{\circ}$ and the maximal knee extension angle showed left $-1.32^{\circ}$, right $2.01^{\circ}$. knee varus showed left $26.90^{\circ}$, right $30.93^{\circ}$. 3. Moment, one of kinetic parameters of knee pint the maximal flexion moment showed left 0.363. Nm/kg, right 0.464 Nm/kg and maximal extension moment showed left 0.389 Nm/kg, right 0.463 Nm/kg. The maximal. adduction moment showed left 0.332 Nm/kg, right 0.379 Nm/kg and the maximal internal rotatory moment showed left 0.13 Nm/kg, right 0.140 Nm/kg. 4. On sagittal plane, the maximal power of knee joint showed left 0.571 J/kg, right 0.629 J/kg. On coronal plane, the maximal power of knee joint showed left 0.11 J/kg, right 0.12 J/kg. On transverse plane, the maximal power of knee joint showed left 0.058 J/kg, right 0.072 J/kg. 5. The subject who had varus alignment of the lower extremity had statistically higher in knee adduction moment in mid stance phase. 6. The subject who had large foot progression angle had statistically lower in knee adduction moment in late stance phase. A relationship was observed between the alignment of the lower extremity and the adduction moment of the knee joint during stance phase. Hence, we need some research to figure, out the change of adduction moment according to the sort of knee joint osteoarthritis and the normal geriatrics as well. And we also require more effective, specific therapeutic program by making use of those background of researches.