• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2021년도 제64차 하계학술대회논문집 29권2호
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• pp.691-694
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• 2021

The malalignment of the trunk causes abnormal stress in a specific area and lead to trunk instability. The purpose of this study was to investigate the correlation between the angle between the infrasternal angle and the trunk side shift distance. The participants in this study 22 subjects were participated. The infrasternal angle and trunk side shift distance were measured using a camera and analyzed using the Image J program. The correlation between the asymmetry of the infrasternal angle and trunk side shift distance was moderate (r=-0.413; p=0.028). According to the asymmetry of the infrasternal angle, it was confirmed that trunk lateral shift appeared in a specific direction. Based on result, it suggests that infrasternal angle and trunk side shift should be considered in the intervention plan of patients with asymmetry of the infrasternal angle.

• 한국운동역학회지
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• 제23권3호
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• pp.209-218
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• 2013

This study was to perform the kinetic analysis of forward $1\frac{1}{2}$ somersault on the platform diving. Six men's diving players of the Korea national reserve athletes participated in this study. The variables were analyzed response time, velocity, center of mass (COM), angle, center of pressure (COP) and ground reaction force (GRF) of motion. For measure and analysis of this study, used to synchronized to 4 camcorder and 1 force plate, used to the Kwon3D XP (Ver. 4.0, Visol, Korea) and Kwon GRF (Ver. 2.0, Visol, Korea) for analyzed of variables. The results were as follows; Time factor were observed in maximum knee flexion depending on the extent of use at phase 1 of take-off to execute the somersault. This enabled the subject to secure the highest possible body position in space at the moment of jumping to execute the somersault and prepare for the entry into the water with more ease. Regarding the displacement of COM, all subjects showed rightward movement in the lateral displacement during technical execution. Changes in forward and downward movements were observed in the horizontal and vertical displacements, respectively. In terms of angular shift, the shoulder joint angle tended to decrease on average, and the elbow joints showed gradually increasing angles. This finding can be explained by the shift of the coordinate points of body segments around the rotational axis in order to execute the half-bending movement that can be implemented by pulling the lower limb segments toward the trunk using the upper limb segments. The hip joint angles gradually decreased; this accelerated the rotational movement by narrowing the distance to the trunk. Movement-specific shifts in the COP occurred in the front of and vertical directions. Regarding the changes in GRF, which is influenced by the strong compressive load exerted by the supporting feet, efficient aerial movements were executed through a vertical jump, with no energy lost to the lateral GRF.

• 대한정형도수물리치료학회지
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• 제15권2호
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• pp.63-68
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• 2009

Purpose : The purpose of this study was to investigate the effect of tensor fasciae latae length on the rotation of pelvis during one leg stance. Methods : 41 healthy adults participated in this study. The movement of the pelvis and trunk was measured using 3-dimensional motion analyzer, during one leg stance. The movement of the pelvis and trunk was collected lateral shift, rotation, side bending, and flexion-extension. Tensor fasciae latae length of subjects was measured in sidelying positon with neutral position of hip joint and flexion $90^{\circ}$ of knee. Also, the range of motion of hip exteral and interal rotaion were measured in prone position wih lexion $90^{\circ}$ of knee. The subjects were separated 2 groups that more pelvic rotation group(n=15) and less pelvic rotation group(n=15) according to the degree of pelvic rotation. Results : The more pelvic rotation group was showed significantly higher in the ROM of hip external rotation than less pelvic rotation group(p<0.05). The difference of tensor fasciae latae length not showed significant difference between groups. During one leg stance, The movement of the shifting and flexion-extension of trunk and pelvis were not showed significant difference. But the side bending and the rotation of pelvis and trunk showed significant difference between groups. Conclusion : The difference of tensor fasciae latae length not showed significantly in more pelvic rotation group and less pelvic rotation group. But, this study suggests that the pelvis instability brings the instability of the trunk during one leg stance.

• 한국농림기상학회지
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• 제7권1호
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• pp.35-44
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• 2005

2000년 4월부터 2003년 9월까지 광릉 산림 소유역의 플럭스 타워를 중심으로 관측된 미기후 자료(바람, 복사, 여섯 높이의 기온과 습도의 연직분포, 토양 및 나무 온도, 강수와 토양 수분)를 분석하였다. 지형의 영향으로 낮에는 상대적으로 강한 동풍이, 밤에는 약한 서풍인 산곡풍이 지배적이고 풍향의 빈도는 서풍이 두 배정도 많다. 하향 단파 복사는 여름 몬순으로 인해 5월에 가장 크고, 생육기간의 알베도는 0.12-0.16 이며 순복사는 -100～800Wm/sup-2/의 범위를 갖는다. 29m 에서 관측된 월 평균 최고 및 최저 기온(수증기압)은 각각 7-8월에 약 25℃(～25mb), 12-1월에 -6.0℃ (～3mb)이다. 기온과 수증기압의 연직분포는 식생의 계 절변화에 따라 변화한다. 월 평균 포차의 경우, 지면에서 가장 작고(< 8mb), 봄에 가장 크고 겨울에 가장 작다. 월 평균 토양 온도는 0-20℃의 범위를 보이고, 8월에 최대값이 나타난다. 월 평균 나무 온도는 -5.8～21.6℃이며, 그 변화는 월 평균 기온과 잘 일치한다. 연 강수량은 큰 경년 변동을 보이며, 7-8월의 강수량이 년 강수량의 > 60%를 차지한다. 토양수분은 관측장소에 따라 다른 연직분포를 보이며, 강수와 관련하여 물의 수평이동이 중요할 수 있음을 보인다.