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김민석(MinSeok Kim),옥경달(KyoungDal Ok),이상범(SangBum Lee),탁계래(GyeRae Tack) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.2Ⅱ
의료영상의 시각화는 의료정보 시스템에서 질환 진단 시 유용하게 사용되고 있다. 특히, 2차원 의료영상의3차원 가시화를 통한 모의 견습은 실전에서의 부담감을 줄이는데 근 역할을 하고 있고 이러한 결과는 관련 S/W 개발로 이어지고 있다. 본 논문에서는 의료영상을 여러 형태로 가시화하는 방법과 그 구현 결과에 대해서 기술한다. 구현은 공개 라이브러리인 VTK를 이용함으로써 기존의 유사한 S/W에 비해 가격 경쟁력 또한 갖추고 있다.
Effects of Vertical Alignment of Leg on the Knee Trajectory and Pedal Force during Pedaling
( Daehyeok Kim ),( Jeongwoo Seo ),( Seungtae Yang ),( Dongwon Kang ),( Jinseung Choi ),( Jinhyun Kim ),( Gyerae Tack ) 한국운동역학회 2016 한국운동역학회지 Vol.26 No.3
Objective: This study evaluated the vertical and horizontal forces in the frontal plane acting on a pedal due to the vertical alignment of the lower limbs. Method: Seven male subjects (age: 25.3 ± 0.8 years, height: 175.4 ± 4.7 cm, weight: 74.7 ± 14.2 kg, foot size: 262.9 ± 7.6 mm) participated in two 2-minute cycle pedaling tests, with the same load and cadence (60 revolutions per minute) across all subjects. The subject``s saddle height was determined by the height when the knee was at 25° flexion when the pedal crank was at the 6 o``clock position (knee angle method). The horizontal force acting on the pedal, vertical force acting on the pedal in the frontal plane, ratio of the two forces, and knee range of motion in the frontal plane were calculated for four pedaling phases (phase 1: 330~30°, phase 2: 30~150°, phase 3: 150~210°, phase 4: 210~330°) and the complete pedaling cycle. Results: The range of motion of the knee in the frontal plane was decreased, and the ratio of vertical force to horizontal force and overall pedal force in the complete cycle were increased after vertical alignment. Conclusion: The ratio of vertical force to horizontal force in the frontal plane may be used as an injury prevention index of the lower limb.
Effects of Vertical Alignment of Leg on the Knee Trajectory and Pedal Force during Pedaling
Kim, Daehyeok,Seo, Jeongwoo,Yang, Seungtae,Kang, DongWon,Choi, Jinseung,Kim, Jinhyun,Tack, Gyerae Korean Society of Sport Biomechanics 2016 한국운동역학회지 Vol.26 No.3
Objective: This study evaluated the vertical and horizontal forces in the frontal plane acting on a pedal due to the vertical alignment of the lower limbs. Method: Seven male subjects (age: $25.3{\pm} 0.8years$, height: $175.4{\pm}4.7cm$, weight: $74.7{\pm}14.2kg$, foot size: $262.9{\pm}7.6mm$) participated in two 2-minute cycle pedaling tests, with the same load and cadence (60 revolutions per minute) across all subjects. The subject's saddle height was determined by the height when the knee was at $25^{\circ}$ flexion when the pedal crank was at the 6 o'clock position (knee angle method). The horizontal force acting on the pedal, vertical force acting on the pedal in the frontal plane, ratio of the two forces, and knee range of motion in the frontal plane were calculated for four pedaling phases (phase 1: $330{\sim}30^{\circ}$, phase 2: $30{\sim}150^{\circ}$, phase 3: $150{\sim}210^{\circ}$, phase 4: $210{\sim}330^{\circ}$) and the complete pedaling cycle. Results: The range of motion of the knee in the frontal plane was decreased, and the ratio of vertical force to horizontal force and overall pedal force in the complete cycle were increased after vertical alignment. Conclusion: The ratio of vertical force to horizontal force in the frontal plane may be used as an injury prevention index of the lower limb.