운동역학 : 태권도 돌려차기시 관절운동의 분석 = Analysis of the Anatomical Kinematics at the Joints during the Roundhouse Kick in Taekwondo

다국어 초록 (Multilingual Abstract)

This research has its aim in analyzing characteristics of 3-D multi-axial motions and relative angular motions between each segments centered on the hip joint when the roundhouse kick, one of the most basic kicking techniques in Taekwondo, is executed.
In order to accomplish this research agenda, eight Taekwondoists were chosen as subjects of this study. Local axes were embedded on each segments of lower extremities and the hip joint, Then, Cadan Angles were applied to calculate the relative angles of each segment and to analyze kinematic variables found in the process. The following conclusions were found.
In order to execute quick and effective roundhouse kick, priority must be given to the training of minimizing the time taken by gradually increasing the velocity of the kick toward the direction of kicking just before the maximum knee flextion.
Three-dimensional angular motions originating from the hip joint must be in the state of maximum external rotation just before knee extension.
On impact, on the other hand, it must be in the state of maximum internal rotation and maximum abduction. Also, by fixing the hip joint, the knee joint serves as the pivoting point to make the rotation of ankle joint and tiptoe possible. It is essential to properly understand relative relationships found in flexion/extension, adduction/abduction, and internal/external rotation.
The most important characteristics of the roundhouse kick is enabling the endpoint of distal segment to have maximum velocity on impact through harmonious transfer of the velocity from proximal segment to the distal segment.