논문 상세보기
pp.13-31
This study investigated factors affecting the behavior hurdles by six male high school student
athletes and six average high school students using the ground reaction force and video analysis
equipment. The conclusions by comparative analysis of kinematic and kinetic elements for stable
operation of the high school men's hurdles to help effective guidance are as follows. 1. The analysis of Kinematics. First, required time of the athlete by all each section in the duration from ground of the stamping foot to stamping of landing foot appeared to be shorter than average students. Second, variation of height in variable distance from the center of the body changes the height of the cloud initiative is high ground and not out in the player. After that, the highest score of body-centered rather was recorded by general student. However, athlete showed higher score again in landing and stamping by landing foot. Third, athlete showed higher sway velocities in all section at variable speed. General students showed higher landing speed at the landing position. Fourth, athlete maintains the leaning forward upper body position at the stamping and landing situation. Especially in the highest score in body-centered, athlete showed over 20 degree than general students. Fifth, Athlete showed faster angular view than general student in all section. 2. The analysis of kinetic variable First, the athlete exerts rear position in the variation of before and after ground reaction force of stamping foot. In contrast, general student exerts front position. Second, Fx, Fy, Fz of the resultant change in the maximum measurement of R (max) values in the ground reaction force of stamping foot showed much stronger stamping food force in athletes than in the general student. Third, athlete and general student exerts outside and inside direction, respectively, at the variation of ground reaction force from landing and stamping position. Forth, athlete recorded higher than 1.5 time than general student at the variation of combined force of Fx, Fy, and Fz of ground reaction force of laning foot. In conclusion, the instruction of raising stamping foot to the forward direction to lean the upper body in the forward is needed for the general student to natural hurdle action. At that time, undisturbed balance at the center body must be maintained by both arms and flexibility training should be concurrent for forward dirction attention. General student should practice to roll shortly and strongly when they are stamping. In order to instruct the student proper posture through the hurdles classes, the exercises for basic strength and flexibility should be conducted simultaneously. Also, the instruction will be effective, if let the students practice the hurdle motion with understanding of principle of the body for jump.
