점프 수행능력 증대 훈련방법으로서의 드롭 점프의 운동역학적 특성

Abstract

The drop jump is a popular form of plyometric exercise often udnertaken to enhance jump height. Despite its popularity why the drop jump is superior as a training method for jumping ability than other jump styles? That is still unclear. The purpose of this study is to comparea mong the jumping styles; countermovement jump, drop jump, squat jump, and then to identify which one is more effective training method at aspect of overload and specificity. Motion and force data were recorded for each performance and used to compute kinematic and kinetic variables, including jump height, hip, kne eand ankle angles, resultant joint force, resultant joint power, maximum GRF and a number of temporal variables. Teh average of 8 trials(n=8) for each jump styles(countermovement jump, drop jump, squat jump) was used i na series of repeated measures ANOVA . We conclude that the countermovement jump may be more effectiv ethan the drop jump and the squat jum p at jump performance, that the drop jump may be more effectiveh tan the countermovement jump and the squat jump at aspect of overload for enhancing the peak propuilosn during upward phase, and that the drop jump has a greater training exercise specificity to performance a quick jump performance than the others.