| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 106 === This study conducted a kinematical analysis was of the female long jumpers and characteristics in each jump for provide a reference for traning and teaching of female long jump. A 240 Hz high-speed camera be used to record the motion of eight female long jump athletes in the final game of 106 New Taipei City National Youth Cup Track and Field Championships. A body model consisting for 14 segments and 21 markers of two-dimensional analysis of the motion video was performed. The raw data was smoothed using Butterworth filter (6 Hz) to further calculate the performance of the stride distance, pedal time, and take-off phase. The independent sample was used to test the differences between the kinematic parameters between the top four and the last four groups, and then use the Pearson product difference. Understand the correlation between various kinematic parameters and official and effective results, with a significant level of α = .05. The results of this study found that no difference was found on the top four and the last four were in the stride distance, touch-down time, touch-down horizontal velocity, touch-down vertical velocity, take-off horizontal velocity, take-off vertical velocity, body CG angle and height at take-off. The only significant difference is the jump distance between the two groups. In addition, the horizontal and resultant of body CG at take-off are significantly positively correlated with the official jumping distance. Conclusion: There are differences in performance between the top four and the bottom four, but the characteristics of motor skills are similar. Therefore, the performance of athletic performance can be improved by modifying the skills of each link.
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