| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 103 === Purpose: This study was to investigate the effect of two kinds of vibration interventions (semi-squat and hip adduction) on Vastus Medialis Obliquus (VMO) and Vastus Lateralis (VL) muscles activity during stair descent and drop jump in female athletes. Method: Twenty-four healthy female athletes were randomly assigned to three group, including the control group (age: 20.13±2.17 years), the vibration group (age: 20.75±1.28 years) and hip adduction vibration group (age: 21.5±2.39 years). The 3D motion analysis system, force plate, EMG sensors and biodex were used to collect movement, ground reaction force, muscle activity and isometric strength during stair descent and drop jump, and Visual 3D software was used to analysis data. The variance of pretest-posttest among control group, vibration group and hip adduction were compared by One-way ANOVA. The significant level was set at α=.05. Results: The variance of pretest-posttest of joint angle range, joint moment, VMO:VL muscle ratio and onset-time were not significantly in the three groups during stair descent. The variance of pretest-posttest of joint angle range, ground reaction force, VMO:VL muscle ratio were not significantly in the three groups during drop jump. The variance of pretest-posttest of VMO and VL EMG onset time of vibration group (-14.34±16.35) and hip adduction vibration group (-14.34±16.35; -14.53±9.25) was larger than control group (4.93±9.44) during drop jump. The Knee extensor muscle strength was not significant. Conclusions: The results indicate that the female athletes with vibration training interventions improved the variance of pretest-posttest of VMO and VL activity onset time.
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