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Biomechanical Analysis on Hurdle Step Technique of 110m Hurdle Male Elites of Shanghai

Author: ZhuZhiQiang
Tutor: ZhangQingWen
School: Shanghai Institute of Physical Education
Course: Physical Education and Training
Keywords: Swinging leg Hurdle Stride Biomechanical characteristics
CLC: G822.6
Type: Master's thesis
Year: 2011
Downloads: 76
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Abstract


Research purposes: by some elite male hurdler third Hurdles step swing leg bar with the technology research, analysis under the bar with the land link Kinematics and the variation of surface electromyography, and surface electromyography and kinematic parameters relationship. Provides a theoretical basis and reference for the further understanding the swing leg pressing aspects of muscle force of characteristics, improve the swing leg under the pressing land link specific training means. Methods: In this experiment, the Redlake MASD LLC production company MotionPro X-4 type high-speed dynamic the analyzer sampling frequency of 100Hz and BIOVISION EMG acquisition system sampling frequency of 1000Hz on the technical aspects of the athletes completed under Crimping ground kinematics and surface electromyography data collection, use of SIMI motion video analysis system DasyLab10.0 EMG analysis software for the subjects data processing and analysis; Finally the application Spss13.0 and Origin7.0 average, standard data results deviation and correlation analysis and mapping. Results: 1) Hurdle Step technology, the hip angular speed and hurdle step time, there is a negative correlation between the rate of speed loss. 2) extend the hip muscles are more active pressure stage of the swing leg EMG amplitude, the stage stretch hip muscles is the swing leg under the pressure of power sources, but also to support the stage level of the source of the power of the forward direction. 3) swing leg pressure stage, the hip active muscle (gluteus maximus) and antagonistic muscles (tensor fascia lata) collaborative shrinkage is proportional to the angular velocity of the hip. Conclusions: 1) hip to play a leading role in the swing leg Hurdle, the movement of the knee has been with the hip movement. 2) in swinging leg pressure and support phase, gluteus maximus and femoral muscles and support activities under the pressure of the swing leg played an important role in training should strengthen the muscles. The preliminary study, the outstanding hurdler test muscle activity timing: the swing leg hip flexion phases: tensor fascia lata, rectus femoris, semitendinosus and biceps femoris activated at the same time, the gluteus maximus is not involved in not activated . Swing leg hip extension phase: the gluteus maximus, biceps femoris, semitendinosus activated at the same time. Tensor fascia lata, rectus femoris at that stage to be activated. The swing leg landing stage: the gluteus maximus, biceps femoris, semitendinosus simultaneously activated, tensor fascia lata. Rectus femoris muscle at this stage is not activated. 3) hip flexion muscle coordination characteristics simulated game posture should strengthen the training of the hip, fast method of strength training.

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CLC: > Culture, science,education, sports > Sports > Athletics > Run > Hurdle
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