蘇州市優(yōu)秀短跑運動員起跑及加速跑的運動學分析.pdf

1、蘇州大學碩士學位論文蘇州市優(yōu)秀短跑運動員起跑及加速跑的運動學分析姓名：孫東華申請學位級別：碩士專業(yè)：體育教育訓練學指導教師：陸阿明201109AbstractTh。e—K—inematicAnalysisonSpnntStartofelitesprintersinSuzhouTheKinematicAnalysisonSprintStartofelitesprintersinSuzhouAbstractPurposes：Usinghig

2、hspeedcamerasandmotionanalysistechnologyKinematicsdatawerecollectedfromelitesprintersinSuzhouThestudyanalyzedandidentifiedthecharacteristicsofsprintstartandtheapproachrunoftheathletesandcomparedtheseparameterswithoutstan

3、dingrunnersabroad，inordertOfindanddiagnosetheskillsthattobeimprovedThedatacollectedinthispaperwouldbeahelpfulmaterialforthefuturestudyMethods：SixelitesprintrunnersparticipatedinthisstudyThekinematicparametersofthesprints

4、tartwereestablishedonthebasisofa2Dkinematicanalysis，usingtwohighspeedcamerawithafrequencyof100frames／seetheparameterswereanalyzedandcomparedwithtopsprintrunnersintheworldResults：Thetechnologyofourelitesprintrunnerisclose

5、tOtheircontestantoverseas；Duringacceleratedphaseofrunning，thedurationofthesupportlegincontactwiththegroundreducesgraduallyalongwiththeincreasingspeedPartialoftheathletes’supportingtimeisexcessivelylongwhilethelengthofstr

6、idevariedbetweensubjects；ThedistancebetweenthecenterofgravityprojectionpointandfootstrikepointisreducinggraduallythefootstrikepointmovesaheadgraduallybeforethecenterofgravityprojectionpointThetorsolifts，namelythecenterof

7、gravitypromotionrhythm(promotionspeed)variedwithsomeathletesbenttorsoinsufficientlyConclusions：Comparedwithoutstandingrunners，TheSuzhououtstandingsprinterspossessareasonable“set’’positionDuringtheacceleratedstage，partial

8、athletespossiblyrunwithaunreasonablestridelengthatthebeginningofthestartTherhythmneedtobecontrolledWealsosuggestedthatthetorsopromotionrhythmneedtobecontrolledKeywords：sprintstartkinematicsacceleratedphaseⅡWrittenbySuper