短跑加速跑前四步運(yùn)動(dòng)學(xué)分析.pdf

1、東北師范大學(xué)碩士學(xué)位論文短跑加速跑前四步運(yùn)動(dòng)學(xué)分析姓名：李艷霞申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：運(yùn)動(dòng)人體科學(xué)指導(dǎo)教師：王小虹20050501AbstractOneintegratedtechniqueisconsistsofmanycontinuousteaches，andoneofthemmustaffectthenearInordertopenetrateintothefirstfourstepofsprintaccelerativenlil

2、，wemustunderstandthestudyactualityofitscharacteristicandtofoundthesidesthatrequirebeimprovedTheaimofbiomechanicstun’stechniqueistevealthegeneralregularityandtostudythewaysofrunfasterandeconomyPracticeprovesthatsingletheo

3、ryanalysisCallnotgettotheaim；wemustusetheexperimenttestSo，theaimofthistextistosearchthedifferenceoftheinferandtheresult，andlookforthefactorsofeasymakemistake，offerreferenceforthecouchandtheathleteandsearchthebreakthrough

4、wayoftrainingThemostparametersoftheexperimentdon’tpresentregularchangethewriterthinkthatthemainreasonsarethetechniqueisnotstable，twosides’strengtharenotequilibrium，pliabilityisinadequatestrideandfrequency’srelationisnotd

5、ealwithproperlyandsoonWhenunderstandingthetechniqueofthefirstfourstepsofaccelerativerunweoughttoadversethefellowsmoreover(1)Theextentofbodyleanandlegdrive’sangledependODtheconditionofbodysufferedpowerIfyouwantuselesslegd

6、rive’sangleandmoreleangesturetun，youmustpossesslargehorizonmlweightandlargebackturnmoment(2)AttheSalTletimeofbodylean，ifyoucanmakethebodyastraightline，theaccelerationwillbemoreeffectual(3)Itisbetterthatmakethefirststep’s

7、pointoffallmoreapproachedthecenter’sprojection(4)Alterthemuscle’stensionofswinglegcanchangethefrequencyofthelegrevolvethehipbone’sswing(5)Becausethemostimportantfactorofrestrictcyclingactisvelocitynotthestrideorthefreque

8、ncNitispracticablethatcorrespondthestrideandthefrequencyaccordingtotheaimspeedandfindthefittingrhythmtotheendThistextraisesthreeadvancesinaddition；meyarethefirst，tosupplementtheworkingstyleofmuscle，thesecond，tostudyandex