我國(guó)優(yōu)秀健美操運(yùn)動(dòng)員李媚C507動(dòng)作的運(yùn)動(dòng)學(xué)特征分析與診斷.pdf

1、武漢體育學(xué)院碩士學(xué)位論文我國(guó)優(yōu)秀健美操運(yùn)動(dòng)員李媚C507動(dòng)作的運(yùn)動(dòng)學(xué)特征分析與診斷姓名：姚婕申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：運(yùn)動(dòng)人體科學(xué)指導(dǎo)教師：李玉剛20090501AbstractResearchpurposes：BasedonC507difficultymovementofaerobicssportsbiomechanicsresearch，discussesthebasiccharacteristicsandregularity，thu

2、spromotingtheaerobics，perfectingthesystemtheoryandprovidetheoreticalbasisforscientifictrainingResearchmethods：UsingtwonissanpanasonicNVMD9000fixed，fixedfocuscamera，spacerwaysynchronously(externalsynchronous)，exposuretime

3、of1／500sec，frequencyfor50cyclespersecondToanalysisandevaluationthetestobjecttechnologymovesand3dimagesanalyticaldataResearchresults：(1)TheathletesfinishC507difficultymovementused3660sectortaltimeTake—ofjFstretchingtimefo

4、rO220seconds，andemptiedofbodygravityforO660seconds(includingrisetimeforO260seconds，downtimefor0400seconds)，supportforgroundbuffertimeis0960seconds(2)IntheC507difficultymovementprocess，bodyweightchangedisplacementislesser

5、inthedirectionofYaxisThatshowaboutbodyshakinglittleamplitudeTake—offtolandingonthedisplacementofthebodyisonlyfor0222metersontheXdirectionBodygravityinthemaximumdisplacementontheZdirectionto1357meters(3)TheXdirectionofmax

6、imumspeedofbodygravityiS1652m／s。whichismainlyrunupphasechange；ThemaximumspeedinYdirectionsforO655m／s，littleamplitude；TakeoffintheZdirectiononthemaximumvelocityvaluefor2562m／s，thebodytouchdownwhen3867rn／sformaximumvelocit

7、y(4)ThespeedoftwolegkneechangefluctuatlyintrendThelargestamountchangewhichareduringtake—offstageandsuspension，andthebowedlegsthanstraightlegsKneesandlegslegkneeunbendofmaximumspeedfor4081rn／sand483lmeterspersecond，areris

8、inginsuspension(5)Thespeedoflegunbendtheanklehavethelargestamountchangeduringtake—ofrstretchingstageandemptiedstage，phasechangeemptiedrisein2200emptiedwhen6。887maximumspeed／sec。Duetotheathletesintherunupstageadoptssingle

9、feetandlegsjumpapproachwill，SOatthisstagekneeslegunbendlegchangefasterthantheankleBowedlegsanklespeedachievemaximum4261meterspersecondin2160secondstovacatetherise(6)Theankleintakeoffcushioningandtake—offstretchingtwostag

10、es，thebiggestchangeat85o～160OLeftrightkneemomentsintheAngleofbufferfor80oand8809themaximumheightinsuspensionfor170oandabout50DprobablyRightandlefthipbetotheminimumwhenthegravitytothehighestThemainconclusion：(1)whentheath

11、letesfinishC507difficultymovement，thecontrolaccuracy，bodyposture，everyactionlegibleactionlinkbetweencompact，coherentButbecauseoflumbarabdomenmusclepowershortages，SOphysicalcontrolabilityispoorwhenlandinginthebuffer(2)Usi