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1、-1．2英文摘要(ABSTRACT)Thespanofsportlifeisacomplicate,developingandsystematicprocess,andthelengthofgroupAofA-gradeathlete'ssportspanreflectsourcountry'sfootballlevel.Itisthemostvalidmeansofpromotingourfootballleveltoprolongcurrentplayers'sportspanbecausetheneedofimproveme
2、ntofreserve.ThisthesistheoreticallyanalyzedtheconceptofsportspananddidacomparisonresearchontheageofgroupAofA-gradeathletes.Thisresearch,basedonprevioustheoriesofsport-lifespan,sporttraining,sportpsychology,sportphysiology,sportdietetics,sportgenetics,sportmedicineetc.
3、,selects6primaryindexes,whichincludetrainingfactor,dieteticfactor,medicalfactor,socialfactor,psychologicalfactor,pedagogyfactor,otherfactortobethemaincausesaffectinghighlevelprofessionalfootballathletesinourcountry.Theresultshows:theaverageofsportlifespanofthehighleve
4、lprofessionalfootballathletesinourcountryis10.36years.Amongthem,theaverageagethebestsportsobtainedstageis1.10years；theaverageagethebestsportssteadystageis8.41years；theaverageagethebestsportskeepstageis0.85years.The11factorsoffirsttenis:prompttreatmentandrestorationofW
5、oundedandsick、trainingsystematiccharacteristicandscientificnatureofmanyyearandthewholeyear、thetrainingmethodscientificnatureinordertomaintenanceathleticstateafterathleticsabilitydrops、thearrangementrationalityintrainingprocessload、willqualityandpsychologybearingcapaci
6、ty、thedepthoflovingandpayingforthespecial、thetechnicalutilizationnotreasonablycausesnotessentialtobeinjuredthusthereducedmovementlife、eachitemofphysicalqualitytrainingintegrityandsystematiccharacteristic、thequalitycannotfollowthecompetitiontoneedtocausetoretireaheadof
7、time、dedicationtowork、whetherperfectandstrictofthemedicalaffairssupervisethesystem.ThepurposeofthisresearchistofindtheCharacteristiclawofthehighlevelprofessionalfootballathletesinourcountryandthemainfactorsaffectingsportspanofthehighlevelprofessionalfootballathletesin
8、ourcountry,andtoprovidebasictheoriesonprolongingtheirsportspan.6---Keywords:Highlevelprofessionalfootballathletesinourcountr
