步行好还是跑步好

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1、IsItBettertoWalkorRun?步行好，还是跑步好？WalkingandrunningarethemostpopularphysicalactivitiesforAmericanadults.Butwhetheroneispreferabletotheotherintermsofimprovinghealthhaslongbeendebated.Nowavarietyofnewstudiesthatpittedrunningdirectlyagainstwalkingareprovidingsomeanswers.Theirconclusion?Itdependsa

2、lmostcompletelyonwhatyouarehopingtoaccomplish.步行和跑步是最受美国成年人欢迎的运动项目。然而究竟是走还是跑更利于健康，人们一直争论不休。最近有不少直接比较跑步与步行的新研究给我们提供了一些答案。他们的结论是？——到底谁更好，基本上完全取决于你的期望。If,forinstance,youarelookingtocontrolyourweight—andshallowlyornot,Iam—runningwins,goingaway.InastudypublishedlastmonthinMedicine&ScienceinSports

3、&Exercise,andunambiguouslytitled“GreaterWeightLossFromRunningthanWalking,”researcherscombedsurveydatafrom15,237walkersand32,215runnersenrolledintheNationalRunnersandWalkersHealthStudy—alargesurveybeingconductedatLawrenceBerkeleyNationalLaboratoryinBerkeley,Calif.假如你想减重——无论肤浅与否——跑步更胜一筹，而且大比分领

4、先。今年4月发表在《体育医学与科学》(Medicine&ScienceinSports&Exercise)上的一篇文章清楚明白地打着这样一行标题：《跑步比步行更利于减重》(GreaterWeightLossFromRunningthanWalking)。研究者梳理了参与“全国跑步与步行健康研究”的15237名步行者和32215名跑步者的调查数据。该大型调查由加州伯克利市劳伦斯伯克利国家实验室(LawrenceBerkeleyNationalLaboratory)进行。Participantswereaskedabouttheirweight,waistcircumference

5、,dietsandtypicalweeklywalkingorrunningmileagebothwhentheyjoinedthestudy,andthenagainuptosixyearslater.参与者在调查开始时汇报了自己的体重、腰围、饮食习惯和通常每周或走或跑的英里数，六年后再次汇报以上数据的变化。GettyImagesTherunnersalmostuniformlywerethinnerthanthewalkerswheneachjoinedthestudy.Andtheystayedthatwaythroughout.Overtheyears,therunne

6、rsmaintainedtheirbodymassandwaistlinesfarbetterthanthewalkers.跑步者在调查初期就普遍比步行者瘦，而且之后一直保持。几年下来，跑步者在控制体重指数和腰围方面远比步行者强。Thedifferencewasparticularlynotableamongparticipantsover55.Runnersinthisagegroupwerenotrunningalotandgenerallywerebarelyexpendingmorecaloriesperweekduringexercisethanolderwalker

7、s.Buttheirbodymassindexesandwaistcircumferencesremainedsignificantlylowerthanthoseofage-matchedwalkers.这种差异在55岁以上的参与者中尤其明显。此年龄段的跑步者并不进行大量跑步锻炼，也不比同龄步行者每周消耗的卡路里多。但他们的体重指数和腰围显著比同龄步行者低。Whyrunningshouldbetteraidweightmanagementthanwalkingisnotaltogether