iron and the effects of exercise鐵與運(yùn)動(dòng)的關(guān)系(中英互譯)

1、IrontheEffectsofExercise鐵與運(yùn)動(dòng)的關(guān)系鐵與運(yùn)動(dòng)的關(guān)系Para1Sptsmedicineexpertshaveobservedfyearsthatenduranceathletesparticularlyfemalesfrequentlyhaveirondeficiencies.NowanewstudybyateamofPurdueUniversityresearcherssuggeststhatevenmoder

2、ateexercisemayleadtoreducedironinthebloodofwomen.運(yùn)動(dòng)醫(yī)學(xué)專(zhuān)家經(jīng)過(guò)多年的觀(guān)察，發(fā)現(xiàn)耐力運(yùn)動(dòng)員，特別是女性，經(jīng)常會(huì)缺鐵。普渡大學(xué)研究人員進(jìn)行的一項(xiàng)新的研究表明：即使是適度的鍛煉，也可能會(huì)降低女性血液中的鐵含量。Para2“Wefoundthatwomenwhowerenmallyinactivethenstartedaprogramofmoderateexerciseshowedeviden

3、ceofironloss”saysRoseanneM.LyleassociateprofessatPurdue.Herstudyof62fmerlyinactivewomenwhobeganexercisingthreetimesaweekfsixmonthswaspublishedinthejournalMedicine&ScienceinSpts&Exercise.“我們發(fā)現(xiàn)，那些通常不運(yùn)動(dòng)的女性一旦開(kāi)始適度的鍛煉，就會(huì)出現(xiàn)鐵含量下

4、降的跡象，”普渡大學(xué)羅斯安妮M.萊爾副教授說(shuō)。她對(duì)62名婦女進(jìn)行了研究，并將研究結(jié)果發(fā)表在《體育運(yùn)動(dòng)醫(yī)學(xué)與科學(xué)》雜志上。這些婦女原先不怎么運(yùn)動(dòng)，后來(lái)開(kāi)始了為期6個(gè)月、每周3次的鍛煉。Para3“Womenwhoconsumedadditionalmeattookironsupplementswereabletobounceback”shenotes.“Butthenewexerciserswhofollowedtheirnmaldiet

5、showedadecreaseinironlevels.”萊爾指出：“那些增食肉類(lèi)食品或服用鐵質(zhì)補(bǔ)劑的女性能夠恢復(fù)到健康狀態(tài)。但突然參加鍛煉卻仍沿用舊食譜的人則顯示出鐵含量降低。”P(pán)ara4Irondeficiencyisverycommonamongwomeningeneralaffectingoneinfourfemaleteenagersoneinfivewomenaged18to45respectively.Buttherati

6、oisevengreateramongactivewomenaffectingupto80percentoffemaleenduranceathletes.ThismeansLylesaysthat“tooishavinglowironreservesaconditionthattypicallyhasnosymptoms.Fatiguepoperfmancemaybegintoappearinthesecondstageofdefic

7、iencywhennotenoughironispresenttofmthemoleculesofbloodproteinthattransptoxygentothewkingmuscles.Inthethirdfinalstagepeopleoftenfeelweaktiredoutofbreath–exerciseperfmanceisseverelycompromised.缺鐵分為三個(gè)階段：第一也即最常見(jiàn)的階段，是鐵質(zhì)儲(chǔ)量不足。這

8、一階段一般沒(méi)有癥狀。到了缺鐵的第二階段，就會(huì)出現(xiàn)疲倦和力不從心，此時(shí)體內(nèi)已沒(méi)有足夠的鐵來(lái)形成血蛋白分子，將氧輸至運(yùn)動(dòng)肌肉。在第三即最后階段，人常常感到虛弱、疲乏無(wú)力、喘不過(guò)氣，運(yùn)動(dòng)成績(jī)大打折扣。Pare8“Peoplethinkthatifthey’renotatthethirdstagenothingiswrongbutthat’snottrue”saysJohnL.BeardwhohelpeddesignthePurduestudy

9、.“You’renotinstage3untilyourironreservesgotozeroifyouwaituntilthatpointyou’reintrouble.”“人們認(rèn)為，只要不到第三階段就不會(huì)有什么問(wèn)題。這種想法是不對(duì)的?！睅椭O(shè)計(jì)普渡大學(xué)研究的約翰L.比爾德說(shuō)?！爸挥挟?dāng)你的鐵儲(chǔ)量為零時(shí)，你才會(huì)進(jìn)入第三階段。而你若坐等到這個(gè)時(shí)候，你的麻煩就大了。”P(pán)are9Howevermostpeoplewithlowironres

10、ervesdon’tknowtheyhaveadeficiencybecausetraditionalmethodsofcalculatingtheamountofironinblood(bycheckinglevelsofthebloodproteinthattransptsoxygen)arenotsufficientBeardstates.Insteadit’simptanttochecklevelsofadifferentcom

11、poundwhichindicatetheamountofstageofironintheblood.Whileactivechildbearingagewomenaremostlikelytohavelowironsteshenotes“Menarenotsafeespeciallyiftheydon’teatmeathaveahighlevelofphysicalactivity.”(Anestimated15percentofma