iron and the effects of exercise鐵與運動的關(guān)系(中英互譯)

1、IrontheEffectsofExercise鐵與運動的關(guān)系鐵與運動的關(guān)系Para1Sptsmedicineexpertshaveobservedfyearsthatenduranceathletesparticularlyfemalesfrequentlyhaveirondeficiencies.NowanewstudybyateamofPurdueUniversityresearcherssuggeststhatevenmoder

2、ateexercisemayleadtoreducedironinthebloodofwomen.運動醫(yī)學(xué)專家經(jīng)過多年的觀察，發(fā)現(xiàn)耐力運動員，特別是女性，經(jīng)常會缺鐵。普渡大學(xué)研究人員進行的一項新的研究表明：即使是適度的鍛煉，也可能會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)，那些通常不運動的女性一旦開始適度的鍛煉，就會出現(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。她對62名婦女進行了研究，并將研究結(jié)果發(fā)表在《體育運動醫(yī)學(xué)與科學(xué)》雜志上。這些婦女原先不怎么運動，后來開始了為期6個月、每周3次的鍛煉。Para3“Womenwhoconsumedadditionalmeattookironsupplementswereabletobounceback”shenotes.“Butthenewexerciserswhofollowedtheirnmaldiet

5、showedadecreaseinironlevels.”萊爾指出：“那些增食肉類食品或服用鐵質(zhì)補劑的女性能夠恢復(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?！盤ara4Irondeficiencyisverycommonamongwomeningeneralaffectingoneinfourfemaleteenagersoneinfivewomenaged18to45respectively.Buttherati

6、oisevengreateramongactivewomenaffectingupto80percentoffemaleenduranceathletes.ThismeansLylesaysthat“tooishavinglowironreservesaconditionthattypicallyhasnosymptoms.Fatiguepoperfmancemaybegintoappearinthesecondstageofdefic

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

8、一階段一般沒有癥狀。到了缺鐵的第二階段，就會出現(xiàn)疲倦和力不從心，此時體內(nèi)已沒有足夠的鐵來形成血蛋白分子，將氧輸至運動肌肉。在第三即最后階段，人常常感到虛弱、疲乏無力、喘不過氣，運動成績大打折扣。Pare8“Peoplethinkthatifthey’renotatthethirdstagenothingiswrongbutthat’snottrue”saysJohnL.BeardwhohelpeddesignthePurduestudy

9、.“You’renotinstage3untilyourironreservesgotozeroifyouwaituntilthatpointyou’reintrouble.”“人們認為，只要不到第三階段就不會有什么問題。這種想法是不對的?！睅椭O(shè)計普渡大學(xué)研究的約翰L.比爾德說。“只有當你的鐵儲量為零時，你才會進入第三階段。而你若坐等到這個時候，你的麻煩就大了?！盤are9Howevermostpeoplewithlowironres

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

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