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脂溶玛咖提取物游泳耐力

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Supplementationofstandardizedlipid-solubleextractfrommaca(Lepidiummeyenii)increasesswimmingendurancecapacityinrats

EunHyeChoia,1,JungIlKangb,1,JaeYoungChoa,SeungHoLeeb,TaeSeokKimb,IkHyunYeob,HyangSookChuna,*

FoodSafetyResearchCenter,KoreaFoodResearchInstitute,516Backhyun-dong,Bundang-gu,Sungnam-si,Kyonggi-do463-746,SouthKoreab

InstituteofFood&Culture,PulmuoneHoldingsCo.Ltd.,Seoul120-600,SouthKorea

a

ARTICLEINFOABSTRACT

Articlehistory:Received8June2011Receivedinrevisedform7March2012

Accepted8March2012Availableonline4April2012Keywords:

Lipid-solublemacaextractSwimmingenduranceAntifatigueAntioxidantstatus

Theeffectoflipid-solubleextractfrommaca(Lepidiummeyenii),whichcontainsmaca-mides,onswimmingendurancecapacity,asanindicatoroffatigue,inweight-loadedforcedswimmingratswasinvestigated.Theswimmingtimestoexhaustionofratssupple-mentedfor3weekswith30and100mg/kgofmacaextractincreasedby25%and41%,respectively.Supplementationwith100mg/kgofmacaextractreducedserumlactatedehy-drogenaseactivityandmusclelipidperoxidation,andincreasedhepaticandmuscletotalglutathionecomparedwiththosevaluesincontrols.Thelevelsofenergysourcesandserumlactateremainedunchangeddespitethelongerswimmingtimeinthesupple-mentedratsthanthoseincontrols.Theseresultssuggestthatsupplementationwithlipid-solublemacaextractimprovedswimmingendurancecapacityandthiseffectcanbeexplainedpartlybyattenuationofexercise-inducedoxidativestress.

Ó2012ElsevierLtd.Allrightsreserved.

1.Introduction

Maca(Lepidiummeyenii)belongstotheBrassicaceaefamilyandgrowsonlyinthehighplateausofthecentralAndesofPeru.MacahasbeenusedbyAdeanIndiansforthousandsofyearsasafoodstuffandtraditionalmedicine,especiallyasanaphro-disiactoenhancesexualdriveandfertility,andasatonicforIncawarriorstoincreasetheirenergyandvitality(Wang,Wang,McNeil,&Harvey,2007).Macahasrecentlyattractedinterestsasadietarysupplementbecauseofitspotentialpositiveeffectsonphysicalandsexualactivity.Dietarysupplementscontain-

ingmacaareavailablethroughouttheUnitedStatesandSouthAmerica(Gonzalesetal.,2001).Recently,severalstudieshavebeenconductedtoexamineitsbiologicalactivity,butmostsci-entificstudiesofthebiologicalactivityofmacahavefocusedonenhancingsexualperformanceorfertility.Althoughtworeportsshowedtheincreasedendurancecapacitywithsupple-mentationwithfermentedmacapowder(Shinetal.,2008)oraqueousmacaextract(Zhengetal.,2002),thosestudiesfoundthatveryhighdosesuptog/kgwereneeded.

Atthestartofexercise,theenergysourcessuchasglucoseandglycogenareusedfirstandmaybecomeexhausted,and

*Correspondingauthor.Tel.:+82317809273;fax:+82317099876.E-mailaddress:hschun@kfri.re.kr(H.S.Chun).1

Theseauthorscontributedequallytothiswork.

1756-4646/$-seefrontmatterÓ2012ElsevierLtd.Allrightsreserved.http://dx.doi.org/10.1016/j.jff.2012.03.002

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关键词:(提取物游泳,游泳耐力,溶玛咖,玛咖提取物,脂溶)

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