muscle eccentric training for endurance running
Transcript
muscle eccentric training for endurance running
MUSCLEECCENTRICTRAININGFOR ENDURANCERUNNINGPERFORMANCE CantorTarperi1,LucaFesta1,AntonioLaTorre2,FedericoSchena1 1DeptofNeurologicalandMovementSciences,UniversityofVerona CentroperlaPreparazioneallaMaratona 2DeptofBiomedicalSciencesforHealth,UniversityofMilano MSH2015–Interna=onalCongress,12-13November2015,Rovereto ENDURANCEPERFORMANCE Coyle et al. 1999 TRAININGSTRATEGY +strength [SEILERetAl.ScandJMedSciSports2006] KNOWLEDGES KNOWLEDGES [BeaUeK,SportsMed.2014] KNOWLEDGES [Gault and Willems, Aging Dis. 2013] [StørenOetAl.MedSciSportsExerc.2008] 6weeks MST:(2t/w:4sets-4rep.)+endurancetr. RT:(2t/w:3sets-10rep.)+endurancetr. CTRL:onlyendurancetr. [Piacen=niMFetAl.JStrengthCondRes.2013] KNOWLEDGES 8weeks (3t/w:4sets-4rep.)+endurancetr. KNOWLEDGES [Assumpçãoetal.Scien=ficWorldJournal.2013] ECCENTRICEXERCISES ECCENTRICEXERCISES [Dufouretal.MedSciSportsExerc.2004] [LaStayoetal.AmJPhysiol2000] [Dufouretal.MedSciSportsExerc.2004] ECCENTRICEXERCISES 12weeks3t/w Hypothesis: in recrea=onal runners, the eccentric strength program, added to a regular endurance training, c o u l d l e a d n e u r o m u s c u l a r adapta=onsallowingbenefitsinRE AIMOFTHESTUDY ComparetheREvaria=onpre-postaregularendurance trainingprogramaddedtoaspecificeccentricmuscleefforts (Yo-YoLegPress), versusanloworhighintensitytrainingprograms nopathologies noothersport n Age Height Weight V’O2max EccentricStrength Training EST 9 44.5±6.0 169.0±9.1 71.3±9.4 48.8±5.1 HighIntensity Training HIT 9 42.2±8.6 171.2±6.8 70.9±11.9 50.3±3.7 LowIntensity Training LIT 11 45.4±8.0 171.8±9.6 66.1±11.7 50.2±6.7 SUBJECTS 40-50yy previousexperiencesforhalfmarathoninlastyear TRAININGLIT EVALUATIONS RUN FOR SCIENCE EVENT POST PRE TRAININGHIT 21K TRAININGEST 3DAYS 13/01/14 10weeks 3/2/14 1/3days 13/04/14 16/4/13 EXPERIMENTALDESIGN EVALUATIONS METHODS Bioenergetics & muscle Gasexchangedataanalyser,Quarkb2,CosmedIT • V’O2max;vV’O2max;VT1;VT2;CE Isocine]cLegPress,TechnogymIT • 1RM 1RM Metabolic lab Body composition DEXA,QDRExplorerW,Hologic,MAUSA • FatFreeMass,(FFM,%FFM) • FatMass,(FM,%FM) • totalbodyandarm/leg Anthropometry lab Field performance • Vmax2–10–21km Centro Maratona EST:trainingcharacterizedby1t/w4set7rep.onYo-YoLegPress atmaximalpower+3t/wsessions,running@70-105%ofRV LIT:3t/wsessions,running@70-105%ofRV EST 4 series - 7 max. rep. LIT LOW INTENSITY HIGH INTENSITY RV= INTERVENTION HIT:3t/wsessions,running@95-140%ofRV STATISTICS ONEway ANOVA (Turket) TWOway ANOVA RM (Bonferroni) *p<0.05 RESULTS Pvalue≤0.05 1RMshownasignificantincrease from144to162kgforthegroup EST RESULTS Pvalue≤0.05 Therewasnosignificantchange inFatFreeMassofLegsinany groups RESULTS RESULTS RESULTS IMPROVEDEFFICIENCYINEST RESULTS Pvalue≤0.05 REshownasignificant reduc=onfrom4.5to4.3 Jm-1kg-1fortheESTgroup RESULTS aver21KM RESULTS aver21KM RESULTS aver21KM * * * Hendersonetal.JPhysion2007 RESULTS aver21KM * * RESULTS aver21KM areducedcKat+6hhand+18hhavertheeffort Thisresultscouldbeexplainbyneuraladapta=onsuchas: Anincreasedmuscleac=va=on Abexersinchroniza=onofmotorunitsrecruitment (Agreaterefficiencyincoordina=onintra/intermuscolar) Anincreasedα-motorneuronsthreshold Adecreasedinhibi=onofGolgi’sapparatus (Paavolainen1999,Taipale2013) DISCUSSION -5.3%inREisinagreementwiththepreviousstudies +12.5%in1RMwithouthypertrophyisslightlylowerthan theresultsexis=nginliterature UNTR LOWTR HIGHTR [ŻebrowskaAetAl.INTJSPORTSMED.2013] IGF1 Andperhapsanimplica=onofIGF-1factor… Thistrainingmethod,therefore,appearsgood forrecrea=onalrunnersintermsof: ü Facilityofexecu=on ü Safety ü Saved=me CONCLUSION 1t/wof4setsof7rep.ofECCENTRICEXERCISE issufficienttoimproveREand1RM withoutmusclehypertrophy(andwithoutinjuries) ACKNOWLEDGEMENTS Prof.FedericoSchena Prof.AntonioLaTorre Dr.LucaFesta Dr.Kris=naSkroce CentroMaratonastaff Prof.LippiGiuseppe Prof.SalvagnoGianLuca ClinicalBiochemistrystaff Dr.ChiaraMilanese Dr.MFPiacen=ni