muscle eccentric training for endurance running

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
JŸm-1Ÿkg-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