| Título |
Eccentric-concentric Ratio: A Key Factor for Defining Strength Training in Soccer |
| Autores |
Javier Nunez, F. , de Hoyo, Moises , Munoz Lopez, Alejandro , Sanudo, Borja , Otero-Esquina, Carlos , Sanchez, Hugo , GONZALO SKOK, OLIVER |
| Publicación externa |
Si |
| Medio |
INTERNATIONAL JOURNAL OF SPORTS MEDICINE |
| Alcance |
Article |
| Naturaleza |
Científica |
| Cuartil JCR |
2 |
| Cuartil SJR |
1 |
| Impacto JCR |
2.556 |
| Impacto SJR |
1.099 |
| Fecha de publicacion |
01/11/2019 |
| ISI |
000494695300008 |
| DOI |
10.1055/a-0977-5478 |
| Abstract |
The aims of this study were to analyse the effect of chronic strength training over concentric power (CON), eccentric power (ECC), ECC/CON ratio, and 20 m linear sprint performance in elite young soccer players. Twenty young elite Spanish soccer players were assigned to an experimental group (CPG) which performed a front-step exercise using a conical pulley, 2-3 sets of 6 repetitions each leg, during 9 weeks (CPG, n=10) in addition to its usual strength training, or to a control group (CG, n=10). The improvements in the ECC mean power (36%, ES=1.61), and ECC / CON ratio (17%, ES=1.77) were substantially greater in the CPG than in the CG while the CON mean power (16%, ES=0.83) was substantially greater in the CG than in the CPG. The sprinting time for 10 m (2.8%, ES=0.78) and the 10 m flying time between 10-20 m (1.72%, ES=0.41) were substantially enhanced in CPG and CG respectively. To be efficient when defining a functional strength training and performance increments using an inertial device, the mean power output need to be measured during the CON and ECC phases and an analysis of the ECC / CON ratio should be included. |
| Palabras clave |
rotatory inertial device; mean power; sprint performance; force-vector training; resistance training; young soccer players |
| Miembros de la Universidad Loyola |
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