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Revista Cubana de Investigaciones Biomédicas
versão On-line ISSN 1561-3011
Resumo
ROMERO FROMETA, Edgardo; AYMARA CEVALLOS, Víctor David e ROJAS PORTERO, Josué Mesías. Effects of plyometrics on the explosive strength of lower limbs in senior freestyle wrestling. Rev Cubana Invest Bioméd [online]. 2020, vol.39, n.1 Epub 01-Mar-2020. ISSN 1561-3011.
Introduction:
Explosive strength is the physical capacity to generate greater muscular strength in a shorter time without losing effectiveness. This is a crucial component of sports training and an indirect indicator of yield in wrestling.
Objective:
Improve the explosive strength of the lower limbs through plyometric exercises performed by senior freestyle wrestlers.
Methods:
A correlational quasi-experimental study was conducted based on a three-stage plyometric program for the lower limbs. The study population was 15 wrestlers (male sex, age under 21 years) who were evaluated for explosive strength capacity.
Results:
Significant improvement was established in the following tests: vertical jump (VJ: p = 0.000), horizontal jump (HJ: p = 0.000), 20-meter dash (D20m: p = 0.000) and jump 8 (J8: p = 0.001). In all cases the post-test obtained better results. Determination was made of a moderate positive linear correlation between VJ and HJ (0.50), a moderate negative correlation between HJ and C20m (-0.58), a very low negative correlation between VJ and C20m (-0.03), a moderate positive correlation between VJ and J8 (0.61), a very low positive correlation between HJ and J8 (0.16) and a moderate positive correlation between C20m and J8 (0.59).
Conclusions:
The plyometric intervention was found to significantly improve the explosive strength of lower limbs, thus becoming an effective alternative to indirectly enhance sport yield. Of the six linear correlations performed, four were moderate, which shows that plyometric strengthening of a specific muscular plane may consecutively improve other muscular planes related to speed and explosive strength.
Palavras-chave : plyometrics; explosive strength; lower limbs; freestyle wrestling.