Abstract
Pre-Season Bilateral Strength Asymmetries of Professional Soccer Players and Relationship with Non-Contact Injury of Lower Limb in the Season
Highlights
The most soccer injuries are connected to the lower extremities, which is not unexpected, because soccer is described by high intensity and intermittent switches of direction at high loads (Wong & Hong, 2005)
According to Iga, George, Lees, and Reilly (2009), soccer players practically at no time use the both lower limbs by the identical prominence, this inclination is associated to the hemispheric authority of the brain on the reverse area, which may be the reason of an anomalous deficit in professional soccer players
The percentage of players who suffered non-contact injuries in the lower limbs is 33.61%, of which 31.43% of injured players are in pre-seasonal imbalances above critical level, and 34.50% of injured players has 10% difference between preferred and non-preferred lower limb, indicating that up 65.50% of injured soccer players has pre-seasonal asymmetries (≥10%) (Figure 1)
Summary
The most soccer injuries are connected to the lower extremities, which is not unexpected, because soccer is described by high intensity and intermittent switches of direction at high loads (Wong & Hong, 2005). Most reports signified that soccer players are commonly within the extreme rates of strength asymmetry (Tourny-Chollet, Leroy, & Beuret-Blanquart, 2000; Weber, Silva, Radaelli, Paiva, & Pinto, 2010). According to Iga, George, Lees, and Reilly (2009), soccer players practically at no time use the both lower limbs by the identical prominence, this inclination is associated to the hemispheric authority of the brain on the reverse area, which may be the reason of an anomalous deficit in professional soccer players. Some soccer players have presented diversities in strength and flexibility between dominant and non-dominant legs (Rahnama, Lees, & Bambaecichi, 2005) and even biomechanical asymmetry between them (Dörge, Andersen, Sørensen, & Simonsen, 2002). Some soccer players have presented diversities in strength and flexibility between dominant and non-dominant legs (Rahnama, Lees, & Bambaecichi, 2005) and even biomechanical asymmetry between them (Dörge, Andersen, Sørensen, & Simonsen, 2002). Ekstrand, Hagglund, and Walden (2011) and Dick, Putukian, Agel, Evans, and Marshall (2007)
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