Relationship of Bilateral Asymmetry and Bilateral Deficit with the Change of Direction Speed in Cadet Karate Athletes: A Pilot Study

Abstract

Background: Bilateral asymmetry (AB) and Bilateral Deficit (DBL) and their potential negative relationship with physical performance is currently studied, although the relationship with change of direction speed (CODS) and linear sprint (5-M) in karate athletes is unknown. Aim: To examine correlations between AB and DBL with CODS and 5-M, as well as between horizontal jump with CODS and 5-M. Methods: Ten male cadet athletes voluntarily participated in this study. The physical abilities assessed included: bilateral horizontal jump (SBJ), right unilateral horizontal jump (RSBJ), left unilateral horizontal jump (LSBJ), CODS and 5-M. Subsequently, AB and DBL were calculated. Results: Low AB (5.17 ± 3.61%) and presence of DBL (-36.9 ± 6.2 %) were reported. Moderate correlations between AB with CODS (r = -.38; R² = .15%; p = .30) and 5-M (r = -.47; R² = .22%; p = .19) and between DBL with 5-M (r = .51; R² = .26%; p = .16) and low with CODS (r = .20; R² = .04%; p = .60). Significant correlations (p < .05) between CODS with RSBJ (r = -.92; R² = .85%; p = .00), SBJ (r = -.87; R² = .75%; p = .00) and LSBJ (r = -.82; R² = .67%; p = .00). Conclusions: AB and DBL would be negatively related to CODS and 5-M. However, CODS is related to bilateral and unilateral horizontal explosive strength.