Correlation of Upper and Lower Extremities Isokinetic Strength in Elite Male

Abstract

Background and purposeMuscle strength is one of the most physically important parameters during the competition for judokas. Studies have shown that for judokas, strength in especially the knee and shoulder muscles and the strength balance between right and left sides is very important in terms of both staying in balance and doing specific techniques correctly. Our study aims to find out the correlations between isokinetic lower and upper extremity strength in elite judokas and to examine bilateral and contralateral strength ratios. MethodsThis study is designed according to cross-experimental design with randomized repeated measurements. Fifteen male (mean values: age 19.40 ± 1.24 years, height 170.55 ± 9.44 cm, weight 78.47 ± 18.55 kg, and BMI 27.02 ± 5.82 kg/m 2 ) elite judokas between the ages of 18 and 21 participated voluntarily in the study. Knee extension (EX) and flexion (FLX), shoulder internal rotation (IR) and external rotation (ER) isokinetic strength measurements of the subjects were measured with concentric/concentric (Con/Con) contractions at 60 o s -1 and 180 o s -1 angular velocities. Ipsilateral hamstring/quadriceps (H/Q), internal rotation/ external rotation (IR/ER), contralateral Q/Q, H/H, IR/IR, ER/ER ratios were calculated through lower and upper extremity isokinetic strength. Shapiro-Wilk, Levene, paired sample t-test, and Pearson correlation test were used in statistical analyses. ResultsIn terms of the ipsilateral strength ratios on dominant (DS) and nondominant (NDS) in lower and upper extremities, a significant difference was found only at 60° s -1 angular velocity in only the lower extremity on DS (P < 0.05). In contralateral strength ratios, a statistically significant difference was found between Q/Q and H/H at 60° s -1 angular velocity (P < 0.05). When the correlations between lower and upper extremities Correlation of upper and lower extremities isokinetic strength in elite male judokas e142