Effects Concentration, Arm Muscle Strength, And Wrist Flexibility On The Accuracy Of Forehand Drives And Backhand Drives

This study aims to obtain a structural equation model of the direct and indirect effects between psychological and physical factors, namely concentration, arm muscle strength, and wrist flexibility on the accuracy of forehand drives and backhand drives on table tennis extracurricular activities at Al Falah Deltasari Middle School in Sidoarjo Regency. This study uses quantitative research with nonexperimental design research, using correlational methods. The subjects of this study were students who followed table tennis extracurricular aged 12-15 years consisting of twenty-eight students. Data were analyzed by descriptive statistics using the SPSS 22.0 program. Testing with hypotheses is done by correlation test, and multiple correlation. Based on the results of the correlation test in this study X1 concentration and accuracy of forehand drive with a value of r count 0.406> r table 0.367, X2 arm muscle strength and forehand drive accuracy r counts 0.370> r table 0.367, X3 wrist flexibility and forehand drive accuracy 0.381> r table 0. 367. Then the second variable X2 concentration r counted 0.374> rtanel 0.367, arm muscle strength r counted 4.21> rtable 0.367, wrist flexion counted 0.379> rtable 0.367. Next, the multiple correlation test is X1 concentration, X2 arm muscle strength X2, X3 Wrist Strength to the accuracy of the forehand drive with R value is 0.374, then the significance of F is 1,300 with R Square 14%. Furthermore, for X1 concentration, X2 arm muscle strength X2, X3 Wrist Determination of backhand drive accuracy with R value is 0.911, then the significance of F is 1.442 with R Square 15.3%. Keywords— concentration, arm muscle strength, wrist flexibility, accuracy.