•  
  •  
 

Abstract

This study aimed to conduct a kinematic analysis of the dominant and non-dominant sides among Jordanian sports players in the back squat exercise by identifying the values of some kinematic variables on the dominant and non-dominant sides at different intensities, as well as the differences in these kinematic variable values. To achieve this, the researchers used a descriptive approach with a sample of 15 players, who were selected using a purposive method, ensuring that their training included squatting for no less than two years. To record the study sample, the researchers used three cameras—two positioned at the lateral view and one at the frontal view—while the performance of the players was analyzed using the Kinovea program for kinematic analysis. The study examined several kinematic variables, including the angles of the back, pelvis, and knee, as well as the arm torque at the knee joint. To process the study data, the researchers employed means, standard deviations, skewness, the Wilcoxon test, and the T-test. The results showed that the technique of the study sample exhibited some errors, and there were statistically significant differences between the preferred and non-preferred sides concerning the intensity variable in the height of the barbell at maximum descent at an intensity of 50%, as well as in arm torque at the pelvic joint at intensities of 70% and 90%. Additionally, there were significant differences in the height of the pelvic joint at maximum descent at an intensity of 70%. However, no statistically significant differences were found between the preferred and non-preferred sides for the intensity variable in the remaining kinematic variables, as the significance levels for these variables were greater than 0.05. The researchers recommend that the correct technique for the bar path should be observed during both descending and ascending movements.

Download

Share

COinS