Kinematic Analysis of the Dominant and non- Dominant Side among Jordanian Team Players in the Back Squat Exercise
Abstract
This study aimed to the kinematic analysis of the dominate and non- dominate side among of the Jordanian sports players in the back bar squat exercise by identifying the values of some kinematic variables on the dominate and non- dominate side among the Jordanian sports players in different intensities. As well as, the differences in these kinematic variables values. To achieve this, the researchers used the descriptive approach on a sample of (15) players and they were chosen by the purposive method, so that their training includes squatting for not less than two years. To photograph the study sample, the researchers used (3) cameras, two were placed at the side level and one at the front level, where the performance of the players was analyzed using the Kinovea program for kinetic analysis. The study dealt with many kinematic variables such as the angle of the back, the pelvis, the knee and the arm torque of the knee joint. To process the study data, the researchers used means, standard deviations, skewness, Wilcoxon test and T.test. The results of the study showed that the technique of the study sample was marred by some errors, as well as there are a statistically significant differences between the preferred and non-preferred men according to the intensity variable in the height of the iron bar at the maximum descent at the intensity of 50%, and the variable arm torque on the pelvic joint at the intensity of 70% and at the intensity 90, as well as in the variable of the height of the pelvic joint at the maximum descent at the intensity of 70%, while there were no statistically significant differences between the preferred and non-preferred men according to the intensity variable in the rest of the variables, as the value of the significance level of these variables was greater than the value 0.05. The researchers recommend that the correct technique of the iron bar path should be observed during descending and ascending.
Keywords: Kinematic, Back squat, Bar, Jordanian national team, the preferred side.
