The impact of the area of pivot base on some kinematic variables in the jumping skill on the pad with different ways among gymnastics athletes in Jordan )

Abstract

The impact of the area of pivot base on some kinematic variables in the jumping skill on the pad with different ways among gymnastics athletes in Jordan

 This study aimed at identifying the impact of the area of pivot base on the values of some kinematic variables in the jumping skill on the pad with different ways  as well as the impact of the athlete's height on the area of pivot base and some kinematic variables. The study sample consisted of (3) athletes who were chosen randomly and the researchers used the descriptive approach due to its compatibility to the study nature and objectives. Kenova software as well as the statistical package (SPSS) were used for analyzing the results. The results showed that there are differences regarding the values of the kinematic variables in the different jumps on the jumping pad. The results revealed that there is a negative relationship between the pivot area and the kinematic variables regarding the different jumps on the jumping pad between the height of the weight center on the pad and the height of the mass center at the time of pivot, the standing angle, the step time and the step length. The results showed that there is a negative relationship between the athlete's height and the kinematic variables in the front jump and between the length of the arm angle with the stem as well as the step time and the standing angle. The researchers recommended the necessity of paying more attention to the anthropometric variables when choosing the junior athletes in order to get a better performance.