Kinematic analysis of the time variable and its relationship to some bio-kinematic variables and the performance of the wheel skill on the floor movements mat for gymnast players aged 7 – 9

Abstract

Controlling the time to perform each part of the human wheel movement in a way that serves the goal is one of the important factors that determine the success of the continuity of the movement performance. Therefore, it is very important for the athlete to learn the ability to control how to show acceleration during rotation, and show momentary stillness during balance. The success of executing the human cartwheel depends on the strength and speed of propulsion of the legs and hands, as well as on the mutual relationship between them. It is noted that one of the problems that many players fall into, which causes a decrease in the level of human cartwheel performance, is the weakness of the relationship between time variables in various parts of the movement on the one hand. As well as the weak correlation between time and the rest of the bio-kinematic variables and this leads to not employing the time variable and the bio-kinematic variables in the stages of implementing the human wheel in a way that serves the sequence of the motor path of the movement. The study aimed to kinematicly analyze the time variable and some bio-kinematic variables in the skill of the human wheel, and to identify the relationship between the time variables in the track of the human wheel and the relationship of the time variables with the bio-kinematic variables, as well as the relationship between the performance of the human wheel and the bio-kinematic variables under investigation. The two researchers assumed that there is no statistically significant relationship. Between some time variables in the human wheel track. Likewise, there is no statistically significant relationship between some time variables and some bio-kinematic variables and the performance of the human wheel skill. The research sample included 12 players from the National Center for Nurturing Sports Talent in Gymnastics. The human wheel skill was photographed with a camera with a speed of 120 frames per second, and a group of bio-kinematic variables for parts of the stages were analyzed.   The most important results reached by the two researchers: Most of the correlations were significant between time variables for different stages of the human wheel, and this confirms that players realize the importance of time in determining the quality of performance. The emergence of a large number of non-significant relationships between time variables and other bio-kinematic variables, as this indicates Due to the randomness in the use of time in the service of bio-kinematic variables, the non-significant results between time and other variables confirm their lack of harmony and consistency in working with each other. and this achieves one of the sustainable development goals of the United Nations in Iraq which is (Quality Education).