The body at the beginning of the take-off phase, the collision angle at the moment of touching the foot. A comparative study of a number of biomechanical variables for the final step at two different heights for Iraqi high jump champions

Abstract

The research aims to identify the values ​​of some biomechanical variables of the last step at two different heights for Iraqi high jump champions. And to identify the comparison of the values ​​of some biomechanical variables of the last step at two different heights for Iraqi high jump champions. The researcher used the descriptive approach with a comparison method for its suitability and the nature of the research. The research sample was chosen intentionally and their number was the best (5) five advanced jumpers for athletics for the year (2024). The researcher used statistical methods, the arithmetic mean, the coefficient of variation, and the (T-test) for related samples. The standard deviation. For the purpose of statistically processing the data, the researcher used the program (5.SPSS, v.21). Some of the biomechanical variables were identified by referring to the content analysis of the literature, previous studies, scientific research, and some professors specialized in the field of high jump. The researcher concluded that the biomechanical variables under study have a significant effect on the height of the high jump, and that the variables (the speed of the last step, the ankle angle of the take-off foot at the moment the take-off foot touches the ground, and the potential energy of the body at the highest height) are the most biomechanical variables contributing to the height of the jumpers in the effectiveness of the high jump. Because there was a positive effect with the speed of the jumpers' launch and then achieving a better height and the jumper's height is directly affected by the increase in angular velocity and linear momentum in the jump phase.