مقارنة مسار مركز ثقل الجسم و قيم بعض المتغيرات الكينماتيكية عند أداء مهارة الشقلبة الهوائية الأمامية المكورة على أجهزة مختلفة لدى لاعبي المنتخب الوطني للجمباز

Abstract EN

This study aimed at comparing the track of the center of body gravity and some kinematic variables when performing aerobic 'forward somersault skill' on sports floor mat and the trampoline among the national gymnastics team players, to know the strengths and weaknesses, and to improve the level of performance, and reach the ideal performance on the sports floor mat and the trampoline.

the researcher used the descriptive approach as it suits his study.

the sample of the study consisted of (7) players from the national gymnastics team; photos were taken at Princess Rahma Gymnastics Hall.

the results were analyzed using (Kinoves 0.8.27) for kinematic analysis.

their aerobic 'forward somersault skill' performance on sports floor mat and trampoline were compared, and the following kinematic variables were analyzed : (tracing center of body gravity, the angle of the shoulder at the beginning of the performance, the height of the center of body gravity, the angle of the pelvic joint at the beginning of the performance, the complementary angle of the knee at the beginning of the performance and the speed of the player during the performance of 'forward somersault skill' from the beginning to the end).

the results of the study showed that the player on the sports floor mat needed greater muscle strength to increase the push-up process to complete the skill properly, and the time of performing the 'forward somersault skill' was less on sports floor mat compared to the trampoline, due to the speed of performing the skill between both sides.