مساهمة بعض المتغيرات الكينماتيكية المصاحبة لمراحل الأداء على حصان القفز في رياضة الجمباز

الملخص EN

This study aimed at identifying the values of some kinematic variables accompanying the performance stages (approaching, rising, first flight, grounding, pushing, second flight and finally landing), among male students of gymnastics training course at Yarmouk University, and comparing the kinematic variables accompanying the performance stages on the jumping horse among male students gymnastics training course with the national team player, to see points of strength and weakness.

The researchers used the descriptive approach.

The sample of the study consisted of (6) students from the gymnastics training course at Yarmouk University, and their performance was compared with the performance of the national team gymnastics player.

The following kinematic variables were analyzed: (The speed of body gravity center in the last three steps, the average step length for the last step, the complementary angle of bending the pelvis, the complementary angle of bending the knee, the complementary angle of extending the joint of the shoulder, following the trajectory of body gravity center, the height of body gravity center ,and the angle of the arm with the horse at the moment of grounding on the jumping horse, and the complementary angle of bending the knee joint, and the total time of attempt.

The results of the study showed that the angles of the bodies of the sample of the study were different in all stages of performance from the running stage to the landing stage, that led to a variation in the height and trajectory of their gravity center, and that stepping onto the elevation ladder at optimal angles may lead to an improvement in skill performance, and an increase in the center of body gravity, and that the angle of grounding after the first flight may be decisive in the process of kinematic transmission for better performance.