The Relationship of Some Biomechanical Variables in the Explosive Force of the Two Legs and the Achievement of the Effectiveness of the Long Jump

Abstract

This research aims to identify the values of some biomechanical variables (linear momentum, rise and fall (m. S. K) of the body during preparation for the rise and explosive force of the legs , whether it is the left or right leg, work and ability, as well as some angles of the joints of some parts of the body that contribute to the achievement of the competitors. The long jump, the research sample consisted of the best (6) students from all stages of the College of Physical Education and Sports Sciences / University of Mosul who are proficient in the long jump for the 2019/2020 academic year. Data were collected through videography and the analysis was done by using (Adobe Photoshop), (Image Ready) and the program (Auto Cad 2010) , in order to identify the values of some of the biomechanical variables selected in the second section of the approach (weighted steps), especially the moment when the advancing foot touches the elevation plate and the moment when the advancing foot leaves the elevation plate (collision, push) despite the shortness of this stage Chronologically compared to the time of the rest of the technical stages of the long jump and its relationship to the explosive force of the