An Analytical Study to Compare Some Kinematic Variables between the Attempts of Failure and Success of the Skill of the Back Aerobic Somersault from Stability among Parkour Players

Abstract

Abstract The purpose of this paper is to study compare the main kinematic variables between the attempts of failure and success of the skill of the back aerobic somersault from stability among parkour players. In this study, three cameras were used at a rate of 240 pictures per second. A success movement and a failure movement were selected for each player for the three-dimensional analysis, and through the results, it appeared that the path of trying to succeed was longer than trying to fail in time. The velocity of the hand clip and the maximum velocity in the successful attempt were greater than those in the failure attempt and this result was an increase in the velocity of the projectile and an increase in the vertical height of the center of mass. When getting up in event (2) the amount of flexion of the hip and knee joint angle contributed to the optimum state of getting up and at the peak point, the angle of the hip and knee joint was flexed to the maximum to reduce the moment of inertia. At this point, too, the upper extremities of the attempt to succeed are extended more than those of the attempt to fail.