The Biomechanical Analysis Of HIGH V-SUPPORT1/2TWIST TO PUSH Difficulty Of Aerobic Gymnastics

Relevant Group A REVERSE CUT difficult movements with an HIGH VSUPPORT(1/2)TWIST TO PUSH have been frequently used in international and domestic competitions in recent years.As a basic difficulty,the research on this action technique can effectively promoting the consolidation and optimization of the REVERSE CUT,and guiding teaching and training.This article takes the biomechanical analysis of the HIGH V-SUPPORT(1/2)TWIST TO PUSH difficult movement as the research object,using research methods such as literature,interviews,experiments,mathematical statistics.This difficulty was quantified by the method of Motion infrared light spot high-speed motion capture system and Kistler 3D force plate.The purpose is to reveal the best movement mode and rule for the athlete to complete the difficulty,explore the factors that affect the difficulty to complete,provide theoretical guidance for the scientific training mode,and improve the specifications and success of the difficulty.In order to enrich the scientific theoretical basis of technical action training sessions.The conclusions of the study are as follows:1.When the athlete completes the HIGH V-SUPPORT(1/2)TWIST TO PUSH,the center of gravity should not be displaced too much in the horizontal direction.It is reasonable to control the change of the displacement in the left and right and front and back directions within the range of 65.09 mm and 203.20 mm,respectively.The vertical displacement of the center of gravity can vary up to 338.58 mm during the rising phase.The larger the vertical displacement of the center of gravity during this phase is,the more beneficial it is to increase the time of vacant rotation.2.The formation phase mainly relies on the kicking and swinging of the kicking leg and the swinging leg.The hip joint of the swinging leg in the range of 79 °-86 ° is an appropriate angle for kicking the kicking force.The fast swinging and powerful kicking extension can make the body produce upward acceleration to ensure that the body has sufficient upward momentum.When the hip flexion is maximum,the angle between the torso and the legs is controlled within 20 °,which is conducive to increasing the energy release level when lifting.3.The kinetic energy transformed when the elastic potential energy of the shoulder strap and hip extensor muscle group is released is the main source of erection for the acute angle support rotation 180 ° into a push-up.Before and after the two hands leave the ground,the angle of both hips reaches 180 °,and the flight time is 0.249 s.The straightness of the body can reduce the moment of inertia and make it easier to turn.4.During the landing stage,the legs are brought together,the hips are slightly flexed to cushion,the elbow joint angle is about 90 ° at the end time,the shoulder joints are neutral in the flexion and extension direction,and the average abduction angles of the left and right shoulder joints are 58.55 ° and 60.39 °,respectively.These are good for the stability of push-ups.5.The reaction force in the vertical direction of the kicking leg reaches the maximum during the knee flexion stage.During the kicking and stretching stage,the force is forward and downward and a second peak is generated.When lifting,the two hands exert the maximum force at about 0.1s of the hip extension.Coordinated synchronization and the continued effort of the second hand after the first hand leaves the ground ensure the quality of the vacated turn.