The Analysis About Difficult Actions Of High Level Aerobics Athlete

Summary of competitive aerobics competition in recent years, the difficulty ofmovements and scoring, competitive aerobics difficult exercises in the score in thegradually increasing, this trend prompted improving the comprehensive quality anddifficulty to complete athletes biomechanical research more deeply. Of competitiveaerobics technical features and research status at home and abroad, from theperspective of biomechanics analytic difficulty movement characteristics has becomethe research trend of competitive aerobics, for analysis and discussion on the athletes’technology is reasonable, to help athletes improve difficulty scores, thus improve theperformance. Can also make the athletes’ training is more normative and pertinence.This paper, taking JiangXi normal university graduate student, international ShouMin calisthenics athletes athletes as the research object. To jump Shou Min ChaoC796shear type spin360°(difficulty coefficient is0.7) and D278no support inaccordance with the YiLiuXin without support vertical split leg (difficulty coefficient0.8) two representative high score, acrobatic moves biomechanics analysis.The results show that:Change the scissors jump of360°After take-off stage, the movement for athletes in the run-up of stretching stage,ankle, knee, hip bend buffer, in turn Angle is appropriate, otherwise cause musclecontraction time is too long, hinder the stretching speed. Shou MinChao within0.12spoint of view, the rapid increase of27.64°show that stretching in quickly.Empty stage exchange leg moment athletes torso Angle is13.456°, trunk deviationfrom the vertical axis Angle is small, basic vertical body, this helps focus continues torise, high quality finish in a subsequent action. ShouMin chao splits in maximum cheating on time Angle is181.213°, and hasreached more than to the requirement of air splits in the rules, but a lack of controlathletes left foot ankle.Empty stage of360°, hip active reverse, drive the trunk and lower limbs, armand shoulder joint initiative consciousness is not enough, because athletes follow upturns more hip slow, cause the body to reverse, so the athletes unstable ground, thebody tilted in the direction of the swinging leg.End of buffer finish landing phase, the athlete knee, ankle joint cushion AngleAngle of best landing buffer, athletes joint landing process, in turn, sufficient buffer.But the ground tilt in the direction of the swinging leg, with the twist in the process offollow up the deficiency of the body.Without support in accordance with the YiLiuXin support hang ground：Beginning stages, the athletes physical control is good, is used to control the stabilityand balance of the shoulder joint control is better, left and right shoulder joint Angle is165.753°respectively,165.442°, degree show that athletes arm for keeping control,and the time of swinging leg hip in acquiring acceleration, Angle is168.569°, for thenext phase of the hair force have a certain space, ensure power speed and legswinging acceleration.No support in accordance with the lessor stage, athletes around the rotation of thebody in the process of the leg and swinging leg in the vertical plane row full360°, thesplits must reach180°Angle, through3d technology analysis, according to datafrom the athletes right body just8.6°Angle, said athletes body close to turn the legs,in accordance with the lessor splits Angle is173.549°rotation process, requirementsfor rules, there are still a certain gap. And left ankle Angle of only163.235°, thecompletion of quality for the action of this in motion has a great influence.Without support vertical phase, without supporting vertical require chest, hip,knee and ankle on a straight line, and cheating on Angle of180°, two legs Anglewhile meet the requirements of the rules, swinging leg deviates from the verticaldegree is bigger, and the swinging leg ankle is out of control, the act assessment. End stage, the requirements for hip fulcrum, active service, torso clip legs at thesame time, the data indicate that athletes head speed higher than the speed ofswinging leg, suggests that athletes body active force, second leg speed increase,active clamp that athletes legs actively.