Study On The Influencing Factors And Evaluation Index System Of Lower Limb Joint Stability Of Competitive Aerobics Athletes

Competitive aerobics is a kind of power and coordination as the core of the project,the core of the aesthetic cycle of non skilled movement,with the completion of the music with the difficulty of complete sets of movement.The lower limb joint stability occupies an important position in the competitive aerobics project,this paper adopts literature data method,expert interview method,mathematical statistics method,collation and analysis of relevant indicators of lower extremity joint stability,study the index system of Competitive Aerobics athletes lower limb joint stability,a screening and competitive aerobics project related index system,provide the objective basis for the stability evaluation of Competitive Aerobics athletes lower limb joint.The main conclusions are as follows:1 the stability of lower limb joints is important to the performance of athletes,the emergence of sports injury and the special ability.2 through the expert questionnaire survey and the analysis of the competitive aerobics movement mode and the characteristics of the project,the establishment of the first level indicators and 11 indicators of the two indicators reflect the lower limb joint stability evaluation index system.Among them: the first level indicators: proprioception,core strength,isokinetic muscle strength,functional screening.3 using the analytic hierarchy process to calculate the weight of each index,reflecting the importance of each index in the evaluation index system.Among them,the weight of the first level indicators were: proprioception 0.4564,isokinetic muscle strength of 0.1461,core strength of the functional screening,0.3032,0.0944.4 the evaluation index system established in accordance with the evaluation index system,the consistency ratio CR is less than 0.1,and the judgment matrix has satisfactory consistency.The rationality of the evaluation index system has also been recognized by experts.Recommendation: Competitive Aerobics special action requires the overall coordination of athletes and the stability of each joint to complement each other,in the training of special ability,should strengthen the practice of these two areas.