A Study On The Development Trend Of Women's Uneven Bars In Tokyo Olympic Cycle

The 47-49 World Championships were held under the guidance of the 2017 edition of the international women's artistic gymnastics code of point.It is not only the realistic need but also the most urgent task to grasp the development trend of the uneven bars.Therefor,this paper adopts the methods of documentation,video observation,mathematical statistics,logic analysis and contrastive analysis,takes the top eight athletes in the final of the 47-49 World Championships as the main research object,and the top eight athletes in the final of the 31 st Rio Olympic Games as the auxiliary research object,analyzes the development trend of the complete set of uneven bars movements in the Tokyo Olympic cycle from the aspects of the contents and composition of the complete set,the structure of the difficulty movements,the structure of the difficulty movements arrangement,the relationship between difficulty score,execution score and total score.The results are as follows:1.From the point of view of the complete set of action content and composition :(1)The mounts tend to simplify,and the difficulty of kip to support in A group will still be the first choice;(2)The main types of high bar and same bar are short radius circle with turn,long radius circle with turn,saltos and flight over high bar.The movements of short radius circle with turn are mostly used by foreign athletes,and Pike sole circle bwd with 1/1turn(360°)most used;The movements of long radius circle with turn are mostly used by Chinese athletes,Giant circle fwd in reverse grip to hstd with initiation of 1/1 turn(360°)on one arm before hstd phase and Giant circle fwd in L grip with initiation of 1/1 turn(360°)on 1 arm before hstd phase are the standard movements in the set of Chinese athletes,in addition,some of our athletes during the current cycle have added the difficult movement of E group giant circle fwd in reverse grip with 540° turn in the complete set;In the flight movements of saltos and flight over high bar,the use of Jaeger Salto piked increased for up group in this cycle;The selection of flight over high bar movements increased in E?F and G group.The main type of low bar and same bar is radius circle with turn,the number of actions is reduced,and the number of people used is less,it is mainly used in the combination form which is connected with the low bar to grip the high bar,starting with short radius circle with turn after the mounts on the low bar,except for kip and swing bwd to handstand,most of the athletesdid not add the low bar and same bar difficulty action in the set arrangement,use a combination form of flight with gripchange between two bar instead.(3)From low bar to grasp on high bar is dominated by "shapo" with or without turn,the selection of actions focused on pike sole circle bwd through hstd with flight and 180° turn to hang on HB and pike sole circle bwd through hstd with flight to hang on HB,from low bar to grasp on high bar basically reached 2 times per person;Pak salto will still be the main action from high bar to grasp on low bar,from high bar to grasp on low bar 2 times maximum.(4)The main selection type of dismounts is backward salto,swing fwd to double salto bwd tucked with1/1turn(360°)will still be the main option.(5)The use of transition movements is mostly between 2~4,and the optimization of transition movements will be an effective way to improve the benefits of the whole set of movements.2.From the point of view of the difficulty movement structure:(1)The movements of D and E group are the main elements of the difficulty structure,while the movements of D group are the core elements of the main elements,C and D group movements reduced,and there was a tendency to move to E?F and G group actions.(2)In addition to the group 3-giant circles and the group 4-stalder circles,the group 5-pike circles class actions has gradually become the focus of selection.3.From the point of view of the difficulty movement arrangement structure:(1)The connection of two actions will still be the main arrangement form,the connection of three and four actions have space for further development,the connection form of five actions is currently used less,its development still needs a longer period of time;(2)The total value of the eight highest difficult movements showed an increasing trend,and the connection value mostly between 0.5~0.7,there was an increase at 0.6 and 0.7 points;(3)New features of difficulty movement arrangement: new connection arrangement form of five actions;the arrangement form of F and G group actions were increased;the use of the short radius circle with 1/1turn(360°)connection with dismounts increased;the difficulty movement arrangement is efficient,novel and has potential promotion space.These aspects will be a breakthrough to improve the complete set of Difficulty score and appreciation.4.From the point of view of the relationship between Difficulty score,Execution score and total score: difficulty is the basis,higher Difficulty score make it possible to be in theforefront,but still need good completion quality to provide security,Difficulty score and Execution score complement each other,the improvement of the total score(achievement)needs two aspects of coordinated development,both cannot be biased;while improving the difficulty,but also need pay more attention to the completion,guarantee quality.