Quantitative Study Of Chinese Female Hammer Thrower Wang Zheng's Preparation For The 2018 Tokyo Olympics' Movement Technique And Mental State

At the 19th CPC national congress,general secretary Xi Jinping made it clear to the sports system:we should accelerate the building of a strong sports country.The building of a strong sports nation is an important measure and strategic arrangement for the building of a healthy China.It is also an important step to realize the two centenary goals and realize the great rejuvenation of the Chinese nationn.The level of competitive sports is the most intuitive national sports competition and sports development,for a long time,the international community is a widespread use of competitive sports achievement to evaluate national and regional sports development situation,therefore,the construction of sports power,the key in the health strategy implementation in China,the first in the development of competitive sports,and the most direct expression of the level of competitive sports,is in the world championships and Olympic Games medal competition in global competition,gain success.Track and field events are one of the major events of the Olympic Games.China has few competitive events in track and field at the Olympic Games.As a key event for winning MEDALS,women's hammer ball has become the focus of China's national track and field team's preparation for the 2020 Tokyo Olympic Games.The Asian women's hammer record holder,wang zheng,has been one of the most important players in the national track and field team's preparations for the 2020 Tokyo Olympics.Therefore,it is of great significance to analyze wang zheng's hammer throw technology and quantitatively study its changes in technology and psychological state for China's track and field practice goals in the future,to help promote the construction of a healthy China and to realize the goal of becoming a sports power.In this paper,through literature,tracing investigation,experimental film,quantitative methods of analysis and logical reasoning,to rayne and domestic main rival throwing XiangQun rona to participate in the 2018 national track and field(1),the 2018 national track and field throwing XiangQun(2)and(2)of the 2018 national track and field grand prix in three games for the three-dimensional tracking,and collected rayne pre and post the psychological state of the data.Through the quantitative analysis of wang zheng's technical performance and psychological state,the following research conclusions and Suggestions were drawn:1.When wang zheng completed the throwing,compared with the previous ones,the total rotation time showed an increasing trend,and the characteristics of rapid acceleration in the rotation phase were not obvious.It is suggested to emphasize the consolidation and performance of dominant techniques in the later training.2.In the throwing process,wang zheng's single-foot time allocation was relatively reasonable on the whole,but the third and fourth lap single support time in the single-lap allocation time was relatively long,which affected the final effect of acceleration.In the later training,the emphasis should be on improving the third and fourth laps of single-leg support time.3.In the throwing process,wang zheng's center of gravity changed regularly and its fluctuations were reasonable.4.In the process of rotation acceleration,the shoulder and hip angles of wang zheng were not stable,and the upper body's torsion tension was not enough.In particular,it was obvious in the final exertion stage,which affected the final shot effect.It is suggested to strengthen the training of core strength in the later training and carry out special conversion exercises of core strength.5.In the process of throwing,the running Angle(fan Angle)of wang zheng's hammer ball changed reasonably and steadily.However,in the process of acceleration,the running track of the hammer ball showed unstable fluctuations.It is suggested that the complete throwing stick holding method should be used in the later training to strengthen the correction of holding device acceleration and hand height.6.According to the evaluation results of the volition scale of senior athletes,wang zheng's five-dimensional mental state was basically normal,but his self-control was slightly insufficient and his evaluation score was low.It is suggested to strengthen self-control training from self-control guidance and external reinforcement.7.Wang zheng had a strong sense of anxiety before the competition,which was mainly reflected in three dimensions:individual failure anxiety,social anxiety and physical anxiety.In addition,individual failure anxiety and social expectation anxiety were negatively correlated with the performance of the competition.It is suggested that the elimination of these psychological anxieties should be taken as the key content to be incorporated into the preparation system.8.Wang zheng's emotional performance tended to be stable after the competition,but generally showed a low state.According to the long-term tracking study,wang zheng did not or did not fully adapt to the current coach's coaching style,which is also the main reason why wang zheng's mood in the recent training matches was not high.It is suggested to make adjustments in the later period according to the training and preparation plans.