Research On The "fluctuation And Fall" Phenomenon Of Competitive Performance In The Chinese Women's Volleyball World Championships In The 2018 World Championships And Its Countermeasures

In the 2018 Women's Volleyball World Championships,the Chinese women's volleyball team lost Italy in the semi-finals,and finally defeated the Netherlands in the 3rd and 4th finals,and won the third place in this World Women's Volleyball Championship.To this end,this paper uses the literature data method,video observation method,mathematical statistics analysis method and logic analysis method to carry out statistical analysis and research on the technical and tactical application effects of Chinese women's volleyball team in the 2018 World Women's Volleyball Championships,in order to find out the Chinese women's volleyball team's competition.The horizontal "fluctuation" phenomenon and its influencing factors,and analyze the strategy to deal with the "fluctuation" phenomenon,provide reference and reference for the training of Chinese women's volleyball team in the future.conclusion as below:1.The Chinese team has a high frequency of Z-stage phenomenon in the winning game,and the negative stage is prone to the L-stage.The P and Z stages in the victory have experienced many competitive units.The start and end of each game will have a greater impact on the success of this game.The start and end of the game will affect the final result of this game.Enter the game as soon as possible,and use its own characteristics to establish an advantage as soon as possible.Keep the Z-stage competitive units as much as possible,use the technical and tactical changes at the end,end the P and L stages,enter the Z stage as soon as possible and end the game.2.The key technical factors affecting the Chinese women's volleyball competition level are the serve score rate,the serve failure rate,the smashing rate,the rear defensive turnover rate and the 4th position smash rate.3.When the second pass is at the 4th,5th,and 6th positions,the three rounds of the serve positions from the right to the left are free people-main attack-main attack,response-free man-main attack and main attack-free man-main attack,China The number of serve-ups increased,the rate of arrival decreased,the rate of error increased,the score of the 4th position decreased,and the overall score decreased.This affected the overall offensive effect of the Chinese team and the phenomenon of "card wheel" and entered the L stage.4.When the second pass was at the 4th position,the opponent will receive the pressure of the serve and turn to Zhang Changning and Gong Xiangyu.Under the double pressure of attacking and receiving the ball,Zhang Changning caused her offensive efficiency and the efficiency of receiving the ball to drop;when the second pass was at 5,At the 6th position,Zhu Ting and Zhang Changning received the drop in the serve rate and the increase in the turnover rate was due to the fact that the front row took on more offensive tasks,resulting in a decline in physical fitness and attention,resulting in the Chinese team receiving the serve in these two rounds.Inefficiency and frequent mistakes,under the influence of psychological changes and physical decline,the level of technical and tactical decline is large,making the entire attack series ineffective.5.The Chinese team's main technical coping strategies in the PK and LZ stages of the game are to improve the serve scoring rate,break the power,receive the ball in place,the half-receiving rate,the smashing rate,the block scoring rate and the blocking rate.The rear defensive in-position rate and half-receiving rate reduce the rate of self-failure.6.Chinese team in the P-Z and L-Z tactics of the winning and losing team focused on the 4th position,the 3rd position fast ball and the rear 3D attack,and reduced their own mistakes.The tactical coping strategies of the Chinese team in the PZ stage of the Basic Bureau are to strengthen the 4th position,the 3rd position fastball and the rear 3D attack.The LZ stage is to strengthen the 2nd position,the rear 3D attack and the stepping attack.The tactical coping strategy is to strengthen the 4th position and the rear 3D attack.The LZ stage is to strengthen the 3rd position fast ball,the 3rd position back,the rear 3D attack and the step attack.The P-Z stage tactical coping strategy of the deciding game is to strengthen the 4th position.suggestions below1.Enter the game state as soon as possible,grasp the Z-stage to establish the score advantage,increase the number of occurrences,length and control the proportion of the whole game,which has a direct effect on winning the game.2.In the game,improve the serve scoring rate,the 4th position smash rate,reduce the receiving serve turnover rate,the smashing rate,and the rear defensive turnover rate.3.When the second pass is at the 4th,5th,and 6th positions,if the Chinese team enters the L stage,the serve formation can be properly adjusted,so that Zhang Changning and Zhu Ting can take one or two rounds to focus on the offense,or change in time.Let it adjust its mindset and replace it with this round.4.When the score is behind or deadlocked,use fast and variable offensive means to restrain the opponent from blocking and reduce pressure for our offense.5.In terms of gains and losses,in the daily training and competition,we must pay attention to the stability of the training team members in the advantages and disadvantages of the environment.