A Comparative Analysis Of The Use Of Free Agents In The Top Four Of The 2018 18th World Women's Volleyball Championship

The World Women's Volleyball Championship is one of the three major volleyball competitions,second only to the Olympic Games.It is the highest level of Volleyball in the world today,and has attracted the attention of volleyball teams all over the world.By using the methods of documentation,video observation,mathematical statistics and comparative analysis,this paper makes a comparative analysis of the technical application ability of five free men in the top four teams of the 18 th World Women's Volleyball Championship in 2018,including Popovich,Dejinaro,Wang Mengjie,Knip and Short,and finds out the freedom of Chinese women's volleyball team.The gap and deficiency between man and the free man of the world women's volleyball team are concluded as follows:1.The height of the free person in this women's Volleyball World Championship is between 172-182 cm;the average Ketoley index is 382.4;the age span of the free person is large,showing a trend of polarization;the number of free person participating in the world's top competitions varies greatly,and the experience gap is obvious.2.In the first attack system,Wang Mengjie has the highest receiving and serving arrival rate,Wang Mengjie has the lowest error rate and Wang Mengjie has the highest receiving and serving efficiency.Therefore,Chinese women's volleyball freelancers are in the front line in receiving and serving.Italian,Dutch women's volleyball and Serbian women's volleyball teams are slightly behind and have their own advantages.3.In the counter-attack system,Italian women's volleyball Freeman De Ginaro has the highest proportion of receiving spikes and hanging balls,while Serbian women's volleyball Freeman Popovich has the highest rate of receiving attacks,while Chinese women's volleyball Freeman Wang Mengjie has a low rate of arrival,a high rate of mistakes and a low efficiency of catching balls.There is a clear gap between the ability of receiving spikes and hanging balls and the strong team freemen.4.In the defense system,the proportion of the total number of intercepted balls from high to low is Popovich,Wang Mengjie,De Ginalo and Knip;the arrival rate of intercepted balls from high to low is Popovich,Wang Mengjie,De Ginalo and Knip.Serbian women's volleyball freelancer Popovic has the largest number of catches,high arrival rate,high defensive enthusiasm,and the ability to catch and block the ball is obviously stronger than other freelancers.5.In the push and attack system,Italian women's volleyball freelancer De Ginaro has the highest arrival rate,reaching 100%.Chinese women's volleyball freelancer Wang Mengjie and Dutch women's volleyball team Knip have made undesirable mistakes,that is,the ball is not in place.In the competition,the push ball is regarded as the opportunistic ball of the defensive side,which is less difficult for the free man.Wang Mengjie,the Chinese women's volleyball free man,has a gap in the ability of prediction and reaction.6.In the second pass and cushion adjustment,De Ginaro can also pass and cushion fast-break balls in the counter-attack,low-arc and high-arc attacks,while other free men can only pass and cushion high-arc strong-break balls.Italian women's volleyball free man De Ginaro is obviously superior to other free men in the second pass,cushion adjustment ability and tactical awareness.