Quantitative Analysis Of The First Offense And Defensive Scoring Effects Of U15 Women's Volleyball Team In The Second Youth Games

In the 1950 s,the Chinese women's volleyball team entered the world stage with an unbeaten record of five consecutive championships.After a short period of decline,the Chinese women's volleyball team has returned to the world stage.In order to continue the status of the Chinese women's volleyball team in the world,the active development of volleyball reserve talents has become a hot topic for scholars at home and abroad.With the continuous development of modern competitive sports,the cultivation and transmission of reserve talents should not be underestimated either.In order to ensure the abundant reserve force of Chinese women's volleyball team,the general administration of sport of China attaches great importance to the construction and cultivation of reserve talents of Chinese women's volleyball team.The second youth games to be held in taiyuan in Shanxi Province on August 8,the country provinces,city of outstanding high level athletes,women's volleyball project is divided into sports school(under-17)and club group(leave),participation and leave the volleyball players through layer upon layer selection,competitive level professional leagues on behalf of all the provinces and cities,traditional project school,but also a certain degree on behalf of the Chinese women's volleyball reserve force of the main competitive strength.Therefore,in the 2nd youth games women's volleyball club(leave)before the age of eight teams in the game and administering the tactics for the defence of the use effect as the research object,USES the literature material law,the technical statistics,mathematical statistics method,video analysis of qing yun will club group(leave)in administering and defence of the women's volleyball technology and tactics system of each link is analyzed,the results are as follows:(1)from the perspective of non-technical indicators,there is no significant difference in age,height,weight and cleto indicators among the athletes participating in this competition;From the height of the block and the height of the spike,the first group team occupies a certain advantage,mainly in the net for obvious strength.(2)in the first serving and passing link,the performance of the first group's passing rate and error rate are better than that of the second group;In the form of service,the utilization rate of the overhand floater on the front was higher than that of the floater and the big jump service,the scoring rate of the first group was the same as that of the second group,and the service error rate of the second group was higher than that of the first group.(3)in the counter attack,the strength of the first group's strong attack is outstanding,the spike line changes more than that of the second group,and the scoring rate is higher than that of the second group;Block the use of double block the most times,the first group block scoring rate and block efficiency is higher than the second group;The first group defense to the position rate and efficiency is also higher than the second group.(4)in the second group,the first group has better organizational and tactical ability,passing stability and attacking hand cooperation than the second group;The second group setter is more decisive than the first group,and the error rate is higher than the first group setter.(5)in the tactical application,the success rate of the tactical ball of the first group is higher than that of the second group.