| The development level of volleyball competition reflects the development level of volleyball.With the natural advantage of physical quality,the competition intensity of men’s volleyball is often greater than that of women’s volleyball,and the development degree is often faster than that of women’s volleyball,showing the trend of men’s volleyball to develop in an all-round way and women’s volleyball to men’s volleyball.Men’s volleyball has diversified hair pads,faster passing,stronger smashing and higher blocking;the ball speed is faster and faster,the strength is bigger and higher,and the blocking is higher and higher;the whole game’s score is mainly concentrated in the "one attack" link.The strength of "one attack" has become an important reference factor to measure the competitive strength of men’s volleyball.Chinese men’s volleyball team was coached by Raul in 2018 and 2019,which is the first time that Chinese men’s volleyball team hired foreign coaches to participate in two world men’s volleyball leagues with a total of 30 matches.Based on these 30 matches and the official videos of 30 matches in Japan and Iran in 2019,this paper analyzes the "one attack" effect of Chinese men’s volleyball team,Japan and Iran.In the process of statistics,in order to ensure the authenticity and effectiveness of the statistical data,experts were consulted to make statistical tables,and the data were counted according to the requirements of experts in the form of normal speed playback,slow playback,freeze frame playback and repeated viewing.This paper makes a detailed technical statistics on the receiving service,the second pass distribution and the smashing effect of all the players of three teams in each game,and makes an in-depth analysis on the key ball in the key game.The research methods adopted in this paper are mainly documentary method,mathematical statistics method,logical analysis method,expert interview method,video observation method and other five research methods.The results show that:1.In terms of non-technical indicators:The non-technical indicators include height,weight,spike height,blocking height,age,Clito index and so on.Compared with Japanese men’s volleyball,Chinese men’s volleyball team is relatively superior to Japanese men’s volleyball team in four aspects except for the average age.Compared with the Iranian men’s volleyball team,the Chinese men’s volleyball team has an advantage in average height,average spike height and average blocking height.However,the Chinese men’s volleyball team is slightly lighter in weight,resulting in a lower Clito index.The age of Chinese men’s volleyball team is younger than the other two teams,with the advantage of youth.2 in the first pass:The first pass rate of Iranian men’s volleyball team is the highest,followed by Japanese men’s volleyball team and Chinese men’s volleyball team.China’s men’s volleyball team is responsible for the main free men and the main attack,and there is a gap with Japan’s men’s volleyball team and Iran’s men’s volleyball team.Among them,No.17 of Chinese men’s volleyball team,No.5 of Japan’s team and No.7 of Iran’s team are relatively stable players.The first three rounds with the highest transfer rate of Chinese men’s volleyball are: the third round,the first round and the second round;the fourth round,the sixth round and the first round with the highest transfer rate of Iranian men’s volleyball;the first three rounds with the highest transfer rate of Japanese men’s Volleyball are: the first round,the second round and the fifth round.3.In the second pass distribution:The main second pass of the Chinese team is No.9,and the top three distribution ball frequencies are No.4,No.3 and No.2.Compared with 2018,the proportion of No.3 is more than that of No.2,indicating that when the first pass is in place,the organization of the middle fast ball is more.The main second pass of Iran team is No.4,and the first three positions of the ball are No.4,No.2 and No.3.The second pass makes full use of the net length to open the attack,and the ball frequency distribution is relatively uniform.Japan’s second pass is No.12,and the ratio of allocated balls is No.4,No.2,and the last two,there are relatively more balls to receive.The proportion of air block and double block caused by Chinese men’s volleyball team is lower than that of Japanese men’s volleyball team and Iranian men’s volleyball team,and that of single block and three block is higher than that of Japanese men’s volleyball team and Iranian men’s volleyball team.4.In terms of smashing by attackers:From high to low,the three teams’ active scoring ability(penalty and player out of the field)ranked in order: Iran,Japan,China,and from high to low,the three teams’ active scoring ability(penalty and blocked)ranked in order: China,Japan,Iran.In 2019,compared with 2018,the Chinese team’s ability to score actively decreased,and its ability to control its own mistakes increased.The success rate of receiving spike is higher than that of Iran,China and Japan,and the success rate of main attack spike is higher than that of Iran,Japan and China.There is a significant gap(3.5%)between Chinese men’s volleyball team and them.The second place is Iran,Japan and China.There is no obvious difference between them(3.5% is the dividing point).In 2019,compared with2018,the success rate of the three positions of the Chinese team’s attacker and spike dropped.The scoring rate of the three teams reached the highest in the first round.China is almost equal to Japan in terms of strength in the round of strong attack,and there is a big gap with Iran.The highest scoring rate of the Chinese team is in the fourth round,Iran is in the fourth round,and Japan is in the first round.The ability of the Chinese team to organize the Tactical Attack in the round of best tactical attack is the same as that of Iran and Japan There was a gap.5.Put forward corresponding suggestions for four aspects:The advantage of Chinese men’s volleyball team in the net is obvious,trying to change the high advantage into the scoring advantage;at the same time,mining and retaining the old players with better competitive status in the Chinese League,can be the spiritual support of Chinese men’s volleyball team when the key ball is in the key competition.The Chinese men’s volleyball team should strengthen the training of the basic skills of the first pass to solve the current main problems;study the distribution of the service points of the opponent in the match with the Chinese team,and divide the position distribution of each player when receiving different service types,so as to improve the stability of the first pass in each round.Encourage the second pass to organize the Tactical Attack for the secondary attack when the first pass is half in place;increase the attention of the other side to the secondary attack,and reduce the pressure for the main attack and the high point attack.When the first pass is in place,the ball allocated to the main attack,the secondary attack and the catch can be relatively uniform,reducing the attention to individual players.The main attack and response of Chinese men’s volleyball team not only improve the ability of the main score of spike,but also reserve the ability of self-control errors,try to reduce their own errors,sometimes it is equal to score if no score is given.The second attack of Chinese men’s volleyball team not only keeps the scoring rate of spike,but also enhances the judgment consciousness of blocking.In the competition,do not run ahead of time,improve the speed and integrity of blocking,and reduce the probability of direct scoring of the other team’s first attack. |
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