| With the development of basketball,concept of position became vague,for example,members of a team can be all five short players,though there is no center,one player in these five short players will play as a center and employ its techniques.This paper studies the techiniques of the centers during the 25thh Olympics to the 31st Olympics by means of literature review,questionair survey,video observation,mathematical statistics and logic analysis to explore the technique transformation of center.And the results are:1.During the 25thh Olympics to the 31st Olympics,the center of the men’s basketball team is dominated by in-situ slashing skills in the ball-less offensive technology.There is no significant change in the total number of in-situ slashing skills in the 7th National Games,accounting for a year-on-year reduction in the proportion of previous years.The trend is increasing,and the proportion of calendar years has increased year by year.The no-ball cut-in technique was mainly based on the cut of the arc top,and the two wings were supplemented with the same side incision.The incisions of the two wings and the cut of the top of the arc showed an increasing trend.There were some fluctuations in the same side,and the overall trend was stable.2.During the 25thh Olympics to the 31st Olympics,the center of basketball has the largest number of in-situ shots in the offensive game,accounting for a year-on-year decrease.The percentage of shots and jumpers in the running shows a trend of increasing year-on-year,and the overall trend of tipping is stable.In the shooting area,the center is selected to take the near field shot as the leading factor,the central area shots show a steady upward trend,and the far field shooting has had an explosive growth trend since 2012.The total number of hook shots and drop shots in the low-level offensive shooting technique is overwhelming,and the change in the total proportion is not obvious.Breakthroughs are dominated by ball-breaking,and dribble breakthroughs show a year-on-year growth trend.In the breakthrough position,the two wings and the top of the arc are the main choices,and the bottom corner is less preferred.The total number of passes showed an increasing trend,and the chest pass was the largest base pass,accounting for a stable trend in proportion.There was a certain ups and downs in the passing of the head and hitting the ground,and the overall trend was stable.The total number of hand-handed passing passes is increasing,and the proportion is increasing year by year.3.During the 25thh Olympics to the 31st Olympics,the number of defense centers of men’s basketball players in the defensive ball-less technique has not changed significantly,and their proportion has decreased year by year.The percentage of defensive numbers before and around the game has increased year by year.4.During the 25thh Olympics to the 31st Olympics,the center of the center of the basketball team in the anti-ball technology is dominated by strong and weak interference.In the far area,weak and no interference are the main factors.The number of defenses is more,and the number of side top defenses is less.The defense against breakouts is dominated by flat-step defenses,and center forwards use diagonal defense more when moving forward and backward in defense.The defensive interference intensity shows an increasing trend.5.Throughout the 7th men’s basketball center,rebounding is dominated by in situ rebounding.No significant change in the total number of rebounds has been reduced year by year.The proportion of rebounding and rebounding rebounds is increasing year by year. |