Research On The Effectiveness Of The Players Of The 2nd National Sports College Basketball League

Research purposes:In the process of development of modern basketball,basketball player individual ability and the team cooperation level decision team overall competitive level of high and low,and the ability to stronger some players even directly decides the outcome of the game.Basketball player utility research can intuitively reflect the athletes competitive ability in the process of the game,and to evaluate comprehensively and objectively players as a whole,the member's technical skills and has a guiding significance to resolve the problem.Research method: This article takes the participation of 36 registered players in the 18 th SCBA 18 teams and 75 non-registered players(players in the team who have been playing in the team for a long time)as research subjects,through comparative analysis,literature data,and video observation.Laws,expert interviews,mathematical statistics(independent sample T-test,paired sample T-test,comparative mean,factor analysis),from a variety of perspectives,multi-dimensional comparative analysis of registered players and non-registered players in the game of utility data,The offensive and defensive capabilities of registered players and non-registered players,the players' body shape indicators,and offensive technical indicators between players in different positions such as score,shooting percentage,assists,offensive rebounds,errors,and other defensive technical indicators among players in different positions.Statistics such as steals,blocked shots,fouls,and backboard rebounds were analyzed.The players' efficiency values and win contribution values were analyzed.Through the expert interview method,the weighted proportions were used to derive the correlation coefficients and the player utility values were obtained.Analyze the gap between registered players and non-registered players.Research result:(1)The average height of registered players is 196.29 cm,and the average height of unregistered players is 189.53cm(P<0.01).The average weight of registered players was 90.34 kg,and the average weight of non-registered players was 86.08 kg.P=0.058>0.05 was not significant.(2)The registered player's average efficiency is 11.1,and the unregistered player's average efficiency is 9.1.The difference is 2.The average offensive efficiency of non-registered players is 6.12,and the registered player's average offensive efficiency is 7.2.The defensive efficiency value is 4.509,the registered player's defensive efficiency value is 5.629,P = 0.02 < 0.05,the difference is significant.(3)The average contribution of 3 unregistered players per game is 0.2111,and the registered player's average win contribution is 0.2547,P=0.224 > 0.05,and the difference is not significant.(4)The average utility value of registered players is 6.49,and the average utility value of unregistered players is 4.65,P=0.006<0.01 The difference is extremely significant.Analysis conclusion:(1)Registered players overall dominated in height,weight and Quetelet index,especially the average height of registered players is higher than that of non-registered players.The difference is extremely significant.Registered players are generally higher in height,more capable of confrontation and have higher physical conditions.(2)The overall averaged efficiency of non-registered players is lower than the averaged efficiency of registered players.Unregistered players have the largest gap between small forwards,registered players have higher offensive efficiency,registered players have stronger scoring ability,and scores yield high.Registered players have lower defensive efficiency and registered players are slow to defend and lack aggressive defense.(3)The registered player's average win contribution value is higher than the non-registered player's average win contribution value.The non-registered player(power forward)has a higher average win contribution value than the registered player(power forward),and the remaining positions are lower than the registered players.The registered player's average offensive win contribution value is higher than the non-registered player's average field win contribution value.The registered player's average defense defensive win contribution value is higher than the non-registered player's per game defensive victory contribution value.Registered players can control the rhythm of the game very well,tandem teams while ensuring individual offense,and provide greater help for the team to win on both ends of the offense and defense.(4)The average utility value of registered players is higher than the average utility value of non-registered players,The utility value of each registered player is higher than that of non-registered players.Registered players are highly efficient and help the team win more.