摘要
通过三维高速摄像法和二维摄像法对篮球运动员的罚篮动作进行拍摄,运用Motion视频分析系统对受试者的罚篮随球动作进行解析,界定投球后发力侧上肢随球动作的不同类型,采用卡方检验的方法揭示其与投篮效果的关系,结合对专家的访谈,探讨投篮效果好的随球动作技术标准,为今后投篮教学与训练提供理论参考。研究结果:1)对上臂外展角度和对应投篮得分两个分类变量进行卡方检验,结果为:P=0.027<0.05,列联系数值为0.376;2)对肩关节屈角和相对应投篮得分两个分类变量进行卡方检验:P=0.000<0.01,列联系数为0.56;3)对大小臂夹角和相对应投篮得分两个分类变量进行卡方检验,结果P=0.172>0.05;4)对腕关节屈角和投篮得分两个分类变量进行卡方检验:P=0.027<0.05,列联系数值为0.329;5)对投球后手腕内收角和相对应投篮效果两个分类变量间进行卡方检验:P=0.012<0.05,列联系数值为0.337;6)对手型分类和相对应投篮得分两个分类变量进行卡方检验,结果 P=0.028<0.05,列联系数值为0.41。研究结论:投球后保持轻微的手臂外展,相对较大的肩关节屈角,较小的腕关节屈角,适度的手腕内收,较大的食、中指和无名指屈角,体现了上肢在投篮过程中合理的关节运动和用力特征,投篮效果较好。
Through using the method of three-dimensional high-speed camera and two-dimensional imaging,this paper makes shoot on basketball players＇ free throws,and analyzes the subjects＇ following movement of free throw using the motion video analysis system,defines the pitch side force of upper limb with different types of ball movement,and reveals the relationship and the effect of shooting by Chi square test method,investigates the effect of well shooting with the ball movement technical standards combined with interviews of experts,and provides the theoretical reference for future basketball teaching and training.The results shows that 1）To the upper arm abducent angles and the corresponding score two classification variables chi-square test,the result is：P=0.0270.05,column is 0.376;2）On shoulder joint flexion angle and the corresponding score two chi-square classification variables：P=0.000 0.01,column value is 0.01;3）On the angle of the forearm and corresponding scoring two classification variables chi-square test,the results P=0.1720.05;4）On the wrist flexion angle and scoring two classification variables chi-square test,P=0.0270.05,column value is 0.329;5）Within the wrist after pitching Angle and collect effect between two classification variables corresponding to the shooting chi-square test,P =0.012〉0.05,column value is0.337;6）Type classification and corresponding scoring two classification variables chi-square test,the results P=0.0280.05,column value is 0.41.Conclusions：After shooting to keep the motion of follow through,as light outreach of arm,a bigger shoulder flexion angle,a slight wrist flexion angle,aproper wrist joint adduction angle,with forefinger,middle finger and ring finger at a bigger finger flexion angle has a better effect of shooting.
出处
《中国体育科技》
CSSCI
北大核心
2016年第4期76-83,共8页
China Sport Science and Technology
基金
教育部新世纪优秀人才支持计划资助项目(教技函[2013]47号)
北京体育大学自主科研课题(2014YX002)
关键词
随球动作
手臂
手腕
手型
投篮命中率
follow movement of ball
arm
whist
finger
shooting percentage
