Basketball shooting is one of the most important offensive skills in basketball. Winning or losing a game mostly depends on the shooting effectiveness. The study aims to compare the selected kinematic variables of 2-point (2-pt) and 3-point (3-pt) jump shots (after making a cut and receiving the ball) and ascertain the differences between elite male under 16 and 18 (U16M, U18M) and female under 16 and 18 (U16F, U18F) basketball players. Overall, forty-eight young male and female basketball players participated in the study. 3D motion analysis using an inertial suit with the addition of utilizing a smart ball was performed for assessing the 2-pt and 3-pt shooting techniques. Players in male categories shot for 2-pt with a higher center of mass difference in the vertical direction (U16M 5.7 cm, U18M 3.9 cm vs. U16F 1.4 cm, U18F 0.6 cm), with higher release shoulder angle (U16M 110.9, U18M 113.8 vs. U16F 103, U18F 105), and with a higher entry angle of the ball (U16M 34, U18M 32 vs. U16F 30, U18F 30) when compared to female categories (p < 0.001). In the 3-pt shooting, there were differences between male and female categories in the shoulder angle when releasing the ball (p < 0.001). In the players shooting speed, there were differences between U16M vs. U18F (0.95 ± 0.1 vs. 0.88 ± 0.1; p = 0.03) and U16F vs. U18F (0.96 ± 0.06 vs. 0.88 ± 0.1; p = 0.02) players. Male categories shot 3-pt shots with a smaller center of mass difference in the horizontal direction when compared to 2-pt shots (p < 0.001). The entry angle was higher in successful shooting attempts compared to unsuccessful shooting attempts when shooting for 3-pt (p = 0.02). Player shooting speed was higher in all categories (except U18F) when shooting for 3-pt (p < 0.001). It appears that performers show difference in kinematic variables based on distance from the basket. Basketball coaches and players should work to minimize the kinematic differences between 2-pt and 3-pt shooting and to optimize the shooting technique.

中文翻译：

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优秀青年男子和女子篮球运动员2分和3分跳投的运动学分析。

篮球投篮是篮球最重要的进攻技能之一。一场比赛的成败主要取决于射击效率。这项研究旨在比较2点（2-pt）和3点（3pt）跳投（在切入并接球后）的选定运动学变量，并确定16岁和18岁以下精英男子之间的差异（U16M，U18M）和16岁以下和18岁以下的女性（U16F，U18F）篮球运动员。总体而言，共有48位年轻的男女篮球运动员参加了这项研究。进行了使用惯性服的3D运动分析以及使用智能球的评估，以评估2点和3点射击技术。男性类别的球员在垂直方向上质点中心较高的情况下进行了2分投篮（U16M 5.7厘米，U18M 3.9厘米和U16F 1.4厘米，U18F 0.6厘米），p <0.001）。在三分球投篮中，释放球时，男性和女性类别的肩膀角存在差异（p <0.001）。在球员射击速度上，U16M与U18F（0.95±0.1与0.88±0.1；p = 0.03）和U16F与U18F（0.96±0.06与0.88±0.1；p = 0.02）球员之间存在差异。与2点射击相比，男性类别的3点射击在水平方向上的质心中心更小（p <0.001）。在进行3点拍摄时，成功拍摄尝试的入射角要比不成功拍摄尝试的入射角高（p = 0.02）。进行3点射击时，所有类别（U18F除外）的球员射击速度都更高（p <0.001）。看来表演者会根据与篮筐的距离表现出运动学变量的差异。篮球教练和球员应该努力减少2分和3分投篮之间的运动学差异，并优化投篮技巧。