Faculty of Sport and Physical Education, University of Belgrade, Belgrade, Serbia.
J Strength Cond Res. 2012 Sep;26(9):2453-9. doi: 10.1519/JSC.0b013e31823f2b22.
The aims of this study were (a) to identify and compare the speed and agility of 12- and 14-year-old elite male basketball players and (b) to investigate relations between speed and agility for both age groups of basketball players, to help coaches to improve their work. Sixty-four players aged 12 (M = 11.98 years, SD = 0.311) and 54 players aged 14 (M = 14.092 years, SD = 0.275) were tested. Three agility tests: agility t-test, zigzag agility drill, and agility run 4 × 15 m and 3 speed tests: 20-m run, 30-m run, and 50-m run were applied. Fourteen-year-old players achieved significantly better results in all speed and agility tests compared with 12-year-old players. The correlation coefficient (r = 0.81, p = 0.001) showed that 12-year-old players have the same ability in the 30- and 50-m runs. The other correlation coefficient (r = 0.59, p = 0.001) indicated that 20- and 30-m runs had inherently different qualities. The correlation coefficients between agility tests were <0.71, and therefore, each test in this group represents a specific task. In 14-year-old players, the correlation coefficients between the speed test results were <0.71. In contrast, the correlation coefficients between the agility tests were >0.71, which means that all the 3 tests represent the same quality. During the speed training of 12-year-old players, it is advisable to focus on shorter running distances, up to 30 m. During the agility training of the same players, it is useful to apply exercises with various complexities. In speed training of the 14-year-old players, the 30- and 50-m runs should be applied, and agility training should include more specific basketball movements and activities.
(a) 识别和比较 12 岁和 14 岁的精英男性篮球运动员的速度和敏捷性，(b) 研究两个年龄组篮球运动员的速度和敏捷性之间的关系，以帮助教练提高工作效率。共有 64 名 12 岁的运动员（M=11.98 岁，SD=0.311）和 54 名 14 岁的运动员（M=14.092 岁，SD=0.275）接受了测试。应用了三种敏捷性测试：敏捷性测试、折线型敏捷性训练和 4×15m 敏捷性跑，三种速度测试：20m 跑、30m 跑和 50m 跑。与 12 岁的运动员相比，14 岁的运动员在所有速度和敏捷性测试中都取得了显著更好的成绩。相关系数（r=0.81，p=0.001）表明，12 岁的运动员在 30m 和 50m 跑中具有相同的能力。另一个相关系数（r=0.59，p=0.001）表明，20m 和 30m 跑具有不同的内在质量。敏捷性测试之间的相关系数<0.71，因此，该组中的每个测试都代表一个特定的任务。在 14 岁的运动员中，速度测试结果之间的相关系数<0.71。相比之下，敏捷性测试之间的相关系数>0.71，这意味着所有 3 个测试都代表相同的质量。在 12 岁运动员的速度训练中，建议集中在较短的跑步距离，不超过 30m。在同一运动员的敏捷性训练中，应用具有各种复杂性的练习是有用的。在 14 岁运动员的速度训练中，应应用 30m 和 50m 跑，而敏捷性训练应包括更具体的篮球动作和活动。
