Lyu Mengde, Chen Zhili, Deng Shengji, Ding Ling, Han Jia, Bishop Chris, Li Yongming
School of Athletic Performance, Shanghai University of Sport, Shanghai, China.
School of Human Sciences (Exercise and Sport Science), University of Western Australia, Perth, Australia.
J Hum Kinet. 2025 Apr 30;96(Spec Issue):109-119. doi: 10.5114/jhk/196315. eCollection 2025 Feb.
The aims of this study were to: 1) assess and compare the performance of lateral shuffles and lower limb jumps among pre-juvenile basketball players; and 2) calculate the asymmetry scores of these assessment methods and examine the association between their performance and existing inter-limb differences. Thirty-nine pre-juvenile basketball athletes (23 boys and 16 girls) performed the countermovement jump, the single leg countermovement jump, the single leg lateral jump, the single leg broad jump, and four shuffle tests (2 distances of 2.5 and 5 m × 2 in each direction) on separate days. Results revealed significant differences between the left and the right shuffle at distances of both 2.5 m (p < 0.05) and 5 m (p < 0.01), with inter-limb asymmetry scores ranging from 3.3 to 5.1%. There was no significant difference between the performance of the left and right legs in each single leg jump test, while the inter-limb asymmetry values ranged from 5.3 to 8.6%. Correlation analysis showed there were no correlations among the inter-limb asymmetry, shuffle asymmetry and performance, while the right single leg countermovement jump performance was significantly correlated with shuffle performance (all p < 0.001). Shuffle performance in different directions exhibited significant differences which were unrelated to inter-limb asymmetry, demonstrating the task-specific nature of asymmetry and natural variability seen in lateral movements of pre-juvenile basketball players. Practitioners are advised to use a diversified approach to assess asymmetry. These findings have implications for injury prevention and performance enhancement.
1）评估并比较青少年前期篮球运动员的侧向移动和下肢跳跃能力；2）计算这些评估方法的不对称分数，并检验其表现与现有肢体间差异之间的关联。39名青少年前期篮球运动员（23名男孩和16名女孩）在不同日期进行了反向纵跳、单腿反向纵跳、单腿侧向跳跃、单腿跳远以及四项侧向移动测试（两个距离，每个方向各2.5米和5米）。结果显示，在2.5米（p < 0.05）和5米（p < 0.01）距离处，左右侧向移动之间存在显著差异，肢体间不对称分数在3.3%至5.1%之间。在每项单腿跳跃测试中，左右腿的表现没有显著差异，而肢体间不对称值在5.3%至8.6%之间。相关性分析表明，肢体间不对称、侧向移动不对称与表现之间没有相关性，而右侧单腿反向纵跳表现与侧向移动表现显著相关（所有p < 0.001）。不同方向的侧向移动表现存在显著差异，且与肢体间不对称无关，这表明青少年前期篮球运动员侧向移动中不对称的任务特异性本质和自然变异性。建议从业者采用多样化方法评估不对称性。这些发现对预防损伤和提高表现具有启示意义。
