侧向跳落测试：前交叉韧带重建运动员重返运动时一种带有双任务的新型动态姿势控制测试
简介
该研究评估了新型双重任务侧向跳落测试（LJLT）在ACLR运动员重返运动时的信度，通过二维视频分析记录支撑策略改变错误数。结果显示，除双重任务下非手术侧重测信度较低外，重测信度均为中至优，评定者间信度极佳；双重任务比单一任务更挑战动态姿势控制，而肢体间差异大多不显著。LJLT可为ACLR重返运动评估提供可靠的新工具，尤其推荐引入双重任务条件。
英文摘要
OBJECTIVE: To evaluate the reliability of the Lateral Jump Landing Test (LJLT), a novel dynamic postural control test incorporating a dual-task component, in athletes with anterior cruciate ligament reconstruction (ACLR) at return to sport (RTS). DESIGN: Cross-sectional reliability study. SETTING: University hospital laboratory. PARTICIPANTS: Athletes with ACLR at RTS. METHODS: Dynamic postural control was assessed by counting Change-in-Support Strategy (CSS) errors using two-dimensional video analysis. Test-retest reliability was evaluated using ICC and standard errors of measurement (SEM), and interrater reliability using ICCs and Cohen's kappa coefficients. Between-leg and between-task differences were analysed using paired-samples t-tests (p < .05). RESULTS: For test-retest reliability, ICCs were ≥.70, except for non-operated leg during the dual task (ICC = .49), with SEMs ranging from 1.7 to 2.7 errors. For the interrater reliability, ICCs were >.90 and kappa coefficients ranged from .50 to 1.0. CSS scores were significantly higher during the dual-task than the single-task condition, except for the operated leg at retest. Between-leg differences were nonsignificant, except during the dual task at retest. CONCLUSIONS: The LJLT demonstrated moderate-to-good test-retest reliability across most conditions and excellent interrater reliability. The dual-task condition challenged dynamic postural control, while performance was largely comparable between operated and non-operated limbs.