Reliability of landing 3D motion analysis: Implications for longitudinal analyses
Reliability of landing 3D motion analysis: Implications for longitudinal analyses
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DOI：
10.1249/mss.0b013e318149332d
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发表时间：
2007-11-01
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影响因子：
--
通讯作者：
Hewett, Timothy E.
中科院分区：
文献类型：
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作者：
Ford, Kevin R.;Myer, Gregory D.;Hewett, Timothy E.
目的：在动态任务中量化的生物力学措施，结合纵向实验设计中的流行病学数据，可能有助于确定年轻运动员受伤风险的机制。一个关键组成部分是能够可靠地测量测试会话之间的生物力学变量。目的是确定三维（3D）下肢运动学和动力学变量的可靠性，在降落在一个会议内测量的年轻运动员和两个会议之间的7周。方法：下肢动力学和运动学定量下降垂直跳。多重相关系数（CMC），组内相关系数（ICC（3，k），ICC（3，1））和典型误差（TE）分析被用来检查会话内和会话间的可靠性。结果如下：在所有离散变量组合的平面之间，峰值角旋转的会话内可靠性没有差异（矢状ICC >= 0.933，额状ICC >= 0.955，横向ICC >= 0.934）。同样，三个运动平面之间的运动学测量的会话间可靠性没有差异，但低于会话内ICC。对于所有矢状面（ICC内>= 0.925，ICC之间>= 0.800）和额状面力矩测量（ICC内>= 0.778，ICC之间>= 0.748），离散关节力矩变量的会话内和会话间可靠性均极佳。CMC分析显示，会话内（CMC = 0.830 +/- 0.119）和会话间（CMC = 0.823 +/- 0.124）波形比较的平均值相似。结论：青少年运动员落地过程中的运动学和动力学变量大部分具有优良到良好的信度。可靠地量化下肢生物力学变量的年轻运动员在动态任务在延长的时间间隔可能有助于识别潜在的机制与损伤的危险因素。
Purpose: Biomechanical measures quantified during dynamic tasks with coupled epidemiological data in longitudinal experimental designs may be useful to determine which mechanisms underlie injury risk in young athletes. A key component is the ability to reliably measure biomechanical variables between testing sessions. The purpose was to determine the reliability of three-dimensional (3D) lower-extremity kinematic and kinetic variables during landing in young athletes measured within a session and between two sessions 7 wk apart. Methods: Lower-extremity kinetics and kinematics were quantified during a drop vertical jump. Coefficient of multiple correlations (CMC), intraclass correlation coefficients (ICC (3, k), ICC (3, 1)), and typical error (TE) analyses were used to examine within- and between-session reliability. Results: There were no differences in within-session reliability for peak angular rotations between planes with all discrete variables combined (sagittal ICC >= 0.933, frontal ICC >= 0.955, transverse ICC >= 0.934). Similarly, the between-session reliability of kinematic measures were not different between the three planes of motion but were lower than the within-session ICC. The within- and between-session reliability of discrete joint moment variables were excellent for all sagittal (within ICC >= 0.925, between ICC >= 0.800) and frontal plane moment measures (within ICC >= 0.778, between ICC >= 0.748). CMC analysis revealed similar averaged within-session (CMC = 0.830 +/- 0.119) and between-session (CMC = 0.823 +/- 0.124) waveform comparisons. Conclusion: The majority of the kinematic and kinetic variables in young athletes during landing have excellent to good reliability. The ability to reliably quantify lower-extremity biomechanical variables of young athletes during dynamic tasks over extended intervals may aid in identifying potential mechanisms related to injury risk factors.