Test-retest reliability of entire time-series data from hip, knee and ankle kinematics and kinetics during one-leg hops for distance: Analyses using integrated pointwise indices

JOURNAL OF BIOMECHANICS

卷:124

Article

Schelin, Lina¹  Pini, Alessia²  Markstrom, Jonas L.³  Hager, Charlotte K.³ 

[1] Umea Univ, Umea Sch Business, Dept Stat, Samhallsvetarhuset, S-90187 Umea, Sweden

[2] Univ Cattolica Sacro Cuore, Dept Stat Sci, Milan, Italy

[3] Umea Univ, Dept Community Med & Rehabil, Physiotherapy, Umea, Sweden

关键词: Biomechanics;    Hop testing;    Landing;    Functional data;    Motion analysis;    Knee injury rehabilitation;   

DOI  :  10.1016/j.jbiomech.2021.110546

来源: Elsevier

【 摘 要 】

Motion capture systems enable in-depth interpretations of human movements based on data from threedimensional joint angles and moments. Such analyses carry important bearings for evaluation of movement control during for instance hop landings among sports-active individuals from a performance perspective but also in rehabilitation. Recent statistical development allows analysis of entire time-series of angle and moment during hops using functional data analysis, but the reliability of such multifaceted data is not established. We used integrated pointwise indices (intra-class correlation, ICC; standard error of measurement, SEM) to establish the test-retest reliability of three-dimensional hip, knee and ankle angle and moment curves during landings of oneleg hop for distance (OLHD) in 23 asymptomatic individuals aged 18-28. We contrasted these findings to reliability of discrete variables extracted at specific events (initial contact, peak value). We extended the calculations of ICC and SEM to handle unbalanced situations (varying number of repetitions) to include all available data. Hip and knee angle curves proved reliable with stable ICC curves throughout the landing, with integrated ICCs >= 0.71 for all planes except for knee internal/external rotation (ICC = 0.57). Hip and knee moment curves and ankle angle and moments were less reliable and less stable, particularly in the first similar to 10-25% of the landing (integrated ICCs 0.44-0.57). Curve data were generally not in agreement with the results for discrete event data, thus advocating analysis of curve data which contains more information. To conclude, hip and knee angle curve data during OLHD landings can reliably be evaluated, while moment curves necessitate careful consideration.

【 授权许可】

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