TY - JOUR
T1 - Reliability of 3-dimensional measures of single-leg drop landing across 3 institutions
T2 - Implications for multicenter research for secondary ACL-injury prevention
AU - Myer, Gregory D.
AU - Bates, Nathaniel A.
AU - DiCesare, Christopher A.
AU - Barber Foss, Kim D.
AU - Thomas, Staci M.
AU - Wordeman, Samuel C.
AU - Sugimoto, Dai
AU - Roewer, Benjamin D.
AU - McKeon, Jennifer M.Medina
AU - Di Stasi, Stephanie L.
AU - Noehren, Brian W.
AU - McNally, Michael
AU - Ford, Kevin R.
AU - Kiefer, Adam W.
AU - Hewett, Timothy E.
PY - 2015
Y1 - 2015
N2 - Context: Due to the limitations of single-center studies in achieving appropriate sampling with relatively rare disorders, multicenter collaborations have been proposed to achieve desired sampling levels. However, documented reliability of biomechanical data is necessary for multicenter injury-prevention studies and is currently unavailable. Objective: To measure the reliability of 3-dimensional (3D) biomechanical waveforms from kinetic and kinematic variables during a single-leg landing (SLL) performed at 3 separate testing facilities. Design: Multicenter reliability study. Setting: 3 laboratories. Patients: 25 female junior varsity and varsity high school volleyball players who visited each facility over a 1-mo period. Intervention: Subjects were instrumented with 43 reflective markers to record 3D motion as they performed SLLs. During the SLL the athlete balanced on 1 leg, dropped down off of a 31-cm-high box, and landed on the same leg. Kinematic and kinetic data from both legs were processed from 2 trials across the 3 laboratories. Main Outcome Measures: Coefficients of multiple correlations (CMC) were used to statistically compare each joint angle and moment waveform for the first 500 ms of landing. Results: Average CMC for lower-extremity sagittal-plane motion was excellent between laboratories (hip .98, knee .95, ankle .99). Average CMC for lower-extremity frontalplane motion was also excellent between laboratories (hip .98, knee .80, ankle .93). Kinetic waveforms were repeatable in each plane of rotation (3-center mean CMC =.71), while knee sagittal-plane moments were the most consistent measure across sites (3-center mean CMC =.94). Conclusions: CMC waveform comparisons were similar relative to the joint measured to previously published reports of between-sessions reliability of sagittal- and frontal-plane biomechanics performed at a single institution. Continued research is needed to further standardize technology and methods to help ensure that highly reliable results can be achieved with multicenter biomechanical screening models.
AB - Context: Due to the limitations of single-center studies in achieving appropriate sampling with relatively rare disorders, multicenter collaborations have been proposed to achieve desired sampling levels. However, documented reliability of biomechanical data is necessary for multicenter injury-prevention studies and is currently unavailable. Objective: To measure the reliability of 3-dimensional (3D) biomechanical waveforms from kinetic and kinematic variables during a single-leg landing (SLL) performed at 3 separate testing facilities. Design: Multicenter reliability study. Setting: 3 laboratories. Patients: 25 female junior varsity and varsity high school volleyball players who visited each facility over a 1-mo period. Intervention: Subjects were instrumented with 43 reflective markers to record 3D motion as they performed SLLs. During the SLL the athlete balanced on 1 leg, dropped down off of a 31-cm-high box, and landed on the same leg. Kinematic and kinetic data from both legs were processed from 2 trials across the 3 laboratories. Main Outcome Measures: Coefficients of multiple correlations (CMC) were used to statistically compare each joint angle and moment waveform for the first 500 ms of landing. Results: Average CMC for lower-extremity sagittal-plane motion was excellent between laboratories (hip .98, knee .95, ankle .99). Average CMC for lower-extremity frontalplane motion was also excellent between laboratories (hip .98, knee .80, ankle .93). Kinetic waveforms were repeatable in each plane of rotation (3-center mean CMC =.71), while knee sagittal-plane moments were the most consistent measure across sites (3-center mean CMC =.94). Conclusions: CMC waveform comparisons were similar relative to the joint measured to previously published reports of between-sessions reliability of sagittal- and frontal-plane biomechanics performed at a single institution. Continued research is needed to further standardize technology and methods to help ensure that highly reliable results can be achieved with multicenter biomechanical screening models.
KW - ACL reinjury
KW - Biomechanics of rehabilitation
KW - Multi-institution research
KW - Screening for injury risk
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U2 - 10.1123/jsr.2014-0237
DO - 10.1123/jsr.2014-0237
M3 - Article
C2 - 25658173
AN - SCOPUS:84930246764
SN - 1056-6716
VL - 24
SP - 198
EP - 209
JO - Journal of Sport Rehabilitation
JF - Journal of Sport Rehabilitation
IS - 2
ER -