Show simple item record

dc.contributor.authorRobbins, Shawn
dc.contributor.authorAstephen-Wilson, Janie
dc.contributor.authorRutherford, Derek
dc.contributor.authorHubley-Kozey, Cheryl
dc.date.accessioned2016-05-31T15:31:11Z
dc.date.available2016-05-31T15:31:11Z
dc.date.issued2013
dc.identifier.citationRobbins, S. M., Wilson, J. L. A., Rutherford, D. J., & Hubley-Kozey, C. L. (2013). Reliability of principal components and discrete parameters of knee angle and moment gait waveforms in individuals with moderate knee osteoarthritis. Gait & posture, 38(3), 421-427.en_US
dc.identifier.urihttp://hdl.handle.net/10222/71742
dc.identifier.urihttp://dx.doi.org/10.1016/j.gaitpost.2013.01.001
dc.descriptionThe authors thank Gillian Hatfield and Nick Hill for assistance with data collection and processing. Dr. William Stanish assisted with study recruitment and radiographic scoring.
dc.description.abstractGait measures are used to evaluate change in patients with knee osteoarthritis (OA), but reliability has not been fully established in this population. This study examined test-retest reliability of knee angle and moment gait waveform characteristics captured using discrete parameters and principal component analysis (PCA) in individuals with moderate knee OA. Participants (n = 20) underwent three-dimensional gait analysis on two occasions. Motion and force data were captured using two camera banks, infrared light emitting diodes and force plate during self-selected walking. Knee angle and moment waveforms were calculated and analyzed using discrete parameters and by identifying waveform characteristics using PCA. Intraclass correlation coefficients (ICC2,k) examined test-retest reliability of discrete parameters and PCA derived scores (PC-scores). ICC2,k values ranged from 0.57 to 0.93 for discrete parameters, 0.52–0.86 for knee angle PC-scores and 0.30–0.94 for the knee moment PC-scores. However, 10 of 13 discrete parameters, six of nine knee angle PC-scores and seven of nine knee moment PC-scores had ICC2,k values greater than or equal to 0.70. Discrete parameters and PC-scores from flexion angles and adduction moments had the highest ICC2,k values while adduction angles, rotation angles, and rotation moments had the lowest. Most knee angle and moment waveform characteristics demonstrated ICC2,k values that could be interpreted as acceptable. Caution should be used when examining adduction and rotation angle magnitudes and early/mid-stance rotation moment magnitudes due to lower ICC2,k values.en_US
dc.description.sponsorshipCanadian Institutes of Health Research (CIHR) and the Nova Scotia Health Research Foundation (NSHRF).
dc.publisherElsevieren_US
dc.relation.ispartofGait & Postureen_US
dc.subjectKnee osteoarthritisen_US
dc.subjectGait
dc.subjectBiomechanics
dc.subjectReliability
dc.subjectPrincipal component analysis
dc.titleReliability of Principal Components and Discrete Parameters of Knee Angle and Moment Gait Waveforms in Individuals with Moderate Knee Osteoarthritisen_US
dc.typeArticleen_US
 Find Full text

Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record