Validity and test-retest reliability of the Stride Analyzer in people with knee osteoarthritis |
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| Affiliation: | 1. Rehabilitation Sciences Research Department, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium;2. Frailty in Ageing Research Department, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium;3. Center of Movement analysis, Rehabilitation Hospital Inkendaal, 1602 Vlezenbeek, Belgium;4. Knowledge center Brussel Integrated Care, Erasmus University College, Laarbeeklaan 121, B-1090 Brussels, Belgium;1. Department of Laboratory Medicine, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, 225 Changhai Road, Shanghai 200438, PR China;2. Department of Laboratory Medicine, Changzheng Hospital, Second Military Medical University, 415 Fengyang Road, Shanghai 200003, PR China;1. Centro Interamericano de Recursos del Agua (CIRA), Universidad Autónoma del Estado de México (UAEM), Apdo postal 367, Toluca C.P. 50091, Mexico;2. Instituto Nacional de Investigaciones Nucleares (ININ), México, Departamento de Química, La Marquesa Ocoyoacac, Mexico;1. OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Germany;2. Department of Radiation Oncology, Division of Medical Radiation Physics, Comprehensive Cancer Center, Medical University Vienna, Austria;3. Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Vienna, Austria;4. Center for Medical Physics and Biomedical Engineering, Medical University Vienna, Austria;5. Institute of Radiation Oncology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany;6. Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany |
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| Abstract: | IntroductionSubjects with knee osteoarthritis walk differently compared to healthy subjects. Managing these gait alterations has been proven effective for reducing pain and increasing function. The Stride Analyzer is a low cost gait analysis tool but its clinimetric properties have not been investigated yet in subjects with symptomatic knee osteoarthritis. The aim of this study was to investigate the reliability and validity of the SA compared with the Gold standard (Vicon) in persons with knee OA.MethodsFifteen subjects with symptomatic knee osteoarthritis were instructed to walk at a self-selected speed in a gait laboratory. Temporospatial (TS) gait parameters were recorded simultaneously by the Stride Analyzer and by a 16-camera-infrared optoelectronic motion capturing system (Vicon). Validity and test-retest reliability of the Stride Analyzer were examined by Bland-Altman plots, intra-class correlation coefficients (ICC) and the standard error of measurement (SEM).ResultsTest-retest analyses showed good agreement for all TS parameters with ICC values ranging from 0.805 (single limb support right) to 0.949 (velocity) and SEM% values ranging from 0.78% (stance phase right (% of gait cycle)) to 4.52% (double limb support right (% of gait cycle)). Good agreement between Stride Analyzer and Vicon was found for the following TS parameters: velocity (z = 1.01), cadence (z = −0.85), stride length (z = 1.63) and gait cycle (z = 0.86). All other gait parameters showed lower ICC values (<0.689).InterpretationOur results suggest that the Stride Analyzer can be used in the clinical field to perform gait analysis in subjects with symptomatic knee osteoarthritis. |
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| Keywords: | Gait analysis Validity Reliability |
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