Test-retest reliability and minimal detectable change of three-dimensional gait analysis in chronic low back pain patients

Gait & Posture
Rita FernandesAntónio P Veloso

Abstract

Three-dimensional gait analysis (3DGA) can provide detailed data on gait impairment in chronic low back pain (CLBP) patients. However, data about reliability and measurement error of 3DGA in this population is lacking. The aim of this study is to investigate test-retest reliability and minimal detectable change of 3DGA in a sample of CLBP patients. A test-retest study was conducted with a sample of 14 CLBP patients that underwent two biomechanical gait assessments with an interval of 7.6 ± 1.8 days. Anthropometric and time-distance parameters, as well as peak values for lower limb and trunk joint angles and moments, were computed. Intraclass Correlation Coefficient (ICC3,k) and their 95% confidence intervals were calculated. Standard error of measurement (SEM), minimal detectable change (MDC) and limits of agreement (LOA) were also estimated. The obtained ICC values demonstrate high test-retest reliability for most joint angles, with low SEM (< 2.5°) values. Although joint moments showed lower reliability than joint angles, the majority of the ICCs were above 0.7 and the SEM and MDC values were low (≤ 0.06 Nm/kg and ≤ 0.18 Nm/kg). Bland-Altman plots with 95% LOA revealed a good agreement and time-distance parameters were all hi...Continue Reading

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Citations

Oct 31, 2018·Work : a Journal of Prevention, Assessment, and Rehabilitation·Zhongming YuSuzanne J Snodgrass
Feb 15, 2019·PloS One·Gergely Nagymáté, Rita M Kiss
Sep 14, 2017·Journal of Rehabilitation and Assistive Technologies Engineering·Pia WedegeArve Isak Opheim

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