Addressing limitations of the Gait Variability Index to enhance its applicability: The enhanced GVI (EGVI).

ABSTRACT: Prior research has established the Gait Variability Index (GVI) as a composite measure of gait variability, based on spatiotemporal parameters, that is associated with functional outcomes. However, under certain circumstances the magnitude and directional specificity of the GVI is adversely affected by shortcomings in the calculation method. Here we present an enhanced gait variability index (EGVI) that addresses those shortcomings and improves the utility of the measure. The EGVI was further enhanced by removing some input spatiotemporal variables that captured overlapping/redundant information. The EGVI was used to reanalyze data from four previously published studies that used the original GVI. After removing data affected by the GVI's prior shortcomings, the association between EGVI an

SUBMITTER: Gouelle A 

PROVIDER: S-EPMC5983480 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature