Spatiotemporal gait analysis provides quantitative information to assess treatment outcomes in stroke survivors: it can help prescribe a treatment, assess its outcome, detect motor recovery following physical therapy interventions, design appropriate gait training programs,…
On one hand, in current clinical practice, gait analysis typically consists of a subjective visual observation. On the other hand, 3D motion capture systems, considered as gold standard, suffer from being costly, bulky and time-consuming. Therefore, clinicians need portable, easy-to-use and low-cost devices, which accurately and reliably measure spatiotemporal gait parameters.
This study conducted by the Rehabilitation Research group of the Vrije Universiteit Brussel (VUB) team, examined the concurrent validity and reproducibility of Gait Up© gait analysis system based on 2 lightweight foot-worn inertial sensors (Physilog®) and three-dimensional motion capturing (Vicon) in subacute stroke survivors. 25 subacute stroke survivors participated in the walking tests (twice 5 times back and forth on a 12-m walkway) and their gait parameters were synchronously measured by both Gait Up© wearables & Vicon 3D marker-based systems.
Based on test-retest reliability and agreement data analysis, the study concludes that the Gait Up© system is a valid and reliable tool to measure paretic and nonparetic gait cycle time, cadence, stride length and stride velocity in subacute patients with stroke, who don’t exhibit severe dragging of the paretic foot. However, the algorithm should be improved for the analysis of paretic stance and swing phase.
This study was jointly conducted by Nina Lefeber (1) (2), Marc Degelaen (1), Iwona Safin (1) and David Beckwée (1)