2019
DOI: 10.1109/tnsre.2019.2930751
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Validity and Reproducibility of Inertial Physilog Sensors for Spatiotemporal Gait Analysis in Patients With Stroke

Abstract: Spatiotemporalgait analysis can provide quantitative information to assess treatment outcomes in stroke survivors. Therefore, clinicians need a portable, easy-to-use and low-cost tool, which accurately and reliably measures spatiotemporal gait parameters. This study examined the concurrent validity and reproducibility of the Gait Up© gait analysis package for spatiotemporal gait analysis in subacute stroke survivors. Twenty-five subacute stroke survivors participated in 2 walking tests. Spatiotemporal gait par… Show more

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Cited by 54 publications
(63 citation statements)
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“…For spatiotemporal and symmetry ratio parameters, a change of 2–25% of performance (2.19 < MDC% < 25.06) could be identified but lower absolute reliability was found for symmetry index parameters (86.38 < MDC% < 395.84). These results are comparable to those reported in recent studies in which Physilog ® inertial sensors were also to measured spatiotemporal gait parameters [ 52 , 72 ]. Indeed, Lefeber et al in 2019 reported a test retest reliability of gait parameters at self-selected comfortable speed on a 12-m walkway, with 20-min break between sessions in patients after a stroke using foot-worn sensors.…”
Section: Discussionsupporting
confidence: 91%
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“…For spatiotemporal and symmetry ratio parameters, a change of 2–25% of performance (2.19 < MDC% < 25.06) could be identified but lower absolute reliability was found for symmetry index parameters (86.38 < MDC% < 395.84). These results are comparable to those reported in recent studies in which Physilog ® inertial sensors were also to measured spatiotemporal gait parameters [ 52 , 72 ]. Indeed, Lefeber et al in 2019 reported a test retest reliability of gait parameters at self-selected comfortable speed on a 12-m walkway, with 20-min break between sessions in patients after a stroke using foot-worn sensors.…”
Section: Discussionsupporting
confidence: 91%
“…Gait assessments were performed by the same examiner (JS). Participants wore walking shoes, with 2 inertial measurement units with tri-axial accelerometers and gyroscopes (Physilog5 ® , 200 Hz, BioAGM, Gait Up, CH), placed above both feet (behind the base of the fifth metatarsal) [ 52 ].…”
Section: Methodsmentioning
confidence: 99%
“…At this time, the acceleration signal of heel and toe experience, from low to high and from high to low, while the variation of acceleration signal is increasingly intense, as the accelerometer is almost static, when the feet are all in contact with the ground. The threshold of the acceleration signal's integrated rate is used to preliminarily segment the continuous acceleration signal, an approach which is compared to the segmentation method, based on the comprehensive acceleration threshold, as presented in the literature [15]. The results show that the proposed method is easier, for the initial segmentation of the continuous acceleration signal, while the effect is also very improved.…”
Section: Preliminary Segmentationmentioning
confidence: 99%
“…The vertical displacement of heel and toe is calculated above, using Equations (12)- (15), while the times of occurrence of HS, TS, HS and TO are determined respectively, as shown in Figures 11 and 12. In Figures 11 and 12, the abscissa is the time, while the ordinate is the displacement signal of heel and toe, after quadratic integration.…”
Section: Analysis Of Gait Event Determinationmentioning
confidence: 99%
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