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EnglishThe accurate identification of initial and final foot contacts is a crucial prerequisite for obtaining a reliable estimation of spatio-temporal parameters of gait. Well-accepted gold standard techniques in this field are force platforms and instrumented walkways, which provide a direct measure of the foot–ground reaction forces. Nonetheless, these tools are expensive, non-portable and restrict the analysis to laboratory settings. Instrumented insoles with a reduced number of pressure sensing elements might overcome these limitations, but a suitable method for gait events identification has not been adopted yet. The aim of this paper was to present and validate a method aiming at filling such void, as applied to a system including two insoles with 16 pressure sensing elements (element area = 310 mm2), sampling at 100 Hz. Gait events were identified exploiting the sensor redundancy and a cluster-based strategy. The method was tested in the laboratory against force platforms on nine healthy subjects for a total of 801 initial and final contacts. Initial and final contacts were detected with low average errors of (about 20 ms and 10 ms, respectively). Similarly, the errors in estimating stance duration and step duration averaged 20 ms and <10 ms, respectively. By selecting appropriate thresholds, the method may be easily applied to other pressure insoles featuring similar requirements.
A method for gait events detection based on low spatial resolution pressure insoles data / Salis, F.; Bertuletti, S.; Bonci, T.; Della Croce, U.; Mazza, C.; Cereatti, A.. - In: JOURNAL OF BIOMECHANICS. - ISSN 0021-9290. - ELETTRONICO. - 127:(2021), p. 110687. [10.1016/j.jbiomech.2021.110687]
| Titolo: | A method for gait events detection based on low spatial resolution pressure insoles data | |
| Autori: | ||
| Data di pubblicazione: | 2021 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.jbiomech.2021.110687 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Salis et al_2021.pdf | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia | |
| Manuscript_accepted version_Salis.pdf | 2. Post-print / Author's Accepted Manuscript |  | Embargo: 13/08/2022 Richiedi una copia |
http://hdl.handle.net/11583/2927565
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