Reference : Validated assessment of gait sub-phase durations in older adults using an acceleromet...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/2268/218347
Validated assessment of gait sub-phase durations in older adults using an accelerometer-based ambulatory system
English
Boutaayamou, Mohamed mailto [Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Exploitation des signaux et images >]
GILLAIN, Sophie mailto [Centre Hospitalier Universitaire de Liège - CHU > > Service de gériatrie >]
Schwartz, Cédric mailto [Université de Liège - ULiège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation >]
Denoël, Vincent mailto [Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil >]
Petermans, Jean mailto [Université de Liège - ULiège > Département des sciences cliniques > Gériatrie >]
Croisier, Jean-Louis mailto [Université de Liège - ULiège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation >]
Forthomme, Bénédicte mailto [Université de Liège - ULiège > Département des sciences de la motricité > Rééducation du membre supérieur >]
Verly, Jacques mailto [Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Dép. d'électric., électron. et informat. (Inst.Montefiore) >]
Bruls, Olivier mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques >]
Garraux, Gaëtan mailto [Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie du système nerveux >]
2018
Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2018)
248-255
Yes
No
International
978-989-758-279-0
11th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2018)
19 - 21 January 2018
Funchal, Madeira
Portugal
[en] Validated extraction ; Refined gait parameters ; Gait sub-phase durations ; Foot-worn accelerometers ; Older adults ; Signal processing
[en] Validated extraction of gait sub-phase durations using an ambulatory accelerometer-based system is a current unmet need to quantify subtle changes during the walking of older adults. In this paper, we describe (1) a signal processing algorithm to automatically extract not only durations of stride, stance, swing, and double support phases, but also durations of sub-phases that refine the stance and swing phases from foot-worn accelerometer signals in comfortable walking of older adults, and (2) the validation of this extraction using reference data provided by a gold standard system. The results show that we achieve a high agreement between our method and the reference method in the extraction of (1) the temporal gait events involved in the estimation of the phase/sub-phase durations, namely heel strike (HS), toe strike (TS), toe-off (TO), maximum of heel clearance (MHC), and maximum of toe clearance (MTC), with an accuracy and precision that range from ‒3.6 ms to 4.0 ms, and 6.5 ms to 12.0 ms, respectively, and (2) the gait phase/sub-phase durations, namely stride, stance, swing, double support phases, and HS to TS, TO to MHC, MHC to MTC, and MTC to HS sub-phases, with an accuracy and precision that range from ‒4 ms to 5 ms, and 9 ms to 15 ms, respectively, in comfortable walking of a thirty-eight older adults ( (mean ± standard deviation) 71.0 ± 4.1 years old). This demonstrates that the developed accelerometer-based algorithm can extract validated temporal gait events and phase/sub-phase durations, in comfortable walking of older adults, with a promising degree of accuracy/precision compared to reference data, warranting further studies.
Laboratoire d'Analyse du Mouvement Humain (LAMH) / Signal and Image Exploitation (INTELSIG) - University of Liège, Liège, Belgium
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/218347

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
biosignals_2018_MBoutaayamou.pdfAuthor postprint1.61 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.