Publications of Sophie GILLAIN
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See detailGait symmetry in the dual task condition as a predictor of future falls among independent older adults: a 2-year longitudinal study
GILLAIN, Sophie ULiege; Boutaayamou, Mohamed ULiege; Schwartz, Cédric ULiege et al

in Aging Clinical and Experimental Research (2019), 31(8), 1057-1067

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See detailValidated assessment of gait sub-phase durations in older adults using an accelerometer-based ambulatory system
Boutaayamou, Mohamed ULiege; GILLAIN, Sophie ULiege; Schwartz, Cédric ULiege et al

in Proceedings of the 11th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2018) (2018)

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 ... [more ▼]

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. [less ▲]

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See detailUsage des statines en gériatrie : quid de la dé-prescription
GILLAIN, Sophie ULiege; PETERMANS, Jean ULiege

Scientific conference (2017, May)

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See detailData set of healthy old people assessed for three walking conditions using accelerometric and opto-electronic methods
GILLAIN, Sophie ULiege; Boutaayamou, Mohamed ULiege; Dardenne, Nadia ULiege et al

in Aging Clinical and Experimental Research (2017), 29(6), 1201-1209

Background Gait patterns of healthy aging are needed to allow a comparison with pathological situations. However, little data is available. Objective To present gait pattern of healthy older specially ... [more ▼]

Background Gait patterns of healthy aging are needed to allow a comparison with pathological situations. However, little data is available. Objective To present gait pattern of healthy older specially selected to be “healthy walkers”. Method Fifty-seven older people benefited from a geriatric assessment including clinical and functional evaluations to include only those without gait disorders. Gait data were simultaneously recorded using a tri-axial accelerometer placed on the waist and four 3D position markers placed on the feet at the level of the heel and the toe. Volunteers walked at comfortable self-selected speed (CW), fast self-selected speed (FW), and finally in dual task walking condition (DTW). The extracted gait parameters were: gait speed, stride length, stride frequency, regularity and symmetry, swing, stance and double support time and ratio and minimum toe clearance. Gait speed and stride length were normalized to the right leg length. Results Fifty-seven older people with a mean age of 69.7 ± 4.2 years old (range from 65 to 82 years) were included. Data were analyzed according to the gender and according to the age (<70 or ≥70 years old). After normalization to leg length, the main significant differences were shown for stride length and minimum toe clearance in CW, FW and in DTW that were shorter in women. The regularity in FW was significantly lower among older volunteers. Conclusions This work provides a data set considering 14 gait parameters obtained from 57 healthy old people strictly selected and assessed for three walking conditions and shows that GS, SL and MTC have to be related to the gender. The age-related impact on gait performances appears reduced in this cohort. [less ▲]

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See detailGuidelines for assessment of gait and reference values for spatiotemporal gait parameters in older adults; the biomathics and canadian gait consoritums initiative
BEAUCHET, Olivier; ALLALI, G; SEKHON, H et al

in Frontiers in Human Neuroscience (2017), 11

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See detailGait pattern of healthy old people for fast walking condition
GILLAIN, Sophie ULiege; Boutaayamou, Mohamed ULiege; Schwartz, Cédric ULiege et al

in Gerontechnology (2016, September)

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See detailGait speed or gait variability, which one to use as a marker of risk to develop Alzheimer's disease ? A pilot study
GILLAIN, Sophie ULiege; DRAME, M; LEKEU, Françoise ULiege et al

in Aging Clinical and Experimental Research (2016), 28(2), 249-255

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See detailValidation des paramètres de marche par un système accélérométrique (Locométrix*) à l'aide d'un système opto-électronique 3D (Coda Motion )
GILLAIN, Sophie ULiege; Schwartz, Cédric ULiege; Boutaayamou, Mohamed ULiege et al

in Gériatrie et Psychologie Neuropsychiatrie du Vieillissement (2014), 12(supplément 3),

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See detailTHE GERIATRIC ONE-DAY HOSPITAL OF THE UNIVERSITY CENTRUM IN LIEGE
GILLAIN, Sophie ULiege; MENOZZI, Christel ULiege; PETERMANS, Jean ULiege

Scientific conference (2014)

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