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Foot velocity profiles during stance phase in gait

Peruzzi, Agnese and Cereatti, Andrea and Della Croce, Ugo (2011) Foot velocity profiles during stance phase in gait. Gait & Posture, Vol. 33 (Supplement 1), p. S23-S24. ISSN 0966-6362. Article.

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DOI: 10.1016/j.gaitpost.2010.10.030

Abstract

Space and time gait parameters can be estimated with wearable inertial units. Linear displacement information is typically obtained by double integrating accelerometer data over each gait cycle. However, usually a drift affects the resulting displacement signals and therefore its effects should be minimized. In the majority of studies using accelerometers, drift is corrected on the hypothesis that during the stance phase, the velocity of the sensor placed on the foot is zero. This assumption allows to set to zero the estimated velocity at both the beginning and the end of the gait cycle. Despite the use of the latter hypothesis is crucial for the drift correction, to the authors’ knowledge, no quantitative validation of this hypothesis is available in the literature. This study aimed at determining the velocity profiles of various points of the foot during the stance phase of the gait cycle while walking at different speeds.

Item Type:Article
ID Code:6114
Status:Published
Refereed:Yes
Uncontrolled Keywords:Gait parameters, foot velocity profiles, stance phase
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-INF/06 Bioingegneria elettronica e informatica
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
Publisher:Elsevier
ISSN:0966-6362
Additional Information:Oral communication at the 11th Congress of the Italian Society of Clinical Movement Analysis, SIAMOC 2010, Ferrara, Italy, 4-7 October 2010.
Deposited On:08 Jun 2011 10:54

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