title: Foot side detection from lower lumbar spine acceleration.
abstract: The purpose of this paper is to present a reliable algorithm to discriminate between left/right foot contact using an accelerometer located over the lower lumbar spine. With the given accelerometer frame orientation, the side detection algorithm, based on the sign of the derivative of the sinusoidal shape obtained from the filtered mediolateral (ML) acceleration, showed 100% correct side detection for all subjects at all walking velocities. From the obtained results, it is concluded that in healthy subjects, the side of subsequent foot contact can be reliably obtained from the ML acceleration pattern of the lower lumbar spine.
authors.affiliation: Handibio - EA4322, Université de Toulon, Toulon-Var, 83957 La Garde cedex, France. Electronic address: khaireddine.ben-mansour@univ-tln.fr.
authors.forename: Khaireddine
authors.initials: K
authors.lastname: Ben Mansour
authors.affiliation: Handibio - EA4322, Université de Toulon, Toulon-Var, 83957 La Garde cedex, France.
authors.forename: Nasser
authors.initials: N
authors.lastname: Rezzoug
authors.affiliation: Handibio - EA4322, Université de Toulon, Toulon-Var, 83957 La Garde cedex, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Gorce
mesh_terms: D000054:Acceleration; D000328:Adult; D000465:Algorithms; D001696:Biomechanical Phenomena; D005260:Female; D005528:Foot / Q000502:physiology*; D005684:Gait / Q000502:physiology*; D006801:Humans; D008159:Lumbar Vertebrae; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods*; D016138:Walking / Q000502:physiology*; D055815:Young Adult
keywords: Accelerometer; Gait; Lumbar spine; Side detection