title: Identification and characterisation of heel strike transient.
abstract: This study set out to ascertain the incidence of a heel strike transient (HST) and to verify whether modifications of muscle activation time could be correlated with the presence and the characteristic of a HST. Lower limb kinematics, kinetics and surface electromyography (SEMG) of normal subjects were examined during barefoot walking. A short-lived sharp HST was present in 76% of the trials while a smooth HST, of longer duration was seen in 13.3% of the trials. The transient phenomenon was absent in the remaining 10.7% of trials. The SEMG showed that alteration in the activation timing of muscles correlated with the presence of a HST.
authors.affiliation: Dipartimento di Ingegneria Informatica, Gestionale e dell'Automazione, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy. fedi@diiga.univpm.it
authors.forename: Federica
authors.initials: F
authors.lastname: Verdini
authors.forename: M
authors.initials: M
authors.lastname: Marcucci
authors.forename: M G
authors.initials: MG
authors.lastname: Benedetti
authors.forename: T
authors.initials: T
authors.lastname: Leo
mesh_terms: D000328:Adult; D005260:Female; D006365:Heel / Q000502:physiology*; D006801:Humans; D008297:Male; D016138:Walking / Q000502:physiology*