Differences in anticipatory postural adjustments between self-generated and triggered gait initiation in 20 healthy subjects

Neurophysiologie clinique = Clinical neurophysiology
A DelvalL Defebvre

Abstract

Preparation of upper-limb movements differs between self-paced and triggered conditions. This study analyzed the anticipatory postural adjustments (APAs) of gait initiation in normal subjects in 2 conditions: self-generated and triggered by a "beep" sound. We recorded kinematic, spatiotemporal parameters of the first two steps by means of video motion analysis (6 infrared cameras), and kinetic parameters (using a force platform and the optoelectronic system) in 20 normal subjects. Two conditions: 1) self-generated initiation; and 2) initiation triggered by a "beep" sound were studied to evaluate the APA phase, by recording kinetic data (duration of the APAs, trajectory of the center of pressure, speed and trajectory of the center of mass). Kinematic data (first and second step speed, length and duration) were also recorded. First step speed and length were increased in self-paced gait initiation compared to triggered gait initiation in controls. We found no difference between the 2 conditions in terms of second step kinematic data. It was caused by a significant difference between the 2 conditions for the temporal characteristics of anticipatory postural adjustments (APAs) in the initiation of the first step, which was longer w...Continue Reading

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Citations

Sep 5, 2009·Dysphagia·Norman A Leopold, Stephanie K Daniels
Aug 16, 2013·Computer Methods in Biomechanics and Biomedical Engineering·T HusseinJ Larue
Jun 3, 2014·Journal of Neuroengineering and Rehabilitation·Nicola CauPaolo Capodaglio
Feb 11, 2014·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Arnaud DelvalLuc Defebvre
Apr 22, 2008·Neurophysiologie clinique = Clinical neurophysiology·A DelvalL Defebvre
Jul 17, 2009·Revue neurologique·A Delval, P Krystkowiak
Nov 17, 2009·Gait & Posture·Ana QueraltJuan M Castellote

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