Limb contribution to increased self-selected walking speeds during body weight support in individuals poststroke

Gait & Posture
Christopher P HurtDavid A Brown

Abstract

Individuals poststroke walk at faster self-selected speeds under some nominal level of body weight support (BWS) whereas nonimpaired individuals walk slower after adding BWS. The purpose of this study was to determine whether increases in self-selected overground walking speed under BWS conditions of individuals poststroke can be explained by changes in their paretic and nonparetic ground reaction forces (GRF). We hypothesize that increased self-selected walking speed, recorded at some nominal level of BWS, will relate to decreased braking GRFs by the paretic limb. We recruited 10 chronic (>12 months post-ictus, 57.5±9.6 y.o.) individuals poststroke and eleven nonimpaired participants (53.3±4.1 y.o.). Participants walked overground in a robotic device, the KineAssist Walking and Balance Training System that provided varying degrees of BWS (0-20% in 5% increments) while individuals self-selected their walking speed. Self-selected walking speed and braking and propulsive GRF impulses were quantified. Out of 10 poststroke individuals, 8 increased their walking speed 13% (p=0.004) under some level of BWS (5% n=2, 10% n=3, 20% n=3) whereas nonimpaired controls did not change speed (p=0.470). In individuals poststroke, changes to sel...Continue Reading

References

Feb 4, 2006·Stroke; a Journal of Cerebral Circulation·Mark G BowdenSteven A Kautz
Sep 11, 2007·Archives of Physical Medicine and Rehabilitation·Lindsey J TurnsSteven A Kautz
Feb 13, 2010·Journal of Neuroengineering and Rehabilitation·Jamie K BurgessDavid A Brown
Sep 22, 2010·Journal of Biomechanics·Michael D Lewek
Apr 26, 2013·Journal of Neurophysiology·Jing Nong Liang, David A Brown

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Citations

Nov 9, 2015·Neurophysiologie clinique = Clinical neurophysiology·C BeyaertG E Frykberg
May 13, 2018·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Sarah A GrahamDavid A Brown
Jun 22, 2018·Journal of Neuroengineering and Rehabilitation·Salil ApteHeike Vallery
Oct 23, 2020·Journal of Neuroengineering and Rehabilitation·Louis N AwadMark G Bowden

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