Cargando…

Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics

Post-stroke rehabilitation often aims to increase walking speeds, as faster walking is associated with improved functional status and quality of life. However, for successful community ambulation, ability to modulate (increase and decrease) walking speeds is more important than walking continuously...

Descripción completa

Detalles Bibliográficos
Autores principales: Liang, Jing Nong, Ho, Kai-Yu, Lee, Yun-Ju, Ackley, Corey, Aki, Kiley, Arias, Joshua, Trinh, Jassie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000078/
https://www.ncbi.nlm.nih.gov/pubmed/33805603
http://dx.doi.org/10.3390/brainsci11030365
_version_ 1783670923029643264
author Liang, Jing Nong
Ho, Kai-Yu
Lee, Yun-Ju
Ackley, Corey
Aki, Kiley
Arias, Joshua
Trinh, Jassie
author_facet Liang, Jing Nong
Ho, Kai-Yu
Lee, Yun-Ju
Ackley, Corey
Aki, Kiley
Arias, Joshua
Trinh, Jassie
author_sort Liang, Jing Nong
collection PubMed
description Post-stroke rehabilitation often aims to increase walking speeds, as faster walking is associated with improved functional status and quality of life. However, for successful community ambulation, ability to modulate (increase and decrease) walking speeds is more important than walking continuously at constant speeds. Increasing paretic propulsive forces to increase walking speed has been extensively examined; however, little is known about the mechanics of slow walking post-stroke. The primary purpose of this study was to identify the effects of increased and decreased walking speeds on post-stroke kinetics and ankle kinematics. Fifteen individuals with chronic post-stroke hemiparesis and 15 non-neurologically impaired controls walked over an instrumented treadmill under: slow, self-selected, and fast walking speeds. We examined the peak propulsive forces, propulsive impulse, peak braking forces, braking impulse, and ankle kinematics under each condition. When walking at slow walking speeds, paretic limbs were unable to reduce braking impulse and peak propulsive force or modulate ankle kinematics. Impaired modulation of paretic gait kinetics during slow walking places people post-stroke at high risks for slip-related falls. These findings suggest the need for developing gait retraining paradigms for slow walking in individuals chronically post-stroke that target the ability of the paretic limb to modulate braking forces.
format Online
Article
Text
id pubmed-8000078
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-80000782021-03-28 Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics Liang, Jing Nong Ho, Kai-Yu Lee, Yun-Ju Ackley, Corey Aki, Kiley Arias, Joshua Trinh, Jassie Brain Sci Article Post-stroke rehabilitation often aims to increase walking speeds, as faster walking is associated with improved functional status and quality of life. However, for successful community ambulation, ability to modulate (increase and decrease) walking speeds is more important than walking continuously at constant speeds. Increasing paretic propulsive forces to increase walking speed has been extensively examined; however, little is known about the mechanics of slow walking post-stroke. The primary purpose of this study was to identify the effects of increased and decreased walking speeds on post-stroke kinetics and ankle kinematics. Fifteen individuals with chronic post-stroke hemiparesis and 15 non-neurologically impaired controls walked over an instrumented treadmill under: slow, self-selected, and fast walking speeds. We examined the peak propulsive forces, propulsive impulse, peak braking forces, braking impulse, and ankle kinematics under each condition. When walking at slow walking speeds, paretic limbs were unable to reduce braking impulse and peak propulsive force or modulate ankle kinematics. Impaired modulation of paretic gait kinetics during slow walking places people post-stroke at high risks for slip-related falls. These findings suggest the need for developing gait retraining paradigms for slow walking in individuals chronically post-stroke that target the ability of the paretic limb to modulate braking forces. MDPI 2021-03-13 /pmc/articles/PMC8000078/ /pubmed/33805603 http://dx.doi.org/10.3390/brainsci11030365 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Liang, Jing Nong
Ho, Kai-Yu
Lee, Yun-Ju
Ackley, Corey
Aki, Kiley
Arias, Joshua
Trinh, Jassie
Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics
title Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics
title_full Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics
title_fullStr Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics
title_full_unstemmed Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics
title_short Slow Walking in Individuals with Chronic Post-Stroke Hemiparesis: Speed Mediated Effects of Gait Kinetics and Ankle Kinematics
title_sort slow walking in individuals with chronic post-stroke hemiparesis: speed mediated effects of gait kinetics and ankle kinematics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000078/
https://www.ncbi.nlm.nih.gov/pubmed/33805603
http://dx.doi.org/10.3390/brainsci11030365
work_keys_str_mv AT liangjingnong slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics
AT hokaiyu slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics
AT leeyunju slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics
AT ackleycorey slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics
AT akikiley slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics
AT ariasjoshua slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics
AT trinhjassie slowwalkinginindividualswithchronicpoststrokehemiparesisspeedmediatedeffectsofgaitkineticsandanklekinematics