Targeted Pelvic Constraint Force Induces Enhanced Use of the Paretic Leg during Walking in Persons Post-Stroke

Seoung Hoon Park; Jui Te Lin; Weena Dee; Chao Jung Hsu; Elliot J. Roth; William Z. Rymer; Ming Wu

doi:10.1109/TNSRE.2020.3018397

Targeted Pelvic Constraint Force Induces Enhanced Use of the Paretic Leg during Walking in Persons Post-Stroke

Seoung Hoon Park, Jui Te Lin, Weena Dee, Chao Jung Hsu, Elliot J. Roth, William Z. Rymer, Ming Wu^*

^*Corresponding author for this work

Physical Medicine and Rehabilitation

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The purpose of this study was to determine whether activation of muscles in the paretic leg, particularly contributing to propulsion, and gait symmetry can be improved by applying a targeted resistance force to the pelvis in the backward direction during stance phase while walking in individuals post-stroke. Thirteen individuals post-stroke participated in two experimental sessions, which consisted of treadmill walking, with either targeted or constant resistances, together with overground walking. For the targeted condition, a resistance force was applied to the pelvis during the stance phase of the paretic leg. For the constant condition, the resistance force was applied throughout the whole gait cycle. Participants showed greater increase in medial hamstring muscle activity in the paretic leg and improved step length symmetry after the removal of targeted resistance force, compared to effects of a constant resistance force (P < 0.03). In addition, treadmill walking with the targeted resistance induced more symmetrical step length during overground walking 10 min after the treadmill walking, compared to the result of the constant resistance force (P = 0.01). Applying a targeted resistance force to the pelvis during the stance phase of the paretic leg may induce an enhanced use of the paretic leg and an improvement in gait symmetry in individuals post-stroke. These results provide evidence showing that applying a targeted resistance to the pelvis may induce a forced use of the paretic leg during walking.

Original language	English (US)
Article number	9171903
Pages (from-to)	2184-2193
Number of pages	10
Journal	IEEE Transactions on Neural Systems and Rehabilitation Engineering
Volume	28
Issue number	10
DOIs	https://doi.org/10.1109/TNSRE.2020.3018397
State	Published - Oct 2020

Funding

Manuscript received March 28, 2020; revised June 12, 2020, July 25, 2020, and August 14, 2020; accepted August 16, 2020. Date of publication August 20, 2020; date of current version October 8, 2020. The work of Ming Wu was supported by the National Institute of Child Health and Human Development under Grant R01HD082216.(Corresponding author: Ming Wu.) Seoung Hoon Park, Jui-Te Lin, Chao-Jung Hsu, Elliot J. Roth, and William Z. Rymer are with the Shirley Ryan AbilityLab, Chicago, IL 60611 USA, and also with Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL 60611 USA (e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]).

Keywords

Stroke
constraint-induced movement therapy
forced use
locomotion
resistance force

ASJC Scopus subject areas

Rehabilitation
General Neuroscience
Internal Medicine
Biomedical Engineering

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10.1109/TNSRE.2020.3018397

Cite this

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title = "Targeted Pelvic Constraint Force Induces Enhanced Use of the Paretic Leg during Walking in Persons Post-Stroke",

abstract = "The purpose of this study was to determine whether activation of muscles in the paretic leg, particularly contributing to propulsion, and gait symmetry can be improved by applying a targeted resistance force to the pelvis in the backward direction during stance phase while walking in individuals post-stroke. Thirteen individuals post-stroke participated in two experimental sessions, which consisted of treadmill walking, with either targeted or constant resistances, together with overground walking. For the targeted condition, a resistance force was applied to the pelvis during the stance phase of the paretic leg. For the constant condition, the resistance force was applied throughout the whole gait cycle. Participants showed greater increase in medial hamstring muscle activity in the paretic leg and improved step length symmetry after the removal of targeted resistance force, compared to effects of a constant resistance force (P < 0.03). In addition, treadmill walking with the targeted resistance induced more symmetrical step length during overground walking 10 min after the treadmill walking, compared to the result of the constant resistance force (P = 0.01). Applying a targeted resistance force to the pelvis during the stance phase of the paretic leg may induce an enhanced use of the paretic leg and an improvement in gait symmetry in individuals post-stroke. These results provide evidence showing that applying a targeted resistance to the pelvis may induce a forced use of the paretic leg during walking.",

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Targeted Pelvic Constraint Force Induces Enhanced Use of the Paretic Leg during Walking in Persons Post-Stroke

Abstract

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