Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke

S.S. Fricke, A.C. Dragunas, Keith E. Gordon, H. van der Kooij, E.H.F. van Asseldonk, Julius P. A. Dewald

Research output: Contribution to conferenceAbstractOther research output

Abstract

Abnormal joint torque coupling between (sub)maximal isometric hip extension and hip adduction torques was found in individuals with chronic hemiparetic stroke in a previous study, however, it is unclear how this coupling affects dynamic tasks like walking. Especially during stance phase of gait, in which hip extension and abduction torques need to be generated simultaneously, this abnormal hip extension/adduction coupling might lead to instability. Therefore, the aim of this study was to develop a method to quantify joint torque coupling patterns in stroke patients by modulating hip extension torques during walking.
We developed a method to increase or decrease hip extension torques during walking in the sagittal plane and measure the effect on hip abduction/adduction torques. A motor which was placed behind a treadmill was attached to the pelvis of the subject and a constant force was applied in anteroposterior direction while the subject was walking. Each subject participated in three to five trials of two minutes and in each trial a different force was applied in either forward or backward direction. For each trial, joint angles and joint torques were calculated based on kinematic data and ground reaction forces.
Preliminary results of one healthy participant and one stroke patient indicate that hip extension torques during stance phase of walking could be modulated by applying forces in anteroposterior direction to the pelvis. In addition to this, changes of hip abduction torques during stance phase were found. For example, applying a force in backward direction led to a larger hip extension torque and less hip abduction torque compared to normal walking in both participants. In contrast to this, applying a force in forward direction resulted in less hip extension torque and larger hip abduction torque.
Based on these preliminary findings, we conclude that applying a force in anteroposterior direction to the pelvis during walking might be used to modulate hip extension torques and measure joint torque coupling in the abduction/adduction degree of freedom during walking. After further optimizing our protocol, additional experiments will be performed in individuals with stroke and healthy participants. Results of these future experiments are expected to provide insight into the effect of abnormal joint torque coupling patterns on walking stability following stroke and may lead to the development of new more subject specific therapies.
Original languageEnglish
Publication statusPublished - Jan 2017
Event6th Dutch Bio-Medical Engineering Conference 2017 - Hotel Zuiderduin, Egmond aan Zee, Netherlands
Duration: 26 Jan 201727 Jan 2017
Conference number: 6
http://www.bme2017.nl

Conference

Conference6th Dutch Bio-Medical Engineering Conference 2017
Abbreviated titleBME 2017
CountryNetherlands
CityEgmond aan Zee
Period26/01/1727/01/17
Internet address

Fingerprint

Torque
Walking
Joints
Stroke
Hip
Pelvis
Healthy Volunteers
Gait
Biomechanical Phenomena

Cite this

Fricke, S. S., Dragunas, A. C., Gordon, K. E., van der Kooij, H., van Asseldonk, E. H. F., & Dewald, J. P. A. (2017). Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke. Abstract from 6th Dutch Bio-Medical Engineering Conference 2017, Egmond aan Zee, Netherlands.
Fricke, S.S. ; Dragunas, A.C. ; Gordon, Keith E. ; van der Kooij, H. ; van Asseldonk, E.H.F. ; Dewald, Julius P. A. / Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke. Abstract from 6th Dutch Bio-Medical Engineering Conference 2017, Egmond aan Zee, Netherlands.
@conference{7e39b1d4d40449c3b32f87b351da5ed1,
title = "Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke",
abstract = "Abnormal joint torque coupling between (sub)maximal isometric hip extension and hip adduction torques was found in individuals with chronic hemiparetic stroke in a previous study, however, it is unclear how this coupling affects dynamic tasks like walking. Especially during stance phase of gait, in which hip extension and abduction torques need to be generated simultaneously, this abnormal hip extension/adduction coupling might lead to instability. Therefore, the aim of this study was to develop a method to quantify joint torque coupling patterns in stroke patients by modulating hip extension torques during walking.We developed a method to increase or decrease hip extension torques during walking in the sagittal plane and measure the effect on hip abduction/adduction torques. A motor which was placed behind a treadmill was attached to the pelvis of the subject and a constant force was applied in anteroposterior direction while the subject was walking. Each subject participated in three to five trials of two minutes and in each trial a different force was applied in either forward or backward direction. For each trial, joint angles and joint torques were calculated based on kinematic data and ground reaction forces.Preliminary results of one healthy participant and one stroke patient indicate that hip extension torques during stance phase of walking could be modulated by applying forces in anteroposterior direction to the pelvis. In addition to this, changes of hip abduction torques during stance phase were found. For example, applying a force in backward direction led to a larger hip extension torque and less hip abduction torque compared to normal walking in both participants. In contrast to this, applying a force in forward direction resulted in less hip extension torque and larger hip abduction torque.Based on these preliminary findings, we conclude that applying a force in anteroposterior direction to the pelvis during walking might be used to modulate hip extension torques and measure joint torque coupling in the abduction/adduction degree of freedom during walking. After further optimizing our protocol, additional experiments will be performed in individuals with stroke and healthy participants. Results of these future experiments are expected to provide insight into the effect of abnormal joint torque coupling patterns on walking stability following stroke and may lead to the development of new more subject specific therapies.",
author = "S.S. Fricke and A.C. Dragunas and Gordon, {Keith E.} and {van der Kooij}, H. and {van Asseldonk}, E.H.F. and Dewald, {Julius P. A.}",
year = "2017",
month = "1",
language = "English",
note = "6th Dutch Bio-Medical Engineering Conference 2017, BME 2017 ; Conference date: 26-01-2017 Through 27-01-2017",
url = "http://www.bme2017.nl",

}

Fricke, SS, Dragunas, AC, Gordon, KE, van der Kooij, H, van Asseldonk, EHF & Dewald, JPA 2017, 'Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke' 6th Dutch Bio-Medical Engineering Conference 2017, Egmond aan Zee, Netherlands, 26/01/17 - 27/01/17, .

Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke. / Fricke, S.S.; Dragunas, A.C.; Gordon, Keith E.; van der Kooij, H.; van Asseldonk, E.H.F.; Dewald, Julius P. A.

2017. Abstract from 6th Dutch Bio-Medical Engineering Conference 2017, Egmond aan Zee, Netherlands.

Research output: Contribution to conferenceAbstractOther research output

TY - CONF

T1 - Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke

AU - Fricke, S.S.

AU - Dragunas, A.C.

AU - Gordon, Keith E.

AU - van der Kooij, H.

AU - van Asseldonk, E.H.F.

AU - Dewald, Julius P. A.

PY - 2017/1

Y1 - 2017/1

N2 - Abnormal joint torque coupling between (sub)maximal isometric hip extension and hip adduction torques was found in individuals with chronic hemiparetic stroke in a previous study, however, it is unclear how this coupling affects dynamic tasks like walking. Especially during stance phase of gait, in which hip extension and abduction torques need to be generated simultaneously, this abnormal hip extension/adduction coupling might lead to instability. Therefore, the aim of this study was to develop a method to quantify joint torque coupling patterns in stroke patients by modulating hip extension torques during walking.We developed a method to increase or decrease hip extension torques during walking in the sagittal plane and measure the effect on hip abduction/adduction torques. A motor which was placed behind a treadmill was attached to the pelvis of the subject and a constant force was applied in anteroposterior direction while the subject was walking. Each subject participated in three to five trials of two minutes and in each trial a different force was applied in either forward or backward direction. For each trial, joint angles and joint torques were calculated based on kinematic data and ground reaction forces.Preliminary results of one healthy participant and one stroke patient indicate that hip extension torques during stance phase of walking could be modulated by applying forces in anteroposterior direction to the pelvis. In addition to this, changes of hip abduction torques during stance phase were found. For example, applying a force in backward direction led to a larger hip extension torque and less hip abduction torque compared to normal walking in both participants. In contrast to this, applying a force in forward direction resulted in less hip extension torque and larger hip abduction torque.Based on these preliminary findings, we conclude that applying a force in anteroposterior direction to the pelvis during walking might be used to modulate hip extension torques and measure joint torque coupling in the abduction/adduction degree of freedom during walking. After further optimizing our protocol, additional experiments will be performed in individuals with stroke and healthy participants. Results of these future experiments are expected to provide insight into the effect of abnormal joint torque coupling patterns on walking stability following stroke and may lead to the development of new more subject specific therapies.

AB - Abnormal joint torque coupling between (sub)maximal isometric hip extension and hip adduction torques was found in individuals with chronic hemiparetic stroke in a previous study, however, it is unclear how this coupling affects dynamic tasks like walking. Especially during stance phase of gait, in which hip extension and abduction torques need to be generated simultaneously, this abnormal hip extension/adduction coupling might lead to instability. Therefore, the aim of this study was to develop a method to quantify joint torque coupling patterns in stroke patients by modulating hip extension torques during walking.We developed a method to increase or decrease hip extension torques during walking in the sagittal plane and measure the effect on hip abduction/adduction torques. A motor which was placed behind a treadmill was attached to the pelvis of the subject and a constant force was applied in anteroposterior direction while the subject was walking. Each subject participated in three to five trials of two minutes and in each trial a different force was applied in either forward or backward direction. For each trial, joint angles and joint torques were calculated based on kinematic data and ground reaction forces.Preliminary results of one healthy participant and one stroke patient indicate that hip extension torques during stance phase of walking could be modulated by applying forces in anteroposterior direction to the pelvis. In addition to this, changes of hip abduction torques during stance phase were found. For example, applying a force in backward direction led to a larger hip extension torque and less hip abduction torque compared to normal walking in both participants. In contrast to this, applying a force in forward direction resulted in less hip extension torque and larger hip abduction torque.Based on these preliminary findings, we conclude that applying a force in anteroposterior direction to the pelvis during walking might be used to modulate hip extension torques and measure joint torque coupling in the abduction/adduction degree of freedom during walking. After further optimizing our protocol, additional experiments will be performed in individuals with stroke and healthy participants. Results of these future experiments are expected to provide insight into the effect of abnormal joint torque coupling patterns on walking stability following stroke and may lead to the development of new more subject specific therapies.

M3 - Abstract

ER -

Fricke SS, Dragunas AC, Gordon KE, van der Kooij H, van Asseldonk EHF, Dewald JPA. Development of a method to determine abnormal joint torque coupling patterns during walking in chronic hemiparetic stroke. 2017. Abstract from 6th Dutch Bio-Medical Engineering Conference 2017, Egmond aan Zee, Netherlands.