A 2-D model of wheelchair propulsion

D. A. Morrow, L. Y. Guo, Kristin D Zhao, F. C. Su, K. N. An

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Purpose: To illustrate the potential benefits of kinetic and kinematic models in the exploration of biomechanical studies as illustrated using a simple 2-D static optimization model of wheelchair propulsion. Method. A four-bar linkage analysis was used to determine sagittal plane motion through the range of wheelchair propulsion. Using anthropometric measures of wheelchair users, this analysis determined the angles of shoulder and elbow flexion/extension at a given point in the propulsion cycle. Maximal strength inputs for the model were collected from isokinetic measurements of shoulder and elbow moments. The torque inputs were given as functions of sagittal plane joint angles. Through selection of appropriate model performance criteria, optimization techniques determined shoulder and elbow torque contributions throughout the propulsion cycle. Variations in the model parameters of anterior-posterior (AP) seat position and handrim size went used to show potential of model to evaluate wheelchair configuration using the performance criteria of propulsive moment (Mo) and efficiency as defined by fractional effective force (FEF). Results: The model was able to predict the magnitude and direction of force applied to the handrim from shoulder and elbow moments. These joint moments may be examined along with the generated wheelchair axle propulsion moment. While the model showed no significant changes in either Mo or FEF for AP seat changes, an increase in handrim size was shown to increase FEF. Conclusions: This model was able to simulate wheelchair propulsion and allow for performance analyses. The open nature of the model allowed for tweaking of the kinematic inputs to examine the sensitivity of such factors as seat position and handrim size in wheelchair propulsion. Strength inputs to the model may also be altered to study the potential effects of strength training or muscle weakness.

Original languageEnglish (US)
Pages (from-to)192-196
Number of pages5
JournalDisability and Rehabilitation
Volume25
Issue number4-5
DOIs
StatePublished - Feb 18 2003

Fingerprint

Wheelchairs
Elbow
Torque
Biomechanical Phenomena
Joints
Resistance Training
Muscle Weakness
Articular Range of Motion

ASJC Scopus subject areas

  • Rehabilitation
  • Health Professions(all)

Cite this

A 2-D model of wheelchair propulsion. / Morrow, D. A.; Guo, L. Y.; Zhao, Kristin D; Su, F. C.; An, K. N.

In: Disability and Rehabilitation, Vol. 25, No. 4-5, 18.02.2003, p. 192-196.

Research output: Contribution to journalArticle

Morrow, DA, Guo, LY, Zhao, KD, Su, FC & An, KN 2003, 'A 2-D model of wheelchair propulsion', Disability and Rehabilitation, vol. 25, no. 4-5, pp. 192-196. https://doi.org/10.1080/0963828021000030873
Morrow, D. A. ; Guo, L. Y. ; Zhao, Kristin D ; Su, F. C. ; An, K. N. / A 2-D model of wheelchair propulsion. In: Disability and Rehabilitation. 2003 ; Vol. 25, No. 4-5. pp. 192-196.
@article{c72a3b473adc4a6bbb0cf18e264fc756,
title = "A 2-D model of wheelchair propulsion",
abstract = "Purpose: To illustrate the potential benefits of kinetic and kinematic models in the exploration of biomechanical studies as illustrated using a simple 2-D static optimization model of wheelchair propulsion. Method. A four-bar linkage analysis was used to determine sagittal plane motion through the range of wheelchair propulsion. Using anthropometric measures of wheelchair users, this analysis determined the angles of shoulder and elbow flexion/extension at a given point in the propulsion cycle. Maximal strength inputs for the model were collected from isokinetic measurements of shoulder and elbow moments. The torque inputs were given as functions of sagittal plane joint angles. Through selection of appropriate model performance criteria, optimization techniques determined shoulder and elbow torque contributions throughout the propulsion cycle. Variations in the model parameters of anterior-posterior (AP) seat position and handrim size went used to show potential of model to evaluate wheelchair configuration using the performance criteria of propulsive moment (Mo) and efficiency as defined by fractional effective force (FEF). Results: The model was able to predict the magnitude and direction of force applied to the handrim from shoulder and elbow moments. These joint moments may be examined along with the generated wheelchair axle propulsion moment. While the model showed no significant changes in either Mo or FEF for AP seat changes, an increase in handrim size was shown to increase FEF. Conclusions: This model was able to simulate wheelchair propulsion and allow for performance analyses. The open nature of the model allowed for tweaking of the kinematic inputs to examine the sensitivity of such factors as seat position and handrim size in wheelchair propulsion. Strength inputs to the model may also be altered to study the potential effects of strength training or muscle weakness.",
author = "Morrow, {D. A.} and Guo, {L. Y.} and Zhao, {Kristin D} and Su, {F. C.} and An, {K. N.}",
year = "2003",
month = "2",
day = "18",
doi = "10.1080/0963828021000030873",
language = "English (US)",
volume = "25",
pages = "192--196",
journal = "Disability and Rehabilitation",
issn = "0963-8288",
publisher = "Informa Healthcare",
number = "4-5",

}

TY - JOUR

T1 - A 2-D model of wheelchair propulsion

AU - Morrow, D. A.

AU - Guo, L. Y.

AU - Zhao, Kristin D

AU - Su, F. C.

AU - An, K. N.

PY - 2003/2/18

Y1 - 2003/2/18

N2 - Purpose: To illustrate the potential benefits of kinetic and kinematic models in the exploration of biomechanical studies as illustrated using a simple 2-D static optimization model of wheelchair propulsion. Method. A four-bar linkage analysis was used to determine sagittal plane motion through the range of wheelchair propulsion. Using anthropometric measures of wheelchair users, this analysis determined the angles of shoulder and elbow flexion/extension at a given point in the propulsion cycle. Maximal strength inputs for the model were collected from isokinetic measurements of shoulder and elbow moments. The torque inputs were given as functions of sagittal plane joint angles. Through selection of appropriate model performance criteria, optimization techniques determined shoulder and elbow torque contributions throughout the propulsion cycle. Variations in the model parameters of anterior-posterior (AP) seat position and handrim size went used to show potential of model to evaluate wheelchair configuration using the performance criteria of propulsive moment (Mo) and efficiency as defined by fractional effective force (FEF). Results: The model was able to predict the magnitude and direction of force applied to the handrim from shoulder and elbow moments. These joint moments may be examined along with the generated wheelchair axle propulsion moment. While the model showed no significant changes in either Mo or FEF for AP seat changes, an increase in handrim size was shown to increase FEF. Conclusions: This model was able to simulate wheelchair propulsion and allow for performance analyses. The open nature of the model allowed for tweaking of the kinematic inputs to examine the sensitivity of such factors as seat position and handrim size in wheelchair propulsion. Strength inputs to the model may also be altered to study the potential effects of strength training or muscle weakness.

AB - Purpose: To illustrate the potential benefits of kinetic and kinematic models in the exploration of biomechanical studies as illustrated using a simple 2-D static optimization model of wheelchair propulsion. Method. A four-bar linkage analysis was used to determine sagittal plane motion through the range of wheelchair propulsion. Using anthropometric measures of wheelchair users, this analysis determined the angles of shoulder and elbow flexion/extension at a given point in the propulsion cycle. Maximal strength inputs for the model were collected from isokinetic measurements of shoulder and elbow moments. The torque inputs were given as functions of sagittal plane joint angles. Through selection of appropriate model performance criteria, optimization techniques determined shoulder and elbow torque contributions throughout the propulsion cycle. Variations in the model parameters of anterior-posterior (AP) seat position and handrim size went used to show potential of model to evaluate wheelchair configuration using the performance criteria of propulsive moment (Mo) and efficiency as defined by fractional effective force (FEF). Results: The model was able to predict the magnitude and direction of force applied to the handrim from shoulder and elbow moments. These joint moments may be examined along with the generated wheelchair axle propulsion moment. While the model showed no significant changes in either Mo or FEF for AP seat changes, an increase in handrim size was shown to increase FEF. Conclusions: This model was able to simulate wheelchair propulsion and allow for performance analyses. The open nature of the model allowed for tweaking of the kinematic inputs to examine the sensitivity of such factors as seat position and handrim size in wheelchair propulsion. Strength inputs to the model may also be altered to study the potential effects of strength training or muscle weakness.

UR - http://www.scopus.com/inward/record.url?scp=0037452649&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037452649&partnerID=8YFLogxK

U2 - 10.1080/0963828021000030873

DO - 10.1080/0963828021000030873

M3 - Article

VL - 25

SP - 192

EP - 196

JO - Disability and Rehabilitation

JF - Disability and Rehabilitation

SN - 0963-8288

IS - 4-5

ER -