Show simple item record

dc.contributor.advisorStavness, Ian
dc.creatorShabani, Mohammad 1990-
dc.date.accessioned2017-09-25T14:50:28Z
dc.date.available2017-09-25T14:50:28Z
dc.date.created2016-05
dc.date.issued2016-06-09
dc.date.submittedMay 2016
dc.identifier.urihttp://hdl.handle.net/10388/8135
dc.description.abstractPostural stability is affected by several biomechanical factors including posture, foot placement, intrinsic muscle stiffness, and joint stiffness due to muscle co-activation. Increasing natural postural stability could make balance control easier for individuals with diminished postural responses. However, it is not clear which biomechanical factors most significantly contribute to the natural postural stability. The objective of this thesis is to simulate the effect of intrinsic muscle stiffness and muscle co-activation on the postural stability using a musculoskeletal computer model subjected to support-platform perturbations. We developed a customized static-optimization method to encourage co-activation using joint stiffness as an intermediate variable to improve postural stability. To this end, we also implemented a short-range stiffness muscle model and compared its stabilizing effects to a standard Hill-type muscle model. Our result showed that co-activation of muscles resulted in higher joint stiffness and higher postural stability and that intrinsic muscle short-range stiffness contributed significantly to postural stability.
dc.format.mimetypeapplication/pdf
dc.subjectPostural stability
dc.subjectMusculoskeletal simulation
dc.subjectCo-activation
dc.subjectStatic Optimization
dc.subjectShort-range stiffness
dc.subjectHill-type muscle model
dc.titleComputer Simulation of the Effects of Muscle Co-activation and Joint Stiffness on Postural Stability
dc.typeThesis
dc.date.updated2017-09-25T14:50:33Z
thesis.degree.departmentComputer Science
thesis.degree.disciplineComputer Science
thesis.degree.grantorUniversity of Saskatchewan
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.Sc.)
dc.type.materialtext
dc.contributor.committeeMemberGutwin, Carl
dc.contributor.committeeMemberKeil, Mark
dc.contributor.committeeMemberZhang, Chris
dc.creator.orcid0000-0003-3541-6076


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record