Probing Postural Stability Mechanisms in Locomotion

dc.contributor.advisorJeka, John Jen_US
dc.contributor.authorLogan, David Michaelen_US
dc.contributor.departmentKinesiologyen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2009-10-06T06:38:34Z
dc.date.available2009-10-06T06:38:34Z
dc.date.issued2009en_US
dc.description.abstractIt is not currently known if those upright stability mechanisms utilized in standing posture are present in locomotion. In this investigation, subjects walked or stood on a treadmill in three speed conditions (posture, 1 km/h, 5 km/h) in front of a visual scene consisting of randomly oriented triangles. The triangles translated in the Anterior-Posterior (A/P) direction in either a low or high amplitude condition. Frequency response functions (FRFs) of both the A/P displacement of bilateral kinematic markers and their corresponding segment angles in response to the visual scene translations were computed. Gain and phase of these FRFs had consistent responses in high amplitude visual conditions in the trunk (hip and shoulder displacements, trunk angle), which motivated further comparisons within the trunk during posture and locomotion. In doing so, the postural processes of orientation and equilibrium control were teased apart during locomotion.en_US
dc.format.extent3965214 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/9645
dc.language.isoen_US
dc.subject.pqcontrolledBiology, Neuroscienceen_US
dc.subject.pquncontrolledLocomotionen_US
dc.subject.pquncontrolledPostural Stabilityen_US
dc.subject.pquncontrolledVisionen_US
dc.titleProbing Postural Stability Mechanisms in Locomotionen_US
dc.typeThesisen_US

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