PRESCRIBING JOINT CO-ORDINATES DURING MODEL PREPARATION IN OPENSIM IMPROVES THE ACCURACY OF LOWER LIMB KINEMATICS

Authors

Chris Jackson
Jacqueline Alderson
Gillian Weir
Cyril Donnelly

Category

Computing/modelling

Document Type

Paper

Abstract

The lower limb sidestepping kinematics of 20 elite female athletes were calculated using: 1) an established direct kinematic (DK) model (criterion) and, 2) two inverse kinematic (IK) models; one with and one without participant-specific joint co-ordinates prescribed during model preparation. The aim of this research was to determine whether prescribing joint co-ordinates influences the accuracy of IK derived sidestepping kinematics. Time-varying analysis (1D SPM) of IK derived hip, knee and ankle joint kinematics showed model’s prepared with participant-specific joint co-ordinates more closely matched that of the criterion measure. Prescribing participant-specific joint coordinates during model preparation improves the accuracy of IK derived sidestepping kinematics in OpenSim.

Recommended Citation

Jackson, Chris; Alderson, Jacqueline; Weir, Gillian; and Donnelly, Cyril (2017) "PRESCRIBING JOINT CO-ORDINATES DURING MODEL PREPARATION IN OPENSIM IMPROVES THE ACCURACY OF LOWER LIMB KINEMATICS," ISBS Proceedings Archive: Vol. 35: Iss. 1, Article 26.
Available at: https://commons.nmu.edu/isbs/vol35/iss1/26