Title: Reduction of lower limb model indeterminacy by force redundancy in sit-to-stand motion
Authors: Mak, Margaret K.Y. * ×
Levin, Oron *
Mizrahi, Joseph
Hui-Chan, Christina W.Y. #
Issue Date: Feb-2004
Publisher: Human Kinetics Publishers
Series Title: Journal of Applied Biomechanics vol:20 issue:1 pages:95-102
Abstract: Calculation of joint torques during the rising phase of sit-to-stand motion is in most cases indeterminate, due to the unknown thighs/chair reaction forces in addition to the other sources of uncertainties such as joint positioning and anthropometric data. In the present study we tested the reliability of computation of the joint torques from a five-segment model; we used force plate data of thighs/chair and feet/ground reaction forces, in addition to kinematic measurements. While solving for joint torques before and after seat-off, differences between model solutions and measured data were calculated and minimized using an iterative algorithm for the reestimation of joint positioning and anthropometric properties. The above method was demonstrated for a group of six normal elderly persons.
ISSN: 1065-8483
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Movement Control & Neuroplasticity Research Group
* (joint) first author
× corresponding author
# (joint) last author

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