kth_logo.gif

Project

Muscle-driven human movements

Research Area: Biomechanics
Project Members:
Eriksson, 
Kosterina, N.K.
Nordmark, A.
Pettersson, R.P.
Westerblad, H
Sponsor: VR 

Project Description

This project aims at improved simulations of human movements, with an emphasis on physiologically accurate muscle models as actuators. The project is based on our previous work: the evaluation of optimal movement of a mechanism, from an initial to a target configuration under the influence of simplified joint moment actuators, and the numerical representation of contracting muscles. The latter has focussed on the memory effects on the produced force, when an activated muscle is subjected to length variations. An improved muscular representation in the simulations will give important information on the relations between the control system, as expressed by an assumed optimality criterion, and the resulting movement pattern. The main applications of the movement simulations are related to clinical aspects, such as gait disorders in children, but also to top-athletic movements, reflecting the common desire for best possible movement strategies within individual restrictions. The concrete objectives of the project are to develop models for history-related muscular force production, suited for inclusion in the movement optimization, and to re-cast the optimization setting so that the muscle activation measures, rather than integrated joint resultant moments, are seen as the control variables creating a movement. A supporting sub-project deals with obtaining individual muscle data from MR and CT images.

Publications related to the project

YearTitle

Internal Reports related to the project

YearTitleDocument Type