Modelling muscle forces: from scaled fibres to physiological task-groups

James M. Wakeling, Sabrina S.M. Lee
2011 Procedia IUTAM  
Muscles contain a collection of motor units that can have different mechanical properties. It should be expected that the mechanical output from a muscle partly depends on the particular motor units that are activated for a given task. However, muscle models used for biomechanical simulations typically assume that a whole muscle can be represented by a scaled-up muscle fibre. Some models allow the intrinsic properties of the muscle to adapt to the activation levels, but even these may miss
more » ... these may miss important features of the muscle contractions. This paper will discuss how the activity from different types of motor units may be detected during a contraction, and will demonstrate how muscle models that incorporate distinct units result in improved predictions of muscle force.
doi:10.1016/j.piutam.2011.04.028 fatcat:kticwxhitrdshcusjw4bolphh4