ABSTRACT
Mathematical modelling using rigid bodies and elastic structures to represent body segments is explained together with various ways of representing the force-generating capabilities of muscle. Direct and indirect methods for determining the physical parameters associated with these elements are described. Before using a model to answer a research question it is first necessary to establish that the model is an adequate representation of the real physical system. This process of model evaluation by comparing model output with real data is discussed. Examples of applications of computer modelling are given along with guidelines on conducting and reporting a study.
