A method for describing the motion of biological systems.

Abstract The concept of biomotion as a quantifiable kinematic entity, characterized by its inherent non-repeatability, was investigated. A set of time functions of the generalized coordinates of the model of the biosystem in question, together with the length of the time interval during which the motion takes place, completely defines the biomotion. By adopting a Fourier series representation of the motion it is possible to present the motion of the total biosystem as the product of an amplitude matrix and a frequency matrix. The theory is illustrated by an example.