As biomechanists we are concerned with generating, synthesising and organising biomechanical knowledge for the student and the coach. What may be organised knowledge from the point of view of-the biomechanist, may appear as random information to the coach. To help in the generation and conveyance of effective knowledge a systematic approach is required. This systematic approach involves setting out a framework or model within which provides direction in the collection of biomechanical data, and which leads naturally to a consideration of the underlying mechanisms. The purpose of this paper is\to identify and illustrate several systematic approaches to achieve this goal. Four main models can be identified. The first, and most well known appr...