1. Introduction to epidemiology
2. Soccer injury epidemiology
3. Reliability of soccer injury epidemiology studies
4. Ekstrand and Gillquist propose stretching and strengthening
5. Keller et al advocate warm up and stretching
6. Hawkins and Fuller identify fatigue as a factor
Epidemiology has been defined as "a study of the distribution and determinants of health related states and the application of this study to the control of health problems" (Cherkasski 1991). Although epidemiological research has become more complex and specialised with the accumulation of medical and scientific knowledge, the essence of a good epidemiological study is defined by a simple approach, that allows the reader to follow the argument and draw their own conclusions (Hennekens and Buring 1994).
On an individual level the clinician incorporates epidemiology into their practice as part of the clinical reasoning process, without perhaps knowing it. This manifests itself in many aspects of practice, ranging from having knowledge of the incidence of a particular injury, which helps the expert clinician to quickly focus the assessment, to injury prevention, where the clinicians knowledge of attributable risk may lead them to advocate an intervention in an attempt to reduce the risk of injury.