Definition of Epidemiological Indicators Injury, Severity and Exposure Time and Major Concepts in the Surveillance and Record the Sport Injuries. A Systematic Review

In injury prevention researches as an important part of sport medicine studies, use of recording and surveillances’ system on athletes’ injuries requires fundamental concepts. We have aimed to review some terms such as sport injuries, injury intensity and exposure in articles due to variety and conflict results in definition them. The results showed that sport injury for athlete introduced as any muscular skeletal problem which can lead time lose or medical attention. Injury intensity as number of days’ loss or functional limitation in training and match have introduced. The best definition for exposure was injury per 1000 hours-exposure and 1000 athlete-exposures in training and match.