Exposure volume to sports (hours) until injury occurrence (event of interest) or the end of the observation period was used
as the outcome variable. Secondly, the short-term changes of sport participation characteristics of injured athletes during the period preceding the injury were investigated by comparing the data of the week just prior to injury (W−1) with themean values of sport participation characteristics of the preceding 4 weeks (W−2–W−5), using a repeated measures analysis of variance. Values are presented as mean ± SD. Significance was accepted for p < 0.05.