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This article deals with the issue of Relative Age Effect (RAE), which enables the exploration of differences and links between the expected and observed distribution of birth date of athletes based on their date of birth. It is expected that into the elite choice are chosen athletes, who were born in the beginning of the year. Therefore, athletes born in last months of year are disadvantaged. In this article, RAE was tested by the means of Chi-squared test in Goodness-of-fit test and Kolmogorov-Smirnov test. Afterwards, Cramer´s V coefficient was used for more accurate estimation of a potency of the association between expected and observed distribution. By the usage of methods previously mentioned it was found out that in selected sport clubs, the results of RAE are not statistically confirmed, however, different connections, which cannot be left unnoticed, were observed. In the conclusion, there is stated that even though it is not obvious on the fleeting glance, the junior category in more influenced by RAE than the senior category. This fact is as such affected also by the nature of shotgun shooting, it emphasizes overall physical condition and physique rather than separate physical and age details of a shooter.

Influence of Relative Age Effect on competitive shooters of clubs SSK Dukla Hradec Králové and SSKP Kometa Brno