Analisi cinematica della tecnica rotatoria nel getto del peso: confronto tra modelli tecnici di atleti di categorie diverse.

The goal of this study is of comparing athletes belonging to youth and senior categories, during the execution of the rotatory technique of shot put, and comparing them with the values recorded in literature for top level athletes, with the aim of observing how the most important kinematic parameters evolve and trying to understand the reason why since many years senior Italian athletes are no more at the top in the most important international events. The videos of the first two athletes, executing the rotatory technique, were acquired at the Italian Youth and Senior Championships. Through the three-dimensional system SIMI Motion (Simi Reality Motion Systems GmbH, Unterschleissheim, Germania) the time and kinematic variables of the throw were identified. The results show that young athletes have a technical incorrect behaviour in comparison with expert athletes, especially as to the body position, in the phases preceding the tool release. This study can offer to coaches some suggestions to try to correct some of the outlined individual mistakes.