INTERNAL AND EXTERNAL VALIDITY OF THE MOVEMENT RANGE MEASUREMENT OF TOP SOCCER PLAYERS DURING THE MATCH MEASURED USING THE SOFTWARE SYSTEM TRACKING MOTION BIOIRC

Abstract

The aim of this study is to determine the internal and external validity of measuring the range of motion of top players during a match measured using Software System Tracking Motion BIOIRC. The research was conducted on a sample of 63 players, who were recorded during 11 official matches from the following clubs or national teams: Red Star F.C. Belgrade; Radnicki 1923 F. C. Kragujevac; Partizan F. C. Belgrade; Bordoaux F. C. Bordoaux; senior national teams of Serbia and the National Team of Belgium. The variables provide estimates of the variability of the movement of top players during the game, followed by the software system Tracking motion (BioIRC, Kragujevac, Serbia). The parameters of the movement structure were analyzed by a descriptive statistical method, and the reliability of the monitored variables was examined using linear regression analysis. Based on the obtained results of player movement during the analyzed matches, it can be concluded that the internal and external validity of the range of player movement during the first and second half of the match is very high, both at the level of the whole team and the team lines.