The master's thesis aimed to study the strains in a vertical direction during women’s and men’s 3x3 basketball games, while examining the usability of the VERT system in this specific game, where it has not been used before. Three teams were included in the research, and we observed them during the final matches of the 3x3 basketball national championship’s final matches. Using the inertial measuring device VERT, calibrated with the help of a pressure plate beforehand, we recorded and accurately measured all players' jumps executed during the game. The frequency and height of these jumps were monitored. The results were statistically processed using the IBM SPSS Statistics programme, employing the Mann-Whitney U test. The findings indicated that the number of jumps was higher among men than women. The most significant difference in the number of jumps during the games was observed in two- and one-legged jumps for the ball. The vertical jump values varied considerably, ranging from 8.90 cm to 30.80 cm among female team members, with an average jump height of 16.19 cm. For male team members, the jump heights ranged from 7.70 cm to 54.00 cm, with an average jump height of 25.22 cm. The results showed that the values of the vertical jumps varied. In terms of relative value of the jumps, both men and women frequently achieved jump heights slightly above 50,00 % of the maximum height. The highest reached heights occurred in males' one-legged jump layups and blocking shots, where the heights exceeded 70,00 % of the maximum height.
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