The master's thesis addresses a comparison of physical characteristics and motor abilities of football players competing in the 1st and 2nd Slovenian Youth Leagues (SML), along with a descriptive comparison to results from peers in the English Premier League Academy (PLa). The aim was to determine whether differences exist between players of various competition levels within the Slovenian context and how these compare to international standards. The study included 28 football players (n = 13 from the 2nd SML and n = 15 from the 1st SML), with an average age of 18.46 ± 0,96 years. Standardized tests of body composition were used: body height (TV), body mass (TM), BMI, and skinfold thickness. In addition, motor ability tests were conducted: vertical jump (squat jump – SJ and countermovement jump – CMJ), 20-meter sprint (with intermediate measurements at 5 m and 10 m), agility test (t-test), repeated sprint ability test (PS7x30), and endurance test (30-15 IFT). Data were analyzed using IBM SPSS statistical software, applying descriptive statistics, the t-test, Mann–Whitney U test, and effect size calculation. The results revealed statistically significant differences in body composition, with 1st SML players having a lower body fat percentage and a lower body mass index compared to 2nd SML players. In the sprint, agility, and endurance tests, 1st SML players also achieved significantly better results. Conversely, players from the 2nd SML performed better in vertical jump tests, although the differences were not statistically significant. A comparison with PLa data showed that Slovenian players from the 1st SML achieved better results in some tests (5 m, 10 m, and 20 m sprint times and PS7x30), while they lagged behind in explosive power as measured by vertical jump tests (SJ and CMJ). It can be concluded that the physical and functional characteristics of young football players significantly influence the level of competition achieved. These findings are crucial for coaches, strength and conditioning specialists, and sports educators, as they enable targeted planning of training programs, optimization of selection criteria, and systematic development of youth players toward elite performance. Furthermore, this study provides a foundation for future research within the national context and offers meaningful comparisons with international practices.
|