Author(s): OZIMEK, M., LIPCZYNSKI, J., SZKOLA, S., DUDA, H., OCHWAT, P., Institution: JAGIELLONIAN UNIVERSITY IN KRAKOW, Country: POLAND, Abstract-ID: 1149

INTRODUCTION:
Football is characterised by high dynamics, and players are required to have above-average technical skills, a range of flexible tactical habits, comprehensive physical fitness and conditioning, high-level decision-making processes, speed of action and a high level of specialisation in their position [1, 2].
METHODS:
The study groups consisted of senior junior football teams with a total of 89 participants competing in the Central Junior League (the highest level of junior competition in Poland) and the Małopolska Senior Junior League (provincial level). The scope of the study included measurements of explosive strength of the lower limbs (CMJ, SQUAT JUMP, DROP JUMP, vertical jump from the left and right leg) and fitness tests (endurance - BEEP TEST, speed - 5m, 10m, 20m, 30m, special fitness - Illinois Agility Test, RAST Test) [3, 4, 5].
RESULTS:
The individual training regimes did not cause any significant changes in the teams' positions in relation to each other in terms of fitness levels, but they did result in increases in the average performance levels of the tested abilities in the players in each team. With regard to the nature of changes in fitness during the study period, all teams conducted training that had a significant impact on the improvement and development of players in this respect [6, 7].
CONCLUSION:
Regardless of the level of athleticism, improvements were seen in jumping ability, speed, and endurance. The factor that had the greatest impact on the athletic level of the teams studied was training – its volume and structure. The more specific and tailored to the requirements of the discipline the training was, the greater its effectiveness.
References
1. Janjić et al. 2010, 2. Carling 2010, 3. Léger et al. 1984, 4. Roozen 2008, 5. Draper and Whyte'a 1997, 6. Hachan 2013, 7. Karahan 2020.