Elito jaunimo krepšininkų anaerobinio parengtumo rodiklių kaita sezono metu ir jų tarpusavio ryšys

Basketball is an invasion team sport, dynamic and intermittent in nature, formed by fast and short displacements, where changes in speed and direction are produced and where jumps are an integral part of the game’s demands. These requirements require good physical conditioning, as it is essential to succeed in basketball. However, the demands vary depending on the age, level and gender of the players. For this, physical fitness can be evaluated through different components, including cardiorespiratory or muscular endurance (Mancha-Triguero et al., 2020). The aim of this study was to investigate anaerobic performance in elite youth basketball players: seasonal changes and the relationships between tests and body sizes indicators. The tasks of the research: 1. To investigate changes across the season in physical performance in youth elite basketball players. 2. To investigate and assess relationships between speed, agility and vertical jump performance in youth elite basketball players. 3. To investigate and assess relationships between tests and body sizes indicators in youth elite basketball players. Subjects. The study included 17 basketball players who were tested with tests every month. Subjects' age – 17,76±1,30, height – 198,52±8,22 cm, and body weight – 86,41±8,58 kg. All basketball players were men playing in the second and third basketball leagues of Lithuania. Testings. The tests were initiated four times – T1, T2, T3, T4. Testing of physical fitness: Countermovement jump (CMJ) test, Countermovement jump with free arms (CMJ FA) test, Sprint 10 m running test, Sprint 20 m running test, Lane agility test. Conclusions: 1. This training programme gives the increase indicators of CMJ (t = 2.73; p = 0.015) test result and Lane Agility (Z = –2.012; p 0.05). 2. A correlation between agility and vertical jump indicators (was moderate relationships), as the agility increases, the indicators of the jump (CMJ and CMJ FA) deteriorates. A correlation between agility and speed indicators (was moderate relationships), as the agility increases, the speed result deteriorates. 3. The youth elite basketball players who are the lower body weight jump higher and run faster

Seasonal changes in physical capacities of elite youth basketball players

The aim of this study was to investigate the differences in seasonal changes in physical capacities of elite youth basketball players during preparatory and competitive periods. A total of 17 elite youth male basketball players from second and third basketball leagues of Lithuania (age: 17.8 ± 1.3 years; height: 198.5 ± 8.2 cm; body mass: 86.4 ± 8.6 kg) voluntarily participated in this study. All of these players also play for youth national teams. The players underwent testing 4 times: before preparatory period, after preparatory period, after first competitive round and after second competitive round. For each player, stage, countermovement jump (CMJ), countermovement jump with free arms (CMJ FA), 10–20 m sprint and lane agility tests were performed. Descriptive analysis was performed using the mean of the count of the event and standard deviation. The reliability of differences between averages was determined in accordance with the Student criterion for independent samples (the normality of distribution was tested by applying the Shapiro–Wilk criterion). In the assessment of the reliability of the results, the difference was deemed to be statistically significant when p < 0.05 (95% reliability). All statistical tests were performed using the software package IBM SPSS version 23.0 for Windows. This study showed that in elite youth basketball players, there were seasonal changes between testing before preparatory period and after second round competitive period, i.e., there was an increase in the indicators of CMJ and lane agility (p < 0.05) but not in CMJ FA and 10–20 m sprint indicators. Physical fitness tests (10– 20 m sprint test, CMJ, CMJ FA, and lane agility test) are essential for the development process of youth basketball players to allow coaches to determine whether players are developing in terms of physical fitness