RT Journal Article T1 Changes in muscle strength, jump, and sprint performance in young elite basketball players: the impact of combined high-speed resistance training and plyometrics A1 Yáñez García, Juan Manuel A1 Rodríguez Rosell, David A1 Mora Custodio, Ricardo A1 González Badillo, Juan José K1 Strength training K1 Strength gains K1 Chronological age K1 Maturity status K1 Full squat AB This study aimed to compare the effect of a combined resistance training (RT) and plyometrics on strength, sprint, and jump performance in basketball players of different ages. Thirty three elite basketball players from the same academy were categorized into 3 groups by chronological age: under-13 (U13, n = 11); under-15 (U15, n = 11); and under-17 (U17, n = 11). Players participated in a 6-week strength training program that included 2 sessions each week and consisted of full squats with low loads (45–60% 1 repetition maximum) and low volume (2–3 sets and 4–8 repetitions), jumps, and sprint exercises. All repetitions were performed at maximal intended velocity. In addition to strength training sessions, subjects performed 4 on court basketball training sessions plus 2 official matches per week. After training program, all 3 experimental groups resulted in significant improvements (p < 0.05–0.001) in maximal strength (Δ: 9.2–27.3%; effect size [ES]: 0.38–0.82), countermovement jump height (Δ: 6.6–11.6%; ES: 0.37–0.95), and sprint time in 10 and 20 m (Δ: −3.9 to −0.3%; ES: 0.09–0.69) for all experimental groups. Comparison between groups showed that training program was more effective in inducing improvements in most variables assessed for U13 compared with U15 (ES: 0.11–0.42) and U17 (ES: 0.20–0.43), whereas differences between U15 and U17 were relevant in jump and strength parameters (ES: 0.20–0.35). Therefore, these findings suggest that high-speed RT combined with plyometrics produces increments in several important variables, including strength, jump, and sprint, to yield high performance during a match in young basketball players. However, training program used seems to be generally less effective as the age of the basketball players increased. PB National Strength and Conditioning Association YR 2022 FD 2022 LK https://hdl.handle.net/10433/25087 UL https://hdl.handle.net/10433/25087 LA en NO Journal of Strength and Conditioning Research 36(2):p 478-485 NO Departamento: Deporte e Informática DS RIO RD Apr 23, 2026