RT Journal Article T1 Effect of short- vs. long-distance repeated-sprint ability training on physical performance in youth male soccer players A1 Fernández Penedo, Diego A1 García Santamaría, Alberto A1 Lorenzo Martínez, Miguel A1 Carrera, Samuel A1 Padrón Cabo, Alexis A1 Rey Eiras, Ezequiel K1 2411.06 Fisiología del Ejercicio AB Purpose: To examine the effects of 2 repeated-sprint ability (RSA) training protocols using short sprints (15 m, RSA-15) and long sprints (30 m, RSA-30) on sprinting, maneuverability, intermittent endurance, and RSA in young soccer players. Method: Thirty-one male U-18 players were randomly assigned to the RSA-15 (n = 15) and RSA-30 (n = 16) groups. The intervention programs were conducted twice a week over 6 weeks. Results: Significant improvements in 5-, 10-, and 20-m sprints, as well as the Yo-Yo test, from pretest to posttest in the RSA-15 group (8.17%, 5.92%, 5.02%, and 16.59%) and the RSA-30 group (9.21%, 7.44%, 5.64%, and 18.79%) were observed. Players in the RSA-30 group demonstrated a significant enhancement in maneuverability from pretest to posttest (4.42%). Both the RSA-15 and RSA-30 protocols resulted in enhancements in RSA, particularly in terms of total time (4.71% and 2.30%, respectively), average time (4.71% and 2.30%, respectively), and fastest time (2.97% and 2.32%, respectively). However, only the RSA-15 protocol significantly enhanced the RSA percentage of decrement (24.06%). Conclusion: The present results provide further evidence that, if the primary focus is to maximize RSA performance, RSA-15 should be preferred. When the goal is to enhance maneuverability, implementing RSA-30 is recommended over using RSA-15. PB Pediatric Exercise Science SN 15432920 YR 2024 FD 2024 LK http://hdl.handle.net/11093/7832 UL http://hdl.handle.net/11093/7832 LA eng NO Pediatric Exercise Science, ahead of print (2024) NO Ministerio de Ciencia, Innovación y Universidades | Ref. PRX22/00701 DS Investigo RD 12-feb-2025