RT info:eu-repo/semantics/article
T1 Drop jumps versus sled towing and their effects on repeated sprint ability in young basketball players
A1 Zagatto, Alessandro M.
A1 Claus, Gabriel M.
A1 Dutra, Yago M.
A1 de Poli, Rodrigo A.
A1 Lopes, Vithor H. F.
A1 Goodall, Stuart
A1 Loturco, Irineu
A1 Boullosa Álvarez, Daniel Alexandre
A2 Educacion Fisica y Deportiva
K1 Educación Física
K1 Neuromuscular Fatigue
K1 Physical Fitness
K1 Sport
K1 Post-activation Potentiation
K1 Post-activation Performance Enhancement
AB [EN] Background: The aim of the investigation was to compare the occurrence of post-activation performance enhance-ment (PAPE) after drop jumps, or heavy sled towing, and the subsequent effect on repeated sprint ability (RSA).Methods: Ten young basketball players (17 ± 1 yrs) performed, in randomized order, RSA test with changes of direc-tion after a standardized warm up followed by drop jumps, heavy sled towing, or no exercise (control condition).Neuromuscular assessments composed of two maximal voluntary contractions of the knee extensors, peripheralnerve stimulation, and surface electromyography (EMG), responses were recorded before and immediately after theRSA. The EMG signal of leg muscles during sprinting were also recorded as well as the blood lactate concentration.Results: The drop jumps improved the RSA mean time (P = 0.033), total time (P = 0.031), and slowest time (P = 0.029)compared to control condition, while heavy sled towing did not change RSA outcomes (P > 0.05). All conditionsexhibited a decrease of doublet high frequency stimulation force (pre-post measurement) (P = 0.023) and volun-tary activation (P = 0.041), evidencing the occurrence from peripheral and central components of fatigue after RSA,respectively, but no difference was evident between-conditions. There was a significantly greater EMG activity duringsprints for the biceps femoris after drop jumps, only when compared to control condition (P = 0.013).Conclusion: Repeated drop jumps were effective to induce PAPE in the form of RSA, while heavy sled towing hadno effect on RSA performance in young basketball players. Furthermore, both conditioning activities exhibited similarlevels of fatigue following the RSA protocol. Thus, drop jumps may be used as an alternative to induce PAPE and thusimprove performance during sprints in young male basketball players.
PB BioMed Central
LK https://hdl.handle.net/10612/19159
UL https://hdl.handle.net/10612/19159
NO Zagatto, A. M.; Claus, G. M.; Dutra, Y. M.; De Poli, R. A.; Lopes, V. H. F.; Goodall, S.; Loturco, I.; Boullosa Álvarez, D. A. (2022). Drop jumps versus sled towing and their effects on repeated sprint ability in young basketball players. BMC Sports Science, Medicine and Rehabilitation, 14(1), https://doi.org/10.1186/S13102-021-00395-W
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 12-jun-2024