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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Energy Systems Contribution in the Running-based Anaerobic Sprint Test

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Autor(es):
Milioni, Fabio ; Zagatto, Alessandro Moura ; Barbieri, Ricardo Augusto ; Andrade, Vitor Luiz ; dos Santos, Julio Wilson ; Gobatto, Claudio Alexandre ; da Silva, Adelino S. R. ; Pereira Santiago, Paulo Roberto ; Papoti, Marcelo
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 38, n. 3, p. 226-232, MAR 2017.
Citações Web of Science: 10
Resumo

The aims of the present study were to verify the contributions of the energy systems during repeated sprints with a short recovery time and the associations of the time-and power-performance of repeated sprints with energetic contributions and aerobic and anaerobic variables. 13 healthy men performed the running-based anaerobic sprint test (RAST) followed by an incremental protocol for lactate minimum intensity determination. During the RAST, the net energy system was estimated using the oxygen consumption and the blood lactate responses. The relative contributions of oxidative phosphorylation, glycolytic, and phosphagen pathways were 38, 34, and 28 %, respectively. The contribution of the oxidative pathway increased significantly during RAST especially from the third sprint, at the same time that power-and time-performances decreases significantly. The phosphagen pathway was associated with power-performance (peak power = 432 +/- 107 W, r = 0.65; mean power = 325 +/- 80 W, r = 0.65; minimum power = 241 +/- 77 W, r = 0.57; force impulse = 1 846 +/- 478 N . s, r = 0.74; p < 0.05). The time-performance (total time = 37.9 +/- 2.5 s; best time = 5.7 +/- 0.4 s; mean time = 6.3 +/- 0.4 s; worst time = 7.0 +/- 0.6 s) was significantly correlated with the oxidative phosphorylation pathway (0.57 < r > 0.65; p < 0.05) and glycolytic pathway (0.57 < r > 0.58; p < 0.05). The oxidative pathway appears to play an important role in better recovery between sprints, and the continued use of the glycolytic metabolic pathway seems to decrease sprint performances. Finally, the phosphagen pathway was linked to power production/maintenance. (AU)

Processo FAPESP: 16/02683-6 - Influência da suplementação de beta-alanina associado ao treinamento intervalado de alta intensidade no desempenho de sprints repetidos.
Beneficiário:Fabio Milioni
Modalidade de apoio: Bolsas no Brasil - Doutorado