Articulate torque and electromyographic activity of biceps femoris and semitendinosus muscles during isokinetic knee flexion movements in soccer athletes

• Autor(a) principal: Bassi Rodrigues, Carlos Eduardo
• Data de Publicação: 2007
• Outros Autores: de Moraes, Antonio Carlos, Hideki Okano, Alexandre, Bodnariuc Fontes, Eduardo, Altimari, Leandro Ricardo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Brasileira de Cineantropometria & Desempenho Humano (Online)
• Texto Completo: https://periodicos.ufsc.br/index.php/rbcdh/article/view/4082

The objective of the present study was to analyze the articulate torque (TO) and the electromyographic activity (EMG) of soccer athlete’s long head Biceps Femoris (BF) and Semitendinosus (ST) muscles during isokinetic knee fl exion movements (concentric-CON and eccentric-ECC actions) at differing velocities, carried out in the ventral decubitus position. Fourteen soccer players aged 19 and 20 years old (71.2 ± 6.5 kg, 176.6 ± 6.4 cm) were enrolled from the Associação Atlética Ponte Preta under- 20 team. They followed a protocol specifying 5 repetitions of fl exion (CON and ECC action) of the knee at three velocities (60, 180 and 300º/s) at random. The recovery interval between series adopted was 3 minutes. EMG Activity was recorded using surface electrodes and data were expressed in terms of root mean squares (RMS). Statistical analysis employed analysis of variance (Friedman test) for repeated measures followed by the Wilcoxon test when necessary, with the level of signifi cance set at P