Effect of the rest interval duration between contractions on muscle fatigue

• Autor(a) principal: Nogueira, Daniel V.
• Data de Publicação: 2012
• Outros Autores: Silva, Sidney B., de Abreu, Luiz Carlos, Valenti, Vitor E. [UNESP], Fujimori, Mahmi, de Mello Monteiro, Carlos Bandeira, Tortoza, Charli, Ribeiro, Wellington, Lazo-Osorio, Rodrigo A., Tierra-Criollo, Carlos J.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1186/1475-925X-11-89; http://hdl.handle.net/11449/42478
• topic: Fatigue; Elbow; Muscles; Torque; Rest interval

Background: We aimed to investigate the effect of rest interval, between successive contractions, on muscular fatigue.Methods: Eighteen subjects performed elbow flexion and extension (30 repetitions) on an isokinetic dynamometer with 80 degrees of range of motion. The flexion velocity was 120 degrees/s, while for elbow extension we used 5 different velocities (30, 75, 120, 240, 360 degrees/s), producing 5 different rest intervals (2.89, 1.28, 0.85, 0.57 and 0.54 s).Results: We observed that when the rest interval was 2.89 s there was a reduction in fatigue. on the other hand, when the rest interval was 0.54 s the fatigue was increased.Conclusions: When the resting time was lower (0.54 s) the decline of work in the flexor muscle group was higher compared with different rest interval duration.