Isokinetic performance of U-13 futsal athletes after application of the FIFA 11+ protocol

• Autor(a) principal: Soares, Abeli Tuane dos Santos
• Data de Publicação: 2019
• Outros Autores: Teixeira, Lilian Pinto, Lara, Simone
• Tipo de documento: Artigo
• Idioma: eng; por
• Título da fonte: Fisioterapia e Pesquisa
• Texto Completo: https://www.revistas.usp.br/fpusp/article/view/157182
• topic: Muscle strength; Knee; Soccer; Athletes; Fuerza Muscular; Rodilla; Fútbol; Atletas; Força Muscular; Joelho; Futebol; Atletas

This study’s objective was to evaluate U-13 futsal players’ knee flexor and extensor muscles isokinetic performance, after a 18-week application of the FIFA 11+ protocol. Participants were male futsal players (n = 14) with a mean age of 12.58 ± 0.66 years. The force evaluation was performed pre- and post-intervention using the Biodex System Pro 4™ isokinetic dynamometer, at speeds of 60°/s, 180°/s, and 300°/s. The FIFA 11+ protocol was applied before the start of each regular training, twice a week, for 18 weeks, with an approximate duration of 25 minutes. In the pre-intervention analysis, a higher than 10% difference between dominant and non-dominant limbs was found in flexors’ and extensors’ peak torque, at the 60°/s and 180°/s speeds, respectively. In the postintervention analysis, no such asymmetries were found. Post-intervention, there was an increase in the agonistantagonist ratio on the dominant side, at the 60°/s speed, approaching the ideal value proposed in the literature (60%). There was also an increase in athletes’ isokinetic performance. The 18-week application of the FIFA 11+ protocol promoted an improvement in the isokinetic performance of the knee’s extensor and flexor muscles, and decreased the muscular asymmetries between the limbs of young futsal athletes.