Associação entre o valgismo dinâmico da articulação do joelho e a altura do salto vertical em atletas jovens de basquete

Abstract

Jumping height is a major performance criterion and is an important part of the defensive offensive techniques. The muscle ability to produce more force in less time seems to be characteristic of good jumpers athletes. Changes in the lower limbs alignment can alter the individual’s capacity to generate power perform a vertical jump. Thus, the misalignment can reduce an athlete’s performance in the vertical jump. The alignment change more frequent is the presence of dynamic lower limbs valgus. This change can increase the demand placed on musculoskeletal system. The evaluation of the influence of dynamic valgus in vertical jump height may contribute to the understanding of factors that influence the execution of the sports gesture and improve athletic performance. Therefore, the aim of this study was to investigate the association of knee valgus at the vertical jump height. During preseason, 40 Basketball athletes belonging to a sport club were evaluated. The dynamic knee valgus was measured as the frontal plane projection angle of the knee (FPPAK) during the impulse. The evaluation oh vertical jump height was performed with a Jump Test contact carpet. The Regression Method of Linear Regression was used to verify the association between the two variables. No Association was observed between the vertical jump height and the knee dynamic valgus during impulse (R= 0,178). Despite this factor the knee dynamic knee valgus is a factor for overuse injuries at the knee joint and its occurrence during the impulse should be avoided. The technical training of the vertical jump can improve the athlete’s performance. More studies are necessary to verify the influence oh dynamic knee valgus in vertical jump height.