Presenter Laura O. Carmona - UNISUAM, Rio de Janeiro, Brasil (Programa de Pós-Graduação em Ciências da Reabilitação) - BR
Paula B.R. Santos - UNISUAM, Rio de Janeiro, Brasil (Programa de Pós-Graduação em Ciências da Reabilitação) - BR
Patrícia S. Vigário - UNISUAM, Rio de Janeiro, Brasil (Programa de Pós-Graduação em Ciências da Reabilitação) - BR
Thiago Lemos - UNISUAM, Rio de Janeiro, Brasil (Programa de Pós-Graduação em Ciências da Reabilitação) - BR
Background: Trunk function is a very important aspect of adapted wheelchair sports, because it potentially helps the athlete at various sports-specific activities. For example, it has
been demonstrated that a higher arc trunk movement allows greater acceleration capacity at the beginning of a sprint. In wheelchair rugby (WR), the trunk function is an important part of athletes’
classification. However, there was no evidence that higher trunk function is associated with improved performance in this modality. The aim of this study was to investigate the association between the
trunk function and sports-specific skills performance of WR athletes.
Methods: Fifteen male athletes from Brazilian national team (n=7) and a local WR team (n=8) were evaluated. Trunk function was assessed in terms of limits of stability (LS) in the
seated position. The athletes were positioned over a force platform suspended on a woodblock and instructed to lean their bodies as far as possible in eight directions indicated on a computer screen.
Center of pressure (COP) coordinates were calculated from the ground reaction forces acquired with the force platform. LS were computed as the log-transformed area of 68% confidence ellipse adjusted
to maximal COP excursion achieved for the eight directions. For the assessment of sports-specific skills performance the Beck Battery for Quad Rugby Skills Test (Beck Battery) was applied. Three
trials were performed for each one of the five tasks of the Beck Battery, and the best performance was considered for further analysis. Person correlation coefficient (R) was used to determine the
association between LS and Beck Battery scores. The 95% confidence interval (CI) of R was estimated through bootstrapping. Statistical significant was set at P<0.05.
Results: Pearson correlation analysis did not result in any significant association between LS and Beck Battery scores (all P<0.1). Nevertheless, a qualitative analysis reveals that
the association between LS and pass for accuracy scores was moderate (R=0.43, 95% CI of 0.15-0.69), ranged from small to large according to Cohen’s scale.
Conclusions: Sport-specific skills performance are not significant associated with seated limits of stability of wheelchair rugby players. A moderate relationship can be suggested
only for the pass for accuracy test. Our results suggest that trunk function have minor impact on wheelchair rugby performance.