Análise correlacional entre força muscular de ombro e testes funcionais de membros superiores em jovens atletas de voleibol

Abstract

Introduction: This study aimed to analyze the correlation between isometric shoulder rotator strength and upper limb functional performance in young volleyball players. Methods: This was a cross-sectional, retrospective, and comparative study. The sample consisted of 33 male athletes, aged 13 to 19 years, from two teams in the Serra Gaúcha region of Rio Grande do Sul, Brazil. Muscle performance was measured by analyzing the isometric peak torque (Medeor Tech) of the internal and external rotators of both limbs, while upper limb functional performance was determined by the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST) and the Seated Medicine Ball Throw Test (SMBT). The paired Student's t-test was used to compare muscle performance between limbs, and Pearson's correlation test was used to verify the correlations between functional variables and isometric peak torque, with a significance level of p<0.05. Results: There were no statistically significant differences in the comparison between the limbs, either in the analysis of the internal rotators or external rotators. However, in the correlational analysis between the peak isometric torque of the internal and external rotators of the dominant and non-dominant limbs and the functional tests, there was a positive and statistically significant correlation (r=0.49 to 0.70; p<0.05) in all comparisons. Conclusion: It is suggested that, due to the positive and significant correlations between muscular and functional performance, the ability to generate force is a determining factor for better performance in functional tests. [resumo fornecido pelo autor]