Isokinetic Performance of Shoulder External and Internal Rotators in Adolescent Male Volleyball Athletes

  • Kelly Cristine Franceschini
  • Naíma Nissola
  • Bruno Soldatelli Zardo
  • Gerson Sacilotto Tadielo
  • Leandro Viçosa Bonetti Universidade de Caxias do Sul. City - Caxias do Sul State - Rio Grande do Sul Country - Brazil

Abstract

Title: Isokinetic performance of shoulder external and internal rotators in young male volleyball athletes.

Background: Volleyball is a sport characterized by short, intensive and explosive actions. In the performance of these repetitive movements, the shoulder joint receives the largest load. Therefore, a detailed assessment of biomechanics and muscle performance is fundamental in the evaluation, treatment and in prevention of shoulder injuries in volleyball athletes.

Methods and Findings: Information from a database concerning the isokinetic evaluation of the shoulder’s external and internal rotator muscles at the 60°/s and 180°/s angular velocities from 20 male volleyball athletes under 17 years of age was assessed. At a velocity of 60°/s the average values for internal rotators on the non-dominant limb were significantly smaller than those of the dominant limb, and at a velocity of 180°/s both the internal and external rotators average values for the non-dominant limb were significantly smaller than those for the dominant limb. For the external-internal rotator ratio analyses, there was no significant difference between the limbs.

Conclusions: In conclusion, the unilateral demands during typical movements in volleyball resulted in higher peak torque values for the dominant limb in comparison to that of the non-dominant limb. For the external-internal rotators, no relevant differences were found between limbs, and the average values were within the parameters of normality.  

Published
Jul 14, 2016
How to Cite
FRANCESCHINI, Kelly Cristine et al. Isokinetic Performance of Shoulder External and Internal Rotators in Adolescent Male Volleyball Athletes. International Archives of Medicine, [S.l.], v. 9, july 2016. ISSN 1755-7682. Available at: <http://imed.pub/ojs/index.php/iam/article/view/1670>. Date accessed: 21 sep. 2019. doi: http://dx.doi.org/10.3823/2011.
Section
Sports Medicine

Keywords

sports, muscle strength, torque