Profiling Isokinetic Strength of Shoulder Rotator Muscles in Adolescent Asymptomatic Male Volleyball Players

Sports
Claudio Andre Barbosa de LiraMarilia Santos Andrade

Abstract

The aim of the study was to describe the strength symmetry of internal and external rotator muscles and the conventional and functional strength balance ratios between these muscles in adolescent male volleyball players. Twenty-eight male adolescent volleyball players (15.5 ± 1.1 years (15⁻17 years); 73.2 ± 10.9 kg (55.3⁻100.1 kg) and 184.9 ± 8.4 cm (170⁻209 cm)) participated in this cross-sectional study. Concentric and eccentric peak torque of external and internal rotator muscles were measured, and conventional and functional strength balance ratios were calculated. The dominant limb presented significantly higher values for peak torque than the non-dominant limb of internal rotator muscles at concentric action assessed at 60°/s (48.7 ± 13.7 Nm and 43.9 ± 11.6 Nm, p = 0.01 and d value = 0.37) and at 240°/s (44.7 ± 11.2 Nm and 41.1 ± 11.0 Nm, p = 0.03 and d = 0.32). However, there was no difference in the peak torque of external rotator muscle between limbs for either angular speed. Regarding strength balance ratios, neither conventional (74.8 ± 14.3 for dominant limb and 80.1 ± 14.0 for non-dominant limb, p = 0.06 and d = 0.37) nor functional ratio (1.2 ± 0.4 for dominant limb and 1.3 ± 0.5 for non-dominant limb, p = 0.06 an...Continue Reading

References

Jan 1, 1991·The American Journal of Sports Medicine·J J KnapikL Vaughan
May 1, 1984·The American Journal of Sports Medicine·F W JobeJ Perry
Jan 1, 1983·The American Journal of Sports Medicine·F W JobeD Moynes
May 1, 1997·The Journal of Orthopaedic and Sports Physical Therapy·T S Ellenbecker, A J Mattalino
Mar 8, 2005·Annales de réadaptation et de médecine physique : revue scientifique de la Société française de rééducation fonctionnelle de réadaptation et de médecine physique·P CodineC Herisson
Aug 27, 2005·Annales de réadaptation et de médecine physique : revue scientifique de la Société française de rééducation fonctionnelle de réadaptation et de médecine physique·G GozlanA Delarque
Apr 29, 2006·Scandinavian Journal of Medicine & Science in Sports·Y YildizT A Kalyon
Apr 18, 2008·Sports Medicine·Bénédicte ForthommeJean-Louis Croisier
Jul 4, 2008·The American Journal of Sports Medicine·James E TrakisStephen J Nicholas
Nov 26, 2008·Journal of Athletic Training·Christopher D StickleyIris F Kimura
Sep 23, 2009·Journal of Athletic Training·Emmy K L Wong, Gabriel Y F Ng
May 25, 2010·Journal of Sports Sciences·Marilia Dos Santos AndradeAntonio Carlos da Silva
Nov 19, 2011·Scandinavian Journal of Medicine & Science in Sports·G MyklebustK Steffen
Jul 28, 2012·Annals of Physical and Rehabilitation Medicine·J JanP Rochcongar
Aug 28, 2012·Journal of Manipulative and Physiological Therapeutics·Mohammad A Mohseni-BandpeiHassan Shakeri
Feb 28, 2013·International Journal of Sports Medicine·P EdouardP Calmels
May 15, 2013·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Marilia Dos Santos AndradeAntonio Carlos da Silva
Nov 26, 2013·Brazilian Journal of Physical Therapy·Marília S AndradeAntonio C da Silva
Mar 29, 2014·Journal of Athletic Training·Vedran HadzicEdvin Dervisevic
Nov 27, 2014·Journal of Strength and Conditioning Research·Naryana C MascarinMarilia S Andrade
Aug 4, 2016·Journal of Sports Sciences·Jacek JurkojćKrzysztof Czapla
Sep 24, 2016·Sports Biomechanics·Dimitrios ChalloumasGeorgios Dimitrakakis
Jan 18, 2018·Journal of Athletic Training·Bénédicte ForthommeSophie Gleizes-Cervera

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Citations

Jan 20, 2021·Journal of Sport Rehabilitation·Noh ZulfikriAshril Yusof
Jan 21, 2021·Journal of Strength and Conditioning Research·Adam Virgile, Chris Bishop

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