Shoulder functional ratio in elite junior tennis players

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
Michele Forgiarini SaccolAntonio Carlos da Silva

Abstract

To evaluate shoulder rotation strength and compare the functional ratio between shoulders of elite junior tennis players. This cross-sectional study evaluated muscular rotation performance of 40 junior tennis players (26 male and 14 female) with an isokinetic dynamometer. Strength variables of external (ER) and internal rotators (IR) in concentric and eccentric modes were considered. For the peak torque functional ratio, the eccentric strength of the ER and the concentric strength of the IR were calculated. All variables related to IR were significantly higher on the dominant compared to the non-dominant side in males and females (p<0.05), but only boys exhibited this dominance effect in ER (p<0.05 and p<0.001). Regarding functional ratios, they were significantly lower for the dominant shoulder (p<0.001) and below 1.00 for both groups, indicating that the eccentric strength of the ER was not greater than the concentric strength of the IR. Elite junior tennis players without shoulder injury have shoulder rotation muscle strength imbalances that alter the normal functional ratio between rotator cuff muscles. Although these differences do not seem to affect the athletic performance, detection and prevention with exercise programs...Continue Reading

References

Jul 1, 1992·The American Journal of Sports Medicine·T J ChandlerB Pace
Jan 1, 1988·The American Journal of Sports Medicine·T S EllenbeckerM J Rowinski
Mar 1, 1997·The Journal of Orthopaedic and Sports Physical Therapy·C R ScovilleP D Stoneman
Aug 10, 2002·The Journal of Orthopaedic and Sports Physical Therapy·Gabriel Y F Ng, Patrick C W Lam
Aug 7, 2004·The Journal of Orthopaedic and Sports Physical Therapy·Andrea StanleyN Kathryn Briffa
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 25, 2006·British Journal of Sports Medicine·B Elliott
Apr 25, 2006·British Journal of Sports Medicine·H van der Hoeven, W B Kibler
Apr 29, 2006·Scandinavian Journal of Medicine & Science in Sports·Y YildizT A Kalyon
Jan 1, 1991·The Journal of Orthopaedic and Sports Physical Therapy·L R Ng, J S Kramer

❮ Previous
Next ❯

Citations

May 25, 2013·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Jo EvershedRebecca Mellifont
Mar 29, 2014·Journal of Athletic Training·Vedran HadzicEdvin Dervisevic
Dec 26, 2015·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Ann M CoolsFredrik R Johansson
Jun 7, 2011·Journal of Science and Medicine in Sport·Gisele G ZancaStela M Mattiello-Rosa
Jan 21, 2012·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Roland JulienneDamien Davenne
May 24, 2012·Scandinavian Journal of Medicine & Science in Sports·C CouppéS P Magnusson
Sep 12, 2015·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Michele Forgiarini SaccolVivian Lima de Souza
Jan 16, 2015·Human Movement Science·Pedro G MorouçoMário C Marques
Nov 12, 2016·Journal of Athletic Training·Dorien BormsAnn M Cools
Jan 8, 2016·Orthopaedic Journal of Sports Medicine·Omid AlizadehkhaiyatSimon P Frostick
Jan 13, 2018·The Journal of Sports Medicine and Physical Fitness·Thierry WeisslandAntoine Gabrion
May 17, 2019·Journal of Sport Rehabilitation·Bin ChenWenxin Niu
Apr 30, 2017·Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine·Robert van CingelBart Staal
Apr 23, 2020·International Journal of Environmental Research and Public Health·Afxentios KekelekisBeat Knechtle
Jan 21, 2021·Journal of Strength and Conditioning Research·Adam Virgile, Chris Bishop
Jul 25, 2021·Journal of Sport Rehabilitation·Nazli Busra CigerciogluGul Baltaci

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.