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PECTORALIS MAJOR MUSCLE STUDY USING MR , AND ELETROMIOGRAPHY IN WEIGHTLIFITING ATHLETES

Grant number: 14/04180-6
Support Opportunities:Regular Research Grants
Start date: June 01, 2016
End date: May 31, 2018
Field of knowledge:Health Sciences - Medicine
Principal Investigator:Benno Ejnisman
Grantee:Benno Ejnisman
Host Institution: Escola Paulista de Medicina (EPM). Universidade Federal de São Paulo (UNIFESP). Campus São Paulo. São Paulo , SP, Brazil
Associated researchers: Alberto de Castro Pochini

Abstract

Rupture of the pectoralis major muscle (PMM) has ocurred in proportion to the number of individuals who are joining gyms and participating in weightlifting events. In many cases, lackof appropriate guidance regarding personal limitations and abuse of anabolic steroids hascaused these athletes to sustain total rupture of the PMM .Failure to swiftly recognize the lesion on the part of healthcare professionals andinsufficient guidance given to these athletes with respect to surgical correction have led, in mostof these cases, to chronic lesions and visible retraction of the rupturedPMM. Although some authors have reported better functional results from surgery during acuteand chronic stages, we believe that PMM ruptures should be treated similarly to ruptures of theAchilles tendon or the distal biceps brachii. Therefore, if patients are treated sooner, they have ahigher chance of returning to the same level of physical performance as before the rupture .Early recognition of the clinical signs of PMM rupture by orthopedists, physiotherapists,and physical trainers may prove to be critical for patient access to treatment, if desired, whilethe injury is still in the acute phase.The goal of our study was to confirm the results of our earlier study of the superiority of surgical to conservative treatment of pectoralis major ruptures, in a larger group of patients using the Bak criteria.Methods: 50 patients will be studied, with 30 injuries and 20 controls with elastography and magnetic resonance imaging to assess respectively feature elastic tendon remaining contralateral and chronic tendinopathy. At phase 2 30 Patients will also undergo electromyography to compare muscle activation during the bench press (twisting of the fibers at 90 degrees) (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BENNO EJNISMAN; CARLOS VICENTE ANDREOLI; PAULO SANTORO BELANGERO; WILLIAM RICADO KOMATSU; DEBORA CRISTINA HIPOLIDE; ALBERTO DE CASTRO POCHINI. Eletromiografia do músculo peitoral maior após reconstrução cirúrgica da ruptura crônica do tendão. Rev. bras. ortop., v. 56, n. 1, p. 31-35, . (14/04180-6)