Atividade eletromigráfica dos adutores da coxa em atletas de jiu-jitsu com e sem lombalgia

Abstract

About 80% of the current population of brazilian, has symptoms of low back pain. The symptoms are caused through some biomechanical changes as muscle disorders of lower back and pelvis caused by sudden movements and/or postures and traumas, quite common in sports practices. Electromyography (EMG) is an instrument that allows to quantify and assess the electrical signal sent to the muscle at the exact moment of its contraction. Analyze the electromyographic activity of the adductor muscles of the thigh in Jiu-jitsu athletes carriers or not of low back pain. Ten athletes of Jiu-jitsu Academy-Zenith school in the city of Caruaru-PE participated of the research. Six of them had symptoms of low back pain. It was applied a social biodemographic and clinical questionnaire, and then a Disability questionnaire Roland Morris-RMDQ, for participants who had low back pain. In the last step was checked the maximum electrical signal of the contractile activity of the adductors of every individual with an electromyography, before three positions. It was seen that age, weight, height and BMI are important factors in the onset of low back pain (p <0.05) and that the mean electromyographic signal is lower in athletes who have low back pain (p> 0.05) assuming contractility has been Limited by the presence of low back pain, however none of the investigated athletes complained of the appearance of this symptomatology during the tests.