Acquisition of EMG Signals for the Analysis of Muscle Electrical Activity in High-Performance Athletes: An Experimental Procedure

The present research work describes the experimental process carried out, thanks to the use of surface electromyography (sEMG) for the acquisition of signals from the muscles of high-performance athletes for the analysis of the electrical activity of the muscles in preparation before the university competitions of Colombia. The signals were obtained using a wireless acquisition system based on dry active electrodes when performing a series of exercises focused on the muscles that are involved in controlling the center of gravity of the human body, such as: the rectus femoris, Internal Oblique (IO), External Oblique (EO), and spinal erector. Then, a characterization of the population under study was developed depending on the type of discipline and the exercise used. The results obtained come from the visual inspection and organization of these signals by using basic preprocessing and visualization techniques in MATLAB software. Thus, a compendium is presented with the means of the RMS values and the duration of each muscular activity depending on the type of exercise, showing ranges of values from 0.2-7mV.