Blasco, E., Lizondo, V., Berbel, L., & Martín, J. (2017). Study with surface electromyography, borg scale and rom upper trapezius, deltoid of the three portions (clavicular, acromial, spinal) and the latissimus dorsi muscle, before and after using a muscle activation technique (mat). Journal of Human Sport and Exercise, 11(2), 329–337. https://doi.org/10.14198/jhse.2016.112.06