Fig. 5From: Is the cross-over effect of a unilateral high-intensity leg extension influenced by the sex of the participants?Normalized surface electromyographic (sEMG) values for both the male group and the female group of the vastus lateralis (blue), the vastus medialis (white), and the rectus femoris (red) of the exercising limb (EL) for phase 1 (plain fill-in) and phase 2 (dashed fill-in). Bars represent group mean values. Error bars are the standard error of the meanBack to article page