Fig. 3From: Bioelectrical activity of the pelvic floor muscles during synchronous whole-body vibration – a randomized controlled studyInter-trial comparison of the normalized variability of pelvic floor muscle sEMG signal amplitude (%MVC) in the study and control groups. Horizontal bars with vertical dashes indicate statistically significant differences between duration of the trial at the same peak-to-peak displacement and frequency of vibration (p < 0.05)Back to article page