Fig. 4
From: Using ultrasound to assess the thickness of the transversus abdominis in a sling exercise
TrA thickness. TrA thickness (in pixel units pxu, see data analysis) on the three different conditions (resting condition = RC, sling condition = SC, abdominal press condition = APC). The bars represent the mean pxu for each measurement day on the different conditions (numerical values at the bottom of the bars). The gray boxes with the black frame represent the mean values over the three measurement days (numerical values over the gray boxes). The vertical lines in the bars indicate the standard deviation. ***: α < 0.001 indicates a (highly) significant difference between the mean values over the three measurement days (gray boxes with black frames)