Figure 11.

The MF slope of some muscles during the four rehabilitation exercises. The horizontal axis represents the muscles of left side and right side; the vertical coordinate represents the median frequency slope. (a) showed the results of prone bridge; (b) showed the results of supine bridge; (c) showed the results of unilateral bridge (lifting the right leg); and (d) showed the results of bird-dog exercise (lifting the left arm and right leg). “∗” represents that there was significant difference between the two muscles.