Table 2.

Mean Area Results.

	p Value “Normal” vs. “Active”	p Value “Normal” vs. “Normal in Symptomatic”	p Value “Normal in Symptomatic” vs. “Active”
Whole ROI	0.028*	0.097	0.357
Muscle belly	0.123	0.030*	0.302
Fascial border	0.009*	0.155	0.138

ROI = region of interest. A statistical test (Mann–Whitney U test) was performed between mean areas (with entropy < 4) measured from healthy control subjects and active subjects. “Normal” sites have statistically significant (p < 0.05) smaller regions with entropy < 4 than “active” sites when the whole ROI or only the fascial border are analyzed. Mean area evaluated in the muscle belly is significantly smaller in “normal” sites than in “normal in symptomatic” sites.