Stimulated blood flow was higher in the ICT vs ST group with significantly increased perfusion units ( PU ) for : ACh ( 8.1 PU [ 4.6-24 .7 PU ] vs 5.3 PU [ 1.7-21 .4 PU ] , p < 0.01 ) ; SNP ( 8.1 PU [ 2.2-20 .1 PU ] vs 5.6 PU [ 2.3-19 .2 PU ] , p = 0.03 ) ; and capsaicin ( 5.0 PU [ 1.7-22 .9 PU ] vs 3.4 PU [ 1.5-8 .4 PU ] , p < 0.01 ) .