Correlation analyses of brachial artery diameters and FMD measurements. (A) Pre- and post-exercise brachial artery diameters were significantly correlated (r = 0.942; P <0.001). (B) Pre-exercise diameter and pre-exercise FMD showed significant correlation (r = −0.518; P <0.001). (C) Pre-exercise FMD and post-exercise FMD (r = 0.450; P <0.001), and (D) pre-exercise diameter and post-exercise FMD (r = −0.301; P = 0.009) were also significantly correlated. FMD = flow-mediated dilatation.