Figure 3 Supraspinatus tendinosis. Effects of glyceryl trinitrate (GTN, n = 28) 1.25 mg/d via transdermal patch versus rehabilitation alone (placebo, n = 29) on shoulder pain with activities (A) and on dynamometer‐measured supraspinatus force (B); a between‐groups comparison of means and the standard error of the mean. Significant differences: *p<0.05, **p<0.01. ⁺⁺p<0.01, ⁺⁺⁺p<0.001 compared with baseline using student's paired t tests. (Adapted from Paoloni et al²⁰).