Fig. 3
From: Musculoskeletal application and validation of speckle-tracking ultrasonography
Results of 2D longitudinal supraspinatus muscle strain. a, Muscle strain (%) correlated negatively with increasing load (%) (95% CI: -0.87% to − 0.58%; Pearson correlation coefficient). b, The mean muscle strain of the normal supraspinatus muscle of ten subjects at different isometric load conditions (40, 60, and 80%) demonstrating significantly increased strain rate with increasing load condition (One-way ANOVA p < 0.0001, F(2,84) = 34.7). Error bars represent s.d. (n = 10, four independent measurements/load condition). ***p < 0.001; **** p < 0.0001