Figure 3. Elastography parameters. A Stiffness erector spinae muscle. B Stiffness extramuscular connective tissue. C Regression model. t0, baseline; t24, 24 h after exercise; t48, 48 h after exercise. † Significant time differences to t0 at p < .05 level. * Significant group differences at p < .05 level. Error bars show the 95% confidence intervall.