Fig. 1

Changes (mean ± SD) of maximal voluntary isometric contraction (MVC) torque (a), range of motion (ROM) (b), muscle soreness (c), and echo intensity (d) measured before (pre) and immediately after (post) the eccentric contractions exercise and then 1, 2, 3, and 5 days later in the control and EPA groups. The values of MVC torque, ROM, and echo intensity at post, 1, 2, 3, and 5 days after eccentric contractions were calculated by relative changes from baseline (100%). * p < 0.05 for the difference between groups; † p < 0.05 for the difference from the pre-exercise value in the control group, # p < 0.05 for the difference from pre-exercise value in the EPA group