Fig. 6: Evaluation of muscle strength after a 6-week rehabilitation program.

a The maximum torque of 10 subjects within 6 weeks. Positive values represent lifting torque by quadriceps and negative values denote retracting torque by hamstrings. b The maximum torque of 10 post-surgical subjects in one repetition in the first session. c The maximum torque of 10 post-surgical subjects in the last session. d Comparison of averaged maximum torque in the first and last session (n = 10). The left and right bars indicate torques in the first and last training sessions, respectively, with red bars representing lifting and blue bars for retracting. The percentage values indicate the increase from the first to the last session. The red dots, lines, and bars represent quadriceps muscle strength, while the blue dots, lines, and bars represent hamstring muscle strength. Data are presented as mean ± SD. *Refers to p-value < 0.05 by two-tail t-test. Source data are provided as a Source Data file.