Fig. 2. Comparison of ΔO2 cost between experimental and control groups. (A) Difference from post-treatment to pre- treatment states (Δ) in the O2 cost (mL/kg·m) after treadmill training had no significant differences in the parameter during treadmill walking between experimental and control groups. (B) However, the experimental group showed sig- nificantly lower ΔO2 cost, as compared with the control group during overground walking (*p