Gait speed
Four-meter gait speed was significantly improved (0.86 ± 0.22 to 0.98 ± 0.25 m/s; P = 0.004) in the exercise group, while there was no significant change in the delayed control group (0.78 ± 0.27 to 0.75 ± 0.23 m/s, P = 0.11). However, there was no group x time interaction between the two groups before and after 8 weeks (P > 0.05). Notably, 8 out of 10 patients in the exercise group increased gait speed > 0.1 m/s, whereas only one participant in the delayed control group increased gait speed by > 0.1 m/s. Five-minute gait speed, as measured by gait sensors, also increased significantly in the exercise group (0.63 ± 0.30 to 0.79 ± 0.24 m/s: P = 0.04), and there was no significant change in the control group (0.68 ± 0.24 to 0.64 ± 0.27 m/s: P = 0.13).