The improved TUG execution time corroborates other studies that found improved mobility in patients with knee OA after EA.32 A recent study on transcutaneous electrical nerve stimulation (TENS) in patients with knee OA showed a decreased TUG execution time of 0.52 s in the placebo TENS group38 while, in the present study, the difference was 1.29 s in the MA group and 1.08 s in the EA group. Again, these data suggest that the reduction in the TUG execution time was not only due to the placebo effect, but the learning effect cannot be discarded.