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.