DISCUSSION
This study aimed to test the immediate effects of a
single session of MA or EA in patients with knee OA.
There was a significant reduction in pain intensity and
in the execution time of the TUG test in both of the
groups. However, there was no significant increase in
the muscle strength or the PPT. In addition, there was
no significant difference between the groups for all
the outcomes evaluated.
The reduction in the pain intensity after one session
of MA can be explained by the release of neurotransmitters
such as endorphins and monoamines (serotonin
and noradrenaline) which block pain
messages.12 13 37 The improvement resulting from EA