Most manual techniques in gentle and repetitive manipulation; low-frequency, high-intensity EA and TENS.
aLow-frequency, high-intensity EA and TENS is thought to dominantly activates myelinated fibers (Aβ and Aδ), whereas high-frequency EA mainly activate small-diameter myelinated Aδ fibers and unmyelinated C fibers [133, 134].
bEA, electroacupuncture; TENS, transcutaneous electrical nerve stimulation.