Acu needle twiddle, piston, thrust, twist etc.?
Pg 5 of this article gives a nice summary of the physiology of why it is important to manipulate the needle and in what way to manipulate the acupuncture needle.
Butts, R., Dunning, J., 2016. Peripheral and Spinal Mechanisms of Pain and Dry Needling Mediated Analgesia: A Clinical Resource Guide for Health Care Professionals. International Journal of Physical Medicine & Rehabilitation 04. doi:10.4172/2329-9096.1000327