Activator Methods: Evolved from nearly 40 years of empirical study and 15 years of clinical research, the Activator Methods Chiropractic Technique (AMCT) uses the Activator Adjusting Instrument to give consistent low-force, high-speed chiropractic adjustments. This is a hand-held, spring-loaded instrument-based manipulation/adjustment protocol. Instead of the manipulating/adjusting forces being delivered by hand, force is generated with the small appliance that delivers a lighter, but quicker, thrust than can be delivered by hand. Activator can be used as a primary treatment protocol for all patients or a selective method for patients who may not desire manual manipulation/adjustment or where manual manipulation/adjustment may be contraindicated.