Muscle Testing is a science as well as an art. The objective is to determine if a muscle is functioning normally. To do this the doctor must know the anatomy and physiology of the muscle and how the body tries to recruit additional muscles to aid the one that is dysfunctioning. Precise positioning and stabilization of the patient are critical. The doctor continues developing the art of timing and pressure over years of practice.

There are four findings determined from an AK muscle test:
1) The muscle tests normal 2) The muscle tests weak 3) The muscle is hypertonic 4) The muscle is pathologically weak
The third and fourth results require additional consideration.

As a person moves about, his muscles turn on and off to provide balanced movement without injury. A dysfunctional state occurs when a muscle fails to turn off under the appropriate conditions, and when muscles are chronically turned off, they are not activating under the appropriate conditions. AK employs methods to make muscles functional again, so that they turn on and off as required by the body.

A pathologically weak muscle is one in which disease or trauma is affecting the muscle's ability to contract. A pathologically weak muscle does not respond to AK techniques, and further examination is necessary to determine the cause. It could be a severed nerve that supplies the muscle or disease of the muscle tissue, among many possibilities.