Muscle monitoring (muscle testing)
These are two names for the same thing and can be interchangeable.
Muscle monitoring is the principal tool of kinesiology.
A limb is placed so that one of its muscles is in a contracted position. The kinesiologist applies pressure to that muscle and the client is asked to match the pressure. This is not a test of the strength of the muscle but of how the muscle responds to the stimulus of the added pressure. The muscle will either remain in contraction or will unlock. At no time should the client experience pain or discomfort with the testing. How the muscle responds gives the kinesiologist feedback and this is used to determine what the priority stresses are and the best way to address them.