As a Chiropractor, one of my main techniques is Applied Kinesiology. While in Chiropractic school, I obtained my 100 hour certification in this technique. According to the International College of Applied Kinesiology (ICAK):
Applied Kinesiology (AK) is a system that evaluates structural, chemical and mental aspects of health using manual muscle testing combined with other standard methods of diagnosis… The combined terms “applied” and “kinesiology” describe the basis of this system, which is the use of manual muscle testing to evaluate body function through the dynamics of the musculoskeletal system
The basis of Applied Kinesiology is in the manual muscle test.
When working with patients, I use the muscles of the body as indicators to help me decide where there is stress in the system and what I can do to help support the nervous system and the musculoskeletal system. A manual muscle test involves isolating a specific muscle in the body- like the deltoid or the latissimus dorsi, and checking to make sure that it is “turned on” or working how it should.
This can seem mystical and magical, but all boils down to basic neurology. Can the brain find that particular muscle and tell it to do a specific task? If it can’t, why not? According to the ICAK:
Manual muscle tests evaluate the ability of the nervous system to adapt the muscle to meet the changing pressure of the examiner’s test. This requires that the examiner be trained in the anatomy, physiology, and neurology of muscle function. The action of the muscle being tested, as well as the role of synergistic muscles, must be understood. Manual muscle testing is both a science and an art. To achieve accurate results, muscle tests must be performed according to a precise testing protocol. The following factors must be carefully considered when testing muscles in clinical and research settings:
• Proper positioning so the test muscle is the prime mover
• Adequate stabilization of regional anatomy
• Observation of the manner in which the patient or subject assumes and maintains the test position
• Observation of the manner in which the patient or subject performs the test
• Consistent timing, pressure, and position
• Avoidance of preconceived impressions regarding the test outcome
• Nonpainful contacts – nonpainful execution of the test
• Contraindications due to age, debilitative disease, acute pain, and local pathology or inflammation
What all of that means is this: It is important that a practitioner using manual muscle testing (MMT) is able to be consistent, specific, and observant when evaluating the human body. By ensuring that all muscle tests that are performed follow these basic guidelines, the results of a muscle test should be clinically useful. (ie: They should help me to tell what is going on with my patient. )
For example, when there is severe low back pain, are the muscles in the pelvis and lower back properly supporting the spine? If not, why not? How can we turn them on and make sure that they are doing their job?
In 2007, a paper was published in the Journal of Chiropractic and Osteopathy that evaluates the reliability and validity of the MMT through a review of the literature. This paper found that there is significant evidence to support the clinical use of the manual muscle test in practice; however, the experience of the provider and the adherence to specific guidelines for muscle testing is important. This review suggests that muscle testing is a useful way to evaluate the neuromusculoskeletal system, but it will be important to continue studying MMT and to incorporate randomized controlled trials, if possible.