Logan Steele
Functional muscle testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is a diagnostic tool used by chiropractors and functional medicine practitioners to assess muscle strength and identify imbalances or dysfunctions within the body. The test involves applying gentle pressure to specific muscles while the patient resists the force, with the belief that muscle weakness is connected to issues in corresponding organs or systems. Functional muscle testing can help determine the root cause of health concerns, allowing practitioners to develop tailored treatment plans. The test is typically performed on a firm surface, such as an examination table, and each muscle or muscle group is tested multiple times to account for fatigability. The results are graded on a scale, with higher scores indicating better muscle performance and strength.
| Characteristics | Values |
|---|---|
| Definition | An auxiliary examination method used primarily in rehabilitation and neurology to determine and assess muscle strength of individual muscles or muscle groups performing one movement |
| Purpose | To uncover imbalances and dysfunctions within the body, providing insights into various health issues and guiding the course of treatment |
| Testing procedure | A codified procedure must be followed to ensure informative value. The test is repeated at least three times to understand the fatigability of the muscle. |
| Testing surface | A firm surface, preferably an examination table |
| Muscle groups tested | Shoulder abductors, elbow flexors, elbow extensors, wrist extensors, finger flexors, hand intrinsic, hip flexors, knee extensors, dorsiflexors, great toe extensors, plantar flexors |
| Muscle types | Agonists, synergists, antagonists |
| Muscle strength grading | Six basic grades, 0-5 |
| Muscle strength testing methods | Manually, functionally, mechanically |
| Muscle strength assessment | Numerical score from 0 to 5 to describe patient performance |
| Muscle testing applications | Chiropractic care, functional medicine, allergy testing, diagnosing musculoskeletal disorders |
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What You'll Learn
Functional muscle testing is used in rehabilitation and neurology
Functional muscle testing is an auxiliary examination method used primarily in rehabilitation and neurology to assess muscle strength in individual muscles or muscle groups. It is an important component of the physical exam that can reveal information about neurological deficits. The test can be used to evaluate weakness and differentiate between true weakness, imbalance, or poor endurance. This form of testing is also referred to as motor testing, muscle strength grading, or manual muscle testing.
During functional muscle testing, the agonist or primary mover muscle is identified, along with the synergist or helper muscle, and the antagonist, which has the opposite function of the agonist. An example of this relationship is seen in elbow flexion, where the biceps brachii is the agonist, the brachialis is the synergist, and the triceps brachii is the antagonist.
The test is performed on a firm surface, preferably an examination table, and each muscle or muscle group is tested at least three times to assess fatigability. The test subject is asked to demonstrate a full range of motion, performing the movement smoothly and slowly without swinging. The examiner applies resistance that is perpendicular to the direction of movement, keeping it constant and avoiding placing it across two joints.
Functional muscle testing is used by chiropractors and functional medicine practitioners to identify imbalances and dysfunctions within the body, as the muscles are connected to specific organs and systems through the nervous system. This information guides treatment plans, allowing practitioners to address the root cause of a patient's health concerns and provide targeted adjustments to restore proper function.
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It can be used to determine muscle strength
Functional muscle testing is an auxiliary examination method used primarily in rehabilitation and neurology to assess muscle strength. It is a valuable diagnostic tool that has gained popularity among chiropractors and functional medicine practitioners. The test can be used to determine muscle strength and uncover imbalances and dysfunctions within the body, providing insights into various health issues and guiding treatment. The human body has an innate ability to heal itself when properly supported, and functional muscle testing helps determine what is causing imbalances or dysfunction.
The test is performed on a firm surface, preferably an examination table, and each muscle or muscle group is tested at least three times to get a rough idea of the fatigability of the muscle. The functional muscle test has six basic grades, from 0 to 5, with 0 indicating no contraction and 5 indicating the ability to perform a movement against considerable resistance. During the test, the agonist muscle produces the desired movement, while the synergist muscle contracts to help the agonist and the antagonist muscle provides resistance.
Muscle strength can be assessed manually, functionally, or mechanically, and it is an important component of the physical exam that can reveal information about neurologic deficits. It can help differentiate true weakness from imbalance or poor endurance and is often used when there is a suspected neurologic disease or muscle imbalance/weakness. For example, testing proximal leg strength can be done by having the patient rise from a chair or step onto a chair, while testing distal strength can be done by walking on the heels and tiptoes.
Functional muscle testing can also be used to identify structural imbalances or misalignments that may cause pain or discomfort, allowing chiropractors to provide targeted adjustments to restore proper function. For instance, in a recent YouTube video, Dr. Case shared how she used muscle testing to diagnose a patient with a leaky gut, which can be caused by antibiotics, medication, or food. By placing a vial with an energetic signature of milk on it and having the patient resist, she was able to determine that milk was likely an issue for the patient and provided supplements and an elimination diet to address the leaky gut.
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It can uncover imbalances and dysfunctions within the body
Functional muscle testing, also known as Applied Kinesiology (AK) or manual muscle testing (MMT), is a valuable diagnostic tool used by chiropractors and functional medicine practitioners. It is a non-invasive assessment technique that can uncover imbalances and dysfunctions within the body, providing insights into various health issues and guiding treatment plans.
The human body is a complex system with an innate ability to heal itself when properly supported. However, it can be challenging to determine the root causes of imbalances or dysfunctions. Functional muscle testing helps address this challenge by evaluating the relationship between the body's muscles and specific organs and systems through the nervous system.
During a functional muscle test, the examiner applies gentle pressure to a specific muscle, while the patient resists the force. This test can be performed on individual muscles or muscle groups. According to Professor Vladimír Janda, it is an auxiliary examination method used primarily in rehabilitation and neurology to assess muscle strength objectively. The test should be performed smoothly and slowly, without swinging, and it is important to keep the applied resistance constant and perpendicular to the direction of movement.
By observing the patient's ability to resist the force, practitioners can identify weak or unresponsive muscles, which may indicate issues related to corresponding organs or systems. For example, weakness in a muscle associated with digestion could suggest a leaky gut, leading to targeted adjustments such as dietary changes, supplements, or other interventions to support the digestive system. Functional muscle testing can also help identify structural imbalances or misalignments causing pain or discomfort, allowing chiropractors to provide targeted adjustments to restore proper function.
In addition to providing insights into specific health issues, functional muscle testing can also help develop tailored treatment plans that address the whole person rather than merely treating symptoms. By uncovering the root causes of dysfunction, practitioners can create comprehensive care plans that effectively support the body's natural healing abilities.
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It can be used to diagnose structural, muscular, chemical, and mental ailments
Functional muscle testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is an alternative medicine practice that claims to diagnose structural, muscular, chemical, and mental ailments. The basic idea behind AK is similar to Sir Isaac Newton's Laws of Motion, which states, "for every action in nature, there is an equal and opposite reaction." AK applies this concept to the human body, suggesting that any internal issues would be accompanied by related muscle weakness. Thus, a muscle test can be performed to diagnose any underlying medical condition.
AK was started by George Goodheart, Jr. in 1964 as a system of muscle testing and therapy. A 2001 study on the kinesiology muscle test found that standard orthopedic or chiropractic muscle tests may be helpful for specific muscle-related weaknesses, but they are not useful for diagnosing medical conditions such as organic disease or mental illness. However, a 2023 study found that AK provided accurate results when used to measure sacroiliac dysfunction, with accuracy comparable to other types of tests.
Functional muscle testing involves examining individual muscles or muscle groups performing a single movement. The test must be performed on a firm surface, preferably an examination table, and each muscle or muscle group must be tested at least three times to assess the fatigability of the muscle. The test has six basic grades, from 0 to 5, with 0 indicating no signs of contraction or twitching, and 5 indicating the muscle can perform a movement against considerable resistance.
To perform the test, the examiner must respect several basic principles: testing the full range of motion, performing the movement smoothly and slowly without swinging, fixing the patient to prevent synkinesis, ensuring constant and perpendicular resistance to the direction of movement, and first demonstrating the movement to the examinee before instructing them on its exact execution.
While functional muscle testing has shown promise in diagnosing musculoskeletal disorders, the medical community has largely rejected it as a diagnostic tool for conditions in other body systems. As such, it is not recommended to rely on this technique when making important healthcare decisions until further research supports its effectiveness.
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It can be used to test for speed of force generation
Functional muscle testing is an auxiliary examination method used primarily in rehabilitation and neurology to determine and assess muscle strength. It can also be used to test for the speed of force generation. This can be done by applying an external auditory cue from a metronome, which allows the subject to gradually work up to a full speed running cadence while training the appropriate muscle activation for their sport. This trains the muscles to activate in a more functional relationship for sports.
Muscle testing can be used to uncover imbalances and dysfunctions within the body, providing insights into various health issues and guiding treatment. It is based on the principle that the body's muscles are connected to specific organs and systems through the nervous system. During muscle testing, a practitioner will apply gentle pressure to a specific muscle, while the patient resists the force. If the muscle is weak or unresponsive, this may indicate an issue related to the corresponding organ or system.
The functional muscle test takes mimic muscles into account, but it is difficult to apply the evaluation levels used for other muscles. Therefore, it is evaluated on a scale of 0-5, which compares the movement performed between healthy and disabled. The Oxford Scale is a commonly accepted method of evaluating muscle strength, but it does not account for the speed of force generation.
To address this, practitioners can consider testing lower extremity muscles in a closed kinetic chain position to assess muscle activation while in a functional position. This is especially important if a movement dysfunction is observed during a closed kinetic chain phase activity, such as running. By testing the muscles in a functional position, practitioners can gain insight into the timing of muscle activation and identify compensatory strategies that the patient may be using.
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Frequently asked questions
Functional muscle testing is an examination method used in rehabilitation and neurology to assess the strength of individual muscles or muscle groups performing a movement. It can be used to uncover imbalances and dysfunctions within the body and guide treatment.
Functional muscle testing is performed on a firm surface, usually an examination table. The test for each muscle or muscle group is repeated at least three times to understand the fatigability of the muscle. During the test, the examiner applies gentle pressure to a specific muscle, while the patient resists the force.
Functional muscle testing has six basic grades, from 0 to 5. Grade 0 indicates no signs of contraction or twitching, while Grade 5 indicates the muscle can perform a movement against considerable resistance.
Functional muscle testing can help identify structural imbalances or misalignments that may be causing pain or discomfort. By understanding the root cause of a patient's health concerns, practitioners can develop tailored treatment plans that address the whole person, rather than just treating symptoms.
