
Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is an alternative medicine practice that claims to effectively diagnose structural, muscular, chemical, and mental ailments. During a muscle response test, a practitioner will apply force to a specific muscle or group of muscles and ask the patient to resist this force. The practitioner will then evaluate the tension in the muscle, as well as the smoothness of the response, to determine whether the muscle is strong or weak. While some studies have found applied kinesiology to be effective in certain cases, it has largely been rejected by the medical community as a diagnostic tool, and there is skepticism about its efficacy.
| Characteristics | Values |
|---|---|
| Other Names | Applied Kinesiology (AK), Manual Muscle Testing (MMT) |
| Developed By | George Goodheart Jr. in 1964 |
| Purpose | To diagnose structural, muscular, chemical, and mental ailments through weak muscles |
| Evaluation Method | Subjective evaluation of muscle tension and smoothness of response |
| Muscle Strength | Weak or strong muscles do not indicate overall strength but rather normal functioning or inhibition |
| Testing Method | Practitioner applies force to specific muscles and evaluates tension as patient resists |
| Common Tests | Delta test, nutrient testing, NET technique |
| Applications | Locating imbalances, identifying allergies and sensitivities, diagnosing musculoskeletal disorders |
| Effectiveness | Limited scientific evidence, rejected by medical community for conditions outside musculoskeletal disorders |
| Use Cases | Physical therapy, sports medicine, chiropractic interventions |
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What You'll Learn
- Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is an alternative medicine practice
- AK defines a strong muscle as one that functions properly and a weak muscle as one whose normal functioning is inhibited
- Muscle response testing can be used to diagnose structural, muscular, chemical, and mental ailments through weak muscles
- Nutrient testing is a type of muscle response testing used to test for allergies
- Muscle response testing can be used to diagnose a range of issues, including gut problems and musculoskeletal structure

Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is an alternative medicine practice
AK defines a strong muscle as one that functions properly, and a weak muscle as one whose normal functioning is inhibited. During muscle response testing, a practitioner will apply force to a specific muscle or group of muscles and ask the patient to resist this force. The practitioner then evaluates the tension in the muscle and the smoothness of the response. One common test is the delta test, where the practitioner pulls the patient's arm downward and the patient resists.
Muscle response testing can also be used to identify allergies and other types of sensitivities. Nutrient testing, for example, is used to examine the response of a patient's muscles to different chemicals. Gustatory and olfactory stimulation are said to alter the outcome of a manual muscle test, with previously weak muscles being strengthened by the application of the correct nutritional supplement.
While muscle response testing is used by some as a diagnostic tool, it is not supported by mainstream medical theory. The medical community has mostly rejected the idea of AK as a diagnostic tool for conditions outside of musculoskeletal disorders. A 2001 study found that muscle tests were ineffective in diagnosing allergies, and another review of several scientific studies concluded that AK procedures lacked validity as diagnostic tests.
Despite the skepticism and lack of scientific evidence, some practitioners continue to use muscle response testing as a tool to provide an accurate diagnosis and effective treatment plan. It is often used in conjunction with other diagnostic methods, such as clinical history, physical exams, and laboratory tests.
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AK defines a strong muscle as one that functions properly and a weak muscle as one whose normal functioning is inhibited
Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is a technique used to test muscle strength and diagnose structural, muscular, chemical, and mental ailments through weak muscles. It was first developed by George Goodheart Jr. in 1964 as an alternative medicine technique.
AK defines a strong muscle as one that functions properly, and a weak muscle as one whose normal functioning is inhibited. It is important to note that this definition of "strong" and "weak" does not refer to a person's overall strength or ability to exert force. Instead, it is based on the evaluation of muscle tension and the smoothness of the response when the practitioner applies force to a specific muscle or group of muscles and the patient resists.
For example, in the delta test, the practitioner pulls the patient's arm downward, and the patient resists. A smooth response with appropriate tension indicates a strong muscle, while a response that is not appropriate or smooth is considered a weak response. These differences in muscle response are believed to be indicative of various stresses and imbalances in the body, such as chemical, structural, or mental imbalances.
While AK has its supporters, it is important to note that it is not widely accepted by the medical community as a diagnostic tool for conditions beyond musculoskeletal disorders. Some studies have questioned its reliability and accuracy, and it has been criticized as pseudoscience by some skeptics. As such, it is not recommended to solely rely on AK when making important healthcare decisions until further research provides more conclusive evidence of its effectiveness.
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Muscle response testing can be used to diagnose structural, muscular, chemical, and mental ailments through weak muscles
Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is a technique used to diagnose structural, muscular, chemical, and mental ailments through weak muscles. It was developed in 1964 by chiropractor George Goodheart Jr., who founded applied kinesiology, which is now often used in sports medicine. Goodheart believed that muscles could be a communication gateway to the nervous system.
During a muscle response test, a practitioner will apply force to a specific muscle or group of muscles and ask the patient to resist. The practitioner will then evaluate the tension in the muscle and the smoothness of the response. A smooth response is sometimes referred to as a "strong muscle," while a response that is not appropriate is called a "weak response." The results of a muscle response test are considered along with other diagnostic information such as clinical history, physical exam findings, and laboratory tests to make an accurate diagnosis and implement the correct treatment.
One common test is the delta test, where the practitioner pulls the patient's arm downward, and the patient resists. Muscle response testing can also be used to identify allergies and other sensitivities. For example, during a test for a food intolerance, a practitioner may place a vial with a trace of the food on or near the patient's body and ask them to push against their hand with a raised arm. If there is no issue, the push will be strong, but if there is an issue, it will be startlingly weak.
While muscle response testing has been found to be more accurate than intuition and chance in some applications, such as distinguishing lies from truths, it has limited support in the medical community as a diagnostic tool for conditions outside of the musculoskeletal system. A 2001 study found that muscle tests were ineffective in diagnosing medical conditions such as organic disease or mental illness. However, a 2023 study found that applied kinesiology provided accurate results when used to measure sacroiliac dysfunction.
In conclusion, muscle response testing can be a useful tool for diagnosing structural, muscular, chemical, and mental ailments through weak muscles, but it should be used in conjunction with other diagnostic methods and not as the sole means of diagnosis.
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Nutrient testing is a type of muscle response testing used to test for allergies
Muscle response 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. It was first developed by George Goodheart Jr. in 1964. The basic idea behind AK is that any internal issues are accompanied by related muscle weakness.
During a muscle response test, a practitioner will apply force to a specific muscle or group of muscles and ask the patient to resist this force. The practitioner will then evaluate the tension in the muscle and the smoothness of the response. One common test is the delta test, where the practitioner pulls the patient's arm downward, and the patient resists.
While muscle response testing can be used to identify allergies and other sensitivities, it is not a stand-alone diagnostic tool. It should be used alongside proven diagnostic methods and traditional allergy tests. The effectiveness of muscle testing also depends on the skills of the individual practitioner.
Some studies have questioned the validity of AK procedures as diagnostic tests, and the medical community has mostly rejected the idea of AK as a diagnostic tool for conditions outside of musculoskeletal disorders. It is not advised to rely solely on this technique when making important healthcare decisions.
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Muscle response testing can be used to diagnose a range of issues, including gut problems and musculoskeletal structure
Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is a diagnostic tool that uses the body's nervous system to uncover hidden problems. The human body is capable of communicating through the turning on or off of muscles, which is essentially the language of the central nervous system (CNS). By testing muscles, a trained doctor can access a lot of information about the patient that cannot be obtained through other means.
AK defines a strong muscle as one that functions properly and a weak muscle as one whose normal functioning is inhibited. During muscle response testing, a practitioner will apply force to a specific muscle or group of muscles and ask the patient to resist this force. As the patient resists, the practitioner evaluates the tension in the muscle and the smoothness of the response. One common test, the delta test, is performed by having the practitioner pull the patient's arm downward and having the patient resist.
Musculoskeletal complaints are one of the top reasons for doctor visits, constituting over half of chronic medical conditions in the United States. Various types of imaging tests, such as X-rays, CT scans, and MRIs, can help doctors diagnose musculoskeletal disorders. Laboratory tests, such as blood tests to measure inflammation and muscle damage, are also often helpful in diagnosing these disorders. Muscle response testing can be used as a complementary diagnostic tool to identify structural imbalances or misalignments that may be causing pain or discomfort, allowing practitioners to provide targeted adjustments to restore proper function.
While muscle response testing has shown promise in diagnosing musculoskeletal disorders, it is important to note that the medical community has mostly rejected the idea of AK as a diagnostic tool for conditions in other systems of the body. A 2001 study found that muscle tests were no more helpful in diagnosing allergies than random guessing. Therefore, it is not advised to rely solely on this technique when making important healthcare decisions.
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Frequently asked questions
Muscle response testing, also known as applied kinesiology (AK) or manual muscle testing (MMT), is a system that evaluates structural, chemical, and mental aspects of health. It was first developed as an alternative medicine technique by George Goodheart Jr. in 1964.
During muscle response testing, a practitioner will apply force to a specific muscle or group of muscles and ask the patient to resist this force. The practitioner will then evaluate the tension in the muscle and the smoothness of the response. A smooth response is sometimes referred to as a "strong muscle", while a response that is not appropriate is called a "weak response".
Muscle response testing is used to diagnose structural, muscular, chemical, and mental ailments through weak muscles. It can also be used to identify allergies and other types of sensitivities, such as food intolerances. Additionally, it can be used to locate imbalances in the body that may be contributing to symptoms.











































