What is Applied Kinesiology?
Applied Kinesiology (AK) is a diagnostic and therapeutic technique developed within chiropractic medicine that uses manual muscle testing to evaluate neurological function and identify health imbalances. The core premise holds that specific muscle weaknesses correspond to dysfunction in particular organs, glands, or body systems—a relationship termed the “viscerosomatic relationship.” Practitioners apply gentle pressure to isolated muscles while the patient resists, interpreting strength or weakness as indicators of underlying structural, chemical, or mental health issues. Applied Kinesiology meaning encompasses both the manual assessment method and the broader therapeutic system built around it, integrating concepts from chiropractic, acupuncture meridian theory, nutrition, and reflex therapy.
Unlike academic kinesiology—the scientific study of human movement—Applied Kinesiology operates as an alternative medicine practice, and its claims are not supported by mainstream medical consensus. Scientific reviews have found insufficient evidence for its diagnostic accuracy, with studies concluding that muscle testing results do not exceed random chance in controlled trials. Despite ongoing controversy, AK remains popular among chiropractors, naturopaths, and integrative health practitioners worldwide, who use it alongside conventional diagnostic methods.
Origins & Lineage
Applied Kinesiology was founded in 1964 by George J. Goodheart Jr. (1918–2008), a Detroit-based chiropractor who graduated from the National College of Chiropractic in 1939. The breakthrough occurred when Goodheart treated a patient with chronic winged scapula—a shoulder condition causing weakness that had persisted for fifteen years and prevented employment requiring physical labor. Goodheart discovered tender nodules at the origin and insertion points of the serratus anterior muscle; upon massaging these areas, the muscle immediately strengthened and the shoulder stabilized.
This serendipitous observation led Goodheart to develop the “origin and insertion technique,” the first method in Applied Kinesiology. Over the subsequent decade, he expanded the system by incorporating ideas from osteopathy, acupuncture, and nutrition. In 1965, Goodheart integrated Frank Chapman’s neurolymphatic reflex points (developed in the 1920s by osteopath Frank Chapman, D.O.) and Terrence J. Bennett’s neurovascular reflexes (from the 1930s), correlating these reflex systems with specific muscles and organs. Later, influenced by the writings of physician Felix Mann, Goodheart incorporated acupuncture meridian therapy into the AK framework. He also drew on concepts from osteopath William G. Sutherland regarding cerebrospinal fluid flow.
Goodheart began teaching Applied Kinesiology techniques to fellow chiropractors in 1964, publishing yearly research manuals from 1964 to 1998. The International College of Applied Kinesiology (ICAK) was established to standardize training and certification, though numerous offshoots emerged using simplified muscle testing methods. Goodheart served as the first official chiropractor for the U.S. Olympic team at the 1979 Winter Games in Lake Placid, New York, bringing visibility to the practice. He continued developing and teaching AK until his death in 2008.
How It’s Practiced
An Applied Kinesiology session typically begins with conventional examination procedures: case history, postural analysis, gait observation, range of motion assessment, and reflex testing. The distinguishing feature is manual muscle testing (MMT), where the practitioner isolates specific muscles and applies gentle, gradually increasing pressure while the patient resists. Unlike standard orthopedic muscle testing that measures maximum force, AK testing evaluates neurological response and muscle “lock”—the ability to maintain contraction against moderate resistance.
In a typical test, the patient extends an arm horizontally while the practitioner applies downward pressure to the wrist, instructing the patient to resist. A muscle that “unlocks” or weakens under moderate pressure is considered neurologically compromised. The practitioner then uses “therapy localization”—having the patient touch suspected problem areas while retesting the muscle—to pinpoint specific dysfunctions. Changes from weak to strong, or strong to weak, indicate areas requiring therapeutic attention.
AK practitioners assess five primary systems: vascular (blood circulation), lymphatic (tissue drainage), nervous (nerve function), meridian (acupuncture energy pathways), and cerebrospinal fluid flow. Treatment protocols include spinal manipulation, cranial techniques, deep massage of neurolymphatic reflex points, light contact on neurovascular points, nutritional supplementation, dietary changes, and acupressure on meridian points. Practitioners may also test nutritional supplements by having patients hold substances while muscle testing, interpreting strengthening responses as beneficial and weakening as contraindicated—though this practice lacks scientific validation.
Applied Kinesiology Today
Applied Kinesiology remains most prevalent in chiropractic practice; a 1998 survey by the National Board of Chiropractic Examiners found that 43% of U.S. chiropractic offices used AK techniques. It has also spread to naturopathic doctors, nutritionists, massage therapists, and some medical doctors and osteopaths. Training is available through ICAK-certified programs, requiring prerequisite healthcare credentials (D.C., D.O., M.D., N.D., or equivalent). Certification involves extensive coursework in anatomy, neurology, and specific AK protocols.
Seekers encounter Applied Kinesiology primarily through integrative health clinics, holistic wellness centers, and alternative medicine practitioners. Sessions are typically individual appointments rather than group classes or retreats. Some practitioners incorporate simplified muscle testing into other modalities—including specialized techniques like Neuro Emotional Technique (NET) for stress reduction, and various forms of “energy work”—though these offshoots often diverge significantly from classical AK methodology.
Applied Kinesiology for beginners usually begins with a consultation at a certified practitioner’s office, as the technique requires hands-on assessment and cannot be self-administered in its traditional form. Multi-level marketing companies and wellness entrepreneurs have popularized simplified “muscle testing” versions, contributing to widespread confusion about what constitutes authentic AK practice versus derivative methods.
Common Misconceptions
Applied Kinesiology is frequently confused with academic kinesiology (biomechanics), which is the legitimate scientific study of human movement taught in universities. AK is not recognized as scientifically valid by mainstream medical organizations, including the American College of Allergy, Asthma and Immunology, which stated there is “no evidence of diagnostic validity” for applied kinesiology in allergy testing.
A critical misconception is that muscle testing can diagnose specific diseases, detect allergies, or select appropriate medications and supplements with reliable accuracy. Controlled studies have repeatedly failed to demonstrate reliability beyond chance, with one double-blind study on venom allergy diagnosis concluding that “kinesiology as a diagnostic tool is not more useful than random guessing.” The subjective nature of manual muscle testing makes it vulnerable to practitioner bias and the ideomotor effect—unconscious muscle movements influenced by expectations.
Applied Kinesiology is not a standardized practice; numerous variations exist under names like “muscle testing,” “energy testing,” or “behavioral kinesiology,” many bearing little resemblance to Goodheart’s original protocols. ICAK-certified practitioners emphasize precise, replicable testing procedures, but the proliferation of uncertified practitioners using simplified techniques has diluted quality control. What is Applied Kinesiology in clinical practice often varies dramatically depending on the practitioner’s training and philosophy.
Finally, AK should not be viewed as a replacement for conventional medical diagnosis and treatment. Serious conditions require standard diagnostic procedures—bloodwork, imaging, and specialist consultation. Mainstream medical consensus holds that while manual muscle testing may reveal general neuromuscular function, the claimed organ-muscle correlations and diagnostic capabilities lack empirical support.
How to Begin
For those curious about experiencing Applied Kinesiology, the starting point is locating a certified practitioner through the International College of Applied Kinesiology (ICAK) directory at icak.com. Ensure the practitioner holds legitimate healthcare credentials (D.C., D.O., M.D., N.D.) and ICAK certification, as quality and methodology vary widely among those claiming to practice muscle testing.
Prospective patients should approach AK as a complementary assessment tool rather than a primary diagnostic method. Maintain standard medical care for any serious health conditions, and view muscle testing as one data point among many. Questions to ask practitioners include their training lineage, certification status, integration with conventional diagnostics, and acknowledgment of the technique’s limitations and controversial standing in medical literature.
For practitioners interested in learning Applied Kinesiology, training requires existing healthcare licensure and involves multi-year coursework covering functional neurology, manual muscle testing protocols, and the five-system assessment framework. The commitment is substantial, reflecting the complexity of the methodology beyond superficial “arm pull-down” demonstrations commonly seen in wellness settings.
Those researching what is applied kinesiology should consult both proponent and critical sources. Goodheart’s collected works, available through ICAK, provide the foundational perspective. Scientific skepticism is documented in peer-reviewed medical literature, particularly reviews in the Journal of Manipulative and Physiological Therapeutics and position statements from medical specialty organizations. This balanced approach allows informed decision-making about whether to incorporate AK into one’s healthcare choices.