Applied Kinesiology

Applied Kinesiology is the diagnostic art of listening to the body through its own muscles. Dr. George J. Goodheart, Jr. built it in Detroit beginning in 1964, and its central move is to treat the manual muscle test not as a measure of raw strength but as a window into the nervous system. The practitioner tests, applies a stimulus, and retests in a tight loop, using the muscle’s instant response as both the question and the confirmation. It is less a single adjustment than a method of inquiry.

Applied Kinesiology began with a shoulder that would not hold

The founding case arrived for something else entirely. In 1964 a former paratrooper came to Goodheart’s Detroit office losing his hair rapidly. Goodheart ran an Achilles tendon reflex time test, a photoelectric measure of how quickly the ankle reflex relaxes. A normal half-relaxation time falls between 240 and 320 milliseconds, and a fast return points toward an overactive thyroid, a correlation documented in the medical literature since the early 1960s. He treated the thyroid picture nutritionally and through the spine, and the hair loss stopped.

Only then did the man raise his real problem. He could not pass the physical for a Detroit auto plant job, because when he pushed forward his shoulder blade lifted off his back. He had carried the winged scapula about fifteen years. Films of both scapulae came back normal.

Goodheart had been given a copy of Kendall and Kendall’s muscle testing manual by a chiropractor in Port Huron, in trade for treating the man’s knee. His first reading of it left him unimpressed. If a muscle tests weak, he reasoned, all you can do is exercise it. Faced with the paratrooper, he went back to it and reasoned toward the serratus anterior, the muscle that holds the scapula flat.

He looked for the wasting he expected after fifteen years of disuse and found none. What he found instead, palpating along the muscle’s attachments, were small nodules on one side that had no match on the other. He rubbed them hard. They gave way under his fingers. He retested, and the man nearly drove his hand through the plywood panel he was pushing against.

The strength held the next day and afterward. That correction became the origin and insertion technique, and it is the first Applied Kinesiology procedure.

Why weakness, not spasm, became the target

The finding that founded the field is an inversion, and it is the intellectual content of Applied Kinesiology.

The teaching of the day held that muscle spasm was the primary problem and the thing to treat. Goodheart concluded the opposite. The spasm is secondary. The primary event is a muscle that has quietly stopped working, and its opposite number tightens to compensate. He used a sailboat mast to explain it. The mast stands because the stays pull evenly on both sides. Loosen one and the mast leans, and the tight side is not the fault.

He described the clinical consequence in stark terms. Before 1964 he saw hundreds of cases he would have called muscle spasm. After, once he was looking for the inhibited muscle instead, genuine spasm became rare enough to count.

That reframing is what makes the rest of the system possible. If weakness is primary and reversible in seconds, then a muscle is no longer only a mover. It becomes an instrument that reports on whatever is upstream of it.

The discoveries that built the system, 1965 to 1974

Applied Kinesiology accumulated in stages, and Goodheart’s own accounts show each stage beginning with a result he did not predict.

The lymphatic reflexes, 1965

Goodheart’s father held osteopathic, chiropractic, and naturopathic degrees, and Goodheart came to the reflex literature through him. He knew the work of the osteopath Frank Chapman, published through Charles Owens in the late 1930s, which mapped palpable points to specific organs. He could not make it useful, because there was no way to tell which point mattered for a given patient.

His own secretary supplied the test case. She had a thyroid condition, chronic sinus trouble, and a head that tilted. Her sternocleidomastoid tested weak, and the origin and insertion work that had solved the paratrooper’s shoulder did nothing for her. Goodheart went instead to a Chapman point under the clavicle. The muscle came back immediately, and her headache resolved with it.

That pairing solved the problem the reflex literature had left open. The muscle test told him which reflex was live.

The neurovascular reflexes and the emotional side

Terrence Bennett had described contact points where light pressure is held until a pulse rises. Goodheart found the Bennett points for the stomach on the forehead, midway between eyebrow and hairline above each eye, and paired them with the pectoralis major clavicular division.

The emotional side of Applied Kinesiology entered through those same points. Treating a chiropractor whose arm had shaken continuously since a mountain road accident, Goodheart held the neurovascular contacts rather than adjusting. He felt the pulsation build, and the tremor stopped. The structural, chemical, and mental sides of the triad had until then been a framework. That case gave the mental side a physical contact.

Tapping the acupuncture points

The idea came from pain research, not from acupuncture. Goodheart had read Melzack and Wall’s gate control theory, and he had noticed a pattern in their clinical examples. Veterans with syringomyelia drummed their fingers to quiet the pain. Amputees struck the stump to quiet a phantom limb. All of it was tapping.

He tested the idea on a patient who had returned from Asia with infectious hepatitis and a clavicle fracture that would not unite. Tapping the liver point improved her breathing, but the effect faded. One day he kept tapping several minutes past his usual stopping point, and she asked whether it could be responsible for her fracture pain stopping.

He tapped the sedation point on the great toe and brought the pain back, along with the breathing difficulty. He then reversed it again. Then he brought in a colleague to confirm the finding independently. A practitioner who wanted to believe his own result would not have deliberately undone it twice.

The vertebral challenge, 1973

A young woman was scheduled for shoulder surgery. Her shoulder dislocated in her sleep, without injury, always in the early hours. Goodheart asked what position she slept in, put her in it, and palpated her cervical spine, where one segment sat out of place.

He pressed on it. The shoulder dislocated on his table, and he had to reduce it.

The insight came from the failure. When he pushed, the body pushed back. He adjusted in the direction that had produced the weakness, then could not make the shoulder dislocate again in any position. She kept her shoulder. Adjusting in the direction that produces weakness remains the standard for the challenge.

Therapy localization, 1974

Goodheart called therapy localization the single greatest advance in the healing arts of his century, and it came from two observations years apart.

The first was an Australian tennis player with carpal tunnel signs. Goodheart asked her to squeeze her radius and ulna together, which restores the arch of the transverse carpal ligament, and her weak muscle tested strong. She then told him she had not squeezed anything. She had only touched it. He tested it repeatedly. Touch, strong. No touch, weak.

He filed it away for years. It resurfaced while he was preparing to take his children skiing after his first wife’s death, turning over how her illness had gone unfound. The thought that arrived was to ask the patient to ask the patient.

Before therapy localization, a weak muscle meant working through every one of the five factors in turn. After it, the patient’s own hand narrowed the search first.

The five factors of the intervertebral foramen

Goodheart’s organizing anatomy sits at the intervertebral foramen, the opening between two vertebrae where structures leave the spine. Five things pass through it. A nerve, a blood vessel, a lymphatic vessel, cerebrospinal fluid, and what Applied Kinesiology calls an acupuncture meridian connector. These are the five factors, and they are the reason the method reads a weak muscle as a question rather than a verdict.

A muscle that fails to lock is reporting that something in its supply line has changed. The tested muscle names the circuit. The five factors name what could be responsible. Goodheart spent the years after 1964 correlating those factors against muscle response one at a time. This is why an Applied Kinesiology finding leads to nerve work, lymphatic contact, vascular contact, cranial and fluid technique, or meridian work rather than to one fixed correction applied to everyone.

How a manual muscle test is performed

Applied Kinesiology is a diagnostic overlay layered onto whatever therapies a practitioner is licensed to use. The method is codified in David S. Walther’s Applied Kinesiology: Synopsis (2nd ed., Systems DC, 2000), which grew out of the workshop manuals Goodheart circulated to his study groups from 1964 onward.

The patient holds a limb in a specific position and resists. The practitioner applies smooth, graded force in the direction that would lengthen the muscle. What matters is not how much force the patient can produce but the quality of the lock. A muscle that holds smoothly and instantly is read as facilitated. One that gives way or feels mushy is read as inhibited.

Two refinements sharpen the inquiry.

• Therapy localization: the patient rests a hand flat over a suspected area while an indicator muscle is retested. A change in either direction means the body has localized the concern. The practitioner applies no force. The contact itself is the question.
• Challenge: the practitioner introduces a brief mechanical stimulus, pushing a vertebra in a given direction or having the patient hold a substance, then retests immediately to see whether the nervous system copes or falters.

What the testing reveals guides the correction, drawn from the practitioner’s full scope. Origin and insertion work, neurolymphatic reflex stimulation, neurovascular contact, spinal and cranial adjusting, and meridian or nutritional support are all corrections the practitioner can use. After any correction the same muscle is retested immediately. An inhibited muscle that locks immediately afterward is the method’s mark of success.

What the muscle test is reading

A manual muscle test is a sensory question with a motor answer. The loop is ordinary neurology. A stimulus arrives, the nervous system integrates it, and a motor response follows. Applied Kinesiology introduces a stimulus, retests within seconds, and reads the change in the muscle’s lock as that integration made visible.

The test set itself was inherited and then expanded. Henry and Florence Kendall developed roughly 43 manual muscle tests in the early twentieth century to grade polio patients. Applied Kinesiology built that foundation out to several hundred, isolating individual muscles rather than gross movements.

The distinction that carries the method is between a muscle that is weak and a muscle that is inhibited. A weak muscle lacks contractile capacity and responds to training. An inhibited muscle has the capacity and is not being recruited, which is why it can change in seconds and why lifting heavier does not correct it. The mirror finding is a muscle locked on, holding tension nothing asked it to hold, which patients experience as spasm.

Underneath both sits the quality of sensory input. When a joint or a muscle stops reporting accurately, the nervous system loses information it needs to plan the next movement, a loss the field calls deafferentation. Change the input and the motor output changes with it. That is the same mechanism the Unified Model of Tone describes. The body regulates from the information it receives about itself, and an input that restores accurate self-registration changes what the body can do next.

Therapy localization tells you where, not what

Goodheart drew the boundary himself, and it is the most useful sentence in the discipline. Therapy localization identifies a location. It does not identify a cause. The physician still has to make the diagnosis.

He taught the same limit through a case he never stopped telling. A woman came to him with a cough that had defeated an ear nose and throat specialist, an internationally known chest physician, and an internist. Every one of them had examined her sitting upright. Goodheart examined her lying flat and found a mummified bee high on her nasal septum. Removing it ended the cough.

Three specialists had missed it in an examination that takes under a minute. His conclusion was not that muscle testing found the bee. It did not. His conclusion was that Applied Kinesiology is a system of diagnosis, and that a practitioner should aim to be a good diagnostician rather than to produce spectacular results.

Janet Travell and the trigger point bridge

The strongest link between Applied Kinesiology and mainstream medicine runs through Dr. Janet Travell, White House physician to President Kennedy and the author who established myofascial trigger points as a clinical entity.

Goodheart and Travell appeared on the same program at a dental meeting in Bandera, Texas, each having been invited independently. The demonstration patient was a dentist who could open his jaw about one knuckle, against a normal of roughly three. Travell used her spray and stretch technique and got him to two. Goodheart followed with therapy localization and spindle cell work on the masseter and got the third.

Travell located trigger points by palpation. Goodheart rarely could, but he found something adjacent and useful. Pressing a trigger point weakened that muscle and every other muscle he tested on the same side.

The exchange also redirected Applied Kinesiology’s nutritional work. Travell reported using B12 and folic acid in a high proportion of her patients, which pushed Goodheart’s group from organ specific pairings toward looking for patterns. A muscle that weakens on stretch reads differently from one that weakens on repeated testing, and a single muscle weakening on repetition reads differently from a group weakening together.

The rule the method holds itself to

Goodheart’s instruction to the practitioners he trained was to test and then prove. The muscle test was never meant to stand alone. It runs alongside orthopedic examination, laboratory work, and imaging, and the practitioner is expected to assemble a full clinical picture rather than a muscle-only one.

The discipline is interdisciplinary by design. Applied Kinesiology at diplomate level is practiced by chiropractors, osteopaths, naturopaths, medical doctors, and dentists across the International College’s national chapters. A shared examination language is what lets a finding travel between those professions.

Fluency takes years. Practitioners describe the muscle test as vocabulary and the combinations as sentences, and the consistent estimate from senior teachers is roughly five years of daily use before the reading becomes fluid.

Where Applied Kinesiology meets the Unified Model of Tone

Applied Kinesiology is a diagnostic system, and the Unified Model of Tone is a claim about what is being diagnosed. The overlap is close enough to state precisely, because Goodheart reached several of the model’s positions from the table rather than from theory.

The reading is already an input

The model holds that registration sits inside the loop it reports on, so there is no way to sample the body’s state without changing it. Palpation changes the tissue palpated. Attention changes autonomic and sensory processing. The same contact can be assessment and treatment in a single motion.

No procedure in this library shows that more plainly than therapy localization. The patient rests a hand over an area of their own body, an indicator muscle is retested, and the practitioner applies no force at all. The contact itself is the question, and the nervous system answers within seconds. Goodheart found the effect through an Australian tennis player who told him she had only touched her wrist rather than squeezed it.

Inhibition and weakness separate the regulator from the quantity

Goodheart’s sharpest distinction is between a muscle that is weak and a muscle that is inhibited. A weak muscle lacks contractile capacity and answers to training over weeks. An inhibited muscle has the capacity and is not being recruited, which is why it can change in seconds and why lifting heavier does not correct it.

The model makes the same cut at the scale of the whole body, holding that regulation degrades before quantity does. Tissue can keep its capacity while losing the accuracy of the commands reaching it, and the dynamic measure moves first. Applied Kinesiology put that claim to work by hand in 1964, and it is why the method treats a muscle as an instrument rather than only as a mover.

The five factors are a triangulation discipline

Every window onto the body’s state is partial and carries its own error, so the model holds that accuracy comes from triangulating across several rather than trusting one. A structure can be imaged in fine detail while the pattern it holds stays invisible.

Goodheart’s five factors of the intervertebral foramen are that discipline written into anatomy. The tested muscle names the circuit. The nerve, the blood vessel, the lymphatic vessel, the cerebrospinal fluid, and the meridian connector name what could be responsible for it. A finding narrows the search rather than closing it.

Assessment is where accuracy lives

The model locates specificity in the reading rather than in the hands, because an input can only correspond to a pattern that has already been found. Assessment, not delivery, is the seat of accuracy.

Applied Kinesiology is the clearest case of that claim in this library, since it is an assessment system and nothing else. It carries no signature adjustment of its own. Goodheart drew the boundary himself, and drew it tighter than any critic would have: therapy localization identifies a location, not a cause, and the physician still has to make the diagnosis.

One examination language across several professions

Applied Kinesiology at diplomate level is practiced by chiropractors, osteopaths, naturopaths, medical doctors, and dentists. A finding travels between them because what they share is the examination language rather than the treatment that follows it.

The model reads that as ordinary rather than remarkable. Tonal chiropractic treats every technique and every profession as a different analysis, a different philosophy, and a different force application, all making an input into the same body. The differences are differences of doorway. Applied Kinesiology is unusual only in being the doorway several professions walk through at once.

Two claims the model carries as predictions

Two of Applied Kinesiology’s positions sit ahead of the measurement, and the model states them as its own predictions.

The first is bidirectional. Goodheart reported that once he began treating inhibition rather than spasm, genuine spasm became rare enough to count. The model predicts the general form of that result. A matched input should move an inhibited muscle and an overfacilitated one toward the same middle, narrowing the spread across a group rather than shifting everyone one direction. Instrumented muscle testing already resolves force and displacement finely enough to run it.

The second is specificity. Applied Kinesiology stakes its method on the claim that the site the body localizes is not arbitrary. The model predicts that a site identified in advance, recorded before the outcome is known, will outperform an unspecified one. If a location named in advance performed no better than any other, specificity as correspondence would be false.

Who carries Applied Kinesiology forward

The work is stewarded by the International College of Applied Kinesiology, with national chapters including ICAK-USA, founded in 1976 by Goodheart and the educators he trained, alongside ICAK-UK, ICAK-Canada, and ICAK-Australasia.

Teaching is deliberately gated. Only those holding the Diplomate of the International Board of Applied Kinesiology may instruct. The credential requires a minimum of 300 hours of study under at least two different teachers, of which at least 100 hours must be advanced classes. Three years of clinical practice and examination by the International Board of Examiners follow.

Instruction flows through the standard ICAK 100-hour certification course, the ICAK Council of Certified Teachers, and national continuing education seminars. Among the documented instructors carrying the discipline forward are Dr. Scott Cuthbert, DC, author of the modern textbook Applied Kinesiology Essentials and a former chairman of the ICAK-USA research committee, who trained directly under Walther, and Dr. Michael Hooker, DC, DIBAK, who leads the New Zealand certification programme.

Goodheart died on March 5, 2008, at his home in Grosse Pointe Farms, Michigan, aged 89.

Applied Kinesiology at the Olympic Games

Goodheart became the first chiropractor appointed to a United States Olympic medical staff, at the 1980 Lake Placid Winter Games, and the first practitioner from outside medicine to serve on that committee.

The appointment turned on a demonstration rather than an argument. Irving Dardik, the vascular surgeon who founded the United States Olympic Committee’s Sports Medicine Council in 1978, could not run more than two miles without a severe cramp. Goodheart treated it as a reactive muscle problem, working the latissimus dorsi to change its relationship with the hamstring. Dardik ran ten miles the following day and ten more the day after without cramping. In 1979 he recommended that the USOC include a Doctor of Chiropractic on its medical team at all future Games.

Lineage and influence

Applied Kinesiology is a synthesis by Goodheart’s own description, and its lineage reaches across several traditions. The neurolymphatic reflexes came from Frank Chapman and the neurovascular reflexes from Terrence Bennett. The cranial and cerebrospinal fluid concepts trace to William Sutherland’s cranial osteopathy, and the meridian work to Felix Mann. The vertebral challenge and therapy localization grew from the theories of L.L. Truscott, and the muscle grading methodology adapts Kendall and Kendall.

Goodheart’s first published paper predates Applied Kinesiology by more than a decade and shows the same habit of mind. He learned that manganese deficiency causes perosis in chickens, a laxity that makes their legs bend backward, then observed during a disc surgery that the spinal muscles had no tone at all. He connected ligament laxity to manganese and published the result.

Downstream, the influence has been wide. Goodheart’s student John Thie built Touch for Health, which carried muscle testing to lay practitioners worldwide, and Total Body Modification, Neuro Emotional Technique, and Contact Reflex Analysis all descend from the same root.

How this page relates to the rest of the library

Applied Kinesiology sits among several neighbours in this library, and each one carries a piece of the same argument.

The Unified Model of Tone supplies the reading that makes the muscle test coherent, because a body that regulates from its own self-registration will change output when the input changes. The Nervous System covers the sensory and motor architecture the test depends on, including the reflex loops that make a response arrive in seconds. Network Spinal Analysis and Torque Release Technique approach the same nervous system through different doorways, both favoring low force and system response over mechanical correction. The full index of 33 techniques places Applied Kinesiology among the diagnostic overlays rather than the adjusting methods, which is the category Goodheart intended for it.