Journal of Chiropractic Medicine 2010 (Sep); 9 (3): 138–145 ~ FULL TEXT
Scott Cuthbert, DC, Anthony Rosner, PhD, LLD[Hon]
Chiropractic Health Center, PC,
OBJECTIVE: The purpose of this case report is to describe the chiropractic care of a 10-year-old boy who presented with developmental delay syndromes, asthma, and chronic neck and head pain and to present an overview of his muscular imbalances during manual muscle testing evaluation that guided the interventions offered to this child.
CLINICAL FEATURES: The child was a poor reader, suffered eye strain while reading, had poor memory for classroom material, and was unable to move easily from one line of text to another during reading. He was using 4 medications for the asthma but was still symptomatic during exercise.
INTERVENTION AND OUTCOME: Chiropractic care, using applied kinesiology, guided evaluation, and treatment. Following spinal and cranial treatment, the patient showed improvement in his reading ability, head and neck pain, and respiratory distress. His ability to read improved (in 3 weeks, after 5 treatments), performing at his own grade level. He has remained symptom free for 2 years.
CONCLUSION: The care provided to this patient seemed to help resolve his chronic musculoskeletal dysfunction and pain and improve his academic performance.
From the Full-Text Article:
Developmental delay syndromes (DDSs) encompass the conditions known as dyspraxia, dyslexia, learning disabilities, and attention-deficit/hyperactivity disorder. Over the past decade, there has been a dramatic increase in the number of DDS-related visits to health care providers. The percentage of children with severe behavioral and language problems is increasing.  A study by the US Department of Education stated that more than 50% of minority and nonminority children are not reading at their grade level.  With the increase of Ritalin (Novartis, East Hanover, NJ) use by 700% since 1990,  it may occur to parents of children suffering from DDS to consider chiropractic and other means of treatment.
A recent case series suggests that a link may exist between motor impairments and DDSs in children. The muscle inhibitions found in 157 children with DDS were diagnosed using a manual muscle test protocol (MMT) developed in applied kinesiology (AK). Common psychometric tests used in the fields of educational psychology and special education were used pre- and post-treatment, revealing measurable improvements in cognitive function for 157 children with DDS between 6 and 13 years of age after the application of chiropractic treatments specified by AK. 
A growing body of research evidence has found that poor muscle tone is related to postural disorders, sensory-motor and coordination disorders, and kinesthesia in children with DDS. [5-7] It has been shown that motor dyscoordination, especially affecting the postural and ocular muscles, is the most common comorbid condition associated with this spectrum of disorders.  Because motor dysfunction, and specifically muscular inhibition, has been found as a common comorbidity associated with DDS, a reliable clinical tool for the diagnosis of this muscular inhibition is desirable. Poor motor performance is most practically assessed, with good reliability and validity in the clinic using MMT. [9-14]
Applied kinesiology evaluates muscle function using MMT, a diagnostic test that has shown good reliability and validity for patients with muscle strength impairments. The use of MMT procedures is for 2 purposes in AK: to aid in the diagnoses of structural, chemical, and/or mental aspects of disease and to determine the effectiveness of treatments. In so doing, AK has been presumed to guide the therapeutic application itself. [15, 16]
In AK, muscular dysfunction is thought to reflect neural function. First, Kendall et al  in the 1950s, then Goodheart  in the 1960s, followed by many others, have expanded the construct validity and the clinical usefulness of the MMT [9-19] because of the recognition that muscular imbalance is a key characteristic of spinal and articular dysfunction. Applied kinesiology is a diagnostic and therapeutic chiropractic technique that has gained peer-reviewed published support within the chiropractic, dental, biofeedback, acupuncture, veterinary, and other health care literature. [20-27] The theories underlying the AK manual muscle testing procedures as this relates to the treatment of children have been reported. [4, 28-31] A recent narrative literature review by Pauli  presents the AK concepts and the clinical research articles regarding the treatment of children with DDS.
The purpose of this case report is to describe the chiropractic management of a child with DDS (slow learning, reading disability, distractibility), complicated by neck pain, headaches, and asthma.
A 10-year-old male elementary school student presented with a 3-year history of neck pain and headaches. At the author's request, the patient completed a pain drawing and a 1 to 10 numeric pain scale (NPS) of neck and head pain at his initial consultation. On the NPS, he rated his neck pain as 5 of 10 and headache as 5 of 10 at the time of his first appointment. When asked how many days a week he had the headaches, the patient replied “3 or 4 days out of the week.”
Three years previous to his examination, while wrestling with his sister, the patient had tumbled backward while from the seated position a full 270°, landing on his chest and hyperflexing his neck. He experienced torticollis following this injury for 3 weeks. His mother and he agreed that his headache problem began at this time. Because he had a number of other chronic health issues, his torticollis and headaches were considered part of his usual health pattern; and no specific treatment was sought for these issues.
For the previous 4 years, the patient experienced episodes of severe occasional asthma exacerbated by exercise. The asthma symptoms were associated with nasal allergies and sinusitis symptoms. He had been prescribed albuterol, Flovent (GlaxoSmithKline, Brentford, London, UK), Singulair (Merck & Co, Whitehouse Station, NJ), and Zyrtec (McNeil Consumer Healthcare, Fort Washington, PA) by his pediatrician. These kept the asthma in check but were required daily and did not improve his ability to exercise without significant respiratory distress. He had not participated in organized sports for the past few years because he could not run and play without wheezing and bronchial restriction that forced him to use his medications. He had been to the emergency department 6 times previously for croup. He had eczema in the creases of his elbows and knees; he was modestly overweight, and his energy level was rated as low. Written informed consent was obtained from the patient's parents for publication of this case report.
A thorough battery of orthopedic and neurologic tests for the neck, spine, and pelvis was performed; and the test results were positive in the identical locations where pain was reported and muscle impairments were later found (Table 1). The positive orthopedic test results included Trendelenburg, Kemp, FABERE Patrick, Hibb, Soto-Hall, shoulder depression, and pain on palpation of the upper cervical facets.
Manual muscle test results
Muscle tests were used to determine if there were musculoskeletal impairments that could match the patient's continuing subjective complaints. Positive findings on MMT were used to guide interventions that would move the muscle weakness toward strength. If positive MMT findings were found, then the examination design continued to determine the cause of the dysfunction and whether it could be improved. To accomplish this, various sensory receptor stimuli were applied to determine if the muscle dysfunction was improved, indicating that the weakness was functional in nature and had potential for improvement.
The muscle tests listed in this examination as strong were equivalent to 5 on the 5-point strength scale provided in the Guides to the Evaluation of Permanent Impairment, Fifth Edition, by the American Medical Association.  Grade 5 is normal muscle strength, demonstrating a complete (100%) range of movement against gravity, with firm resistance offered by the practitioner. Grade 4 is 75% efficiency in achieving range of motion against gravity, with slight resistance and with decreasing increments of 25% efficiency with each lower grade to a minimum of 0. Muscles graded 4 or less were considered weakened, warranting interventions as described below. Blood pressure sitting was 107/72, and pulse rate was 100; standing blood pressure was 104/79, and pulse rate was 103. Stated height was 4? 8?, and weight was 115 lb.
Additional findings related to the MMT were that the deep neck flexor, right upper trapezius, and sternocleidomastoid muscles strengthened with forced expiration held. The AK ocular lock test showed disorganization in the use of the extraocular eye muscles, indicating neurologic disorganization of cranial nerves III, IV, and VI. This test has been described in the literature [4, 34] and indicates that the eyes do not work together efficiently and that, when the eyes are used in binocular vision, they create weaknesses in postural muscles. In this patient's case, when the eyes were turned in the left inferior direction, previously strong indicator muscles throughout the patient's body weakened. Saccadic motion of the eyes was evident during movement of the eyes through the left inferior cardinal field of gaze.
The patient was asked to read text that he had not been exposed to before. He read this slowly; and after the first few words but especially at the end of every line of text as his eyes turned to the next line of text below and left, previously strong indicator muscles would weaken. [4, 34]
Hypertonicity in the upper cervical spine posterior paraspinal muscles was palpable. Positive therapy localization to the left temporomandibular joint (TMJ) (but not the right) was elicited with clenching of the teeth. Therapy localization is a diagnostic procedure unique to AK that consists of placing the patient's hand over areas of suspected involvement and observing for a change in the MMT. This method is hypothesized to assist the doctor in finding areas that are involved with the muscle dysfunction found on MMT. [18, 35] It is hypothesized that stimulating the skin and the cutaneomotor reflexes may produce changes in muscle function.
Helbing sign (indicative of foot pronation) was present in both feet, and the AK shock absorber test (SAT) result was positive on both feet (Fig 1). The SAT involves striking the foot in various directions and then assessing changes in muscle strength. The SAT has recently been found to be a reliable tool for the discovery of subluxations of the foot that create muscle weaknesses in the proximal leg muscles. 
Shock absorber test.
The theories in AK assume that once the dysfunctional muscle has been identified, several treatment options should be considered. The one that appears to be most effective in restoring strength to the inhibited muscle (using the challenge and therapy localization test procedures) should be selected as a possible treatment for the patient. [18, 37] Through this approach, ineffective therapies that produced no improvements in muscle strength were rejected; and only those that elicit a positive muscle response were used. These theories guided the treatment given to this patient.
Treatment began with an attempt to correct the causes of the muscular deficits found on examination. Gentle cranial corrections were performed to return strength to the muscles of the neck and jaw that tested weak (Fig 2). A right inspiration assist and left expiration assist cranial fault correction to the temporal bones strengthened the sternocleidomastoid and deep neck flexor muscles to normal.  A right lateral sphenoid strain correction eliminated the positive ocular lock test result and eliminated the positive temporomandibular joint challenges [4, 34] (Fig 3).
In AK, the cranial challenge method involves an external pressure applied to the
cranial bones and/or sutures.  Muscle testing procedures are then performed to
determine a change in the muscle strength as a result of the stimulus.
Five of the 6 muscles that move the eye attach to the sphenoid bone.
When the patient touched (therapy localized) the adrenal gland's neurolymphatic reflexes as well as the acupuncture area called conception vessel 9 (a tonification point for the conception vessel meridian that is associated with the adrenal glands), [18, 37] several previously weak indicator muscles strengthened; and several previously strong indicator muscles weakened. This finding suggested that these areas influenced a portion of this patient's problems. Insalivation of an adrenal support supplement immediately corrected this muscular finding and additionally improved pain on palpation of the adrenal neurolymphatic reflex points (Fig 4).
Location for the neurolymphatic reflexes to the adrenal glands and alarm points for the lungs.
In addition, when the patient touched the alarm point for the lung below the clavicle medial to the apex of the coracoid process, there was immediate weakening of previously strong indicator muscles (Fig 4) (alarm points are diagnostic reflexes from traditional Chinese medicine related to the meridian system). 
A category II pelvic fault was found by challenge and corrected supine with DeJarnette blocks and prone using high-velocity, low-amplitude manipulation with a drop table. A left posterior occipital correction strengthened the gluteus medius and psoas muscles bilaterally and improved the cervical facet joint tension on the left from C1 through C6. Bilateral deltoid, serratus anticus, subscapularis, and teres minor weaknesses were strengthened with correction of T3 through T4 (which is also the associated point to the lungs in traditional Chinese medicine).  An upper cervical fixation correction was still required to strengthen the gluteus maximus muscles, which were weak bilaterally.
Treatment of the foot was accomplished with high-velocity, low-amplitude manipulations. The direction of misalignment and corrective manipulation was guided by the AK challenge method. These corrections abolished the muscle weaknesses in the legs resulting from the SAT and all subsequent directions of challenge to the foot.
Ocular lock testing and the saccadic motion of the eyes in the inferior left cardinal field of vision no longer caused any muscle weakness. The patient was also able to read text that was unfamiliar to him without this causing indicator muscles to weaken. Provocative test results at the cervical articulations were now negative. This suggested that the causative factors for a portion of the head, neck, and visual dysfunction had been found and corrected using AK structural methods. Cranial corrections not only improved the visual tracking tests for the eyes but also strengthened the cervical flexor and extensor muscles and thereby reduced the tension in the upper cervical extensor muscles.
The patient reported that, at the end of his first treatment, his headache was gone. Over the next 10 days (3 visits), the headaches remained at the NPS level of 1 in the suboccipital area only. After 5 visits (covering a 3-week period), all of his symptomatology was resolved with the score of “0 of 10” on the head and neck NPS.
The patient discontinued his asthma medications with no return of respiratory symptoms. He was now running with his classmates and playing sports.
His performance in school was dramatically improved; and his mother, teachers, school nurse, and pediatrician reported how his scholastic performance, comprehension in reading, and physical endurance had gone from low average to above average. Report cards for the previous 2 years before treatment were acquired; and a grade point average of D and C grades was present, with the lowest grades in math and reading and no grade above a C. In the 2 years following treatment, his report cards showed that his grade point average went up to B and A levels, with no grade below a B; and his reading and math scores were A and B, respectively.
The patient has remained free of the head and neck symptoms; his asthma is no longer a problem; and his performance in school has remained above average since his first series of 5 initial treatments 2 years ago.
In this case, the muscular impairments associated with the pain appeared to be an accurate measurement of the distress the patient was under. Treatment for these factors eliminated the patient's pain and restored his postural and muscular balance. In AK, the assessment became treatment in that muscular inhibitions found with the MMT were given specific physical challenges that improved the patient's muscular strength; these challenges guided the manipulative treatment applied and normalized tissue tensions on follow-up MMT.
Insalivation refers to the fact that the taste buds on the tongue can detect extremely small concentrations of substances within a fraction of a second of stimulation.  Oral nutrient evaluations are used in AK because they are clinically useful in the assessment process. Exposure to taste elicits a variety of neurologic, muscular, digestive, endocrine, cardiovascular, thermogenic, and renal responses.  The relationships between muscle function and specific nutritional deficiencies have been presented by Travell and Simons,  and biological plausibility of muscle and nutrient interactions is based on these rationales.
The nerve pathways causing change in muscle function as observed by MMT are still unclear; however, there is considerable evidence in the literature of extensive efferent function throughout the body from stimulation of the gustatory and olfactory receptors with actual insalivation  rather than merely the contact of a substance with the hand or belly as often taught and erroneously labeled AK to practitioners. 
Insalivation of choline (a component of the neurotransmitter acetylcholine) corrected this finding. The use of choline for exercise-induced asthma (EIA) has good evidence for efficacy. [43, 44] This patient suffered from EIA; and EIA is defined as a bronchial constriction and a decrease in airflow that is triggered by exercise with symptoms of chest tightness, coughing, wheezing, and difficulty breathing.  A number of recent published reports have demonstrated the effectiveness of the AK system of analysis for acupuncture system dysfunctions. [46-48]
The previous treatments did not deal directly with the craniosacral system, nor did they appear to evaluate adequately the sensory input into the nervous system from the musculoskeletal and viscerosomatic system (adrenal glands and lungs). Applied kinesiology theory suggests that to resolve biomechanical, biochemical, psychosocial, and sensory problems, many areas of the body must be examined and corrected to achieve long-lasting symptomatic relief. This global view of integrated biomechanics and neurophysiology is one that may distinguish chiropractic practice from that of many of the other manipulative therapy professions.
Limitations to this study were that standardized asthma outcome scores, including peak expiratory flow rates,  daily ß-2 inhaler use, depression anxiety stress scales,  and cortisol levels, were not recorded in this particular patient. Other objective measures such as reading test scores and headache pain diaries were not included. As in any case study, the natural resolution of symptoms in the patient cannot be ruled out. It is possible that the patient's symptoms resolved on their own at the same time that the treatment was being rendered.
After 3 years of neck pain and headaches and 4 years of asthma, reading difficulty, and learning disability, this patient's symptoms resolved. The patient has remained free of symptoms in these areas of difficulty for 2 years since his initial treatments.