The effect of emotional trauma on physiological functioning has been documented in a number of studies. The largest of these is the ACE study, (ACE=Adverse Childhood Experiences), which examined the health outcomes of over 17,000 patients at Kaiser Permanente Hospitals. It was performed by Kaiser in collaboration with the Centers for Disease Control, on a population with a median age of 56. The ACE study found that those patients with a high incidence of Adverse Childhood Experiences or ACEs had higher rates of bone fractures, cancer, heart disease, hypertension, depression, smoking, suicide, diabetes, and other physical and psychological ailments. The authors of the study compared the health care system's focus on treating disease in adults to a fire brigade directing their water at the smoke, rather than at the originating fire. They recommended that health care providers focus on the emotional trauma which they believe contributes to many illnesses.

The current study seeks to determine if the treatment of emotional trauma has an effect on physiological function. As a marker of physiological function, the authors of this study have chosen the range of motion of the joints of the upper body. Shoulder joint stiffness and syndromes such as frozen shoulder typically take months or even years to heal, and rapid resolution is unusual, though most such injuries do indeed heal over time. Range of motion is a convenient marker of physiological change because it can be measured accurately in degrees using a goniometer, a protractor-like device routinely used in occupational therapy and physical therapy. Changes after treatment can be immediately noted.

The emotional trauma treatment modalities being investigated are Emotional Freedom Techniques or EFT, and Diaphragmatic Breathing or DB, with the DB group receiving an identical protocol but with DB substituted for the acupressure component of EFT. They are being compared with a no treatment control group. Studies of EFT have shown this therapy to be effective in removing or reducing emotional traumas, such as phobias, in a single brief treatment session, as well as in reducing anxiety. The effects hold over time. Most prior studies using EFT as a treatment modality study the effects of only one session, and have found that EFT can be effective even with a very brief course of treatment. For the current study, one 30 minute EFT treatment is undertaken. The range of motion of the shoulder joint is recorded before and after treatment by a licensed occupational therapist using a goniometer. The Diaphragmatic Breathing protocol used by the second group has a verbal content identical to the EFT group, but substitutes DB for acupressure. A follow up assessment of subjects is done after 30 days. Range of motion usually does not relapse, but instead becomes greater, following conventional treatments, and this measure has the advantage of requiring a relatively short follow up period, rather than the longer period required for other physiological markers.

The purpose of the study is to discover if a significant change in the range of motion occurs after treatment, and to dismantle the acupressure from the verbal component of EFT by substituting DB for this portion of the protocol.