“Anti-inflammatory Actions of Osteopathic Manipulative Treatment”
This study evaluates the hypothesis that osteopathic manipulative treatment (OMT) and non-invasive transcutaneous auricular vagus nerve stimulation (taVNS) elicit anti-inflammatory actions through activation of the parasympathetic nervous system. In a cross-over design, research participants will be subjected to various combinations of OMT, taVNS, or sham interventions during four study sessions, that are at least one month apart. During each study session research participants will undergo OMT and/or taVNS for 3 consecutive days. Blood pressure and electrocardiogram (ECG) will be recorded on all three study days to assess parasympathetic nervous system function. On the 3rd study day a blood sample will be taken to assess the effects of OMT and/or taVNS on inflammation.
Procedure - Occipito-Atlantal Decompression (OA DC)
The participant lies supine in a relaxed state while the investigator cradles the patient's head with their hands, middle finger pads along the inferior aspect of inion, reaching to the occipito-atlantal joint. The investigator then applies gentle posterior and cephalad traction to the occiput, while bringing the elbows together. This results in supination of the hands and separation of the middle fingers, creating a posterior-lateral force vector to either side of the foramen magnum. The pressu ...read more on ClinicalTrials.org
Procedure - Sham Occipito-Atlantal Decompression (Sham OA DC)
The participant lies supine in a relaxed state while the investigator applies light touch to the patient's head with their hands.
Procedure - Splenic Lymphatic Pump Technique (SpLPT)
With the participant supine, the investigator places a posterior hand along the left lower ribcage, and a superior hand over the left costal arch, encompassing the spleen. The investigatory compresses and releases the spleen at a rate of 20 compressions/min for 3 min.
Procedure - Sham Splenic Lymphatic Pump Technique (Sham SpLPT)
With the participant supine, the investigator places a posterior hand along the left lower ribcage, and a superior hand over the left costal arch, encompassing the spleen. The investigator will maintain light touch at these positions for 3 minutes. No compressions are performed.
Device - Transcutaneous Auricular Vagus Nerve Stimulation (taVNS)
A bipolar clip electrode is attached to the auricle at the location of the cymba conchae. Electrical stimulation (30 Hz stimulation frequency, 300 Î¼s pulse width) is applied for 10 min. The stimulation current is determined individually for each participant by slowly increasing the stimulation current until the participants feel a mild tingling sensation at the site of the electrode. Then the current is gradually reduced until the tingling sensation disappears. This current will then be used fo ...read more on ClinicalTrials.org
Device - Sham Transcutaneous Auricular Vagus Nerve Stimulation (Sham taVNS)
A bipolar clip electrode is attached to the auricle at the location of the cymba conchae but no electrical current is applied to the electrode.
Anti-inflammatory Actions of OMT - Role of the Cholinergic Anti-inflammatory Pathway and Translocation of Immune Cells From Reticular Organs to the Systemic Circulation