Common steps and sub-activities
Negative pressure therapy
Negative pressure therapy is a very unique form of controlled breathing. It is mechanically assisted breathing and in tests appears to have very marked effects on healing of lung diseases as well as promoting relaxation.
Autobiography of a Yogi – Paramahansa Yogananda
Dr Alvan L Barach of the College of Physicians and Surgeons in New York has originated a local lung-rest therapy that is restoring health to many tuberculosis sufferers. The New York Times of Feb. l, l947, quoted Dr. Barach as follows:
"The effect of cessation of breathing on the central nervous system is of considerable interest. The impulse for movement of the voluntary muscles in the extremities is strikingly diminished. The patient may lie in the chamber for hours without moving his hands or changing position. The desire to smoke disappears when voluntary respiration stops, even in patients who have been accustomed to smoke two packages of cigarettes daily. In many instances the relaxation is of such a nature that the patient does not require amusement."
In 1951 Dr. Barach publicly confirmed the value of the treatment, which, he said,
"not only rests the lungs but also the entire body, and, seemingly, the mind. The heart, for example, has its work decreased by a third. Our subjects stop worrying. "
From these facts, one begins to understand how it is possible for yogis to sit motionless for long periods without mental or bodily urge toward restless activity. Though ordinary men must remain in an equalizing pressure chamber to obtain certain benefits of non-breathing, the yogi needs nothing but the Kriya Yoga technique to receive rewards in body and mind, and in soul-awareness.
This technique must be one of the oddest in the group of voluntary techniques. Its origins are very clearly medical, the apparatus described was successfully used to treat TB and also other pulmonary diseases as well as polio victims. You perhaps know them as ‘iron lungs’, but the name has so many negative connotations that I prefer the more positive name of negative pressure therapy.
Some of the pioneering work of using these machines was carried out by Dr Alvan Barach and a tribute to him is provided on the site. Dr Barach died in 1977. Although many other people contributed to the development of the machine, it is to Dr Barach that I have turned to get a description of why this technique is a contributor to total relaxation and a very effective one.
How it works/method of use
You don’t need to do anything, all you do is lie there. In effect, the machine breathes for you.
Humans, like most other animals, breathe by negative pressure breathing: the rib cage expands and the diaphragm contracts, expanding the chest cavity. This causes the pressure in the chest cavity to decrease, and the lungs expand to fill the space. This, in turn, causes the pressure of the air inside the lungs to decrease (it becomes negative, relative to the atmosphere), and air flows into the lungs from the atmosphere: inhalation.
When the diaphragm relaxes, the reverse happens and the person exhales.
A person using a negative pressure ventilator is placed into the central chamber, a cylindrical steel drum. A door allowing the head and neck to remain free is then closed, forming a sealed, air-tight compartment enclosing the rest of the person's body.
Pumps that control airflow periodically decrease and increase the air pressure within the chamber, and particularly, on the chest. When the pressure is below that within the lungs, the lungs expand and atmospheric pressure pushes air from outside the chamber in via the person's nose and airways to keep the lungs filled; when the pressure goes above that within the lungs, the reverse occurs, and air is expelled.
In this manner, the machine mimics the physiological action of breathing: by periodically altering intrathoracic pressure, it causes air to flow in and out of the lungs. The machine is thus a form of non-invasive therapy.
Positive pressure ventilation systems are now more common than negative pressure systems and work by blowing air into the patient's lungs via intubation through the airway. These are generally efficacious and have the advantage of not restricting patients' movements or caregivers' ability to examine the patients as significantly as the negative pressure machine. However, negative pressure ventilation is a truer approximation of normal physiological breathing and results in more normal distribution of air in the lungs.
It also has a very profound effect upon the person’s mood – treatment/therapy of only a relatively short time [say a few hours] can result in a very very relaxed state.
Furthermore, as long as the surroundings in which the machine is used are pleasant and relaxing, quiet and non threatening; and as long as the type of machine used is comfortable inside minimising bodily discomfort then the person also undergoes a form of sensory deprivation.
- Many health benefits
- Extremely difficult to find in practise
- Not for people who are frightened of being ‘trapped’
- Very unfortunate associations may cloud the efficacy of the technique
- IMMOBILIZATION OF BOTH LUNGS PRODUCED BY THE EQUALIZING PRESSURE CHAMBER WITH RESULTS OF TREATMENT IN PULMONARY TUBERCULOSIS - ALVAN L. BARACH, M.D., F.A.C.P.
- Breath: A Lifetime in the Rhythm of an Iron Lung: A Memoir by Martha Mason and Anne Rivers Siddons
- Jax new iron lung - a youtube video
For iPad/iPhone users: tap letter twice to get list of items.
- Clinical Results and Physiological Effects of Immobilizing Lung Chamber Therapy in Chronic Pulmonary Tuberculosis
- Effect of a pneumatic breathing aid on the minute ventilation of patients with chronic obstructive lung disease and bronchial asthma
- Effect of assist negative pressure ventilation by microprocessor based iron lung on breathing effort
- Martha Ann Lillard inside the iron lung
- The iron lung – a polio patient's story