When the larynx is compressed between the pulling of the head forward, and the pushing of the leg upward, pain is the first thing felt.
When pain is felt in the body, one of the first involuntary reactions is the swallow reflex.
When full pressure is applied, it is almost impossible to swallow, allowing saliva to begin filling up the mouth. This inability to swallow, leads to a panic response.
During a panic response, the adrenal glands begin to produce hormones. These hormones make up the "fight or flight" response.
During fight or flight, the heart rate and respiratory rate increase. At this point,the body needs more oxygen than normal to fuel the brain, and the rest of the body. The brain uses almost 20 percent of the oxygen that is taken into the lungs.
With the larynx compressed, it is not possible to get an adequate amount of oxygen to the lungs.
The person caught in the hold will begin to black out, and lose consciousness. This condition is known as Cerebral Hypoxia. It can take up to two minutes for a person to pass out from lack of oxygen to the brain.
The brain can be oxygen deprived for four to six minutes, before brain damage begins to occur.
This move is very dangerous. Permanent damage to the larynx can happen, causing permanent problems. Depending on the severity of the damage, surgery may be able to rebuild the larynx to the normal form.
Death can also happen if this move is maintained for a prolonged period of time.
Other parts of this series can be located by clicking the links below.
Part 1 Part2 Part 3 Part 4 Part 5 Part 6
Louie Babcock has over five years experience working in emergency medicine, and is studying biology and health science at the University of Minnesota.
Follow me on Twitter@Medic_Louie