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Running how to do?The principle of


, a stitch

has not yet been finalized, but the mainstream view, I mainly because of diaphragmatic spasm (also can be said to be the diaphragm spasm).

1, what is the diaphragm?

diaphragm is a flat latissimus muscle, which is dome shaped upward, between the thoracic and abdominal cavity, the bottom of the thoracic cavity and the top of the abdominal cavity. The diaphragm is the main respiratory muscle. When it contracts, the diaphragmatic fornix decreases, and the volume of the chest expands. It helps to breathe in. When the diaphragm rises, the diaphragm rises, and the volume of the chest decreases, which helps to exhale.

simply, inhale and exhale on the diaphragm and intercostal muscles and other activities have. At the same time become flat diaphragm, diaphragm and external intercostal muscle, internal intercostal muscle relaxation, the ribs move upward and outward. At this time the volume of the chest increases, the internal pressure decreases, and the people breathe in. Conversely, when the diaphragm and the extratricostal muscle relaxes and the intercostal muscles contract, the people exhale.

2, why the spasm of the diaphragm?

start to exercise, the muscles of the body will enter a state of tension, but the internal organs are not prepared, especially the lungs have not immediately move to supply oxygen to strenuous exercise, and the body can only accelerate the respiratory frequency, it is easy to cause breathing are responsible for breathing diaphragm suddenly stimulated, tensions the movement is not harmonious, but also on the situation, spasm.

in addition, the spasm of the phrenic muscle is not only in the beginning of the movement. The diaphragm, like any other muscle in the body, can also be tired and cramped, so excessive training can also cause spasm of the diaphragm.
Why is
3, diaphragmatic spasm can cause chest pain?

I actually called acute chest pain, generally occurs in the lower ribs of the pain. After the spasm of the phrenic muscle, the ligaments that shake and pull the viscera (especially the liver) cause pain. The pain often occurs on the right side, because the body's liver is just below the right side of the body. So when the running exhale, the liver falls, the septum rises, and the ligaments of the liver are repeatedly pulled, causing pain.
Two, why
running stitch
I explained the principle of
is completed, to talk about daily life may lead to the cause of chest pain.

1, just ate sports easy stitch

when the body is digesting food, the blood flow to the diaphragm will decrease. If there is a lot of fat and cellulose in the food, it will take longer time to digest, and it will also lead to a decrease in blood flow to the diaphragm. The lack of blood in the diaphragm is easy to cause anoxic spasm, so it is recommended to exercise after 1-2 hours after meals.

2, not easy to warm up before exercise Chaqi

if you don't warm up, from the static state of all of a sudden become fierce movement, this will cause the body of rapid shallow breathing, caused by diaphragmatic muscle contraction uncoordinate easily stitch, so before.

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