Effect of step-leap respiration on the cardiovascular function under the analogous qigong state

The final conclusion has prevailed for long that respiration has a definite effect on car diovascular function. The Institute of Physio-Medical Engineering of the China Academy of Medical Science has put forth the training model of respiration by making use of the cardio electric feedback control. Through such a specific breathing drill ,it is intended to enable the internal pressure of the chest of one under training to take the shape of a step-leap of each in halation phase,and precisely at the time of the systole of the heart(a certain time after the cardioelectric R wave) it positively increases the transmural pressure of the chest aortas,thus lowering the obstruction of the cardiac ejction of the heart. The repeated chest internal pres sures coming from the exhale phase occur exactly at the time of the beginning of the diastole of the heart(a time after the cardioelectric T wavc) ,positively reduce the transmural pressure of the chest aorta.increase the systolic pressure of the arteries and enhance the perfusion pressure of the blood supply of the coronary vessels. Just as the effect of the negative step leap of the chest internal pressure in the course of inhale on the heart and arteries is similar to the effect of the counterpulsation of the pneumatophore(JABP)of the arteries on the air discharge of the pneumatophore at the time of the systole of the heart ,the positive step-leap of the chest internal pressure on the coronary vessels is similar to the effect of JABP air-filled ditalation. Therefore,this self-controlled step-leap respiration plays its own feedback role. Due to its specific design,it has a favourable effect on the function of the coronary vessels through effectively increasing the transmission of pressure from the chest pump to the heart pump. Researching observations in contrast were conducted on two groups of persons undergoing experiments (30 cases of healthy youths and 11 cases of chronic heart problem) concerning the function of their coronary vessels before and after the training. The data emanating from a color Doppler supersonic diagnostic instrument showed that the self-controlled step-leap respiration training could distinctly slow down the rhythms of the heart of one under experiment, mitigate the after load of the heart, increase the distolic pressure so as to increase the pressure of the entrance to the coronary vessels, increase the discharge amount at each pulsation and reduce the work function of the heart. It has a definite role to play in the improvement of the diastolic work of the left ventricle, the enhancement of the adaptability of the left ventricle and the improvement of the working condition of the right ventricle. At the same time, it can greatly mitigate such subjective symptoms as a sense of suppression in the chest, chest pain and shortness of breath for those suffering from obstruction of heart functions. Due to its features, such as its non-invasive nature, its non-medicinal nature and simple method, it undoubtedly provides an entirely new method for the recovery and treatment of the heart problems.