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临床上用调控呼吸的训练方法可使冠心病患者的症状明显减轻，心功能增强，这可能是主要通过降低胸膜腔内压（以下简称胸内压），促进了冠脉血流，改善了心肌缺血来实现的。本实验为验证此设想的真实性，对８只狗从胸膜腔反复抽气推气，造成胸内压的较大变化，以模拟深吸气动作所致的胸内压变化。结果发现：胸内压下降时，冠脉流量增大，同时发现冠脉流量的增加主要是由于右心房压明显下降，主动脉压稍有升高，而致冠脉循环的输入端和输出端压力差增大。这就为临床上调控呼吸改善心功能提供了实验依据。
Clinically, the training method of regulating respiration can significantly reduce the symptoms of patients with coronary heart disease, cardiac function increased, which may be mainly through the reduction of intrapleural pressure (hereinafter referred to as intrathoracic pressure), to promote coronary blood flow, improve myocardial Ischemia to achieve. The experiment to verify the authenticity of this idea, the 8 dogs from the pleural cavity repeatedly pumping gas, resulting in greater changes in intrathoracic pressure to simulate deep inspiration movements caused by changes in intrathoracic pressure. The results showed that when the intrathoracic pressure decreased, the coronary flow increased. At the same time, it was found that the increase of coronary flow was mainly due to the significant decrease of the right atrial pressure and the slight increase of the aortic pressure, which caused the input and output of the coronary circulation Pressure difference increases. This provides an experimental basis for the clinical regulation of respiration to improve cardiac function.