Development of new respiratory function test using electrical induced mechanomyogram of diaphragm

本研究以膈肌机械运动图（MMG）为研究对象，旨在开发一种新的呼吸功能检测方法。该方法与使用常规肺量图的呼吸功能测试不同，仅需通过皮肤表面的电刺激来测量膈肌机械肌电图。在老年人和青年人的对比实验中，老年人的MMG振幅显著降低，并从口压通气（PImax和PEmax）和呼吸功能（VC、IRV和ERV）观察相关性。因此，MMG能够直接测量膈肌收缩，当与PEmax和PImax结合时，可以提供更详细的呼吸肌功能评估。

In this study, we focused on the Mechanomyogram (MMG) of the diaphragm in order to develop a new respiratory function tests. This method is different from the respiratory function test using a conventional spirogram, and only needs to measure the diaphragm mechanomyogram by electrical stimulation from the skin surface. In comparative experiments for the elderly and young people, MMG amplitude of the elderly decreased significantly, and correlation was observed from mouth pressure ventilation (PImax and PEmax) and respiratory function (VC, IRV and ERV). Therefore, MMGs are able to directly measure diaphragm contractions, and when combined with PEmax and PImax, could offer a more detailed evaluation of respiratory muscle function.