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

在这项研究中，我们重点研究了横隔肌的机械肌电图(MMG)，以开发一种新的呼吸功能测试方法。这种方法不同于传统的呼吸图呼吸功能测试，只需要从皮肤表面电刺激测量隔膜机械肌图。在老年人和年轻人的对比实验中，老年人的MMG波幅显著降低，并与口腔压力通气量(PImax和PEmax)和呼吸功能(VC、IRV和ERV)相关。因此，MMG能够直接测量横隔膜收缩，当与PEmax和PImax结合使用时，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.