I'm thinking of using a strain gauge to detect the chest movements that occur during cough (to detect cough). The problem is that I'm not familiar to strain gauges, as I don't know how to implement it. I've done this using a piezoeletric with a elastic around the chest. How can I do something similar with a strain gauge? This is an example: https://www.researchgate.net/publication/304573549_Calibrating_Respiratory_Strain_Gauges_What_the_Numbers_Mean_for_Monitoring_Respiration but I don't know how it is done! Also read about mercury-in-rubber strain gauges..