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(a) A picture of a volunteer user wearing TTE on skin during test on humans and interconnections with Shimmer unit used for tests. A breathing thermistor was used for comparison. (b) Impedance variation measurements during a series of standardised routines simulating the daily human real life activities (i.e., walking) and comparison between the impedance variation acquired by TTE (top) and breathing measured through a thermistor placed close the nose (bottom).
