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. 2022 Jan 18;13:358. doi: 10.1038/s41467-022-28027-y

Fig. 5. Skin adhesion and electromyography (EMG) monitoring of human exercises by using SACP electrodes.

Fig. 5

a–b Adhesion of films on joints of fingers (a) and skin of arm (b). c Images of skin texture patterned on an SACP film after peeling off from the skin. d Images of SACP films adhered on the skin under distorting. e Interface connection between skin and flexible printed wires. f Image of an EMG test: SACP film electrodes were attached to the skin near the muscle, and gripping forces were displayed by a dynamometer. g Comparison of EMG signals by using commercial Ag/AgCl electrode (red line) and SACP film (black line). h–i EMG signals (h) and peak-to-peak value (i) under different gripping forces. j–k Stability of EMG signals (j) and corresponding peak to peak values (k) under repeated using test. The error bars show the standard deviations from at least three tests. l Detection of body exercises from EMG signal and the corresponding images (inset), jumping (i), squatting (ii), dumbbell lifting (iii), and push-up (iv).