“…Disruption of electrical continuity or a 150% rise in the resistance over the initial resistance value constitutes failure [ 74 ]. While researchers are working to standardize testing methodologies for some internal wearable sensors [ 74 ], fatigue testing methods for external wearable sensors are not standardized [ 40 ], and a variety of testing methodologies, rates, and cycling regimes have been reported in the fatigue testing of proposed wearable sensors [ 6 , 11 , 12 , 13 , 20 , 21 , 30 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 ].…”