Fig. 1From: Ventricular late potentials measured by signal-averaged electrocardiogram in young professional soccer playersVentricular late potential detected by signal averaged electrocardiography. Arrow indicates ventricular late potential. This subject showed filtered QRS duration = 127 ms, duration of low amplitude late potential < 40 uV = 51 ms, and root-mean-square voltage in terminal 40 ms = 17 uVBack to article page