9/3/2023 0 Comments Heart monitor chest strapHowever, there are now some trackers that offer both ECG and optical monitoring for maximum versatility. Logging your heart’s electrical pulses is more accurate and immediate than measuring reflected light, which is why serious athletes tend to prefer chest strap heart rate monitors for training and competition. ECG heart rate monitors are based on medical-grade electrocardiogram technology and use electrodes pressed onto your skin to log your heart’s electrical activity. Optical heart rate monitors use green lights on the underside of the device, which your blood reflects to measure how fast it’s flowing through your veins and therefore how fast your heart is beating.
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