I wonder how reliable heart rate sensors in smartwatches are compared to actual ECG devices? Especially during exercise or for people with arrhythmias, what factors affect accuracy? Do you have any experience with this? What kind of data should we pay attention to in these cases? 🤔
How reliable is heart rate measurement on smartwatches?
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Smartwatches generally provide highly reliable heart rate measurements, but they aren’t as precise as a real ECG—especially during movement or if you have an arrhythmia. Based on my own data, I noticed that my device lagged slightly during a stress test. Have any of you compared different brands to see how they perform?