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How reliable are heart rate data from smart watches?

2 min read

Asked by: Elizabeth Baker

One study reported that although there was no difference in heart rate accuracy, wearable devices recorded significantly fewer data points for people with darker skin. Most wearables detect heart rate and rhythm by aiming a beam of light at the wrist and then detecting how much light is absorbed.

Do smart watches accurately measure heart rate?

The accuracy of the wearables at detecting baseline heart rate within five bpm was 100 percent, 100 percent and 94 percent for Apple, Samsung and Fitbit, respectively.

How reliable is smart watch ECG?

The smart watch–generated ECGs were 93% to 95% accurate at correctly identifying and distinguishing between different types of heart attacks. Among the healthy people, the watch’s accuracy was 90% for correctly noting the absence of a heart attack. The findings were published online Aug. 31, 2020, by JAMA Cardiology.

Can a smartwatch detect heart problems?

Some specially designed smart watches are equipped with ECG (electrocardiogram) sensors built-in to continuously check heart activity via the wrist. Apple has conducted studies over the past few years evaluating whether or not these sensors can positively detect irregular heartbeats.

Which smart watch has most accurate heart monitor?

The Fitbit Versa is our top pick, as it features 24/7 heart rate monitoring, which tracks your heart health over time and always displays your current heart rate, whether you’re resting or exercising.

Does this smartwatch have the heart-rate monitor True or false?

A smartwatch comes with an optical heart rate sensor. It helps in monitoring your flow of blood from your heart.

Can Fitbit detect heart problems?

The Fitbit ECG app can’t detect heart attack, blood clots, stroke or other heart conditions. If you think you’re having a medical emergency, call emergency services. The Fitbit ECG app is not intended for use by people under 22 years old.

Can Apple Watch tell if your heart stops?

Apple Watch cannot detect heart attacks. If you ever experience chest pain, pressure, tightness, or what you think is a heart attack, call emergency services immediately. The irregular rhythm notification feature on Apple Watch is not constantly looking for AFib.