Photoplethysmography Heart Rate Tracking
This is a news story, published by Live Science, that relates primarily to BP news.
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Heart rate trackingLive Science
•Health
Health
How do fitness trackers measure your heart rate?
72% Informative
Smart wearables can help you determine if you exercised hard enough, rested well during sleep or stressed too much during the day .
Most fitness watches and smart rings depend on a technique called photoplethysmography (PPG) PPG uses optical sensors that detect heart rate by measuring changes in the volume of blood flowing through tiny blood vessels in the skin and underlying connective tissue.
PPG fitness trackers can be useful for monitoring heart rate in people with certain cardiovascular conditions.
The current industry gold standards of blood pressure and heart rate assessment are the manual sphygmomanometer ( BP cuff) and the electrocardiogram.
Experts agree that PPG-based heart rate readings should never be regarded as a substitute for clinically validated tests conducted by healthcare professionals.
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