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Why is my vantage m2 watch detecting heart rate but can't calculate or dete t heart rate variability or breathing rate? It's d9ne that for 4 days now, I clean it everyday
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Heart rate variability biofeedback (HRV-B) using a breathing technique... | Download Scientific Diagram
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Recording of the heart rate variability with a heart rate monitor Polar... | Download Scientific Diagram
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Sensors | Free Full-Text | Validity of the Polar H7 Heart Rate Sensor for Heart Rate Variability Analysis during Exercise in Different Age, Body Composition and Fitness Level Groups
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