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--- ecg:hrv [2018/05/08 20:14]
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+++ ecg:hrv [2018/11/17 11:05] (current)
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+When you breathe in and out your heart rate changes which is called 'heart rate variability' (HRV) or more specifically 'respiratory sinus arrhythmia' (RSA). However, stress & anxiety reduces the heart variability:
+{{youtube>GcahOkY-2mU?rel=0}}
-{{youtube>GcahOkY-2mU?640x480}}
-When you breathe in and out your heart rate changes which is called 'heart rate variability' (HRV) or more specifically 'respiratory sinus arrhythmia' (RSA). However, stress & anxiety reduces the heart variability:
   * [[https://www.ncbi.nlm.nih.gov/pubmed/17069959|An autonomic flexibility-neurovisceral integration model of anxiety and cardiac vagal tone.]]

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