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What’s the difference between Max strain and Heart strain? They are always very different numbers. What’s the connection?
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My HRV seems to be very low – about 4ms on average. I am fit and healthy and do mainly cycling – just done 4 hours at 185W output which I think is decent fitness. HR between 62 and 136 for those 4 hours with average of 120. All my stats seem fine except the HRV which seems extremely low. Should I be concerned? Can I do anything about it?
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Hi Nick,
Thank you for reaching out to us.
Heart Rate Variability is a measure of the variation of time in between each of your heart beats. These variations happen due to the interaction between two parts of your autonomic nervous system – Sympathetic ( Fight or Flight) and the opposing Parasympathetic (Rest and Relax) system.
The Frontier X…Read More
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Hey Nick, I am a cyclist as well and find the same thing. My HRV is low through activitiy. Usually increases when resting or sleep.
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Hi Nick, apologies if you already know this .. but the way hrv is mathematically calculated means that there is an inverse (but non linear) relationship between HR and HRV – i.e. it’s quite normal for HRV to go down when you exercise and up when you are resting – just on the basis of the fact that your underlying heart rate is higher in teh former…Read More
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Having to get an Angiogram on Thursday to determine why my heart is failing. They can’t determine what’s causing the EF to be at 35-38% with no structural abnormalities, scarring, or valvular issues.
Hope it can be fixed.
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![Profile picture of Allanklu]()
Good question, let us know.
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![Profile picture of Community Manager]()
Thank you for your query.
To set up your device for a 24-hour ECG recording, please refer to the link below for detailed instructions:
https://fourthfrontier.tawk.help/article/5-recording-a-workout-continuous-ecgLet us know if you need further assistance.
Fourth Frontier Support Team
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How do i change the ecg recording time from 1 hour to longer recording times?
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Hi Nick,
Thank you for reaching out.
You can find information in the following link:
Can you share an ECG stream for a full workout or is it just the first 3 minutes?
Please let me know if you need any further assistance!
Thank you.
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Max Heart Strain represents the peak value of Heart Strain recorded during each workout. Heart Strain is a measurement based on the ST-segment deviation recorded by the Frontier X from the CC5 Lead position. This deviation could be influenced by factors such as oxygen deprivation to a part of your…Read More