• frontierheartforum@fourthfrontier.com
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Smart Heart Seminar

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  • 5 days, 11 hours ago
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  • Hello! Could you explain to me the meaning of negative level of QRS wave in the second graph? Could it be a signal error? Thanks!

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  • How do I figure out my true (err on the side of safe) max heart rate? I’m not an athlete. I regularly exceed 175 (220 – 45yo). I just did a 20 minute functional threshold performance test on my peloton. I was definitely huffing and puffing at the end. My heart rate reached 187 and my breathing rate was very high at 59 while my max heart strain was…Read More

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    • The 220 minus age formula is next to useless. For example, I’m 60 yrs old with a max HR of 196, yet I know others my age with 160 bpm max.
      I’m not able to hit my max HR during 20 min critical power test, that requires a shorter, more intense effort. So I would imagine your Max HR is still going to be higher than 187, perhaps by as much as 10-…Read More

  • Thanks for the device it’s quite reassuring.

  • After work outs, when I view the graphs for analysis, I always notice a faded grey ish vertical line on the graph and I don’t know what that means? Is this just me or do anyone else see the line?

    By the way, I love the analysis and the details I get from the device. It’s been very helpful to help me train better. Also the shocks alert is…Read More

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    • It’s possible that the data quality of your workouts is poor due to wearing the device incorrectly, or not wetting the strap of the Frontier X2. I’m sorry for the inconvenience. Here is a short video explaining the process of wearing the Frontier X2 correctly, and ensuring good data quality: https://youtu.be/NQYdRyHalyI

      If you don’t have time to…Read More

  • Hi,
    How can I see breathing rate? Can the Apple Watch show this or is there any other device that will work?

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    • The value shown as ‘ Effort’ during your activity is the same as your breathing. You will notice that the unit for this value is breaths/min. We are using breathing rate as a measurement of effort because there is a lot of research to show that breathing rate is more closely correlated with perceived effort than heart rate.

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