• support@fourthfrontier.com
  • Hi, when does a week start/end for the app? When it says “you’re (not) on target for the week”

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  • Does anyone know what the blue chest strap is for, supplied as standard along with a black chest strap which I am currently using?

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    • The Blue and Black straps are identical, other than the color there is no difference both are medium to double extra large size. They supply you with 2 straps in case you damage one you have a spare while you order another. I use the blue strap and let my wife use the black strap when we go to the track, I will do my sprints and when i am done, I…Read More

  • Is there a way to change the max heart rate value from 210. I know what mine is it 170?

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    • I, if you find out I also would be interested in making this change? P

    • Please elaborate further, If you are referring to Alerts, you can set a single buzz or double buzz alarm to notify you if your heart rate goes above or below the limit that you choose. The full range for the alert can be from 0 to 255. so you can set your alert at 170 with an upper limit if you want the alert to buzz when you reach or pass the 170…Read More

    • You just slide along the heart rate bar.

    • If what you are saying, changing heart rate max so zones would represent that, I love to see that.

  • Hello,

    I’m brand new to the forum and was hoping someone might give me some insight as to what I’m seeing here. Im a 60 yr old competitive cyclist who’s been experiencing HR spikes with my usual HRM. I purchased an Frontier X to see what is actually going on. It appears to be some type of tachycardia as its in the 200 bpm+ range. Any ideas??

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    • well, from the screenshot it does not look like you heart rate passed 166, try to capture the tachycardia event with the X2 but 200+ bpm spike could be triggered by anxiety, the key would be to notice how quickly your Bpm goes back down, for example if you slow down or stop and your heart is in tachycardia mode it most likely won’t stop after a…Read More

    • Go see a cardiologist and take your ECG graph with you.

  • Thanks for the device it’s quite reassuring.

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