polar ft7 low heart readings

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jairo2
jairo2 Posts: 5 Member
in Fitness and Exercise
I bought my polar ft7 last Thursday and then I used it on friday, the readings of my heart rate where good from 90bpm too 150bpm and burned more than 500 calories in 1 hour and half but now doing the same exercise and the same intensity my heart rate readings are from 73bpm too 130bpm and burned 400 calories in 1 hour and 30 minutes, why is my polar giving me low numbers now?

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  • _Waffle_
    _Waffle_ Posts: 13,049 Member
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    Low battery or you didn't get the chest strap wet before using it. Yes, even if it's brand new, check the battery.
  • ksuh999
    ksuh999 Posts: 543 Member
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    Low battery will often give you crazy readings (like 220 BPM straight down to zero and back up again).

    Simple answer is that your second workout wasn't as intense.
  • jairo2
    jairo2 Posts: 5 Member
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    _Waffle_ wrote: »
    Low battery or you didn't get the chest strap wet before using it. Yes, even if it's brand new, check the battery.

    I always get the strap wet but I'm going to check out the battery.
  • jairo2
    jairo2 Posts: 5 Member
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    ksuh999 wrote: »
    Low battery will often give you crazy readings (like 220 BPM straight down to zero and back up again).

    Simple answer is that your second workout wasn't as intense.

    I used it on friday and Monday and they both where the same readings but Tuesday, Wednesday, yesterday and today it's just been low readings.
  • Spliner1969
    Spliner1969 Posts: 3,233 Member
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    I use this stuff: http://www.amazon.com/Spectra-360-Electrode-Gel-Laboratories/dp/B0093J2GM4/ref=sr_1_2?ie=UTF8&qid=1454710557&sr=8-2&keywords=electro+gel

    Works like a charm and two tubes of it will last for stinking ever (they are big tubes). Low battery has been the only time I had my H7 get wacky like that. I was buying batteries at the local Walmart (off-brand alkaline generic) that just weren't that great. After a month or so of use they'd get unreliable yet the battery would be "full" in the polar app. I changed them out with some Energizer brand batteries and two months later readings are still solid.

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