Setup Polar HRM for more accurate calorie burn for known BMR

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Replies

  • Livin_Large
    Livin_Large Posts: 104 Member
    bump
  • tangiesharp
    tangiesharp Posts: 315 Member
    bump for later
  • laursey
    laursey Posts: 307
    Bump just got an HRM and was wondering about that.
  • Bumping f'later.
  • Zombriana
    Zombriana Posts: 764 Member
    Soo...
    I'm 24. My BMR was 1389, bf% of 18.3 which puts me to 1405 and my new age to 20.
    Then for my new weight instead of 129 it should be 85lbs to make my net 1200?

    Is this to make your burns less if you are trying to lose slower, or make them more accurate.
    So complicated!
  • stephreed11
    stephreed11 Posts: 158 Member
    If I did this correct, I have the metabolism of a 38 yr old...& I'm 24. This makes me sad.
    So I should put age 38 into my Polar FT4 instead of 24? Is that correct?
  • heybales
    heybales Posts: 18,842 Member
    I usually net 900-1000, but I EAT 1400 to 1500 calories, and just don't eat back my exercise calories. I have lost 130 lbs with no plateaus doing this, have a ton of energy etc, so I am reluctant to change anything at this point. I am also on the short side at a smidgen over 5´ Of course maybe my HRM is over stating what I burn and there fore I am eating more, who knows. *lol*

    So your BMR is probably below 1200 actually, so you are hitting.

    And your HRM overestimating your burn, if that has caused you to eat more, has probably kept you from lowering it at all or that bad.

    That's why you could adjust for a week and see that probably, you aren't creating that small of a NET, probably closer to 1100-1200, in which case, depending on your body comp BMR, you may actually be using the upper steps for correction.
  • ericarae33
    ericarae33 Posts: 211 Member
    I got lost at #4....I know my BF% from my trainer at the gym....but I don't understand #4...
    Im 33 yrs old, 5'3, and body fat is 22%, current weight 127
  • heybales
    heybales Posts: 18,842 Member
    Soo...
    I'm 24. My BMR was 1389, bf% of 18.3 which puts me to 1405 and my new age to 20.
    Then for my new weight instead of 129 it should be 85lbs to make my net 1200?

    Is this to make your burns less if you are trying to lose slower, or make them more accurate.
    So complicated!

    This has nothing to do with how much you burn. But to know better what you really are.
    This is if you eat back exercise calories and want it to be more accurate.
    If you have suppressed your BMR, you are already burning less no matter what the HRM says. In fact eating more would probably help in that regard, but some want to lose slower, so thought I'd support that effort.

    So you are combining the 2 methods which is not right.
    If you really do eat or NET at 1350, then only use the second one. Because the estimated BMR figure is meaningless, because you made your own BMR figure at 1350.

    But that is interesting, you could have a BMR of 1405 if it was fed enough. Mighty close..

    So, if you really do eat at 1350 and normally eat back your exercise calories, your BMR estimate of 1405 could be right on.
    You are in one of those gray areas. Accidentally protecting yourself.

    I would actually put your age to 20, and rest of the stats correct.

    And really be good about eating back those exercise calories, because you are burning more than you knew! And you want to keep it that way.
  • heybales
    heybales Posts: 18,842 Member
    If I did this correct, I have the metabolism of a 38 yr old...& I'm 24. This makes me sad.
    So I should put age 38 into my Polar FT4 instead of 24? Is that correct?

    That just means you have the body composition - right now, of a 38 yr old with avg BF%.

    Since you are working out - measure again in a month. May have lost BF%, and you'll be younger!

    But if you do the HR tests, you may be younger in that way still.
  • stephreed11
    stephreed11 Posts: 158 Member
    If I did this correct, I have the metabolism of a 38 yr old...& I'm 24. This makes me sad.
    So I should put age 38 into my Polar FT4 instead of 24? Is that correct?

    That just means you have the body composition - right now, of a 38 yr old with avg BF%.

    Since you are working out - measure again in a month. May have lost BF%, and you'll be younger!

    But if you do the HR tests, you may be younger in that way still.

    Okay, changing it now. I've read many of your forum posts/responses to know that you do your research & know what you're talking about. Thank you for sharing your knowledge with us! I appreciate it.
  • krissypea79
    krissypea79 Posts: 362 Member
    bump for later. thank you!
  • Zombriana
    Zombriana Posts: 764 Member
    Okay awesome. I didn't mean to make it sound like i was putting them together. lol. 85lbs and 20 years old? No way!!
    I've been netting really close to 1350, thats what i set my daily goal to. I eat my calories back 75% of the time, cuz food is awesome.

    I was pretty stoked that the Covet xxxxxxxx bf% said I had 18.3! Pretty nuts. And that my BMR raised because of it.
    Is 1350 pretty good or should i raise it up to 1400?
  • MrsDrake678
    MrsDrake678 Posts: 90 Member
    bump
  • heybales
    heybales Posts: 18,842 Member
    Okay awesome. I didn't mean to make it sound like i was putting them together. lol. 85lbs and 20 years old? No way!!
    I've been netting really close to 1350, thats what i set my daily goal to. I eat my calories back 75% of the time, cuz food is awesome.

    I was pretty stoked that the Covet xxxxxxxx bf% said I had 18.3! Pretty nuts. And that my BMR raised because of it.
    Is 1350 pretty good or should i raise it up to 1400?

    Shoot, you got more muscle mass than other BMR calc's think, might as well feed what it can do!
    1400.
  • astovey
    astovey Posts: 578 Member
    Bump
  • Zombriana
    Zombriana Posts: 764 Member
    Okay awesome. I didn't mean to make it sound like i was putting them together. lol. 85lbs and 20 years old? No way!!
    I've been netting really close to 1350, thats what i set my daily goal to. I eat my calories back 75% of the time, cuz food is awesome.

    I was pretty stoked that the Covet xxxxxxxx bf% said I had 18.3! Pretty nuts. And that my BMR raised because of it.
    Is 1350 pretty good or should i raise it up to 1400?

    Shoot, you got more muscle mass than other BMR calc's think, might as well feed what it can do!
    1400.

    Daang. I feel so mighty! LOL.
    Thanks so much! I'm glad I found this, I haven't lost a single pound in the past month!
    You, sir, are the best. :)
  • lmd172
    lmd172 Posts: 172
    bump
  • bump.... :)
  • Woohooo! I'm 25!!!
  • cardbucfan
    cardbucfan Posts: 10,571 Member
    Bmp
  • ericarae33
    ericarae33 Posts: 211 Member
    I'm still confused, please help, my BMR is 393 so that means I'm 78???
    **nevermind I can't read** LOL
  • Bump
  • lilsassymom
    lilsassymom Posts: 407 Member
    bump to read later:flowerforyou: .
  • Masterdo
    Masterdo Posts: 331 Member
    Saving for later too.
  • heybales
    heybales Posts: 18,842 Member
    Woohooo! I'm 25!!!

    Well, you have the Lean Body Mass of avg 25 yr old per BMR calc.

    Wait, that's great too! Woohoo.
  • JaneP2011
    JaneP2011 Posts: 65 Member
    Bump - great info :-)
  • kschr201
    kschr201 Posts: 208 Member
    This is great info but any particular reason you use the covert bf%?

    I only ask because I have a big difference between my military bf% and covert...I guess I don't want to make things worse by changing the numbers.
  • heybales
    heybales Posts: 18,842 Member
    This is great info but any particular reason you use the covert bf%?

    I only ask because I have a big difference between my military bf% and covert...I guess I don't want to make things worse by changing the numbers.

    Just that it uses the most site measurements in it's calc, 6, plus gender/age/weight. Which allows greater accuracy.

    The military calc only uses 3 measurements. Plus gender/height/weight.

    Plus when you measure 10lb down the road, better encouragement for other loses seen.

    Andy actually, I should probably say re-measure at 5lb loss. Because using a HRM probably means likely to be working out a lot, so body improvements besides weight loss may be going on.
  • rmk20togo
    rmk20togo Posts: 353 Member
    Here are my numbers:

    Navy Women Only
    BF 28.7
    BRM 1525
    Age 32

    Covert Bailey
    BF 23.25
    BMR 1613
    Age 13 :noway:

    If I use the average I get:
    BF 25.98%
    BMR 1569
    Age 30

    I'm 51 years old. I do work out A LOT and, except for 15 extra pounds, I'm in good shape for my age, but holy cow - 23.25% BF.

    So, my HRM thinks I'm 165#, 5'6" and 51 right now. Does this mean I'm actually burning more or less calories than my HRM says?

    I can barely balance my checkbook and this calculation made my head hurt. In the 50 days I been using MFP, I've only netted over the above calculated BMR on 5 days. I may have to take a nap before I try the step two calculations.


    LOVE THIS POST! :love: :love: