HRM to Determine BMR?

iAMsmiling
iAMsmiling Posts: 2,394 Member
edited January 1 in Fitness and Exercise
Just thinking of getting a Fitbit to help nail my actual BMR, when it occurred to me that I could just wear an HRM for 24 hours for a couple of days.

Wouldn't that work better?

Replies

  • mgobluetx12
    mgobluetx12 Posts: 1,326 Member
    That would work, but mine would drive me crazy...beeping at me the whole time because I'm not in 'the zone.'
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    Mine just sends data to my iphone. No problems there.
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    Anyone else have an opinion on this?
  • elprincipito
    elprincipito Posts: 1,200 Member
    i did it. got 2600 on an off day. Might have been accurate... because I eat 2100 to 2000 cals to lose.
  • justlistening
    justlistening Posts: 249 Member
    It is my understanding that HRM's only estimate your calorie burn given your heart rate, age, gender etc. And they are more accurate during moderate to intense exercise. I'm not sure how accurate they would be for other times. I had a similar thought so I googled it before deciding it would not work well.
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    I've put it on.
    Won't cost me more than a day to figure it out. Problem is, I don't know when I'll have a "normal" inactive day next. At the gym tomorrow, at the beach over the weekend.
  • mlb929
    mlb929 Posts: 1,974 Member
    I've so wondered the same thing. I would need to do it for a week and "average" based upon my activities since they change from day to day. Would you pick an "inactive" day just to get a base sans exercise - or would it be better to include exercise and not eat your calories back?
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    1 hour, 20 minutes in to it and I'm already having my doubts.

    Doing almost nothing, sitting around, brief trip to the store...I'm averaging 5 calories per minute.

    5 calories per minute X 60 minutes =300 calories per hour
    300 calories per hour x 24 hours = 7,200 calories per day.

    That's crazy.

    Am I missing something?

    Adding....

    Ok, Actually just sitting is about 3 calories or less per minute. So, desk time and sleep time will take off dramatically from my total.
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    I've so wondered the same thing. I would need to do it for a week and "average" based upon my activities since they change from day to day. Would you pick an "inactive" day just to get a base sans exercise - or would it be better to include exercise and not eat your calories back?

    Since I wear my HRM for exercise, I'd pick an inactive day for a baseline, then add the calories burned during exercise. Not sure about eating back your calories. I just started eating back half.
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    14+ hours of wearing the HRM.
    More than half of that was sleeping. No exercising.

    So far...

    2150 calories
    61 bpm avg heart rate

    As I sit at my desk, my at rest HR hovers between 55 and 60 bpm.
  • iAMsmiling
    iAMsmiling Posts: 2,394 Member
    4000 calories, not counting exercise.

    That's what I come up with. Seems very high.
  • Helloitsdan
    Helloitsdan Posts: 5,561 Member
    I love my fitbit and with the new ones at only $50!
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