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    CRAFTY_LOSER   18,377
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Which is more accurate?

Tuesday, January 29, 2013

SP calorie burn or a heart rate monitor?

When I first started out on this journey I used SP's fitness tracker and took what they said I burned in calories as being correct. However, I just got a HRM for Christmas and I've been using it to calculate my calories burned (darn thing doesn't actually TELL me, I have to figure it out on my own...ugh).

Well, this morning I decided to compare the two. SP said that 20 minutes of low impact cardio burned 230 calories. Where as with my HRM and my average heart rate...I burned 120 calories.

Say what? That's a 110 calorie difference!

Now, I lost a lot of weight when just doing the SP thing...so how wrong CAN it be if I was losing weight on it? Which should I trust more? SP or my own heart rate? Do you guys use HRMs? Are they a waste of time? I just don't know anymore. Ugh.

I'm starting back up on this journey and I want to be as accurate as possible with this. So does anyone have any experience with using a HRM? Mine's a Mio Motion HRM.
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  Member Comments About This Blog Post:

DAUGHTEROFTWIN 1/30/2013 9:43AM

    I second Lisa's comment. I have a watch/HRM that calculates the calories burned for me--based on my age etc. It frequently calculates higher than SP.

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LISAMG1220 1/30/2013 9:19AM

    I have wondered that myself. I have a wrist HRM and the calorie burn is always higher that SP estimates.

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BARBARASDIET 1/29/2013 3:24PM

    I would go with the monitor. SP tells you that their numbers are estimates.

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EMMACORY 1/29/2013 9:30AM

    I am not much help here. I know that when I use the treadmill at the gym what they say I burn is close to what SP says. However when I plug in my water jogging number the amount of calories that SP says I burn...I don't quite believe it! I always thought that if people were following the program and there was not much progress that something is off. SP can't measure your level of intensity and that does change the outcome. I will be interested in seeing what other folks have to say.

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2008GINA 1/29/2013 8:01AM

    My gym really pushes the use of HRMs, so I have one (although not the one they push, one I bought online). They do stress, though, that the calorie burn can be way off, depending on how it is set up. Their focus is using it for interval training, for increased cardio capacity. Mine seems to read high -- always tells me for an hour workout, I'm burning 900-1100 calories, and that's hard to believe, even though I'm still a large person, so I stopped really looking at it. I still like having it, for the interval training. Hope that helps!

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