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HRM accurate?

Thursday, July 07, 2011

So, I got my new heart rate monitor on Monday and have been testing it with various exercise activities I do.

I'm wondering if it's actually accurate and looking for comments from other folks that use one.

I have been estimating, based on SP's calculator and other online calculators, that 1 hour of Jazzercise, for instance, burns about 450 calories for a high intensity session. While wearing my HRM yesterday and today, I had "calories burned" reported at 864 and 906 for the 1 hour session. I was working moderately hard, within what I consider to be an acceptable beats per minute zone.

This seems to be really off from what the calculators I've been using have reported.

It makes me wonder, have I been underestimating my burn all this time and thus, under-eating when I was in a losing weight program, putting myself in to starvation mode? It could certainly explain a lot.

I posted a link to the model I purchased in my last blog - it's a Timex Ironman Digital Zone HRM.

So, I would love to get some thoughts on this. Do you use a heart rate monitor? Do you think they more accurately estimate your true calorie burn for exercise? Thanks!
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Member Comments About This Blog Post
    My HRM always said I burned more than when I did the estimate on SP or any other site. Did you plug in your current weight accurately? That could also be throwing you off if SP still has you at weighing what you did before your pregnancy. I trust the HRM more than I trust the estimate though. :)
    2847 days ago
    the only thing i can think of....is that you now weigh more than you did before, so you're going to burn more cals. plus-during pregnancy your hr is higher....so maybe with the combination of the two your not that far off?
    2847 days ago
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