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TRI_BABE's Photo TRI_BABE Posts: 2,938
8/16/12 7:20 P

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Yeah I just made another post about the accuracy compared to other devices. Perhaps it is overestimating what I am burning during exercise by the 10%. It might not matter if a person doesn't exercise that much, but with a lot of exercise maybe the difference can be larger.

Also I exercise in the heat and humidity. I remember I ran one course on a hot, humid day and it said I burned around 126 calories per mile. The same course on a cooler day only registered around 96 per mile. So I wonder how the weather conditions factor into the accuracy as well.

On hot humid days you can sweat just being outside not even exerting yourself.



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GETFIT2LIVE's Photo GETFIT2LIVE Posts: 4,835
8/16/12 3:00 P

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The stats for these devices is that they are 90%+ accurate in estimating calorie burn, but that's an average; they can give us an idea of what our bodies are actually burning, not precision. If you're more interested in losing pounds than reducing body fat, you could probably safely increase your deficit some more. We are all an experiment of one (don't you hate that sometimes?), so you may need to keep experimenting with your calorie deficit to find the perfect balance. It's tough to do that when you're actively running so much--you have to fuel your muscles sufficiently for those long runs!

Denise (Half Fanatic #1279) - PDT Time Zone

"The greatest pleasure in life is doing what people say you cannot do."
- William Bagshot

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TRI_BABE's Photo TRI_BABE Posts: 2,938
8/16/12 2:19 P

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I'm a marathon runner and run 45+ miles a week and renovate a house full time. My calorie burns are very high, average 2800 per day (my BMR alone is only around 1250) but have been as high as 4K.

I don't know how accurate it is for people who workout a lot. I've worn it since April and not lost any weight. My body composition has changed - lost fat, gained muscle, but regardless I should have lost pounds by now. I don't lift weights outside of bodyweight exercises once a week, though my remodeling work takes strength.

It says my calorie deficit is around 600 per day. I measure my foods and have no problems with eating clean.

Some are concerned if I drop calories more it will be too much of a deficit but if the device is overestimating what I am burning then it would not be too much to reduce.

Edited by: TRI_BABE at: 8/16/2012 (14:20)

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