I wanted to get an idea of the number of calories I'm burning while I'm on that bastard of a cross-trainer. I know that whatever number I get, it's not likely to be all that accurate, and I also know that the number of calories burned when I'm not exercising is much more important than the number I'm burning when I am. But still, I'd like to have a number, even if it's not all that accurate. And since I've been doing Weight Watchers for a year, and working in Points instead of calories, I really had no idea. So I checked a couple of different sources, and got a different numbers for all of them.
First, I worked it out myself, based on an equation that is if not the same, then at least very similar to the one I learned back when I was taking a fitness class at the University of Houston. According to that formula, my 35 minutes on the elliptical burned 643.125 calories, which I'm rounding to 640.
Then I went to CalorieKing, a site I've been using for years. It said 602, which I'm rounding to 600.
At SparkPeople, a site I joined a year or so ago and never really did much with, it says 740.
And my RunKeeper app says it's 679 calories, which I'm rounding to 680.
That's a pretty big spread, but it averages out at 665, which puts RunKeeper the closest to the average, so for now I think I'll go with that. If that's anywhere close to right, then with a resting metabolic rate of around 3000 cals a day, I should end up with a pretty significant calorie deficiency each day. If I get through the week, and if this works the way it's supposed to, I should see at least a kg of weight-loss for the first week.
I was losing more than that each week when I first started Weight Watchers, so I'm hoping for something a bit more radical, but a kilo ain't nothing to sneeze at, and I'll be looking at other things in addition to weight-loss.
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