That increases if you are heavy. So, walking or running one mile burns more.
I figured that would be the case, just makes sense.
According to the machine, I'll burn about 260-288 during the 30 minutes. I am POSITIVE it isn't accurate, just an estimate but at least it gives me a reference. And Thanks JJ.
And actually my hip (the right one gives me fits sometimes) hasn't been hurting near as much as it did just a month ago.