hahahahaha, i'm sorry Justin, no offense but 1000 calories burned is bullshit, come on now.
It's not my equations, not at all.
There are base guidelines utilizing oxygen uptake analysis on millions of individuals over years. In school we did these tests on ourselves in lab to measure our energy expenditure. When the body "burns" food to produce energy, oxygen is used and carbon dioxide and heat are produced. You can measure the amount of calories burned in activities by measuring either of these 3 things.
Some places can actually do a "room calorometer" (or some name like that) where studies will remain in a room for several days and the amount of heat produced by the body is determined by measuring how much heat is absorbed by the surrounding walls....so there are some accurate data in the guidelines that are used.
Whether or not these guidelines take into account the amount of calories that hte person's basal metabolic rate would have burned, I don't know.
But, that is abou the amount that any cheap internet site will give you for a 275lb man
Is it correct? I don't know, but thats what they'll say.