M@L has given you a great answer. It's not a scientific formula because there are so many variables involved, just very rough estimates based on some research and looking at what other sites have used.
Sorry I don't have a more specific answer for you!
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."
the reason i'm asking is that for the longest time, a lot of Spark members & also the folks who run the site felt that calories weren't something that could be measured as so many variables go into strength training
so .... i'm curious as to how they went about developing this.
If you want to walk on water, you have to get out of the boat. (auth unk)
I don't think there is much formula about it at all. It doesn't really seem to vary much between large and small muscles, or vary by weight, number of reps, etc.
But one well known study puts the metabolic gain from a regular program of lifting at about 150 calories per day. The very rough calorie estimates from Spark would give you something broadly consistent with this.
I don't think there is much scientific rigour about it, but if it encourages people to take up ST, well, its something I can live with.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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