View Full Version : Calculating BMR

08-10-2005, 12:52 PM
When ballparking BMR should you use your total body weight or your lean body mass?

For a lark I punched in my LBM (assuming a BF of 30% which is dead on, a few percent high, or 18% low depending who you talk to) to Fitday and my BMR + lifestyle yielded a maintenance of 2000.

Which is what I've been trying to maintain for a few weeks now and not really lost a pound (but look bigger in most muscle groups). Co-incidence?

08-10-2005, 01:03 PM
Formulas are vague guidelines. If you want something more accurate, track your calories for 1-2 weeks. If your weight stays the same, use the daily average for those 1-2 weeks as your maintenance number.

08-10-2005, 01:34 PM
I did. It came out to a 1900 maintenance @180 lb. It just seems a little low for a maintenance compared to other people's diets around here. It's consistant with Fitday's estimate based on LBM alone... part of why I noticed and asked.

08-10-2005, 01:41 PM
If you tracked your calories and it says 1900 @ 180lbs, then it is what it is.

08-10-2005, 01:45 PM
Guess my family's metabolism IS turtle-slow after all. Definitely good to know.

So if I maintain 1900 but continue to do WBB1 will I start to burn body fat percentage because my muscles will (theoretically) be more demanding? People swear I've lost weight, despite what the scales say, because my face and biceps are looking more defined.

08-10-2005, 01:55 PM
You could be going through a recomposition. Meaning you're gaining muscle and losing fat at the same time. So the scale says the same thing, but the mirror doesn't.

08-10-2005, 02:00 PM
That's my hope. So keep it at 1900 until one of: Stop getting stronger, start losing weight, start gaining weight occurs?