Sport Help calculating BLM, BMR...

[AnderJoy]

Hi!

I'm new here, and need help with figuring out my BLM and BMR for drafting a nutrition plan. I've got scales at home that measure your weight, fat %, lean body mass (muscle percentage?), bone weight, etc. According to the measures, my stats are the following (21 yo, female):

weight: 145.7 lbs fat %: 25.8 LBM %: 56.8

I converted the percentages and got the following:

62.9 lbs LBM 82.8 lbs fat

Now, I'm terrible at math, but these figures seem strange to me. I mean, can I really have 20 lbs more fat than muscles? (newbie here, be gentle )

Now, according to Katch formula, my BMR is 985.6 cal - 1528 TDEE. (which seems waaaay too low). According to Harris, it's 1698 cal - 2632 TDEE. Those are two totally different numbers - what's wrong?

Am I wrong in my calculations? If the Katch formula is supposed to the be most accurate, should I use 2632 TDEE as my starting point in drafting the nutrition plan?

Sorry for so many questions, but I really have no idea on what to do

 

[Skivvy9r]

You are unquestionably math challenged. Based on a weight of 145.7lbs and BF of 25.8%, you have 37.6lbs of fat. LBM of 56.8% translates to 82.8lbs. But if 25.8% is fat and 56.8% is LBM, what's the other 17.4%?

 

[malkore]

But if 25.8% is fat and 56.8% is LBM, what's the other 17.4%?

water, bones, etc. There are a lot of assumptions that can be made, as bone weight doesn't vary a ton between two similar sized people of the same gender.

and of course you're right, if 25.8% is fat, the rest is essentially Lean Body Mass which includes muscles, organs, water weight, bones, etc.