Jinsi ya kukokotoa Lean Body Mass
Lean Body Mass ni nini?
Lean Body Mass (LBM) is total body weight minus fat mass. It includes muscle, bone, organs, and water. Used in clinical dosing, fitness tracking, and metabolic rate estimation.
Fomula
LBM (kg) = Weight × (1 − body_fat%/100); LBM (men) = 1.1 × weight − 4.8 × height (simplified)
- BW
- Body weight (kg)
- %BF
- Body fat percentage (%)
- LBM
- Lean Body Mass (kg)
Mwongozo wa Hatua kwa Hatua
- 1LBM = Total weight × (1 − body fat fraction)
- 2Boer formula (men): LBM = 0.407×W + 0.267×H − 19.2
- 3Boer formula (women): LBM = 0.252×W + 0.473×H − 48.3
- 4James formula alternative: LBM(men) = 1.1×W − 128×(W/H)²
Mifano Iliyotatuliwa
Ingizo
80kg total, 20% body fat
Matokeo
LBM = 80 × (1−0.20) = 64 kg lean mass
Maswali yanayoulizwa mara kwa mara
What is lean body mass?
Everything except fat: muscle, bone, water, organs. More useful than total weight for athletic performance.
Why is LBM important?
Determines calories for maintenance, strength capacity, metabolic rate. Athletes focus on LBM, not total weight.
Can LBM increase without weight gain?
Yes—if muscle increases and fat decreases (same weight). Requires resistance training and good nutrition.