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Katch-McArdle formula estimates basal metabolic rate using lean body mass. It's more accurate in muscular or obese individuals.
Formel
First calculate lean body mass (LBM = weight × (100 - %bodyfat) / 100)
- LBM
- weight × (100 - %bodyfat) / 100) — weight × (100 - %bodyfat) / 100)
Schritt-für-Schritt-Anleitung
- 1First calculate lean body mass (LBM = weight × (100 - %bodyfat) / 100)
- 2Then: BMR = 370 + (21.6 × LBM in kg)
- 3More accurate than weight-only formulas
Gelöste Beispiele
Eingabe
80 kg, 20% body fat
Ergebnis
LBM = 64 kg, BMR = 1755 kcal/day
Accounts for body composition
Häufige Fehler vermeiden
- ✕Using inaccurate body fat estimates
- ✕Forgetting that BMR increases with muscle mass
Häufig gestellte Fragen
When is Katch-McArdle better than Harris-Benedict?
In individuals with unusual body composition: very lean athletes or obese patients.
How accurate is body fat estimation?
Accuracy varies 3-5%; bioimpedance, DEXA, or calipers best. Visual estimation inaccurate.
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