Lean mass Weight

April 6, 2017
PHP Edge.com - Perfecting
gives out the estimated Lean Body Mass (LBM) based on body weight, height, gender, and age. The Lean Body Mass Calculator provides the results of all the popular formulas for comparison purposes.

Result

The Boer Formula Result: 127.4 lbs

The James Formula Result: 129.0 lbs

The Hume Formula Result: 120.4 lbs


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Reference

The Lean Body Mass (LBM) is a part of the body. It is normally defined to be the body weight minus the body fat. Typically lean body mass is 60-90% of the total body mass. Normally, men have higher port of lean body mass than women. Some anaesthetic agents dosage, especially water-soluble drugs, are routinely based on the lean body mass value. Many formulas have been developed in the past for the estimation of the lean body mass. The following are some of them. This calculator gives out result for all the fitting formulas.

Lean Body Mass Formula for Adults

The Boer Formula:

  • Men: eLBM = 0.407weight(kg) + 0.267height(cm) - 19.2
    Women: eLBM = 0.252weight(kg) + 0.473height(cm) - 48.3

    Boer P. "Estimated lean body mass as an index for normalization of body fluid volumes in man." Am J Physiol 1984; 247: F632-5

The James Formula:

  • Men: eLBM = 1.1weight(kg) - 128(weight(kg)/height(cm))2
    Women: eLBM = 1.07weight(kg) - 148(weight(kg)/height(cm))2

    Absalom AR, Mani V, DeSmet T, et al. "Pharmacokinetic models for propofol-defining and illuminating the devil in the detail." Br J Anaesth 2009; 103:26-37

The Hume Formula:

  • Men: eLBM = 0.32810weight(kg) + 0.33929height(cm) - 29.5336
    Women: eLBM = 0.29569weight(kg) + 0.41813height(cm) - 43.2933

    Hume, R "Prediction of lean body mass from height and weight.". J Clin Pathol. 1966 Jul; 19(4):389-91.

Lean Body Mass Formula for Children

The Peters Formula:

  • The author suggested that this formula fit for children of 13-14 years old or younger.

    eECV = 0.0215weight(kg)0.6469height(cm)0.7236
    eLBM = 3.8eECV

    A. M. Peters, H. L. R. Snelling, D. M. Glass, N. J. Bird "Estimation of lean body mass in children". British Journal of Anaesthesia1 06(5): 719-23 (2011).


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