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 Release 21.0, Jan 2008
 
Chapter : ch2. Body Dimensions & Blood Volumes Section : Lean Body and Fat Free Mass
  Equations of Boer and Raes et al for Lean Body Mass for a Pediatric or Adult Patient Based on Height and Weight

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Copyright (c) 2006-2007, Institute for Algorithmic Medicine, Houston, TX, USA. All rights reserved.

Overview :

The lean body weight (LBM) of a pediatric patient or adult can be estimated from the patient's height and weight.

 

Parameters:

(1) gender

(2) age in years

(3) Tanner stage in female pediatric patients

(4) height in meters

(5) body weight in kilograms

 

Equations of Boer for lean body mass in adults:

 

lean body mass for adult males in kilograms =

= (0.407 * (body weight in kilograms)) + (26.7 * (height in meters)) - 19.2

 

lean body mass for adult females in kilograms =

= (0.252 * (body weight in kilograms)) + (47.3 * (height in meters)) - 48.3

 

Equations of Raes et al for lean body mass in pediatric patients:

 

lean body mass for pediatric males = equation of Boer (above)

 

lean body mass for a pediatric female at Tanner Stage 1 = equation of Boer for males (above)

 

lean body mass for a pediatric female at Tanner Stage 5 = equation of Boer for females (above)

 

lean body mass for a pediatric female at Tanner Stages 2 to 4 =

= average of the LBM for a female in Tanner Stage 1 and a female in Tanner Stage 5 =

= (0.3295 * (body weight in kilograms)) + (37 * (height in meters)) - 33.75

 

  References:

Boer P. Estimated lean body mass as an index for normalization of body fluid volumes in humans. Am J Physiol. 1984; 247: F632-F636.

Raes A, Van Aken S, et al. A reference frame for blood volume in children and adults. BMC Pediatrics. 2006; 6(3).

 

 

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