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 Release 21.0, Jan 2008
 
Chapter : ch2. Body Dimensions & Blood Volumes Section : Lean Body and Fat Free Mass
  Estimating Lean Body Mass from Height and Weight Using the Method of James

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Overview :

James developed equations for predicting the lean body mass of a person based on that person's body weight and height.

 

Populations: This apparently applies for neonates, children and adults.

 

For males:

 

lean body mass in kilograms =

= (1.10 * (body weight in kilograms)) – (128 * ((body weight in kilograms)^2) / ((body height in cm)^2))

 

For females:

 

lean body mass in kilograms =

= (1.07 * (body weight in kilograms)) – (148 * ((body weight in kilograms)^2) / ((body height in cm)^2))

 

Limitations:

• I am not sure how accurate this is for a person at the extremes of weight (cachectic vs obese).

 

  References:

Hallynck TH, Soep HH, et al. Should clearance be normalised to body surface or to lean body mass? Br J Clin Pharmacol. 1981; 11: 523-526.

James WPT. Research on obesity. London. Her Majesty's Stationery Office. (ISBN 0-11-4500347). 1976.

 

 

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