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Table 3 Class of FFM models developed from the NHANES data

From: New fat free mass - fat mass model for use in physiological energy balance equations

Group FFM-fat Model
AA Female FFM = -69 + 2.5F - 0.04A + 0.3H - 0.002FA - 0.01FH - 0.047F2 + 0.00003F2A +0.0000004F4 + 0.0002F3 + 0.0003F2H - 0.000002F3H
AA Male FFM = -69 + 3.6F - 0.04A + 0.7H - 0.002FA - 0.01FH + 0.00003F2A - 0.07F2 + 0.0007F3 - 0.000002F4 + 0.0003F2H - 0.000002FH
NAA Female FFM = -72.1 + 2.5F - 0.04A + 0.7H - 0.002A - 0.01FH - 0.04F2 + 0.00003F2A + 0.0000004F4 + 0.0002F3 + 0.0003F2H - 0.000002F3H
NAA Male FFM = -71.7 + 3.6F - 0.04A + 0.7H - 0.002FA - 0.01FH + 0.00003F2A-0.07F2 + 0.0006F3 - 0.000002F4 + 0.0003F2H - 0.000002F3H
  1. FFM - fat models generated through a linear regression analysis of NHANES cross-sectional data that tested for the effects of age, height, race and gender, and powers of FM. Age in years is represented by the variable, A, height in cm is represented by H, FM in kg is represented by F, and FFM denotes fat free mass in kg. Separate indicator variables for all the non-African American (NAA) races were not statistically significant yielding two race indicator variables, NAA and African American (AA). The differentiated race models are listed as separate rows in the table.