Table 5.

Predicted fat-free mass index (± s.e.) (kgλm⁻²) for female individuals between the ages of 20–90 years

	Caucasian (n = 404)	African American (n = 209)	Hispanic (n = 188)	Asian (n = 58)
20 years	16.22 ± 0.16	17.07 ± 0.19	16.50 ± 0.19	14.72 ± 0.23
25 years	16.47 ± 0.12	17.32 ± 0.15	16.74 ± 0.16	14.97 ± 0.20
30 years	16.67 ± 0.10	17.52 ± 0.14	16.94 ± 0.14	15.17 ± 0.19
35 years	16.82 ± 0.10	17.67 ± 0.13	17.09 ± 0.13	15.32 ± 0.19
40 years	16.92 ± 0.10	17.77 ± 0.13	17.20 ± 0.13	15.42 ± 0.19
45 years	16.98 ± 0.11	17.83 ± 0.14	17.25 ± 0.13	15.47 ± 0.20
50 years	16.98 ± 0.12	17.83 ± 0.14	17.25 ± 0.13	15.48 ± 0.20
55 years	16.94 ± 0.12	17.79 ± 0.14	17.21 ± 17.21	15.43 ± 0.20
60 years	16.85 ± 0.12	17.70 ± 0.13	17.12 ± 0.13	15.34 ± 0.20
65 years	16.71 ± 0.12	17.56 ± 0.13	16.98 ± 0.13	15.20 ± 0.20
70 years	16.52 ± 0.12	17.37 ± 0.13	16.79 ± 0.13	15.01 ± 0.20
75 years	16.28 ± 0.13	17.13 ± 0.14	16.56 ± 0.15	14.78 ± 0.20
80 years	16.00 ± 0.16	16.85 ± 0.17	16.27 ± 0.18	14.49 ± 0.22
85 years	15.66 ± 0.21	16.51 ± 0.21	15.94 ± 0.22	14.16 ± 0.25
90 years	15.28 ± 0.26	16.13 ± 0.27	15.56 ± 0.28	13.78 ± 0.30
Percent decline since turning point (%)	−10.0	−9.5	−9.9	−11.0

The prediction equations for the four ethnic groups were significantly different from each other (P < 0.001; Hispanic versus Caucasian P < 0.04). FFMI Caucasian (kgλm⁻²) = 14.752+(0.0929701 × age)−(0.0009674 × age2). FFMI African American (kgλm⁻²) = 15.602+(0.0929701 × age)−(0.0009674 × age2). FFMI Hispanic (kgλm⁻²) = 15.025+(0.0929701 × age)−(0.0009674 × age2). FFMI Asian (kgλm⁻²) = 13.247+(0.0929701 × age)−(0.0009674 × age2). Percent decline = (FFMI at 90 years−FFMI at 48 years)/(FFMI at 48 years) × 100.