From: Two-megahertz impedance index prediction equation for appendicular lean mass in Korean older people
Validation for BIA-based ALM prediction equation |
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Development group (n = 131) |
Measured ALM = 17.28 ± 3.62 |
Predicted ALM = 0.254ZI@2 MHz + 1.0324sexM1F0 + 0.066Xc@5 kHz + 1.396 |
R = 0.964, Adusted R2 = 0.928, SEE = 0.97 kg, CV = 5.6%, SR: Excellent (M), Very good (F), |
VIF: ZI@2 MHz = 3.39, SEXM1F0 = 3.46, Xc@5 kHz = 1.11 |
Predicted ASM = 17.25 ± 3.48 |
Internal Cross-validation group (n = 64) |
Measured ALM = 17.77 ± 3.90 |
Predicted ALM = 17.68 ± 3.75, p = 0.486* |
R = 0.965, R2 = 0.931, TE = 1.00 kg, CV = 5.6%, SR: Excellent (M), Very Good (F), PIA: 84.4% |