The Establishment of Bioelectrical Impedance Analysis ... - IERI

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Statistical analysis The data all were analyzed by SPSS.12.0 software (SPSS Inc., Chicago, IL, USA). Data are shown as mean (±SD) (standard deviation). Values of P
Whole body and segments of the FFM measurements The measured FFM of whole body, upper limb, lower limb and trunk by DXA, ANN and BIA8 were shown in Table 2. The measured FFM of trunk were defined to contain head part. The estimation of FFM of whole body, right upper limb, left upper limb, right lower limb, left lower limb and trunk by ANN were termed as FFM whole-ANN , FFM rleg-ANN , FFM lleg-ANN , FFM rarm-ANN , FFMl arm-ANN and FFM trunk-ANN , respectively, similarly, that of by BIA8 as FFM whole- BIA8 , FFM rleg- BIA8 , FFMl leg-BIA8 , FFM rarm-BIA8 , FFM larm-BIA8 and FFM trunk-BIA8 , respectively. The FFM trunk-ANN was yielded by following equation: FFM trunk-ANN = FFM whole-ANN - FFM rleg-ANN - FFM lleg-ANN - FFM rarm-ANN - FFM larm-ANN (1) Table 2. DXA, BIA8 and ANN estimate body FFM results with the limbs segment Item Mean(SD) Range FFM @ whole-DXA (kg) 61.19(6.30) 48.99-76.16 FFM * arm-DXA(kg) 3.57(0.59) 5.11-2.30 FFM * leg-DXA(kg) 11.56(1.46) 9.22-14.43 FFM @ trunk-DXA(kg) 26.50(2.85) 18.48-32.31 FFM @ whole-BIA8 (kg) 61.55(6.13) 48.37-72.47 FFM * arm-BIA8(kg) 3.53(0.45) 2.40-4.47 FFM * leg-BIA8(kg) 12.32(1.49) 8.53-15.37 FFM @ trunk-BIA8(kg) 29.86(2.62) 25.13-34.67 FFM @ whole-ANN (kg) 61.82(6.29) 49.04-76.13 FFM * arm-ANN(kg) 3.57(0.53) 4.94-2.72 FFM * leg-ANN(kg) 11.56(1.41) 9.18-14.37 FFM @ trunk-ANN(kg) 31.59(2.85) 24.80-37.95 @ n =24, * n = 48, subscript whole, whole, leg, trunk representing the whole body, upper and lower limbs and trunk (including head), DXA, BIA8, ANN represent the application DXA, BIA8 and ANN measurement and estimation results. In Fig. 3, it presented the distribution and correlation between the measured FFM by DXA and estimated FFM by ANN or by BIA8. The determination coefficient (R 2 ) between FFM whole-DXA vs. FFM whole-BIA8 is R 2 = 0.794 (P< 0.001) with the linear regression equation as FFM whole-BIA8 = 0.867 FFM whole-DXA + 7.910, and that of vs. FFM whole-ANN is R 2 = 0.996 (P< 0.001) with as FFM whole-ANN = 0.998 FFM whole-DXA + 0.072. To clearly indicate the distribution of differences between FFM whole-DXA vs. FFM whole-BIA8 and FFM whole-DXA vs. FFM whole-ANN , we used Bland-Altman Analysis to obtain average difference between FFM whole-DXA vs. FFM whole-BIA8 at -0.039 kg within 2SD from -0.985 to 0.908 kg as well as FFM whole-DXA vs. FFM whole-ANN at -0.001 kg, from -0.451 to 0.449kg (Fig. 4.(a)). In Fig. 3.(b), it presented the distribution and correlation between the measured upper limb FFM by DXA and estimated FFM by ANN or by BIA8. The determination coefficient (R 2 ) between FFM arm-DXA vs. FFM arm-BIA8 is R 2 = 0.374 (P
Page 1 and 2: 2012 International Conference on Af
Page 3: After being measured the weight at
Page 7 and 8: FFM whole-BIA8 , FFM whole-ANN (kg)
Page 9: Summary In this study, we applied t

The Establishment of Bioelectrical Impedance Analysis ... - IERI

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