Research Article
Implementation of Bioelectrical Impedance Measuring Instrument Based on Embedded System
Table 3
Difference error between the bioelectrical impedance of human left and right legs at multi frequencies using the developed and standard device.
| Frequency (kHz) | Impedance (Ω) Mean value | Left leg | Right leg | Standard device | BIA instrument | Diff./error (%) | Standard device | BIA instrument | Diff./error (%) |
| 5 | 322.1 | 311.1 | 3.42 | 317.5 | 302.3 | 4.79 | 50 | 305.3 | 291.2 | 4.62 | 299.7 | 283.6 | 5.37 | 100 | 299.1 | 286.8 | 4.11 | 273.4 | 280.2 | 2.49 | 150 | 298.1 | 282.1 | 5.37 | 292.4 | 275.4 | 5.81 | 200 | 288.9 | 276.4 | 4.33 | 280.3 | 269.6 | 3.82 | 250 | 280.2 | 272.1 | 2.89 | 274.2 | 264.2 | 3.65 | 300 | 276.6 | 270.6 | 2.17 | 269.4 | 262.4 | 2.60 | 400 | 271.8 | 267.3 | 1.66 | 262.9 | 260.7 | 0.84 |
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