Implementation of Bioelectrical Impedance Measuring Instrument Based on Embedded System

Table 6

Difference error between the bioelectrical impedance of human left and right arm at multiple frequencies using the developed and standard devices.

Frequency (kHz)	Impedance (Ω); Mean value
	Left arm			Right arm
	Standard device	BIA instrument	Diff./error (%)	Standard device	BIA instrument	Diff./error (%)
5	433.2	399.3	7.83	437.2	390.4	10.70
50	378.6	357.6	5.55	358.3	351.7	1.84
100	356.3	339.6	4.69	339.2	334.3	1.44
150	348.8	330.8	5.16	330.2	326.2	1.21
200	336.4	321.4	4.46	323.4	317.5	1.82
250	326.5	318.7	2.39	320.7	314.3	2.00
300	319.2	315.2	1.25	311.4	311.6	0.06
400	316.1	312.1	1.27	304.4	307.4	0.99