Interrater and Intrarater Reliability of Electrical Impedance Myography: A Comparison between Large and Small Handheld Electrode Arrays

Table 2

Within-day longitudinal biceps EIM measurements.

		Large sensor			Small sensor
		1st measurement	2nd measurement	d	1st measurement	2nd measurement	d
50 kHz	Phase	21.54 (3.34)	21.38 (3.25)	0.15	12.11 (4.07)	11.75 (3.58)	0.36
	Reactance	9.85 (1.16)	10.13 (1.27)	−0.32	12.73 (3.51)	12.61 (2.72)	0.12
	Resistance	25.32 (5.37)	26.70 (7.16)	−1.38	61.67 (7.16)	63.18 (16.39)	−1.38
100 kHz	Phase	22.73 (3.80)	22.56 (3.51)	0.18	14.98 (3.56)	14.64 (3.27)	0.34
	Reactance	8.36 (1.01)	8.63 (1.31)	−0.27	14.14 (3.11)	14.19 (3.08)	−0.05
	Resistance	20.49 (5.04)	21.56 (3.52)	−1.06	54.59 (14.19)	56.27 (15.53)	−1.68

Note: mean (standard deviation); d: mean difference between first and second measurements.