TABLE 1. Results for Evaluation of Signals’ Interchangeability.

Index	Stage	Biceps	Triceps	Tibialis	Quadriceps	Overall
Amplitude Ag/AgCl (V)	Relaxation	0.16 ± 0.17	0.42 ± 0.27	0.064 ± 0.101	0.072 ± 0.068	0.18 ± 0.22
	Contraction	0.99 ± 0.42	1.47 ± 0.53	0.98 ± 0.7	0.72 ± 0.36	1.04 ± 0.58
Amplitude CSA (V)	Relaxation	0.17 ± 0.26	0.48 ± 0.46	0.06 ± 0.11	0.051 ± 0.041	0.19 ± 0.31
	Contraction	0.99 ± 0.38	1.48 ± 0.66	1.01 ± 0.68	0.71 ± 0.31	1.05 ± 0.59
Contraction time correlation	on	0.95	0.96	0.96	0.97	0.96
	off	0.96	0.98	0.91	0.90	0.94
Envelope correlation		0.91 ± 0.07	0.92 ± 0.038	0.95 ± 0.029	0.93 ± 0.05	0.93 ± 0.052
RMS correlation		0.91 ± 0.06	0.91 ± 0.038	0.95 ± 0.029	0.93 ± 0.05	0.93 ± 0.05
PSD correlation		0.98 ± 0.02	0.95 ± 0.034	0.95 ± 0.046	0.97 ± 0.04	0.96 ± 0.04

Values are expressed as mean ± standard deviation.