Table 2.

SNRs of the single-arm ECG recorded for 30 subjects under seven experiments.

Sub.	Resting	Palm Opening and Clenching	Forearm Moving	Arm Horizontally Moving in y-Axis	Arm Raising and Lowering in x-Axis	Arm Raising and Lowering in z-Axis	Valsalva Maneuver
1	5.6	4.1	5.8	4.053	4.053	4.023	6.120
2	11.0	14.4	8.8	3.783	2.918	2.780	31.740
3	45.2	35.0	15.5	3.805	4.282	3.976	24.733
4	23.6	38.6	7.8	3.633	2.416	2.198	34.865
5	25.7	17.7	12.0	5.812	5.338	5.726	8.203
6	23.8	19.5	6.4	2.499	3.466	2.677	26.281
7	79.3	26.8	8.7	10.351	2.014	7.185	12.603
8	17.3	28.6	16.5	5.063	4.892	5.602	12.390
9	46.8	4.4	5.9	4.358	3.984	4.520	19.101
10	21.4	17.9	6.4	6.647	7.198	4.574	28.793
11	20.7	166.1	21.2	3.875	8.343	4.303	15.002
12	24.5	8.3	10.622	2.591	2.747	2.022	8.545
13	59.0	39.5	36.921	8.536	11.209	6.967	34.430
14	34.2	7.4	6.976	2.049	2.256	2.162	17.363
15	17.6	10.0	3.893	5.497	6.829	4.822	6.820
16	20.7	15.8	5.778	5.754	9.902	7.586	13.984
17	19.9	27.6	7.913	7.454	19.066	52.994	16.338
18	16.1	6.3	10.957	4.433	1.869	2.095	6.386
19	58.9	23.5	30.860	13.050	6.246	4.917	46.567
20	10.1	42.8	11.698	5.628	5.058	5.960	12.646
21	16.0	20.9	13.408	6.294	6.306	6.426	20.706
22	13.3	9.8	8.118	7.815	4.186	6.109	7.315
23	12.8	30.2	6.869	7.852	8.319	7.893	16.724
24	10.9	12.1	3.178	2.521	2.761	3.113	9.533
25	9.5	25.7	4.705	7.336	6.933	5.008	20.319
26	49.6	17.0	15.197	3.253	2.172	2.622	48.128
27	24.3	12.9	7.831	9.014	6.238	7.089	18.459
28	14.7	7.7	14.124	5.397	3.550	4.790	18.746
29	56.0	67.0	31.940	6.612	4.984	5.513	34.386
30	20.0	18.3	5.285	4.498	3.312	2.409	13.245
Mean ± SD (dB)	26.1 ± 5.9	23.5 ± 7.4	18.3 ± 5.5 **	13.1 ± 3.8 **	12.6 ± 5.5 **	12.5 ± 5.1 **	23.0 ± 7.4

**: p < 0.001.