Table 3. The comparison of the gastric myoelectric activity between the healthy volunteers, the VP-DG and DG groups.

		Ch1				Ch2
		Healthy volunteers (n=12)	VP-DG (n=26)	DG (n=20)		Healthy volunteers (n=12)	VP-DG (n=26)	DG (n=20)
%N	Fasting	60.5 ± 24.3***	49.6 ± 18.7**	35.8 ± 15.5		52.8 ± 27.0	48.9 ± 22.0	37.4 ± 14.7
	Fed	74.2 ± 18.6*, ***	54.5 ± 19.2**	41.0 ± 17.7		79.1 ± 16.5*, ***	51.8 ± 23.8	41.9 ± 16.2
%B	Fasting	2.91 ± 3.96***, †	6.49 ± 6.93	11.4 ± 8.50†		4.23 ± 6.10***	4.40 ± 4.85**	10.2 ± 8.04
	Fed	3.27 ± 5.91***	4.94 ± 5.85**	9.52 ± 7.40		1.65 ± 3.17***	4.05 ± 4.37**	9.58 ± 7.40
%T	Fasting	0.83 ± 1.94†	6.95 ± 14.1	3.96 ± 6.23†		1.69 ± 4.46	4.06 ± 3.23	4.20 ± 5.54
	Fed	6.21 ± 7.65	5.29 ± 5.73	9.44 ± 8.67		7.50 ± 15.0	5.31 ± 6.73	6.04 ± 8.55
%A	Fasting	35.0 ± 23.2	39.1 ± 17.3	48.8 ± 13.5		33.7 ± 18.9	45.5 ± 21.3	48.2 ± 14.8
	Fed	16.3 ± 11.8	35.3 ± 15.9	40.4 ± 15.1		15.5 ± 13.3	38.9 ± 18.9	42.4 ± 14.5

± values are mean ± S.D. values. VP-DG: Vagus-nerve preserving distal gastrectomy, DG: Standard distal gastrectomy. %N: %normal, %B: %bradygastria, %T: %tachygastria, %A: %arrhythmia. *P<0.05 Healthy volunteers vs. VP-DG, **P<0.05 VP-DG vs. DG, ***P<0.05 Healthy volunteers vs. DG, †P<0.05 fast vs. fed.