Abstract: Abstract: Objective To evaluate gut autonomic function tests in healthy subjects and its significance. Methods Heart rate variability (HRV) analysis and standard cardiac autonomic test were performed before and after test meal in HS (n=18), separately. Results (1) Though heart rate increased significantly, there was no difference between pre and postprandial autonomic function by standard autonomic test in HS. (2) Sympathetic to parasympathetic balance increased (p<0.05) and parasympathetic function decreased (p<0.01) after test meal by HRV analysis in HS. Conclusion Test meal combined with cardiac autonomic function test might help to reflect gastrointestinal autonomic nerve function. HRV analysis combined with test meal might be batter than standard cardiac autonomic test.

Key words: healthy subject, autonomic nerve function, HRV analysis, standard cardiac autonomic test