2018 Volume 39 Pages 103-113
The electrical activity of the gastrointestine is measured using an electrogastrogram (EGG)．The EGG is a noninvasive procedure to evaluate gastrointestinal motility and autonomic nervous system activity. However, EGG do not have been applied to clinical fields as electrocardiogram and electromyogram because EGGs are often contaminated by electro activity in the myocardia and muscles of diaphragm with respiration. Furthermore, analytical methods of the EGG do not have been established yet. Therefore, we examined the influence of the change on electric activity of the stomach after each exercise load of which the number is set to be two intensities in this paper. As a result, regardless of exercise intensity, the spectral density at the normal frequency band (2.4-3.7 cpm) of electrical activity in the stomach tended to decrease after the load. This may indicate a decrease in the gastric activity due to the exercise load. In addition, the translation error increased significantly only after strong exercise loading. Differences in exercise intensity are thought to affect not only the pacemaker of the stomach but also the electrical activity emitted from other organs.
