Effects of water ingestion on gastric electrical activity and heart-rate variability in healthy human subjects

Michio Watanabe, Yutaka Shimada, Shinya Sakai, Naotoshi Shibahara, Harumi Matsuda, Katsumi Umeno, Hidetsugu Asanoi, Katsutoshi Terasawa*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

21 被引用数 (Scopus)

抄録

Electrogastrography (EGG) is a method to record electrical activity of the stomach using cutaneous electrodes. Power ratio (PR) is one of the parameters and means the relative change of EGG power of gastric activity from before to after certain stimulations (e.g., meals, water or drugs). Autonomic nervous function is an important modulator of gastric activity, but its relation with the EGG parameters has not been well clarified. We recorded EGG and the R-R interval simultaneously both before and after drinking 150 ml water for 400 s, and spectrally analyzed them using the maximum entropy method in 12 healthy volunteers. We calculated PR from before to after water ingestion, and the power of the high-frequency component of R-R interval variability before (pre-HF) and after water ingestion (post-HF), and their ratio (rHF = post-HF/pre-HF). PR was positively correlated with rHF (r = 0.727; P < 0.05) and negatively correlated with pre-HF (r = - 0.706; P < 0.05), and rHF was negatively correlated with pre-HF (r = - 0.776; P < 0.05). These results suggest that simultaneous recording of EGG and ECG for frequency domain analysis is necessary to estimate the vagal nervous activity.

本文言語英語
ページ(範囲)44-50
ページ数7
ジャーナルJournal of the Autonomic Nervous System
58
1-2
DOI
出版ステータス出版済み - 1996/04/20

ASJC Scopus 主題領域

  • 神経科学一般
  • 生理学
  • 臨床神経学

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