The Effects of Carbonated Water upon Gastric and Cardiac Activities and Fullness in Healthy Young Women

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概要

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• Although previous reports suggested that carbonated water drinking was effective against gastrointestinal symptoms, there is little information about the effects of carbonated water on gastric and appetite sensation. We therefore investigated the effect of carbonated water on short-term fullness with respect to gastric and cardiac responses in 19 healthy young women. Each subject was tested on three separate days at approximately 9 a.m. after an overnight fast. Gastric motility, evaluated by electrogastrography (EGG) and heart rate (HR), was measured for 20 min in the fasting state and 40 min after ingestion of water. Preloads consisted of an equivalent amount (250 mL) of water (W) or carbonated water (CW) and no drinking (blank). Fullness scores were measured using visual analog scales. To determine gastric motility, we assessed the component of bradygastria (1-2 cycles/min [cpm]), normogastria (2-4 cpm), tachygastria (4-9 cpm), and dominant frequency of the EGG power spectrum. After ingestion of CW, significant increases in fullness scores were observed compared with W. All postprandial EGG powers were significantly greater than preprandial, but no group difference was found. However, a dominant frequency tended to shift toward a lower band after ingestion of W. A significantly higher HR was found following consumption of CW as opposed to W. Multiple regression analysis revealed that increased HR was a significant variable contributing to the variances in fullness after ingestion of CW at 40 min. Our data suggest that CW may induce a short-term, but significant, satiating effect through enhanced postprandial gastric and cardiac activities due possibly to the increased sympathetic activity and/or withdrawal of parasympathetic activity.

• 財団法人 学会誌刊行センターの論文

著者

• Matsumoto Takehiro

  Institute For Clinical Research Nagasaki Chuo National Hospital

• MORITANI Toshio

  Graduate School of Human & Environmental Studies, Kyoto University

• MATSUMOTO Takehiro

  Institute for Water Science, Suntory Business Expert Limited

• WAKISAKA Shiori

  Graduate School of Human and Environmental Studies, Kyoto University

• NAGAI Hajime

  Frontier Center for Value Creation, Suntory Business Expert Limited

• MURA Emi

  Frontier Center for Value Creation, Suntory Business Expert Limited

• NAGAI Narumi

  Graduate School of Human Science and Environment, University of Hyogo

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