BACKGROUND/AIMS: The aim of this study was to evaluate the influence of water ingestion on elec trogastrographic findings and epigastric fullness in patients with dysmotility-like functional dyspepsia (DLFD). METHODS: The study was performed on 15 patients with DLFD and 17 normal controls Abdominal surface electrogastrography was applied for 30 min in fasting state and for 30 min afte water ingestion to bring epigastric fullness. RESULTS: Patients with DLFD showed higher scale of epigastric fullness in fasting, postprandial 20 min and postprandial 30 min, compared with norma controls. There was no difference between the patients and controls in the amount of ingested wate which brought epigastric fullness. Significant differences were found in the percentage of fed 3 cpm wave and the percentage of fed bradygastria. No significant differences were found in the percentage of fed tachygastria, fasting electrogastrographic findings and power ratio. No correlation was found between the percentage of 3 cpm slow wave and the scale of epigastric fullness. CONCLUSIONS: Pati ents with DLFD showed higher percentage of 3 cpm wave after ingestion of water. The amount o ingested water to bring epigastric fullness was similar in the patients and normal controls.