Document Detail

Effects of meal volume and composition on gastric myoelectrical activity.
MedLine Citation:
PMID:  9486200     Owner:  NLM     Status:  MEDLINE    
The absence of a standard meal in electrogastrography may limit its clinical significance. Different meals may fail to produce the expected postprandial motility pattern. The aim of this study was to investigate the effect of meal volume and composition on postprandial myoelectrical activity. Fourteen healthy subjects were given four meals that differed from a "reference meal" in one single parameter (volume, calorie, or fiber content). Gastric myoelectrical activity was measured using surface electrogastrography. Spectral and statistical analyses were performed to investigate the effect of food properties on electrogastrogram (EGG) parameters. It was found that the reference meal produced a postprandial increase in the dominant frequency (P < 0.007), dominant power (P < 0.04), and percentage of normal 2-4 cycle/min gastric slow waves (P > 0.05). Similar changes were observed with the low-volume and high-fiber meals but not with the reduced-calorie meal. Fasting EGG parameters in all four sessions showed no significant difference. It was concluded that low-calorie meals do not result in expected postprandial physiological responses and thus are not appropriate for EGG tests. A volume reduction of down to one-half the volume of a regular meal does not affect postprandial changes of the EGG; thus a condensed test meal may be recommended for symptomatic patients.
D Levanon; M Zhang; W C Orr; J D Chen
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of physiology     Volume:  274     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-03-23     Completed Date:  1998-03-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  G430-4     Citation Subset:  IM    
Thomas N. Lynn Institute for Healthcare Research, Oklahoma City, Oklahoma 73112, USA.
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MeSH Terms
Dietary Fiber
Energy Intake
Gastric Mucosa / physiology*
Myoelectric Complex, Migrating / physiology*
Postprandial Period / physiology*

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