title: Comparison of gastric emptying of a solid and a liquid nutritional rehabilitation food.
abstract: OBJECTIVE
  To compare gastric emptying of a solid and a liquid nutritional rehabilitation food.
  
  
  METHODS
  Cross-over trial. Eight volunteers took, in random order at least 1 week apart, 2100 kJ of a solid and a liquid nutritional rehabilitation food with added labelled [13C] glycine.
  
  
  METHODS
  Research ward for healthy volunteers.
  
  
  METHODS
  Eight healthy volunteers.
  
  
  METHODS
  Appearance of 13CO2 was monitored in expired gas every 15 min for 240 min after meal intake and compared between solid and liquid meals. Parameters of gastric emptying were then calculated.
  
  
  RESULTS
  Gastric half-emptying time was slightly longer for solid meal compared to liquid meal (101+/-6.0 vs 88+/-9.8 min, P=0.24). 13CO2 excretion peaked 138+/-5.3 min after the solid meal compared with 119+/-8.6 min with liquid meal (P=0.06). 13CO2 excretion was higher for the liquid food up to 110 min after the meal but then became higher for the solid food. Analysis of variance for repeated measures of 13CO2 excretion showed a significant interaction term between the type of food and time indicating a delayed elimination of 13CO2 for the solid food (P=0.018).
  
  
  CONCLUSIONS
  Attempts to replace liquid nutritional rehabilitation foods by a solid food in malnourished patients should take into account a possible slower gastric emptying.
  
  
  BACKGROUND
  Supported by a grant from Nutriset (Malaunay, France) and ANVAR (Agence Nationale de la Valorisation de la Recherche, contract no. A9703021P).
authors.affiliation: Département des Sciences Biologiques, Faculté des Sciences, Monastir, Tunisia.
authors.forename: L
authors.initials: L
authors.lastname: Achour
authors.forename: S
authors.initials: S
authors.lastname: Méance
authors.forename: A
authors.initials: A
authors.lastname: Briend
mesh_terms: D000328:Adult; D019540:Area Under Curve; D001944:Breath Tests; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D018592:Cross-Over Studies; D005260:Female; D005502:Food; D005746:Gastric Emptying / Q000502:physiology*; D006801:Humans; D008297:Male; D009748:Nutrition Disorders / Q000178:diet therapy* / Q000503:physiopathology; D013997:Time Factors
chemical_list: D002247:Carbon Isotopes