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Int J Sports Med 1992; 13(8): 581-584
DOI: 10.1055/s-2007-1024569
© Georg Thieme Verlag Stuttgart · New York

Gastric Emptying of Carbohydrate - Medium Chain Triglyceride Suspensions at Rest

E. J. Beckers, A. E. Jeukendrup, F. Brouns, A. J. M. Wagenmakers, W. H. M. Saris
  • Dept. Human Biology, Nutrition Research Centre, Rijksuniversiteit, Limburg, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
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Publikationsdatum:
14. März 2008 (online)

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Abstract

Nine male volunteers participated in 4 gastric emptying (GE) tests of liquid equicaloric mixtures of CHO (maltodextrins) and MCT of the following composition (% CHO-% MCT): Drink (Dr) 1: 70%-30%, Dr2: 80%-20%, Dr3: 90%-10%, Dr4: 100%-0%. GE was measured at rest for 90 min according to the modified double sampling technique. GE rate, expressed as t1/2 (SEM), was 23 (2.3), 24 (1.6), 27 (2.2) and 36 (2.9) min, respectively, from drink 1 to drink 4. Statistical analysis showed that all MCT containing drinks emptied faster than the 100% CHO drink. Two mechanisms may explain this observation: 1) the CHO content and osmolality increases from Dr 1 to Dr 4 (both are regulators of GE); 2) MCT may not inhibit GE as common fat does, due to a better water solubility and absorption in the small intestine, resulting in a decreased duodenalgastric feedback.

Key words

Gastric emptying - exogenous substrates - MCT - free fatty acids - maltodextrins