PMID: 3747805Aug 1, 1986Paper

Intestinal water and electrolyte flux of glucose-polymer electrolyte solutions

Medicine and Science in Sports and Exercise
K B Wheeler, J G Banwell

Abstract

Carbohydrate-containing beverages, designed for consumption during physical activity, have been shown to improve endurance and performance during prolonged exercise. However, any solution consumed during exercise should allow rapid water absorption to ensure proper hydration. In this study, nine healthy volunteers were used to assess intestinal water and electrolyte flux characteristics of two carbohydrate-electrolyte solutions compared with water. One solution (GPF) contained 5.0% glucose polymers and 2.0% fructose, while the other (GPFS) contained 3.6% glucose polymers, 1.8% fructose, and 1.6% sucrose. Both solutions contained similar amounts of sodium, chloride, potassium, magnesium, and calcium (10, 10, 5, 1.2, and 3.2 mEq X l-1, respectively). Solutions were administered via a triple-lumen perfusion tube placed just distal to the ligament of Treitz in the small intestine. Polyethylene glycol (5 g X l-1) was employed as a non-absorbable marker to measure water and mineral fluxes. Results indicated that: jejunal intestinal net water absorption was similar for the GPF carbohydrate-mineral solution when compared with perfusion of plain water and replacement of a portion of the glucose-polymer with sucrose significantly slowed ...Continue Reading

Citations

Jun 1, 1989·British Journal of Sports Medicine·U M KujalaE Havas
Jan 1, 1989·European Journal of Applied Physiology and Occupational Physiology·P D NeuferM N Sawka
Jan 1, 1993·European Journal of Applied Physiology and Occupational Physiology·I NishibataM Miyashita
May 1, 1989·The Physician and Sportsmedicine·K B Wheeler, A L Hecker
Oct 1, 1989·The Physician and Sportsmedicine·B D MinkG Marcotte
Nov 1, 1989·The American Journal of Sports Medicine·P B NelsonJ O'Malley
Jun 1, 1993·Journal of the American College of Nutrition·P A Deuster, A Singh

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