Addition of sodium alginate and pectin to a carbohydrate-electrolyte solution does not influence substrate oxidation, gastrointestinal comfort, or cycling performance

Appl Physiol Nutr Metab. 2020 Jun;45(6):675-678. doi: 10.1139/apnm-2019-0802. Epub 2020 Jan 22.

Abstract

Eight well-trained cyclists ingested 68 g·h-1 of a carbohydrate-electrolyte solution with sodium alginate and pectin (CHO-ALG) or a taste and carbohydrate type-matched carbohydrate-electrolyte solution (CHO) during 120 min of cycling at 55% maximal power followed by an ∼20 min time trial. Oxygen uptake, carbon dioxide production, blood glucose concentration, substrate oxidation, gastrointestinal symptoms, and time trial performance (CHO-ALG: 1219 ± 84 s, CHO: 1267 ± 102 s; P = 0.185) were not different between trials. Novelty Inclusion of sodium alginate and pectin in a carbohydrate drink does not influence blood glucose, substrate oxidation, gastrointestinal comfort, or performance in cyclists.

Keywords: boisson pour sportifs; cycling; exercise performance; gastro-intestinal; gastrointestinal; hydrogel; oxidation; oxydation; performance physique; pédalage; sports drink.

MeSH terms

  • Adult
  • Alginates / administration & dosage
  • Alginates / pharmacology*
  • Athletic Performance / physiology*
  • Beverages*
  • Bicycling / physiology*
  • Blood Glucose / drug effects
  • Dietary Carbohydrates / administration & dosage
  • Dietary Carbohydrates / pharmacology
  • Electrolytes / administration & dosage
  • Electrolytes / pharmacology
  • Gastrointestinal Tract / drug effects
  • Humans
  • Oxidation-Reduction / drug effects
  • Pectins / administration & dosage
  • Pectins / pharmacology*

Substances

  • Alginates
  • Blood Glucose
  • Dietary Carbohydrates
  • Electrolytes
  • Pectins