Cited by 51Muscle metabolism and nutritionDiet, Metabolism, and DiseaseCardiovascular and exercise physiology

Comparison of exogenous glucose, fructose and galactose oxidation during exercise using 13C-labelling

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Burelle, Yan, Lamoureux, Marie-Catherine, Pèronnet, François, Massicotte, Denis, Lavoie, Carole·2006·British Journal of Nutrition

Abstract

Six subjects exercised for 120;min on a cycle ergometer (65 (se 3) % V˙O 2max) when ingesting a placebo or glucose, fructose or galactose (100g in 1000 ml water) labelled with 13 C. The oxidation of energy substrates including exogenous hexoses was compared using indirect respiratory calorimetry and 13 CO 2 production at the mouth. Total carbohydrate progressively decreased and total fat oxidation increased over the 120min exercise period in the four experimental situations. During the 120min of exercise, the amount of fructose oxidized (38·8 (se 2·6) g; 9·0 (se 0·6)% energy yield) was not significantly (approximately 4%) lower than that of exogenous glucose (40·5 (se 3·4) g; 9·2 (se 0·8)% energy yield), while that of galactose (23·7 (se 3·5) g; 5·5 (se 0·9) % energy yield) was only 59% and 61% that of glucose and fructose, respectively. When compared with the placebo, the ingestion and oxidation of the three hexoses did not significantly modify fat oxidation or total carbohydrate oxidation, but it significantly reduced (9–13%) endogenous carbohydrate oxidation. The present data indicate that fructose and exogenous glucose ingested during exercise could be oxidized at a similar rate, but that the oxidation rate of galactose was only approximately 60% that of the exogenous glucose and fructose, presumably because of a preferential incorporation of galactose into liver glycogen (Leloir pathway). The reduction in endogenous carbohydrate oxidation was, however, similar with the three hexoses.

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  • When only fructose is ingested, exogenous carbohydrate oxidation rates during exercise are equivalent or lower compared to glucose ingestion.

    “When (only) fructose is ingested, exogenous carbohydrate oxidation rates during exercise have been shown to be equivalent (Decombaz et al. 1985; Massicotte et al. 1990; Burelle et al. 2006) or lower compared to glucose ingestion (Massicotte et al. 1986, 1989, 1990; Guezennec et al. 1989; Jandrain et al. 1993; Adopo et al. 1994; Burelle et al. 1997).”

    From Fructose co‐ingestion to increase carbohydrate availability in athletes (2019) · cites this paper as Burelle et al. 2006

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Authors
Burelle, Y., Lamoureux, M.-C., Pèronnet, F., Massicotte, D., & Lavoie, C.
Affiliations
  • Université de Montréal (CA)
  • Université du Québec à Montréal (CA)
  • Université du Québec à Trois-Rivières (CA)
Corresponding author
Massicotte, Denis
Venue
British Journal of Nutrition
Published
2006-01
Volume
96
Issue
1
Pages
56-61
ISSN
  • 0007-1145 (ISSN-L)
  • 1475-2662
OpenAlex
W2119367691
Cited by
51
References
40
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 4 · 2019: 2 · 2018: 1 · 2016: 2 · 2015: 3 · 2014: 6 · 2013: 3 · 2012: 4
FWCI
1.10
Type
journal article
Language
en
Open access
Locations
  • British Journal Of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • McGill University
  • Université du Québec à Montréal
  • Natural Sciences and Engineering Research Council of Canada
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
exogenous carbohydrate oxidation, fructose oxidation, galactose oxidation, glucose oxidation, physical activity, 13C labeling, fat oxidation, liver glycogen, Leloir pathway, energy substrate utilization
MeSH terms
Administration, Oral, Adult, Blood Glucose, Breath Tests, Calorimetry, Indirect, Carbon Dioxide, Carbon Isotopes, Fructose, Galactose, Glucose, Humans, Insulin, Male, Oxidation-Reduction, Exercise

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