Next Article in Journal
S‐Allylmercaptocysteine Attenuates Cisplatin‐Induced Nephrotoxicity through Suppression of Apoptosis, Oxidative Stress, and Inflammation
Next Article in Special Issue
Metabolic Effects of Glucose-Fructose Co-Ingestion Compared to Glucose Alone during Exercise in Type 1 Diabetes
Previous Article in Journal
Role of Fiber in Symptomatic Uncomplicated Diverticular Disease: A Systematic Review
Previous Article in Special Issue
Individual Diet Modeling Shows How to Balance the Diet of French Adults with or without Excessive Free Sugar Intakes
Open AccessArticle

Fructose and Sucrose Intake Increase Exogenous Carbohydrate Oxidation during Exercise

1
NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, P.O. Box 616, 6200 MD Maastricht, The Netherlands
2
School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK
*
Author to whom correspondence should be addressed.
Nutrients 2017, 9(2), 167; https://doi.org/10.3390/nu9020167
Received: 6 January 2017 / Accepted: 16 February 2017 / Published: 20 February 2017
Peak exogenous carbohydrate oxidation rates typically reach ~1 g∙min−1 during exercise when ample glucose or glucose polymers are ingested. Fructose co‐ingestion has been shown to further increase exogenous carbohydrate oxidation rates. The purpose of this study was to assess the impact of fructose co‐ingestion provided either as a monosaccharide or as part of the disaccharide sucrose on exogenous carbohydrate oxidation rates during prolonged exercise in trained cyclists. Ten trained male cyclists (VO2peak: 65 ± 2 mL∙kg−1∙min−1) cycled on four different occasions for 180 min at 50% Wmax during which they consumed a carbohydrate solution providing 1.8 g∙min−1 of glucose (GLU), 1.2 g∙min−1 glucose + 0.6 g∙min−1 fructose (GLU + FRU), 0.6 g∙min−1 glucose + 1.2 g∙min−1 sucrose (GLU + SUC), or water (WAT). Peak exogenous carbohydrate oxidation rates did not differ between GLU + FRU and GLU + SUC (1.40 ± 0.06 vs. 1.29 ± 0.07 g∙min−1, respectively, p = 0.999), but were 46% ± 8% higher when compared to GLU (0.96 ± 0.06 g∙min−1: p < 0.05). In line, exogenous carbohydrate oxidation rates during the latter 120 min of exercise were 46% ± 8% higher in GLU + FRU or GLU + SUC compared with GLU (1.19 ± 0.12, 1.13 ± 0.21, and 0.82 ± 0.16 g∙min−1, respectively, p < 0.05). We conclude that fructose co‐ingestion (0.6 g∙min−1) with glucose (1.2 g∙min−1) provided either as a monosaccharide or as sucrose strongly increases exogenous carbohydrate oxidation rates during prolonged exercise in trained cyclists. View Full-Text
Keywords: substrate utilization; stable isotopes; metabolism; sugar substrate utilization; stable isotopes; metabolism; sugar
Show Figures

Figure 1

MDPI and ACS Style

Trommelen, J.; Fuchs, C.J.; Beelen, M.; Lenaerts, K.; Jeukendrup, A.E.; Cermak, N.M.; Van Loon, L.J.C. Fructose and Sucrose Intake Increase Exogenous Carbohydrate Oxidation during Exercise. Nutrients 2017, 9, 167.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop