Endurance Training with or without Glucose-Fructose Ingestion: Effects on Lactate Metabolism Assessed in a Randomized Clinical Trial on Sedentary Men.

ABSTRACT: Glucose-fructose ingestion increases glucose and lactate oxidation during exercise. We hypothesized that training with glucose-fructose would induce key adaptations in lactate metabolism. Two groups of eight sedentary males were endurance-trained for three weeks while ingesting either glucose-fructose (GF) or water (C). Effects of glucose-fructose on lactate appearance, oxidation, and clearance were measured at rest and during exercise, pre-training, and post-training. Pre-training, resting lactate appearance was 3.6 ± 0.5 vs. 3.6 ± 0.4 mg·kg^-1·min^-1 in GF and C, and was increased to 11.2 ± 1.4 vs. 8.8 ± 0.7 mg·kg^-1·min^-1 by exercise (Exercise: p < 0.01). Lactate oxidation represented 20.6% ± 1.0% and 17.5% ± 1.7% of lactate appearance at

SUBMITTER: Rosset R 

PROVIDER: S-EPMC5409750 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature