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Schierbauer, Janis ; Altenberg, Oscar ; Voit, Thomas ; Zimmermann, Paul ; Moser, Othmar:
Effect of Low‐To‐Moderate Exogenous Carbohydrate Supplementation on Time to Exhaustion During Constant Load Intense Cycling in Healthy Individuals : A Double‐Blind, Randomised and Placebo‐Controlled Crossover Trial.
In: European Journal of Sport Science.
Bd. 25
(2025)
Heft 7
.
- e12326.
ISSN 1536-7290
DOI: https://doi.org/10.1002/ejsc.12326
Abstract
Exogenous carbohydrate (CHO) supplementation during exercise is an efficient strategy to enhance endurance performance. However, the effects of low-to-moderate amounts of exogenous CHO on time to exhaustion (TTE) have not been fully investigated. Nineteen healthy moderately active participants (26.2 ± 1.7 years and BMI: 22.4 ± 2.3 kg·m−2) performed four TTE tests at the second lactate turn point (LTP2) in a double-blind, randomised and placebo-controlled setting consuming either 20, 40 and 60 g·L−1·h−1 of a glucose and fructose combination (CHO20, CHO40 and CHO60) or a placebo (PLA). Glucose [Glu−] and lactate concentrations [La−] as well as ventilatory, heart rate (HR) and rating of perceived exertion (RPE) values were recorded during the tests. There were no statistically significant differences in TTE (PLA: 32.5 ± 9.6 min, CHO20: 35.9 ± 14.5 min, CHO40: 35.1 ± 12.9 min, CHO60: 38.0 ± 17.5 min and p = 0.11). Within each trial arm, no statistically significant differences were found between pre- and post-exercise [Glu−] (p > 0.05). Post-exercise [Glu−] for CHO60 were significantly higher when compared to PLA (p = 0.03). Lastly, mean ventilatory parameters as well as HR and RPE during exercise showed no statistically significant differences between trial arms (p > 0.05). Low-to-moderate amounts of exogenous CHO do not increase TTE in healthy moderately active individuals when compared to a placebo. Therefore, when exercising for less than 60 min at high intensities, exogenous CHO supplementation is not necessary if a CHO rich diet is followed prior to exercise.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Kulturwissenschaftliche Fakultät > Institut für Sportwissenschaft > Lehrstuhl Exercise Physiology > Lehrstuhl Exercise Physiology - Univ.-Prof. Dr. Othmar Moser |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit |
| Eingestellt am: | 01 Okt 2025 05:26 |
| Letzte Änderung: | 01 Okt 2025 05:26 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/94809 |