Acute effects of commercial energy drink consumption on exercise performance and cardiovascular safety: a randomized, double-blind, placebo-controlled, crossover trial

The aim of this study was to examine the acute effects of a non-caloric energy drink (C4E) compared to a traditional sugar-containing energy drink (MED) and non-caloric placebo (PLA) on exercise performance and cardiovascular safety. Thirty healthy, physically active males (25 ± 4 y) completed three...

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Bibliographic Details
Published in:Journal of the International Society of Sports Nutrition 2024-12, Vol.21 (1), p.2297988-2297988
Main Authors: Banks, Nile F, Rogers, Emily M, Helwig, Nate J, Schwager, Laura E, Alpers, Justin P, Schulte, Sydni L, Trachta, Emma R, Lockwood, Christopher M, Jenkins, Nathaniel D M
Format: Article
Language:English
Subjects:
Adult
Blood Pressure
Caffeine
Cross-Over Studies
Energy Drinks
Exercise Test
Fatigue
Humans
Male
maximal oxygen uptake
muscular endurance
Oxidation
Polyesters
ventricular repolarization
Young Adult
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Summary:The aim of this study was to examine the acute effects of a non-caloric energy drink (C4E) compared to a traditional sugar-containing energy drink (MED) and non-caloric placebo (PLA) on exercise performance and cardiovascular safety. Thirty healthy, physically active males (25 ± 4 y) completed three experimental visits under semi-fasted conditions (5-10 h) and in randomized order, during which they consumed C4E, MED, or PLA matched for volume, appearance, taste, and mouthfeel. One hour after drink consumption, participants completed a maximal, graded exercise test (GXT) with measurement of pulmonary gases, an isometric leg extension fatigue test (ISO ), and had their cardiac electrical activity (ECG), leg blood flow (LBF), and blood pressure (BP) measured throughout the visit. Neither MED nor C4E had an ergogenic effect on maximal oxygen consumption, time to exhaustion, or peak power during the GXT (  > 0.05). Compared to PLA, MED reduced fat oxidation (respiratory exchange ratio (RER) +0.030 ± 0.01;  = 0.026) during the GXT and did not influence ISO performance. Compared to PLA, C4E did not alter RER (  = 0.94) and improved impulse during the ISO (+0.658 ± 0.25 V·s;  = 0.032). Relative to MED, C4E did not significantly improve gas exchange threshold (  = 0.05-0.07). Both MED and C4E increased systolic BP at rest (+7.1 ± 1.2 mmHg;  
ISSN:1550-2783
1550-2783
DOI:10.1080/15502783.2023.2297988