Adrenergic System Activation Mediates Changes in Cardiovascular and Psychomotoric Reactions in Young Individuals after Red Bull©Energy Drink Consumption

Author:

Cavka Ana1,Stupin Marko12,Panduric Ana1,Plazibat Ana1,Cosic Anita1,Rasic Lidija1,Debeljak Zeljko34,Martinovic Goran5,Drenjancevic Ines1

Affiliation:

1. Department of Physiology and Immunology, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia

2. Department of Cardiovascular Medicine, Internal Medicine Clinic, University Hospital Center Osijek, 31000 Osijek, Croatia

3. Department of Pharmacology, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia

4. Department of Clinical Laboratory Diagnostics, University Hospital Center Osijek, 31000 Osijek, Croatia

5. Faculty of Electrical Engineering Osijek, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia

Abstract

Objectives.To assess the effect of Red Bull©on (1) blood glucose and catecholamine levels, (2) cardiovascular and respiratory function changes before, during, and after exercise, (3) reaction time, (4) cognitive functions, and (5) response to mental stress test and emotions in young healthy individuals (N=38).Methods.Heart rate (HR) and arterial blood pressure (ABP), blood glucose, adrenaline, and noradrenalin plasma levels were measured before and after Red Bull©intake. Participants were subjected to 4 different study protocols by randomized order, before and 30 minutes after consumption of 500 mL of Red Bull©.Results.Mean ABP and HR were significantly increased at rest after Red Bull©intake. Blood glucose level and plasma catecholamine levels significantly increased after Red Bull©consumption. Heart rate, respiration rate, and respiratory flow rate were significantly increased during exercise after Red Bull©consumption compared to control condition. Intake of Red Bull©significantly improved reaction time, performance in immediate memory test, verbal fluency, and subject’s attention as well as performance in mental stress test.Conclusion.This study demonstrated that Red Bull©has beneficial effect on some cognitive functions and effect on cardiovascular and respiratory system at rest and during exercise by increasing activity of the sympathetic nervous system.

Funder

Ministry of Science, Education, and Sports of the Republic of Croatia

Publisher

Hindawi Limited

Subject

Endocrine and Autonomic Systems,Endocrinology,Endocrinology, Diabetes and Metabolism

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