Energy Drink before Exercise Did Not Affect Autonomic Recovery Following Moderate Aerobic Exercise: A Crossover, Randomized and Controlled Trial

Abstract

Introduction: Energy drink (ED) intake could initiate physiological changes owing to its stimulant characteristics and, it improves endurance and athletic performance. We evaluated the acute effects of ED on autonomic heart rate (HR) control during recovery after a session of submaximal aerobic exercise. Method: The study was completed by submitting 29 healthy males between 18 and 30 years old to three conventions: (A) Maximum exercise test by the adapted Bruce protocol; (B) Placebo protocol (PP) -water intake 15 minutes prior to exercise, rest in dorsal decubitus for 15 minutes followed by 5 minutes of treadmill running at 1% inclination, initial speed of 5 km/h for 5 minutes 25 minutes with 60% of the velocity consistent to the maximum oxygen consumption (VO2max), and finally 60 minutes of recovery at rest in the supine position; (C) Experimental protocol (PE) -similar to PP previously, but with ED intake 15 minutes before physical exercise. The time, frequency and geometric indexes of HR variability (HRV) were inspected before and after exercise.Results: There was a significant (p <0.05, <5%) effect on the HRV index (HR-nu and ms 2 , LF-nu and ms 2 , LF/HF, SD1, SDNN and RMSSD), indicating a reduction in HRV in the first 5 minutes after exercise in both protocols (PP and PE). Yet, no protocol interaction was detected, suggesting no effect of ED on HRV throughout recovery after submaximal aerobic exercise. Conclusion: There was no significant effect of ED on the autonomic control of HR in the recovery phase after submaximal aerobic exercise.

Efeitos Agudos da Bebida Energética sobre Parâmetros Autonômicos e Cardiovasculares em Indivíduos com Diferentes Capacidades Cardiorrespiratórias: Um Ensaio Controlado, Randomizado, Crossover e Duplo Cego

“…Recentemente, nosso grupo relatou que a BE não é capaz de adiar a recuperação da FC após o exercício. 15 No estudo citado, 29 homens sadios com idade entre 18 e 30 anos realizaram exercício aeróbico após ingerirem BE ou placebo. Houve uma importante redução na VFC nos primeiros cinco minutos pós-exercício em ambos os protocolos.…”

“…13 Até o presente momento, estudos que avaliaram os efeitos das BEs sobre a recuperação da FC não os comparou entre populações de diferentes perfis cardiorrespiratórios. [14][15][16][17] Uma dose modesta de aproximadamente 250mL de BE parece não afetar a recuperação da FC após o exercício em indivíduos treinados. [14][15][16] Porém, nenhum estudo levou em consideração a capacidade cardiorrespiratório dos indivíduos e, portanto, ainda existe uma lacuna na literatura.…”

“…[14][15][16][17] Uma dose modesta de aproximadamente 250mL de BE parece não afetar a recuperação da FC após o exercício em indivíduos treinados. [14][15][16] Porém, nenhum estudo levou em consideração a capacidade cardiorrespiratório dos indivíduos e, portanto, ainda existe uma lacuna na literatura.…”

Heart Rate Variability Behavior during Exercise and Short-Term Recovery Following Energy Drink Consumption in Men and Women

“…Heart rate variability parameters post-exercise have been increasingly studied after consumption of caffeine and energy drinks [ 4 , 36 , 38 ]. There seems to be an agreement that the suppression of cPNA reactivation post-exercise can be unfavorable for increased susceptibility of a cardiac event [ 8 ].…”

Can Beetroot Extract Influence Cardiovascular And Autonomic Recovery From The Effort In Healthy Males? A Randomized Trial

“…Analysis of cardiac activity recovery after exercise is a practical and reliable technique for stratifying the risk of disease and adverse cardiovascular events 9 . Numerous studies have xated on investigating whether nutritional interventions (e.g., energy drinks, caffeine) [11][12][13][14] can induce a delay in the recovery of HR and HRV and so increase cardiovascular risk. Others researches pursues the identi cation of compounds that optimize these parameters and minimize the cardiac stress produced by physical exercise 15 .…”