Redline energy drinks aand diabetes8/11/2023 ( 12) conducted a double blind study, with 12 female student athletes, with two different energy drinks (Phantom® and Dragon®), as well as a placebo ( 12). In an effort to determine the acute effects of energy drinks on endurance performance, Kazemi et al. The supplement improved performance 12.5 percent compared to the placebo protocol ( 18). ( 18) examined the effects of Amino Impact® energy drink on the time to exhaustion during a 70 percent VO 2max treadmill protocol. Various combinations of the ingredients in energy drinks such as caffeine, taurine, niacin, and carbohydrate, may explain some of the differential findings ( 1). However, if a person drinks any of these drinks in excess, combines these with other caffeinated beverages, and has high blood pressure or heart problems, there could be adverse effects and possibly death ( 8, 9, 12).Įnergy drinks that contain either carbohydrates or a sugar-free substance, combined with caffeine, have shown differing results relative to time to exhaustion ( 6, 9, 10, 18). Drinking energy drinks in moderation is safe for healthy individuals ( 8, 9). The most caffeine-rich energy drinks are equal in caffeine to about two eight ounce cups of coffee. Caffeine may have an indirect effect on several neurotransmitters involved in both stimulation and non-stimulation ( 9). Caffeine is a central and sympathetic nervous system stimulant. Most energy drinks contain between 80 and 170 milligrams (mg) of caffeine per serving. Despite the growing popularity of energy drinks, many do not realize the potentially negative effects on the cardiovascular system. The primary reason for energy drink consumption are purported to be for alertness and energy, as well as sports performance ( 1). Thirty percent of American male and female adolescents and young adults consume energy drinks on a regular basis ( 6, 8). Recent studies have shown that these drinks are the most popular supplement in young adults. Last year Americans spent more than $4 billion on various brands of energy drinks ( 12). Based on the results of this study, it was determined that energy drinks lowered estimated VO 2max while elevating RPP and recovery DBP.Įnergy drinks are becoming more and more popular throughout the United States. Recovery DBP was significantly higher at one min. Sub-maximal exercise heart demand (RPP: systolic BP × HR) at the same workload was considerably higher in the RL trial (224.9 ± 39.9 mmHg Although no significant differences were noted for the number of ectopic beats (ETB) between the trials, a five to one ratio for the RL and PL existed (RL = 106 total ectopic beats PL = 21 total ectopic beats). min −1) compared to the PL trial (39.7☖.5 ml.Estimated maximal oxygen consumption (VO 2max) was lower in the RL trial (37.9±5.7 ml Subjects ingested a placebo (PL) or Redline (RL) energy drink (240ml 250 mg caffeine) 40 minutes before maximal graded exercise test (GXT). Seven healthy adults (age: 24.3 ± 3.5 yrs body mass: = 66.0 ± 2.2 kg) participated in this randomized double blind, crossover study. The purpose of this study was to examine the effects of energy drink ingestion on estimated VO 2max, heart rate (HR), systolic and diastolic BP (SBP and DBP, respectively), rate pressure product (RPP), and RPE at rest and during exercise. Despite the growing popularity of energy drinks, many do not realize the negative effects on the cardiovascular system.
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