Key result
Low-dose energy drink acutely improves RV systolic function versus control drink.
Why the study?
Energy drinks contain high levels of caffeine and taurine and are associated with several cardiovascular effects, but the acute effects of low caffeine and taurine content energy drinks on ventricular function are unclear.
Does acute consumption of a low caffeine and taurine energy drink alter left and right ventricular function in healthy adults?
RCT (n=34)
Does acute consumption of a low caffeine and taurine energy drink alter left and right ventricular function in healthy adults?
p-value: p=0.04
Acute consumption of low-dose caffeine and taurine energy drinks increases right ventricular longitudinal contractility and alters left ventricular early diastolic filling in healthy adults.
Acute low-caffeine/taurine energy drink intake was associated with enhanced RV contractility in healthy adults; hypothesis-generating, should not change practice.
Aim Energy drinks (ED) contain high levels of caffeine and taurine and are associated with several cardiovascular effects. We investigated acute effects of consuming low caffeine and taurine content ED on left ventricular (LV) and right ventricular (RV) function assessed by conventional and two-dimensional speckle tracking echocardiography.Material and methods In this crossover study, 34 healthy adults, age 19-48 yrs, drank an ED containing 53.25 milligrams of caffeine, 284 mg of taurine, or an equal volume of control drink (CD) on two separate sessions, 7-10 days apart. Standard echocardiographic and speckle tracking imaging were performed before and 60 min after consumption of the study beverages.Results Compared to CD, ED caused a significant increase in tricuspid annular plane systolic excursion (p=0.04) and RV systolic wave velocity (p=0.01) with no effect on global longitudinal strain when compared to CD. LV systolic function was not altered, but mitral early diastolic velocity by tissue Doppler imaging was significantly higher (p=0.031), and early diastolic strain rate, as measured by speckle tracking echocardiography, was significantly lower (p=0.022).Conclusion Reduced caffeine and taurine content ED does not affect LV systolic function, but increases RV longitudinal contractility and improves LV early diastolic filling.
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Kaya et al. (2022) conducted an RCT in Healthy (n=34). Energy drink vs. Control drink was evaluated on Tricuspid annular plane systolic excursion (p=0.04). Consumption of a low caffeine and taurine energy drink significantly increased tricuspid annular plane systolic excursion (p=0.04) and RV systolic wave velocity (p=0.01) compared to a control drink.
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