(HealthDay News) – Consumption of an energy drink containing taurine and caffeine increases the contractility of the left ventricle an hour later, according to a study presented at the annual meeting of the Radiological Society of North America, held from Dec. 1 to 6 in Chicago.

Jonas Doerner, MD, from the University of Bonn in Germany, and colleagues used cardiac magnetic resonance imaging to investigate the effect of consuming an energy drink on myocardial function in 18 healthy young volunteers.

The researchers found that one hour after consuming an energy drink, systolic left ventricle-contractility (as assessed by peak strain and peak systolic strain rate) significantly increased. There were no significant changes in diastolic left ventricle-relaxation (based on peak diastolic strain rate), left ventricle function (ejection fraction), or vital parameters (heart rate, blood pressure).

“Energy drink consumption lead to changes in left ventricle-contractility, which can be assessed by cardiac magnetic resonance tagging and strain analysis,” Doerner and colleagues conclude.

One author is a consultant for Medtronic.

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