Heart function determination by analyzing sympathetic and vagal activity of ECG signal after having energy drinks

In this work, sympathetic and vagal activity are the two component of heart rate variability (HRV) measurements of ECG signal were analyzed to determine the effect of having energy drinks on heart function by observing 12 healthy human subjects. After 6 min observation in both conditions it was found that after having energy drinks sympathetic activity was increased and vagal activity was decreased. From the previous research it is shown that heart rate is increased by slow acting sympathetic activity or decreased by fast acting parasympathetic (vagal) activity. Significant differences of sympathetic and vegal activities in both condition i.e., before and after having drinks are same i.e., 0.0045. So that to determine the effect of having energy drinks on heart function sympathetic-vagal balance was analyzed by the two component of sympathetic and vagal activity. It was observed that sympathetic-vagal balance was increased that indicates R-R interval increased as well as decreases the heart rate. Raw RR techogram also used to analyze the interval of RR. After having energy drinks a significant change also observed in sympathetic-vagal balance.