A Prospective Randomized Controlled Trial of Effect of Enhanced External Counter Pulsation to Arterial Stiffness in Chronic Hemodialysis Patient

The objectives of this study are; * To study effect of Enhanced External Counter Pulsation on arterial stiffness, as measured by pulse wave velocity, compared to standard hemodialysis treatment. * To study effect of Enhanced External Counter Pulsation on central aortic blood pressure compared to standard hemodialysis treatment. * To study effect of Enhanced External Counter Pulsation on cardiac index decline during hemodialysis compared to standard hemodialysis treatment. * To study effect of Enhanced External Counter Pulsation on intradialytic hypotension events compared to standard hemodialysis treatment. * To study effect of Enhanced External Counter Pulsation on blood biomarkers for endothelial dysfunction and vascular inflammation compared to standard hemodialysis treatment. * To identify any adverse events from utilizing Enhanced External Counter Pulsation, such as pain or uncomfortable feeling, or even uncontrol hypertension.