A male athlete is sprinting to the finish line at the end of his race. His heart beat has increased past 160beats/min (therefore the preload decreases) are contractility and afterload increasing or decreasing? How will a decreased in preload, a _________ in contractility, and a __________ in afterload affect the cardiac output of this athlete as he races to the finish line?
Due to an increase in his heart rate, there is a decrease in ventricular filling time and thus a ...
Effects on strenuous exercise on preload, afterload, contractility and cardiac output.