allows for a greater volume of blood to be pumped with each heartbeat, delivering more oxygen to the working muscles
increased LIP-aerobic
means that an athlete to work at higher intensities for longer periods of time before lactate accumulation exceeds removal rate
increased red blood cell count-aerobic
allows more oxygen to be carried in the blood, and delivered to the working muscles
increased thickness of left ventricle wall-anaerobic
allows for more forceful contractions of the heart, and more forceful ejections of blood from the heart, delivering more oxygen to the working muscles with each heartbeat
