A football player goes from his native Miami (sea level) to play in Denver (mile
high altitude), where the oxygen concentration of the air is decreased
compared to his home. What will happen to his heart rate and cardiac output
initially until he acclimates to the new environment?
a.) His heart rate and cardiac output will decrease.
b.) His heart rate and cardiac output will increase.
c.) His heart rate will decrease, but his cardiac output will remain the
same.
d.) His heart rate will remain the same, but his cardiac output will
O
increase.