Effects of long-term,rigorous training include all of the following EXCEPT:
A)the heart becomes larger.
B)the stroke volume of the heart increases.
C)blood hemoglobin levels fall.
D)numbers of red blood cells increases.

Question

Quizplus · Accepted Answer

Long-term, rigorous training is known to increase blood hemoglobin levels due to an increase in red blood cell production, which improves oxygen delivery to the muscles. Choices A and B are correct as the heart adapts to the increased demand for oxygen by becoming stronger and more efficient in pumping blood. However, blood hemoglobin levels do not fall as a result of rigorous training.

Effects of Long-Term,rigorous Training Include All of the Following EXCEPT