Lecture 21

Question 1

How does training affect TPR?

Answer 1

Training will cause TPR to decrease, due to an increase in vessel lumen size, and a decrease in vessel wall thickness

Question 2

What increases first during exercise training: RBC volume or plasma volume?

Answer 2

Plasma volume increases first, which provides more total blood volume, increasing cardiac output/VO2max

Question 3

How do SNS signals vary from trained individuals vs non-trained individuals?

Answer 3

Trained individuals’ SNS activity is decreased, decreasing NE, resulting in less vasoconstriction of blood vessels

Question 4

How does training affect mitochondria density?

Answer 4

It increases the number and the size of mitochondria, as well as increasing Krebs’ cycle/ETC enzymes