In terms of the factors that limit VO₂ max, improvements elicited by endurance training generally first affect ____________, and then ___________ after several weeks/months. A) a-vO₂ difference; cardiac output B) cardiac output; a-vO₂ difference

Question

Quizplus · Accepted Answer

Endurance training initially improves cardiac output, which results in an increase in VO₂ max. After several weeks/months, improvements in the a-vO₂ difference occur due to increased capillary density and muscle mitochondria, leading to a higher extraction of oxygen by the working muscles. Therefore, option B is the correct choice.

In Terms of the Factors That Limit VO2 Max, Improvements

In Terms of the Factors That Limit VO₂ Max, Improvements