Question

After many months of aerobic exercise training, with the cessation of training due to illness, injury or choice, what happens to our aerobic capacity as measured by Vo₂max? Select one that best applies.

A. It does not change unless we are on complete bed rest.

B. It begins to decrease in less than a week and continues to decrease toward our genetic baseline

C. It does not change if we visualize exercise on a regular basis

D. It decreases at a very slow rate over many months

Answer 1

Answer.

B. It begins to decrease in less than a week and continues to decrease toward our genetic baseline.

• When you go a few weeks without physical activity , your heart not only begins losing its ability to handle extra blood flow, your body ability to effectively use oxygen , referred to as VO2 max , decline.
• Research shows significant reductions in VO2 max within two to four weeks of detraining , which is attributed to decreased blood volume and cardiac output.
• Another study found that most of the aerobic capacity gained through exercise over two to three months is lost within two to four weeks.