Question

In athletes, physical fitness is more closely correlated with

A. Maximal oxygen uptake than with resting oxygen uptake.

B. Maximal pulse rate than with resting pulse rate.

C. Maximal minute ventilation than with maximal cardiac output.

D. Blood oxygen saturation than with blood *** level during strenuous exercise.

E. Resting vagal tone than with resting sympathetic tone to the heart.

Answer 1

A. True Maximal oxygen uptake is the ‘gold standard’ of fitness.

B. False Maximal pulse rate is related to age; a slow pulse indicates fitness.

C. False Cardiac output is the usual limiting factor in exercise.

D. False Saturation changes little during exercise; a relatively low *** level during strenuous exercise is an indication of fitness.

E. True A high resting vagal tone is the cause of the low resting heart rate.