How is minute ventilation affected by exercise?
a. there is a sharp initial decrease in the depth of breathing
b. the more intense the exercise, rate of breathing substantially increases and the depth of breathing has a secondary, less pronounced increase
c. it can increase up to 30-fold during high intensity exercise
d. the respiratory rate increases but the tidal volume decreases
Answer: b. the more intense the exercise, rate of breathing substantially increases and the depth of breathing has a secondary, less pronounced increase
During exercise, minute ventilation is affected based on intensity as the rate of breathing substantially increases and the depth of breathing has a secondary, less pronounced increase. This is preceded by a sharp initial increase in tidal volume, which continues to increase with intensity.