Which of the following is true regarding the ventilatory response during steady-state exercise? a) In phase I, maximum ventilation is reached in ...
Which of the following is true regarding the ventilatory response during steady-state exercise?
a) In phase I, maximum ventilation is reached in the first few seconds of exercise.
b) In phase III, minute ventilation increases progressively.
c) In phase II, ventilation stabilizes.
d) All statements are false.
a) In phase I, maximum ventilation is reached in the first few seconds of exercise.
b) In phase III, minute ventilation increases progressively.
c) In phase II, ventilation stabilizes.
d) All statements are false.
💡 1 Resposta
Ed 
The correct answer is c) In phase II, ventilation stabilizes. During steady-state exercise, the ventilatory response goes through three phases. In phase I, there is an initial rapid increase in ventilation to meet the increased oxygen demand. In phase II, ventilation stabilizes and matches the oxygen demand of the exercise. In phase III, ventilation may increase further if the exercise intensity continues to rise. Therefore, option c) is the correct statement.
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