What is a key reason the respiratory system is not usually a limiting factor in healthy individuals during maximal exercise?

Question

What is a key reason the respiratory system is  not  usually a limiting factor in healthy individuals during maximal exercise?

Answer

Ventilation-perfusion mismatch increases

Answer

Pulmonary gas exchange remains effective

Answer

Diaphragm fatigue limits ventilation

Answer

Arterial oxygenation drops significantly

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