Fig. 5.

Ventilatory response to altered levels of carbon dioxide. A: average slope and intercept was 2.83 ± 0.46 L·min⁻¹·mmHg⁻¹ and −104 ± 19 L/min for controls and 1.94 ± 0.31 L·min⁻¹·mmHg⁻¹and −67 ± 13 L/min for high-affinity hemoglobin (HAH). B: average slope and intercept was 3.75 ± 0.63 L·min⁻¹·mmHg⁻¹and −138 ± 25 L/min for controls and 3.30 ± 0. L·min⁻¹·mmHg⁻¹ and −119 ± 23 L/min for HAH. V̇e, ventilation; $\text{P}{\text{a}}_{\text{C}\text{O}}{}_{{}_2}$, arterial carbon dioxide tension; H⁺, hydrogen ion concentration.