Effect of hyperventilation and prior heavy exercise on O2 uptake and muscle deoxygenation kinetics during transitions to moderate exercise

The effect of hyperventilation-induced hypocapnic alkalosis (HYPO) and prior heavy-intensity exercise (HVY) on pulmonary O2 uptake $$ (\dot{V}{\text{O}}_{{ 2 {\text{p}}}}) $$ kinetics were examined in young adults (n = 7) during moderate-intensity exercise (MOD). Subjects completed leg cycling exercise during (1) normal breathing (CON, PETCO2 ~ 40 mmHg) and (2) controlled hyperventilation (HYPO, PETCO2 ~ 20 mmHg) throughout the protocol, with …