At sea level, from rest to exercising at a oxygen consumption of2 liters / min, your heart rate, ventilation and SaO2 increases by60 beats/min, 50 l/min and 1%, respectively. You repeat the sameexercise at 5000m. Here, heart rate increases by 90 beats/min andventilation increase by 80 l/min; your SaO2 decreases by 15%.Explain these changes.
