Ventilatory and perceptional response during recovery as function of recovery time in MM patients and C subjects. V̇e, expired minute ventilation (A, B); V̇e/V̇o2, ventilatory equivalent for O2 (C and D); V̇e/V̇co2, ventilatory equivalent for CO2 (E and F); RER, respiratory exchange ratio, V̇co2/V̇o2 (G and H); and RPB (I and J). Starting values are peak exercise values for both groups.