抄録
Ventilatory response to CO2 in the Ama (Kachido) was determined by the CO2 rebreathing method in the beginning (March) and during (September) harvest season.It was found that mean slopes of the ventilatory response curve in March and September were 0.76 and 0.73 liters/(min⋅m2⋅mmHg), respectively, this difference being insignificant.