Ventilatory Response to Carbon Dioxide during Moderate Exercise

Ventilatory Response to Carbon Dioxide during Moderate Exercise: Masayoshi TAKAHASHI, et al. National Institute for Resources and Environment—Elevated carbon dioxide (CO 2 ) concentration is one of the most important physiological stressors with closed-circuit breathing-apparatus (CCBA). We determined the ventilatory response to CO 2 during moderate exercise by measuring the . relationship between V E and P ET CO 2 . Based on our findings, it is recommended that the permissible inhaled CO 2 limit for CCBA in the Japan Industrial Standard (JIS) be lowered from 3% to 2%, and that the members of a rescue or fire fighter team who use CCBA be selected on the basis of their ventilatory sensitivity to CO 2 . (J Occup Health 2000; 42: 79-83)