Respiratory performance of humans exposed to moderate levels of carbon dioxide

In a business as usual scenario, atmospheric carbon dioxide concentration (CO2) could reach 950 parts per million (ppm) by 2100. Indoor CO2 concentrations will rise consequently, given its dependence on levels. If buildings are ventilated following current standards in 2100, indoor be over 1300 ppm, depending specific ventilation codes. Such exposure to have physiological and psychological effects building occupants. We conducted randomized, within-subject study, examining the respiratory functions of 15 persons. examined three exposures, each 150 min long, with of: 900 ppm (reference), 1450 (decreased ventilation), (reference condition added pure CO2). measured parameters capnometry forced vital capacity (FVC) tests. End-tidal respiration rates did not significantly differ across exposures. Parameters using FVC decreased from start end only at reduced (p < 0.04, large effect size). Hence, poor likely affects parameters. This is probably caused increased alone rather other pollutants—predominantly human bioeffluents this work—whose result.