These studies back up your claims. Thanks for sharing them. They were both done by the same people. Do you know if anyone else has tried to reproduce their results?
I would like to know the specific substances in exhalation that negatively affect humans. CO2 not being one of them would be good news.
>Those are prospective astronauts. I would expect them to be even more tolerant of CO2 and claustrophobia than submariners.
They weren't prospective astronauts, they were "astronaut like individuals". Men and women in their 30s and 40s with bachelor degrees and technical skills who can pass a modified flight physical (that from the description in the paper doesn't include any kind of C02 exposure).
Unlike submariners they aren't regularly exposed to 5,000ppm of C02, the height limit is much higher, and almost half of the participants were women.
They might be in better shape than the people in the Harvard experiment, because they screened out many medical conditions. But they are also lot older on average, and the exclusion criteria weren't particularly selective (140/90 bp for example).
Assuming good health has a protective effect you'd still expect so see some effect at 5x (5,000ppm) the level that showed an impact on the Harvard students.
They weren't prospective astronauts, they were "astronaut like individuals". Men and women in their 30s and 40s with bachelor degrees and technical skills who can pass a modified flight physical (that from the description in the paper doesn't include any kind of C02 exposure).
Unlike submariners they aren't regularly exposed to 5,000ppm of C02, the height limit is much higher, and almost half of the participants were women.
They might be in better shape than the people in the Harvard experiment, because they screened out many medical conditions. But they are also lot older on average, and the exclusion criteria weren't particularly selective (140/90 bp for example).
Assuming good health has a protective effect you'd still expect so see some effect at 5x (5,000ppm) the level that showed an impact on the Harvard students.