It's been a while since Catherine has tested her blowing pressure, but in years past she has always been one of the Lab's strongest blowers, regularly turning in pressures above 3psi. Lately she has been wondering whether she still "has it." Of course, she has little reason to doubt her abilities - her physical fitness regimen of today is well beyond what it has been in the past. But there's only one way to know! She begins by stretching out her cheeks, then performs a series of experiments using the rubber spirometer mouthpiece - maximum peak pressure, duration to sustain 1psi, duration to...

It's been a while since Catherine has tested her blowing pressure, but in years past she has always been one of the Lab's strongest blowers, regularly turning in pressures above 3psi. Lately she has been wondering whether she still "has it." Of course, she has little reason to doubt her abilities - her physical fitness regimen of today is well beyond what it has been in the past. But there's only one way to know! She begins by stretching out her cheeks, then performs a series of experiments using the rubber spirometer mouthpiece - maximum peak pressure, duration to sustain 1psi, duration to sustain 2 psi - all with flying colors. She then repeats the tests with the tuba mouthpiece. Which was better?