Hi Richard,
The only reason I shot the video was to illustrate the ease of use and effectiveness of the CPR mask. I wanted the video to be short which is why the ratio is inaccurate. My little girl was practicing chest compression but she was not pushing hard, merely going through the motion.
I agree that chest compression should be trained on manikins but the mask is best illustrated on real people. There is no inexpensive manikin currently that has a space between the lips and gumteeth to demonstrate the mask. Plus, it is actually very easy to seal effectively on a manikin with traditional face mask and face shields. It is much more challenging, however, to seal on a real person, especially with facial hair, secretions, facial anatomy, etc.
My point was to show how easy it is to use the mask as a barrier device as opposed to the currently available face mask out there.
Bill