Are these portable at home machines that you lay in something you can do yourself or is it a two person operation
Don’t really know. I have not looked at them. One important thing to consider is the range of max depth of pressurization they are designed for. Most of the studies I have read use a very shallow depth of pressuration, Sometimes only 12 to 15’ which is only 6 to 8 psi. The calculation is .445 X FEET = psi @ that depth. Example: PSI of 30’ of sea water is .445 X 30= 13.35 psi.
The max depth which oxygen can be breathed safely is 60’ We routinely use 100% oxygen at a depth of 40 to 50’ for surface decompression of divers after deeper dives.
We have a standard double lock decompression chamber that is a standard piece of equipment found on commercial diving jobs. Its capable of recompressing a diver to 165’ if necessary for treatment of serious decompression illness or arterial gas embolism. Because of the research I have done on HBO2 When we have time we will go in and do a hour long session on oxygen usually at a depth of 33 to 40’. This is because we are convinced of the great health benefits it offers.