Table 1.

Portable hyperbaric oxygen chambers were used as a form of mild hyperbaric oxygen treatment (mHBOT) with the given conditions compared to traditional HBOT. Atmosphere absolute (ATA) of 1 ATA is the atmospheric pressure at sea level measured with a barometer. mHBOT uses 1.3 ATA compared to 2–3 ATA in traditional chambers. Pound per square inch gauge (PSIG) is the pressure referenced to ambient air pressure indicated by a pressure gauge using atmospheric pressure as a base. This value in mHBOT, 4.7, is much milder than the 14.7–29.4 value in traditional HBOT. Feet of sea water (FSW) is used to indicate either an actual depth, or in this case, a pressure equal to that depth as can be used to describe a hyperbaric chamber. Again, less pressure is applied to the chambers used in this study. The oxygen concentration is mildly elevated from 21% in air to 24%, yet, is much less than the 100% oxygen concentration used in traditional chambers

	Sea level	Mild HBOT	Traditional HBOT
ATA	1.0	1.3	2.0–3.0
PSIG	0	4.7	14.7–29.4
FSW	0	11	33-66
Oxygen concentration	21%	24%	100%