Is there any chance of Oxygen toxicity with EWOT?

Historically, the British military's underwater research in 1947 shed light on oxygen toxicity and its rare occurrence. Oxygen toxicity typically arises only at extraordinarily high oxygen partial pressures, as in the case of deep diving or military-grade equipment, leading to oxygen toxicity. 

Manfred von Ardenne’s protocols, central to Exercise with Oxygen Therapy (EWOT), utilize oxygen levels significantly below these extremes. No reports have associated Ardenne's protocols with harm or oxygen toxicity symptoms in any individual. Athletic and non-athletic protocols maintain substantial safety margins of 75% and 95%, respectively.

Based on comprehensive research documentation, the potential for oxygen toxicity effects is nonexistent within the realm of Oxygen Multistep Therapy and EWOT-based Turbo Oxygen System. This is because they cannot produce high enough oxygen for extended periods of time to induce these effects. Investigating oxygen toxicity necessitated exposing subjects to 17.9 atmospheres or simulating oxygen inhalation at a depth of 538 feet underwater, a notably extreme scenario.

The maximum oxygen levels attainable through any OMT system remain significantly below a quarter of the recognized oxygen partial pressures associated with potential toxicity effects in individuals. Over the course of the last three decades, there has been a complete absence of reports indicating that any of Ardenne's protocols have resulted in any sign of oxygen toxicity in any individual.