What Researchers Did
Researchers investigated whether short, repeated exposures to high pressure in a hyperbaric chamber could help people adapt to the effects of nitrogen narcosis.
What They Found
The study found that standing steadiness was significantly worse at 5.5 ATA compared to 1.3 ATA across all 12 exposures. Although daily changes in steadiness occurred, these happened at both the test and control depths, indicating no specific reduction in performance decrement at 5.5 ATA with repeated exposures. These results suggest little to no behavioral adaptation to nitrogen narcosis from brief, repetitive exposures.
What This Means for Canadian Patients
For Canadian divers, this study indicates that brief, repeated exposures to narcosis-inducing depths may not lead to adaptation or tolerance to nitrogen narcosis. Divers should continue to prioritize safety and avoid depths that cause narcosis, as the body may not develop a behavioral ability to cope with its effects over time.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
The study was limited by its very small sample size of only six male participants.