Barophysiology
Barophysiology concerns effects on healthy humans as exerted by changes in the ambient pressure. Substantial changes in ambient pressure are induced upon ascent to high altitude or during diving. All living organisms are affected by hydrostatic pressure changes but, save for during extreme deep diving, effects induced by hydrostatic pressure changes per se are minute in comparison with effects induced by changes in the partial pressures of the breathing-gas components, either secondary to the changed ambient pressure or caused by introducing artificial breathing-gas mixtures. Thus, to a large extent, barophysiology concerns the effects of different gases on physiological responses in humans. Since humans cannot remain immersed more than a few minutes without breathing gas supply, a large portion of the research is focused on the interplay between the human and his/her breathing apparatus.
Gas mixtures and decompression tables
Within this project we develop and test decompression tables for breathing gases other than air (nitrox, trimix), to meet requests from the Swedish Navy. In addition, we conduct experiments aimed at increasing our understanding of the mechanisms underlying decompression sickness. The work includes both computer simulations and tests on healthy human subjects.
Physiology-based adjustments of breathing apparatuses
This project concerns investigations on the effects of breathing apparatuses on human respiratory functions, as well as techniques for surveillance and testing of oxygen dosage whilst using closed-circuit breathing apparatuses.
High-altitude physiology and hypoxia
Within this project we conduct investigations of the effects on physiological and cognitive functions of reduced partial pressures of oxygen and of high-altitude exposures. The project also investigates factors affecting decompression sickness in conjunction with flying aircraft with low cabin pressures.