EVALUATIONS OF THE COMFORT ASSOCIATED WITH BREATHING AIR WITH A 30 OXYGEN CONCENTRATION-EVALUATIONS RELATED TO THE DEGREE OF MENTAL COMFORT

摘要

This research studies changes in the degree of mental comfort associated with varying levels of oxygen in living environments. Oxygen-enriched air was supplied through an oxygen supply system fitted with an oxygen enrichment membrane. The degree of mental comfort was determined by analyzing the fluctuating rhythm of subjects' brain wave cycles and through subjects' subjective statements concerning alertness levels. Comfort was evaluated using the Kraepelin Test. It compared stress levels when subjects breathed normal air and when they breathed oxygen-enriched air. When under the stress of the Kraepelin Test, our outcomes showed improved test results for those subjects who breathed oxygen-enriched air compared to when they breathed normal air.Furthermore, levels of comfort were significantly increased after testing.