Provoked periodic breathing in simulated moderate and high altitude in healthy young adults

Background: It's common sense that periodic breathing increases linear with greater heights. Cut off points for periodic breathing at specific altitudes are not known and seem to be very individual. Our aim was to study the difference of breathing patterns n healthy adults between simulated 3500 m and 4500 m. Methods: 12 male and 6 female subjects with a mean age of 24,78 ± 1,86 had a 12 channel PSG randomly assigned at either 3500 m or 4500 m simulated altitude (Normobaric hypoxia, Low Oxygen Systems; Berlin-Buch, Germany). Results: We've seen a statistically high significant decrease in total sleeping time and…