A number of effects are reported. It is important to differentiate between physiological adaptations to mild<unk>  and re-oxygenation episodes (i.e., the<unk>  protocol) and frequent nocturnal suffocation awakenings produced by sleep apnea, which might result in various pathologies. It has been used to try to improve performance in sports.<unk>  has been also been used in a number of health conditions.
Intermittent hypoxic training
Intermittent positive pressure breathing
Hyperinflation therapy
Nicotine replacement therapy
Graded exercise therapy
Heated humidified high-flow therapy
Targeted lung denervation
Transdermal continuous oxygen therapy