Active_comparator: AIH + TST

Participants will complete a 5-day intervention blocks where they receive daily AIH followed by task specific airway protection training 60 minutes after the AIH exposure. Each exposure involves a 1-minute delivery of low oxygen (9-11% inspired O2), followed by a 1.5-min interval of room air breathing (21% O2). This method of waiting 45-60 minutes after the delivery of AIH and prior to engaging in task-specific training/rehabilitation enables sufficient time to increase brain derived neurotrophic factor (BDNF) following AIH, thereby augmenting the impact of task-specific training.

Sham_comparator: Sham AIH + TST

Participants will complete a 5-day intervention blocks where they receive sham AIH followed by task specific airway protection training 60 minutes after the AIH sham exposure. Sham AIH will be delivered using methods identical to AIH, except a normoxic gas mixture (\~21% O2) will be delivered. The gas mixture with normoxic air will effectively serve as a sham.