2.2. Participants
impaired vision, daltonism, dyslexia
DALTONISM
This study included 20 healthy, male participants with moderate physical activity and without a professional sports history. Smoking, a history of high altitude expeditions, dyslexia, daltonism, and impaired vision were among the exclusion criteria for study participation. Subjects did not have any medical contraindications. All volunteers participated in a crossover study where they performed two sessions of single breathing bouts combined with moderate intensity exercise under two conditions (normoxia (NOR EX) and normobaric hypoxia (NH EX)) on different days. Due to injury (n = 1), illness (n = 1), and personal reasons (n = 1), 3 people dropped out of the experiment and 17 individuals were subjected to the final analysis. Participants underwent familiarization on all laboratory equipment a week before the intervention and were randomly assigned to one of two groups. The experiment started on the next visit. Participants performed 15 min of exercise (50% VO