Fig. 1From: Hyperoxia Extends Time to Exhaustion During High-Intensity Intermittent Exercise: a Randomized, Crossover Study in Male CyclistsIndividual and mean endurance times are shown. Hyperoxic (HO) conditions, FiO2 = 0.36; normoxic (NO) conditions, FiO2 = 0.21. Values are expressed as white circle = individuals and black circle = means (n = 8). *Significant difference vs. NO (P < 0.05)Back to article page