Fig. 2From: The effects of endurance exercise in hypoxia on acid-base balance and potassium kinetics: a randomized crossover design in male endurance athletesChanges in blood lactate (a) and glucose (b) concentrations. Values are means ± standard error (SE). The shaded box indicates the duration of exercise. *Significant difference compared with pre-exercise (Pre). †Significant difference between the normoxic (N) and hypoxic (H) trialsBack to article page