in conclusion , exercise with a 25 % hematocrit reduction results in 1 ) elevated lactate , norepinephrine , epinephrine , cortisol , and irg levels , 2 ) an increased ra which is likely related to the increased counterregulatory response , and 3 ) we speculate that a near fourfold increase in mcr is related to metabolic changes due to hypoxia in working muscle .
C0028351
norepinephrine
C0014563
epinephrine