blood samples were collected at rest and at exhaustion for estimations of plasma norepinephrine ( ne ) , epinephrine ( e ) , free fatty acid ( ffa ) and glucose concentrations , during the last 15 s of each exercise step and also during the 1st , 4th , 7th , and the 10th min following exercise for the determination of blood lactate ( la ) concentration .
C0028351
norepinephrine
C0014563
epinephrine