Eleven recreationally active male participants ( 24 4 years , 173 20 cm , 82 12 kg , 15.2 7.1 % fat , 4.0 0.6 L/min maximal oxygen consumption ) completed two 1-hour cycling exercise trials at 60 % of peak power followed by 4 hours of recovery in ambient environmental conditions ( 975 m ) and at normobaric hypoxic conditions simulating 3000 m in a randomized counterbalanced order .