On 3 separate days , 19 trained male cyclists ( 28 7 y , 76.4 10.4 kg , power output at maximal aerobic power [ pVo2max ] 417 44 W ) performed a 3-min maximal cycling bout at 105 % PVo2max before a 30-min randomly assigned recovery intervention of passive ( PAS : resting ) , active ( ACT : 30 % PVo2max ) , or NMES ( 5 Hz , 4 pulses at 500 s ) .