The aim of this work was to compare two power programs with different intensity and different rest interval in the summary length of the competitive boxing match with respect to Pmax production and following decline in efficiency also with respect to physiological parameters of heart rate and lactate level. The power programs consisted of repeating the one power clean repetition – to run on the regular intervals after the beep. The performance was measured in watts by TENDO power analyzer. Under the weight of 65 kg barbell and after the 39 repetitions was the average power 763, 36±48, 7W and overall performance decline was 11, 87%. Under the weight of 55 kg barbell and after the 57 repetitions was the average power 796, 67±21W and fatigue index 0, 66%. The highest heart rate was in the both cases 162bpm, which is 91% from maximum. The lactate level was in the first case 11, 6mmol and in the second case 12, 6mmol. In development of endurance in power in the specific time mode we recommend the weight of the barbell around 85% from the maximum power weight where we can achieve similar values as with the maximum power weight while the fatigue index retains lower percentage level. We recommend join this power program to the training process of fighting sports.