Objective of the study was to determine the changes of maximum muscle torque of knee joint extensor muscles under static conditions in the training microcycle using different protocols of warm-up exercises. The study included 5 training units in the preparatory period. The test procedure included 2 measurements during one training unit. The first measurement was taken before the warm-up, the second after the end of the warm-up, and before starting the proper part of the training. During the performance of individual training units, specific warm-up protocols were applied to 15 weightlifters. A statistically significant (p<0.05) increase in the torque of knee joint extensor muscles between the measurements taken before and after warm-up was observed in the second (II) (p=0.001), fourth (IV) (p=0.04) and fifth (V) (p=0.001) measurement day, when dynamic exercises were used in the protocol. Average values after the application of vertical jumps in place caused an average increase in value by 7.52%. The results of the conducted analyses confirm the validity of dynamic exercises often used in practice after a long waiting time for an approach during the competition in weightlifting. Carrying out such measurements may be a guide for the trainer to select the exercises during the programming of the competition warm-up.
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