A modified method is suggested for the assessment of some anaerobic parameters measured during a vertical rebound jumping series. The test is based on the registration of flight and contact times of every single jump by means of a computer device fitted to a jumping platform. Mechanical power in the active phase of a jump, the height of a jump, acceleration and velocity were calculated according to the laws of mechanics during a 10 second test duration.The test‐retest correlation at different frequencies of jumps demonstrated a low reliability of measurement at frequencies of 60 and 80 per minute. Only a maximum frequency of jumps led to a sufficient reliability of the test, especially in younger age groups. From among the various modes of expression of the results the highest test‐retest correlation was found for the measurement of power in the active phase of jump per kg of body weight and acceleration in the active phase. Both were assessed from the mean of three maximal jumps in one trial.The described test allows measurement of important parameters of anaerobic capability in athletes using a relatively simple measurement device.