Losin B.E., Dr. Hab., Professor
Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg

Grigoryeva D.V.
Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg

Minina L.N., PhD, Associate Professor
Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg

Sergazinova M.A., PhD
Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg

Objective of the study was to study of the dependence of competitive performance indicators of qualified basketball players on the speed of jump execution.
Methods and structure of the study. The scientific work involved 17 qualified basketball players. The components of the players' jump speed (reaction speed when performing a jump, the time of the motor phase of the jump, the speed of jumping out, etc.) were determined based on the use of a dynamo platform with an automated TASS system (Speed ​​and Strength Trainer-Analyzer). The calculation of game indicators was made based on the data of statistical protocols of games.
Results and conclusions. The effectiveness of competitive activity in modern basketball is influenced by various indicators of players' preparedness. An important one is jump speed. The conducted study revealed a statistically significant influence of jump speed indicators on such game parameters of basketball players as points scored in the game, the number of rebounds under the hoop and the player's usefulness coefficient.
The conducted survey revealed the opinion of coaches on the importance of monitoring the level of jump speed in the process of training basketball players. At the same time, almost half of the respondents noted that they experience serious difficulties in assessing this indicator. In the current situation, it is necessary to find simple tests and their scientific justification for assessing the speed of basketball players' jumps.

Keywords: jumping speed, competitive performance, basketball.

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