Voronov A.V.
Federal Science Center of Physical Culture and Sports (VNIIFK), Moscow

Shpakov A.V.
Federal Science Center of Physical Culture and Sports (VNIIFK), Moscow

Sokolov N.N.
Federal Science Center of Physical Culture and Sports (VNIIFK), Moscow

Voronova A.A.
Federal Science Center of Physical Culture and Sports (VNIIFK), Moscow

Objective of the study was using contact mats to evaluate the height of three types of vertical jumps, the maximum moment of the knee extensor muscles.
Methods and structure of the study. The experiment involved 215 highly qualified athletes (men and women, MS-MSIC), as well as U16-U18 soccer players. Athletes performed three types of upward jumps with pushing off with two legs: squat jump, countermovement jumps, countermovement jump with arms swing.
Results and conclusions. A comparison of the height of jumps from a half-squat with isokinetic dynamometry data showed that the correlation coefficients (r) between the height of jumps and the acting moments of the quadriceps at an angular velocity of extension in the knee joint of 60 degrees /s vary from 0.5 to 0.9, depending on the sport. The height of jumps due to the use of elastic properties of muscles (due to squatting) and the reactive forces of arm swing is on average 30.4±8.6% higher than the height of jumps from a half-squat. Cyclists had the highest coordination coefficients (KK) (K>15%). Football players and cyclists have an elasticity coefficient 2-3 times higher than that of speed skaters and skiers (among men). In women, the potential for accumulation of elastic energy does not exceed the value of CE <7%.

Keywords: biomechanical characteristics, muscles of the lower extremities, LED contact track, athletes, upward jumps, isokinetic dynamometry, jumping height, normalized moments.

References

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