Abstrakt
Relationship between muscle strength and movement realization is one of the criteria for explosive strength evaluation. Muscles are producing higher velocity of the body segment (Cabri, 1988).
Better muscles coordination enables more effective increase in the movement activity with regard to its length (Zernicke, 1978). There were 11 young elite football players in this study (age 18,4+-0,9 years; height 183,9+-5,9 cm; weight 74,2+-7,7 kg).
Force platforms (Kistler, Switzerland) were used for explosive strength assessment. Kinematic analyser CODA was used for lower limb's 3D movement evaluation.
The velocity of the ball was measured by radar equipment Stalker ATS. The main parameters of explosive strength during the vertical jump were: height of the jump (cm), breaking impulse (Ns-1), acceleration impulse (Ns-1) and time phases duration.
The movement of the lower limbs and velocity of the ball were evaluated as kinematics parameters. The study confirmed that players with higher vertical jump achieved a higher speed when kicking a ball.
There was a significant correlation between explosive strength of lower limbs and the speed of the ball (r = 0,739; p { 0,01). There was also a significant correlation between height of countermovement jump free arms and weight of players (r = 0,812; p { 0,01).