Abstract
The purpose of the study was to find out the level of isokinetic strength of knee extensors and knee flexors, and to compare the selected characteristics of isokinteic strength related to the movement velocity and limb dominancy in very young players (U9 category). Strength was tested by isokinetic dynamometer Cybex Humac Norm at three angular velocities (60-180-300 deg/s).
The results indicated significant differences in strength and hamstring to quadricpes ratio in relation to movement velocity. On the contrary, no significant differences were found in bilateral ratio between legs (quadricpes, hamstring).
Limb dominancy did not significantly affect any of the observed characteristics. The presented data may contribute to comparison or establishment of standards for strength profile in this age category.