The frequency and the efficiency of selected game skills of football goalkeepers in categories U16, U17, U19 and U21 in the Czech Republic.

Topic: The frequency and the efficiency of selected game skills of football goalkeepers in categories U16, U17, U19 and U21 in the Czech Republic. Aim: Determining the frequency and the efficiency of selected game skills at the goalkeeper's position for the age groups U16, U17, U19 and U21. Methods: For collecting data was used indirect observation method via video. The research sample included respondents (player function - goalkeeper) from the highest levels of performance in the Czech Republic in the junior categories (U16, U17, U19 and U21). Half of the goalkeepers were monitored in home matches, the second half were monitored in away matches. Results: Goalkeepers of the U21 category achieved significantly higher efficiency in indicator catching of the ball into the hands (Cohen's d = 0.92) compared to the U16 category. Substance insignificant differences were detected in contrary indicator of the efficiency of the foot play and the frequency of foot play between U21 and U16 categories. The rally by hands was examined, to be the most effective way to rally, of all categories. Category U21 dominated in terms of efficiency in catching the ball out of steady position and also the U21 most commonly practiced playing outside the penalty area. Skill of catching the ball, unlike stereotypes of..