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The aim of the study was to determine the effects of plyometric training on the explosive power of the lower extremities, sprint and the change of direction speed. The sample of the respondents consisted of 33 basketball players of OKK "Stari Ras" and OKK "Novi Pazar" from Novi Pazar. The respodents were divided into two groups: experimental group (E; n=16), age (15.3±0.4years), body height (185.45±8.75cm), body weight (76.87±11.51kg), with training experience (4.69±1.40years) and control group (K; n=17), age (15.4±0.5years), body height (184.16±6.93cm), body weight (73.68±11.70kg), with training experience (5.53±3.18years). The experimental group consisted of basketball players from basketball team OKK "Stari Ras", who in addition to the basic technical and tactical training, also had plyometric training. The control group consisted of the basketball players from basketball team OKK "Novi Pazar", who at that time had only technical and tactical training. To assess the explosive power of the lower extremities, were used: Squat Jump (SJ), Countermovement Jump (CMJ), Drop Jump (DJ) and Countermovement Jump with Arm Swing (CMJ/AS). For sprint assess: Sprint Speed at 5m (S5m), 10m (S10m) and 20m (F20m). To assess the change of direction speed: Reactive Shuttle Test (RST), Lane Arrow Closeout (LAC), Lane Agility Drill (LAD) and Modified 505 Test (M505). The experimental program, which involves the use of plyometric training, lasted for 10 weeks, and every week they conducted two training sessions. Plyometric training lasted from 45min at the beginning of the experiment to 70min at the end of the experiment. Each plyometric training consisted of three parts: introduction, main and final part. The data obtained by the procedure described above are processed by the statistical program SPSS 19. To determine the effect of plyometric training on the motor skills of basketball players, the analysis of covariance ANCOVA was used. The results showed that after experimental treatment, E group achieved significantly greater progress than group K in the following tests: SJ, CMJ, DJ, S5m, S20m, RST, LAC and LAD. There was no difference between the E and K groups on the CMJ/AS, S10m and M505 tests. Based on these results, it can be concluded that the plyometric training had positive effects on the development of explosive power of the lower extremities, sprint and change of direction speed of young basketball players.

Asymmetry in limb use is a phenomenon that is present in daily life, and therefore also in the sport. It´s presence is a consequence of lateralization at the level of the CNS. The primary objective of the study that was realized is to determine the to which extent asymmetry is present in limb use in basketball, and how unilateral type of training impact on the reduction of the same. A secondary objective was to determine how basketball affects on the uneven use of extremities compared to healthy school population that is not actively involved in sports training. Research included 45 boys aged 15, who were divided into three groups: Experimental, Control 1 and Control 2. Tested variables are explosive strength of leg extensors, explosive strength of arm extensors, agility, reaction time and dribbling control. In the experimental group was realized a corrective training, composed of 24 units for a period of eight weeks. The training was focused on the limb that has proven to be a weaker in the initial testing, and training methods were applied: circuit training, working at stations and complex training. The results were analyzed by the coefficient of asymmetry, One Way ANOVA, Mixed Design ANOVA and the percentage difference from the same limb at the initial and final testing. Results of the research indicate that the variables that most influenced by the corrective training are explosive strength of leg extensors and explosive strength of arm extensors, while the other variables were also made progress and have a positive trend in reducing the asymmetry, but not that much. It was also found that basketball has a positive effect in that ages on the level of asymmetry in the use of limbs as opposed to sedentary school population.