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The aim of this paper is to review and summarize the theoretical and empirical facts of using the (BMI), (body mass index) in determining the relationship between body constitution and motor skills. Several key circumstances have been identified in which the body mass index can give erroneous information about the actual body composition, and especially about the amount of adipose tissue in the body. Factors such as age, sex, race, health status and muscle mass can influence the connection between(BMI) and body fat. Due to a relatively low coefficient of determination between (BMI)and percentage of body fat, one should be cautious when using (BMI) to evaluate body composition as a predictor of obesity or as a substitution measure in evaluating the influence of body constitution on the efficiency of motor performances. The analysis of the sources indicates that the existence of unexplained facts uses alternative measures of body composition and their limited use in research and direct training practice. Therefore, new concepts and models are necessary in order to explain the influence of body composition on the efficiency of motor performance. Apart from the necessary evaluation of variables of percentages of fatty and muscle tissues, it could be assumed that the application of two component (BMI) = (FFMI+FMI), (Fat Free Mass Index, Fat Mass Index) and/or (MFR) model (Muscle to Fat Ratio) would provide a better comprehension of these relations.

The aim of this paper is to analyse descriptive and causal factors of basketball development in Serbia, particularly following the country's independence (2006) to this day. The paper presents the development path of "the game under two elevated hoops", since its arrival to Belgrade in the 1920s, through the challenges and successes in various state communities, since the State of Slovenes, Croats and Serbs (1918-1929), the Kingdom of Yugoslavia (1929-1945), the Socialist Federal Republic of Yugoslavia (1945-1992), the Federal Republic of Yugoslavia (1992-2003), the State of Union of Serbia and Montenegro (2003-2006), to the Republic of Serbia. The paper shows the participation in the Yugoslav basketball, as well as the events that marked the period of full independence of the Republic of Serbia. The results of the national teams are shown, including the contribution of the national basketball organization .The analysis has included the condition of senior and age categories, coach and referee organizations. Serbian basketball has shown originality in creating Yugoslav basketball, with continuing to be successful also in the independent country, which gives credibility and justifies the marketing and promotional campaigns of the national basketball federation that Serbia is the country of basketball.

During the period of ten weeks, a study has been conducted on the effects of a complex training method on the maximal isometric muscle force, its peaking time, and the rate of force development in the semi-squat test. The participants of the study were twenty junior basketball players (average age 16.4+/-0.7; mean body height 186.2cm+/-9.2; mean body weight 75,4+/-7.5kg; mean body fat percentage 12,83%+/-1.15). The participants were divided into experimental (n=10) and control group (n=10). The experimental group, besides technical-tactical training sessions, had additional complex training, while the control group had technical-tactical training sessions only. At the final testing, the results of maximal isometric muscle force and the explosive power index, have significantly improved in the experimental group, while the control group did not make significant progress. There were no significant changes in the maximal isometric muscle force's peak time at the final testing. The study findings indicate that application of the complex training method has positive effects on the development of maximal isometric force, and the rate of force development.

The aim of this study was to identify several morphological characteristics and speed-strength abilities in basketball players aged 10 and 11, and to determine possible differences between them, connected with their age. The research was conducted on a sample of 84 young basketball players aged 10 (N=46) and 11 (N=38). The following motor variables were measured: shoulder explosiveness (throwing the ball from basketball position), leg explosiveness (vertical jump), speed strength of the trunk (sit up exercises in 10 seconds), stamina in speed strength of the trunk (sit up exercises in 30 seconds), the speed of changing the direction of moving (agility T-test), acceleration (running for 5 and 20 meters). The following morphological variables were also measured: body height, body mass, percentage of body fat and percentage of muscle tissue. Eleven-year-olds achieved better results than the ten-year-olds in all categories. Statistically significant differences (p

With the help of the 94Fifty technology we were able to analyze the three-point shot. We were curious to know whether the majority of the shots are recommended by the manufacturer of the measuring system and carried out in preplanned intervals of entry angles, the rotation of the ball, and the release time of the ball, and we wished to find out the consistency of the aforementioned parameters between the guards and other players. The hypotheses were tested on a sample of 52 great male basketball players, aged 18 and 19. We deducted that most of the shots from the distance of 6.75 m occur under a entry angle greater than 42°, but not in the estimated interval (between 42° and 48°); that most of the shots do not occur in the estimated interval of the rotation of the ball (from 130 to 150 revolutions/minute); and that most of the shots do not occur in the estimated interval of the release time (< 0.7 seconds). When it comes to the consistency of the before mentioned parameters we did not find any discrepancies between the guards and other players. Based on the results a question arises: did the manufacturer of the measuring system adequately form the intervals of the aforementioned parameters or does the problem lie in the performance of the shots by the chosen players?.

The aim of this survey was to examine the ability of acceleration and the agility of basketball players. The survey was conducted on a sample of 35 professional Bulgarian basketball players (average age 21.37 ± 2.91 years) who competed in the First Bulgarian Basketball League and were divided into two groups depending on the position of the game: inner players - N = 13 and outer players - N = 22. They were chosen by experts as the best national players in the league. Two tests were applied: 20 meter run (acceleration - T20m) and T-test (agility - TT). During the 20 - meter run test, the running times of five (T5m) and 10 meters (T10m) were measured. In addition, body height (BH) and body mass (BM) were measured. Inner players were significantly taller and heavier than the outer players, but no statistically significant differences were found between the two groups of players in the acceleration and agility variables, having in mind that on all the tests outer players achieved better results. High correlations were found between three acceleration variables (T5m, T10m and T20m) and one agility variable (TT) - correlation coefficients of .666 to .819 at the significance level of .01.The correlations between body height and acceleration variables are medium - correlation coefficients of .306 to .383, at the significance level of .05, while the correlation coefficients between body mass and these variables are slightly higher .350 to .415 at the significance level of .01, or .05.