The aim of this research was to determine the diff erences among the top football players of the two clubs in Bosnia and Herzegovina, HSC Zrinjski Mostar and FC Siroki Brijeg in the morphological characteristics and body composition. A sample of 50 subjects was divided into two sub-samples. The fi rst sub-sample of the subjects consisted of 28 players of HSC Zrinjski Mostar of the average age 24.36±4.14, the champions of the Bosnia and Herzegovina in the season 2016/17, while the other sub-sample consisted of 22 players of FC Siroki Brijeg of the average age of 24.00±6.22, the champions of the Cup of Bosnia and Herzegovina in the season 2016/17. Football players were tested immediately after the end of the competition season 2016/17. Morphological characteristics in the body composition were evaluated by a battery of 11 variables: body height, body weight, body mass index, fat percentage, muscle mass, bone mass, waist size, triceps skinfold, biceps skinfold, back skinfold and abdominal skinfold. The standard central and dispersion parameters of all variables were calculated. The signifi cance of the diff erences between the players of the top two football clubs in the morphological characteristics and variables for assessing body composition was determined by a t-test for independent samples. It was found that the football players of the two mentioned clubs have statistically signifi cant diff erences by the three variables that estimate the bone mass, waist circumference and triceps skinfold, in favor of FC Siroki Brijeg.

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characteristics in the body composition were evaluated by a battery of 11 variables: body height, body weight, body mass index, fat percentage, muscle mass, bone mass, waist size, triceps skin set, biceps skin set, back skin set and abdominal skin set. The standard central and dispersive parameters of all variables were calculated. The significance of the differences between the players of the top two handboll clubs in the morphological characteristics and variables for assessing body composition was determined by a ttest for independent samples. It has been found that the handdballeas of two mentioned clubs had statistically in two varijables that are evaiuated by the triceps skin set end biceps skin set in favor of the women´s WHC Levalea.

The purpose of this research was to examine Montenegrin adolescents' body height from the northern region. Also, the research examines an arm span as an alternative assessment for measuring the body height which varies from region to region in Montenegro. The research surveyed 345 adolescents (164 males and 181 females) from the northern region of Montenegro. Anthropometric measurements were performed according to the protocol of the International Society for the Advancement of Kinanthropometry (ISAK). The fi nal outcome of the research are mean values and standard deviations related to anthropometric measurements. The relationship between the body height and the arm span was determined by using simple correlation coeffi cients and their 95% confi dence interval. This was followed by a linear regression analysis which was utilized to determine to what extent the arm span can reliably predict the body height. The results show that adolescents from the north part of Montenegro are high; men have an average body height of 182.89 ± 6.39 centimeters and the arm span of 182.95 ± 7.04 centimeters, while the average height of the female population is 169.47 ± 6.08 centimeters with a arm span of 168.02 ± 7.40 centimeters. Compared to other studies, the results of this research have shown that this population is taller than most nations throughout Europe. Moreover, as it was expected, the arm span can predict reliably the body height when it comes to this population. Key words: Body Height, Arm Span, Anthropometry, Adolescents, MontenegroUvod U naučnoj literaturi dobro je poznato da je mjerenje tjelesne visine značajno u mnogim situacijama (Arifi i sar., 2017; Gardašević, Rasidagić, Krivokapić, Ćorluka i Bjelica, 2017; Bjelica, Popović, Kezunović, Petković, Jurak i Grasgruber, 2012; Popović, Bjelica, Tanase i Milasinović, 2015;Popovic, 2017): to je relativna mjera veličine tijela i daje procjenu nutritivnog statusa, te značajnu mjeru utvrđivanja osnovnih energetskih zahtjeva, standardizaciju mjera fi zičke sposobnosti, procjene rasta djeteta, predviđanja i standardizacije fi zioloških varijabli i identifi kacije talenata itd.

Level of active lifestyle and exercise approach among students of the University of Novi Pazar during the COVID-19 pandemicNivel de modo de vida activo y estrategia de ejercicio entre los

The goal of this research was to determine the differences in the morphological characteristics and body composition among the top football players of the two clubs, Bosnia and Herzegovinian football club Zrinjski Mostar and Kosovian football club Besa Peje. A sample of 46 subjects was divided into two sub-samples. The first sub-sample of the subjects consisted of 28 players of CSC Zrinjski Mostar of the average age 24.36±4.14, the champion of the Bosnia and Herzegovina in the season 2016/17, while the other sub-sample consisted of 18 players of FC Besa Peje of the average age of 21.83±3.17, the winner of Kosovo Cup in the season 2016/17. Football players were tested immediately after the end of the competition season 2016/17. Morphological characteristics in the body composition were evaluated by a battery of 11 variables: body height, body weight, waist circumference, triceps skinfold, biceps skinfold, back skinfold, abdominal skinfold, body mass index, fat percentage and muscle mass. The differences between the players of the top two football clubs in the morphological characteristics and variables for assessing body composition was determined by a t-test for independent samples. It was found that the football players of CSC Zrinjski and FC Besa Peje have statistically significant differences by the three variables that estimate the body weight, waist circumference and muscle mass.

The aim of this study is to determine the elastic (refl ective) properties of the tennis ball depending on the air pressure in it. The standard tennis ball was released on a fl at, solid surface from a height of nine meters, three times. For a tennis ball pressure was measured based on the time and rebound of the ball after the fi rst, second and third falls. In the fi rst release the air in the ball was under prescribed pressure. After the fi rst release, the pressure in the ball is reduced by the fact that the ball once is stabbed with a hollow medical needle, after the second release, the pressure in the ball is reduced further by the ball being pierced twice with a hollow medical needle. The setting of the experiment was done by fi lming the free fall of the prescribed tennis balls and a series of rebounds after being rejected from a solid surface. It can be concluded that the distance traveled and the total duration of four successive refl ections largely depended on the internal pressure. In this study, the initial tennis ball velocity was unchanged and only internal pressures were changed. It was determined how much the rejection rate was reduced and the duration of the re-acceleration, depending on the reduction of the internal pressure. All in all, it can be concluded that the initial speed of the ball can be increased by increasing the internal pressure in the ball.

The purpose of this research was to examine Montenegrin adolescents' body height from the municipalities of Berane and Pljevlja, Montenegro. Also, the research examines an arm span as an alternative assessment for measuring the body height which varies from region to region in Montenegro. The research surveyed 275 adolescents (130 males and 145 females) from the previously mentioned towns in Montenegro. Anthropometric measurements were performed according to the protocol of the International Society for the Advancement of Kinanthropometry (ISAK). The fi nal outcome of the research are mean values and standard deviations related to anthropometric measurements. The relationship between the body height and the arm span was determined by using simple correlation coeffi cients and their 95% confi dence interval. This was followed by a linear regression analysis which was utilized to determine to what extent the arm span can reliably predict the body height. The results show that adolescents from the north part of Montenegro are high, men have an average body height of 182.67±6.08 centimeters and the arm span of 183.02±6.71 centimeters, while the average height of the female population is 169.46±5.96 centimeters with a arm span of 168.56±7.30 centimeters. Compared to other studies, the results of this research have shown that this population is taller than most nations throughout Europe. Moreover, as it was expected, the arm span can predict reliably the body height when it comes to this population. UvodPostoji veliki broj studija koji potvrđuje da je procjena tjelesne visine značajan faktor koji može uticati na procjenu statusa uhranjenosti kod odraslih ljudi (Arifi , tačna tjelesna visina se ne može uvijek identifi kovati i riješiti na uobičajeni način (npr. paraliza, frakture, amputacija, skolioza i bol). Zbog ovih faktora procjena tjelesne visine se može dobiti na osnovu drugih pouzdanih antropometrijskih pokazatelja kao što su: dužina ruku i stopala, dužina potkoljenice, visina koljena, dužina podlaktice, dužina grudne kosti, sjedeća visina, dužina lopatice, raspon ruku, itd. (Gardasevic, Rasidagic,