Факултет физичког васпитања и спорта [Научни радови] / Faculty of Physical Education and Sport [Scientific papers]
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- СтавкаThe effects of experimental program on the explosive strength of lower limbs in male adolescents(2022) Radulović, Nikola; Vukadinović-Jurišić, Mila; Pavlović, Ratko; Obradović, Jelena; Mihajlović, IlonaBackground and Study Aim Various experimental programs for the development of motor skills are present in sports activities. Explosive strength can be defined as the ability to produce maximum force as soon as possible, and it represents an essential factor in activities where it is necessary to increase the acceleration of the body mass, the mass of specific body parts, or of an external object. The aim of study – to determine the effects of an experimental program on the explosive strength of lower limbs in male adolescents. Material and Methods One hundred and one male adolescent (aged 19 years ± 6 months; body height 181.43 ± 7.42 cm; body mass 80.08 ± 10.07 kg) were recruited and randomly divided into two groups: experimental group (E; N=48) and control group (K; N=48). The E group performed the experimental program which lasted fifteen weeks and consisted of three 60-min training sessions per week. All participants were tested on Squat Jump (SJ), Countermovement Jump (CMJ), Countermovement Jump with arms (CMJa) and Continuous Jump with Straight Legs (CJSL). The four tests were performed using a Kistler force platform to measure Quatro Jump Bosco Protocol Version 1.0.9.2 and gave us data about the jump height, number of jumps for 15s, average power jump and peak power jump. The multivariate analysis covariance (MANCOVA) and follow up analysis covariance (ANCOVA) were used to analyze the data. Results The results of MANCOVA showed statistically significant differences (p ≤ 0.001) between the E and K groups in all systems of variable lower limb explosive strength in male adolescents. In addition, results of ANCOVA showed statistically significant differences (p ≤ 0.001) in SJ, CMJ, CMJa and CJSL in favor of the E group compared to the K one. Conclusions The results of this research show that a fifteen-week experimental program can lead to significant improvements in lower limb explosive strength in male adolescents
- СтавкаTHE DETERMINATION OF THE CONCENTRATIONS OF METAMIZOL SODIUM IN INFLAMED JOINTS OF PIGS AFTER INTRAVENOUS AND IONTOPHORETIC APPLICATION(VETERINARY FACULTY, UNIVERSITY IN BELGRADE, 2010) ĐURĐEVIĆ, S.; JEZDIMIROVIĆ, MILANKA; ALEKSIĆ, NEVENKA; BRANKOVIĆ, NATAŠA; PRŽULJ, D.; CICOVIĆ. B.Concentrations of the NSAID metamizol sodium (MmNa) in the synovial fluid and hyaline cartilage of inflamed knee and elbow joints of pigs after i.v. application and iontophoresis (IPh) were investigated. The research was conducted on 14 male pigs divided equally into two experimental groups and exposed to artificial inflammation of knees and elbows prior to the application of MmNa. The first group (A) was administered 2.5 g (twice the maximum therapeutic dose) MmNa intravenously, whilst the second group (B) was exposed to the same dose, but applied by IPh into contralateral knee and elbow joints. Four hours after the application of MmNa biopsies of the affected knee and elbow joints were performed. The average concentration of MmNa in the synovial fluid of inflamed joints in group A was 9.81±1.96 g/g, while in group B was 170.66±2.07 g/g, being 17 times higher. The average concentration of MmNa in the hyaline cartilage was 2.29±1.16 g/g following i.v. administration and 98.36±21.58 g/g after IPh, i.e. approximatelly 43 times higher. This led to the conclusion that IPh of MmNa, resulting in incomparably higher concentrations in inflamed joints without any adverse systemic effects, has an advantage over i.v. application.
- СтавкаTHE MORPHOLOGICAL STATUS OF THE FINALIST IN JUMPING DISCIPLINES AT THE BEIJING OLYMPICS(University of Travnik, 2012) Pavlović, RatkoMorphological characteristics of the athlete represents his identification card on the base that can be classified as a constitutional type, and also to get information about his body height, body weight, BMI, and even analyze and age. Different constitutional types present in the sport and are important in terms of routing, selection and pursuit of a particular sport. This is expressed especially in athletic sports in the athletics where we have a number of different constitutional types of athletes that requires Discipline. This paper analyzes the morphological status of the finalists in the jumping events at the Olympic Games in Beijing 2008. The survey includes 32 athletes who competed in the finals and the measured variables to assess the morphological status: body height (AVIS), body mass (AMAS), body mass index (BMI), age of the competitor (GOD). Applying basic statistical parameters was performed descriptive analysis of variables applied to the athletes that were made based on the conclusions.
- СтавкаSPEED AND SPEED-STRENGTH ABILITIES OF THE REPRESENTATIVES FOR SLOVAKIA IN SHORT-DISTANCE RUNS IN THE PUPILS CATEGORY IN ATHLETICS(University of Travnik, 2013) Čillík, Ivan; Pupiš, Martin; Ďurják, Ondrej; Pavlović, Ratko; Bonacin, DobromirThis contribution deals with speed and speed-strength abilities of the pupils in short-distance runs in athletics. The main purpose of our contribution was to determine the performance and the correlations between the indicators of speed: accelerating speed, maximum running speed and the indicators of speedstrength: explosive power of lower limbs. We investigated speed abilities using the 50 m sprint with a standing start and speed-strength abilities by performing 10 repetitive squat jumps without the help of the upper limbs. The sample of subjects consisted of the pupils – competitors for Slovakia in the Youth category in athletics. Overall, physical demands of tested athletes were found to be average. Short-distance runners have better speed indicators than hurdle runners and long-distance runners; however, they achieve worse performance in speed-strength abilities. Contact time during the repetitive squat jumps is one of the decisive factors that significantly affect the level of speed and speed-strength abilities.
- СтавкаPHYSIOLOGICAL DIFERENCESS BETWEEN TOP ELITE AND ELITE WATERPOLO PLAYERS(University of Travnik, 2013) Idrizović, Kemal; Milošević, Drago; Pavlović, RatkoThe aims of this study were to establish the physiological attributes of top elite (the second position on the World Championship in Barcelona 2013) and elite (the fourth position in The Adriatic league in season 2012/13) male water polo players, and to determine whether these attributes discriminate top elite players from elite players. Measurements and tests of basic anthropometry (body hieght, body mass, BMI, arm span, leg length), and specific motor abilities, swimming speed, throwing velocity and maximal force capacity were conducted on two occasions, separated by one day. A total of 22 water polo players, 11 top elite and 11 elite (24.26±2.78 vs. 21.83±2.67 years of age) participated in this study. Of all applied tests and measures, they statistically significantly differed only in the results of two specific motoric tests: throwing velocity (78.81±3.84 vs. 71.27±4.29 km/h, p˂0.01) and test of maximal force capacity (46.72±6.13 vs. 40.38±3.79 kg, p˂0.01). This study revealed that the main differences between top elite and elite water polo players are in abilities of maximum shot velocity and the production of a maximum force. The results therefore identify important factors for elite players to improve in the transition phase from elite to top elite level.