Прегледај по Аутор "Radulović, Nikola"
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- СтавкаAnthropometric parameters of elite male runners sprint: are body height and body weight good predictors of results(H.S. Skovoroda Kharkiv National Pedagogical University, 2022) Pavlović, Ratko; Mihajlović, Ilona; Radulović, Nikola; Nikolić, SinišaPurpose. Athletic sprint runs are cyclical movements of maximum intensity. Speed, reaction time, agility and explosiveness are of special importance in sprinters. The main goal of the research is to determine the influence of Body height (BH) and Body weight (BW) with the best achieved results of in sprint disciplines (60m,100m,200m). Material and methods. In study included 40 competitors, top male sprinters (BH=180,45±6,88cm; BW=78,83±7,69kg). Their achieved best results in sprint disciplines were analyzed (60m, 100m, 200m). Pearson correlation coefficient was used to determine the relationship between body height and body weight and the results of sprint disciplines. Also a univariate model of regression analysis was applied and the relevant coefficients were calculated. The level of acceptance of statistical significance was set to p<0.05. Results. The simple regression analysis did not show a statistically significant influence of body height and body weight on the result of sprint running. Low correlations (BH vs. 100m = -0.306), (BW vs. 100m = -0.226) and (BH vs. 200m = -0.221) and insignificant correlations with an inverse relationship between results and anthropometric measures are mainly evident. Conclusion. Body height and body weight did not have a statistically significant effect on the results of the 60m sprint, while their influence is evident in the 100m, and especially in the 200m (but without statistical significance). This influence on the result of running 100 and 200m is a consequence of the exceptional motor-functional abilities of the sprinter to show greater force in the last phase of the rebound. Otherwise in the sprint, the rear rebound phase is much more important than the front rebound phase. A long step with the body weight (muscle) of the sprinter produces a higher rebound force, which with a big frequency of steps and good tecnique guarantees a good result.
- СтавкаDetection of female volleyball player body composition using bioelectric impedance analysis: cross-sectional study(H.S. Skovoroda Kharkiv National Pedagogical University, 2022) Pavlović, Ratko; Savić, Vladan; Radulović, Nikola; Skrypchenko, IrynaPurpose: In today's sport, and especially in high-performance sports where volleyball also belongs, continuous monitoring of Body Composition (BC) can significantly regulate the training process, which has a positive effect on the top form of athletes. Aim of the current study was to assess and analyze the body composition of a female volleyball players VC "Jahorina", by Bioelectric Impedance Analysis (BIA). Material and methods: In study the participants consist 18 female volleyball players, the members of the Volleyball Club ''Jahorina'' from Pale, East Sarajevo City (Body height = 173 ± 8.77 cm; Body weight = 66.04 ± 9.09kg; BMI = 22.03 ± 2.19 kg/m², decimal age 19.11 ± 2.63 years old) who competes in the Premier League of Bosnia and Herzegovina (B&H). Results: of the study showed that the body composition is within the healthy (allowed) values recommended for this population of volleyball players (Body Fat = 24.82%; Body Fat=11.44kg; Body Water = 53.68%; Body Muscle = 47.09 kg, BMR = 1538.08; DCI = 6435.38, etc.). Conclusion: Compared to the results of other authors, that Jahorina volleyball players do not lag far behind European clubs in terms of weaker BC (BF%, BFkg, BW%, BMkg, BMR, DCI, BMI, etc.). The only place where they are inferior is the body height of the volleyball player (height = 173 ± 8.77 cm), while the relative value of Body weight = 66.04 ± 9.09 kg is evident.
- СтавкаEVALUATION OF ANAEROBIC ABILITIES OF PHYSICAL EDUCATION AND SPORTS STUDENTS APPLYING THE RUNNING ANAEROBIC SPRINT TEST(University of Travnik, 2015) Pavlović, Ratko; Mihajlović, Ilona; Radulović, NikolaAnaerobic abilities participate in most activities that are characterized by high intensity and short duration of activity. This type of endurance is the dominant activity in submaximal and maximal intensity. Conditioned by the good functioning of the cardiovascular and respiratory systems, morphological status, metabolism, muscle structure, etc. The research has conducted with the aim of evaluating anaerobic abilities of students of the Faculty of Physical Education and Sport of East Sarajevo and Novi Sad applying Running Anaerobic Sprint Test (RAST). The sample included a total of 40 male students, including 20 students from Eastern Sarajevo (age 21±0,5 years, average weight 76,69 ± 6,61kg) and (20 students from Novi Sad (age 20±0,5 years, the average weight 76,75±9,49kg). The results showed almost identical values of anaerobic capacity of students who are expected for this population with little benefits students of East Sarajevo. The average strength of the lower extremities student East Sarajevo amounted to 594,79 W, compared to the students of the Novi Sad 574,12 W, which is a slight difference that is not statistically significant. A slightly higher average index of fatigue was recorded with students of Novi Sad from 8,45 suggesting a weaker state of anaerobic capacity in relation to the pattern of East Sarajevo, or lower tolerance to lactate.
- СтавкаInvestigation of maximal strength performance in terms of training time routine(Iermakov Sergii Sidorovich, 2024) İlbak, İsmail; Eken, Özgür; Stojanović, Stefan; Joksimović, Marko; Pavlović, Ratko; Radulović, NikolaBackground and Study Aim In recent years, there has been a growing interest in understanding the relationship between daily training time, circadian rhythms, and athletic performance. The connection between daily training time, circadian rhythms, and athletic performance continues to be a subject of research debate. Therefore, the aim of this research is to investigate whether maximal strength performance is affected by daily training time routines. Material and Methods This cross-sectional study involved a total of 36 male bodybuilding athletes, who were divided into three equal groups (n=12); Noon Group, Afternoon Group, and Evening Group. The distinguishing feature amongst the groups was that they had been training at different times of the day for the past 6 months, and within each group, athletes had been training at the same time of day (Noon Group 12:00-14:00; Afternoon Group 17:00-19:00; Evening Group 21:00-23:00). A one-repetition maximum squat test was administered to each group with there being a 72-hour interval between the tests. Results The findings from the research indicate that there is a relationship between athletes’ daily training time routines and maximal strength performance. Athletes perform at their best during the time that corresponds to their daily training routine. The analysis reveals a statistically significant advantage in 1-RM squat performance for athletes adhering to their daily training time routines at various times of the day (p <0.001). Notably, Group Noon, Group Afternoon, and Group Evening achieved their highest 1-RM squat performance when following their respective daily training time routines. Conclusions Results underscore the importance of aligning training schedules with athletes’ natural rhythms, enhancing performance optimization strategies. It is believed that effective planning for training time by coaches and conditioning experts, taking into account competition times, would be a valuable strategy.
- 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