Прегледај по Аутор "Joksimović, Marko"
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- СтавкаDifferences between vertical jumps in elite female volleyball players. Reasons for lack of differences(University School of Physical Education, Poland, 2024) Joksimović, Marko; D’angelo, Stefania; Eler, Nebahat; Karišik, Siniša; Zlojutro, Nemanja; Latino, Francesca; Tafuri, DomenicoIntroduction. Squat jumps (SJ) and countermovement jumps (CMJ) are commonly used as tests to assess power output of lower extremities. Aim of Study. The aim of this article was to analyze differences between two vertical jumps in order to assess explosive power in elite female volleyball players and identify mechanisms responsible for existence of those differences. Material and Methods. Participants of this study were 14 elite female volleyball players of the Montenegro U19 national team (age: 18.42 ± 1.34 years; height: 178.15 ± 4.9 cm; weight: 68.1 ± 5.83 kg; body mass index: 21.34 ± 1.10 kg/m2; body fat: 18.89 ± 3.70%). Jump height data for a SJ and a CMJ was obtained using OptoJump device (Optojump, Microgate, Bolzano, Italy). Results. The results showed that there is no statistically significant difference (F = 0.093, p < 0.124) between the heights of the SJ (26.64 ± 2.93 cm) and the CMJ (26.65 ± 2.85 cm). Conclusions. The findings suggest that elastic energy has very little effect on improving CMJ performance. On the other hand, CMJ training can reduce an ability to effectively create pre-tension and quickly build stimulation, because athletes are not forced to do so, as the CMJ reduces a degree of muscle relaxation and provides more time to create stimulation. Based on the data, the CMJ may be detrimental to high-intensity sports performance if performed over a longer time frame.
- СтавкаEffects of aerobic physical activity to cardio-respiratory fitness of the elderly population: systematic overview(IP Iermakov S.S., 2020) Aksović, Nikola; Bjelica, Bojan; Joksimović, Marko; Skrypchenko, Iryna; Filipović, Siniša; Milanović, Filip; Pavlović, Bojan; Ćorluka, Bojan; Pržulj, RadomirPurpose: Aerobic training is effective manner of exercising aimed at improving cardio-respiratory fitness of young people. However, its effects to the elderly population (over the age of 60), depending on characteristics of the participant (gender, health status, lifestyle, etc.), is still unclear. Aim of this research is systematic overview of the available literature dealing with the topic of effects of aerobic training to cardiorespiratory fitness of the elderly population over the age of 60, depending of gender (male/female), BMI (overweight/normal weight), lifestyle (active/sedentary), health status (diabetes/hypertension/ metabolic syndrome). Material: Total number of papers with published research results which met the criteria was 32. Walking is effective manner of exercising which influences improvement of maximum oxygen consumption (mean value: ±SD:12.91±7.40%). Introduction of activities with greater impact (bicycle and jogging) provides more effect to the cardio-respiratory fitness (mean value: ±SD:14.28±7.48%). Results: Aerobic training intensity level (moderate vs. high) makes no significant difference to the adaptive response of the cardio respiratory fitness in elderly population. Training in duration of 6 weeks may significantly influence increase in maximum oxygen consumption, but longer training duration, however, has better effect. Endurance training has similar effects to improvement of cardio-respiratory fitness in both men and women. On the other hand, it seems that active people have lower adaptive response in comparison to sedentary people (8.3% vs. 18.84%). Effect is similar between overweight and normal weight participants (18.48% vs. 8.6%). Positive influence of aerobic training was also observed in participants with hypertension, metabolic system and diabetes type 2. Conclusions: Results clearly suggest benefits of aerobic training on cardio-respiratory fitness of elderly population. The effect may, however, vary depending of duration, type of activity, as well as characteristics of the sample.
- СтавкаGender differences in hand grip strength of children in Bosnia and Herzegovina aged 11 to 14 years. A cross - sectional study(Romanian Association of Balneology, Editura Balneara , Romania, 2023) Pavlović, Ratko; Joksimović, Marko; Eken, Özgür; Radulovic, Nikola; Badau, DanaHand grip strength (HGS) serves as a multifaceted and critical parameter within the domain of motor function and is widely recognized as a pivotal aspect in the comprehensive evaluation of the development of school-aged children. The aim of the research was to determine the values of HGS, the trend of changes and differences between boys and girls aged 11-14 years from Bosnia and Herzegovina. A cross-sectional survey was conducted on a sample of 585 students. The subsample was divided into 307 boys (11y = 81; 12y = 87; 13y = 77; 14y = 62) and 278 girls (11y = 66; 12y = 83; 13 y =79; 14y = 50). Hand muscle strength was measured using the method of isometric dynamometry in laboratory conditions, with a standardized test - Hand grip (according to the American Society of Hand Therapists). The force achieved during the maximum hand grip (dynamometry) was measured with a digital hand dynamometer CAMRY-EH101, USA. Statistically significant differences between male and female respondents were confirmed (for age 12, T = -2.651, p<0.009; for age 13, T =-5.178; p<0.000; for age 14, T =-7.124; p<0.000). In both sexes, the dominance of the strength of the right (dominant) hand than left (non-dominant) hand is evident. The study confirmed a positive trend of strength development in both sexes, as well as gender differences in the HGS test between children aged 12 to 14 years.
- СтавкаINFLUENCE OF BODY COMPOSITION PARAMETERS ON ANAEROBIC STRENGTH OF LOWER EXTREMITIES IN FEMALE FOOTBALL PLAYERS(2020) Lilić, Ana; Joksimović, Marko; D’Angelo, Stefania; Karišik, Siniša; Hamad, Shamal; Gardašević, NovicaThe aim of this study was to investigate the influence of body composition on the anaerobic strength of the lower extremities, as well as the prediction of body composition on the results of anaerobic ability in professional football players. Materials and Method. The sample of respondents consists of female football players who compete in the highest rank of the competition, the Serbian Super League. The total number of respondents included in the study was 21 female football players (age 19.38 ± 3.69, body height 166.48 ± 6.17 cm, body weight 59.98 ± 7.09 kg). The study is of a transversal nature and testing was done in the pre-competition period. The sample of measuring instruments used in the research are body composition and assessment of anaerobic strength of the lower extremities. Assessment of body composition was performed indoors using a multifrequency bioelectric impedance (Inbody 770). Variables for estimating the anaerobic strength of the lower extremities were obtained using a bicycle ergometer (Monark 839E) in the Wingate Anaerobic Test. Results. The results of body composition show a statistically significant influence on the prediction of maximum anaerobic strength of the lower extremities in professional female football players (p < 0.05), as well as on the overall work in the anaerobic zone and the mean values of anaerobic strength. Regression analysis of the influence of body composition on the parameters of maximum strength in (W / kg) and fatigue rate does not show statistically significant results. Conclusion. There is a statistically significant influence of body composition, such as: body weight, lean body mass (%), muscle mass in absolute and relative values, on the values of maximum anaerobic strength, mean values of anaerobic strength and overall work in professional female footballers
- 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.