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Slobodan Andrašić
Faculty of Economics, University of Novi Sad, 24000 Subotica, Serbia

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Journal article
Published: 30 August 2021 in Children
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Knee pads have become increasingly popular among volleyball players. Given the fact high-intensity activities that are crucial to successfully playing this sport lead to an increased risk of a knee injury, the primary use of knee pads is to prevent potential injury. However, no research has been carried out to explain the effects of knee pads on the most important physical abilities in volleyball players, thus directly affecting performance. This study was undertaken to determine the effects of knee pads on the explosive power of the lower extremities, linear speed, and agility in young female volleyball players. In two separated sessions, 84 female volleyball players (age: 14.83 ± 0.72 years; height: 163.19 ± 8.38 cm; body mass: 53.64 ± 10.42 kg; VE: 5.30 ± 3.39 years) completed squat jumps (SJ), countermovement jumps (CMJ) with and without arm swing, linear sprints at 5-m and 10-m, modified t-test, and 5-10-5 shuttle test. Data analyses included descriptive statistics, paired sample T-tests and use of effect size (ES). There was no statistical difference between the two conditions for SJ (p = 0.156; ES = 0.18), CMJ (p = 0.817; ES = 0.03), CMJ with arm swing (p = 0.194; ES = 0.14), linear sprint at 5 m (p = 0.789; ES = 0.03) and 10 m (p = 0.907; ES = −0.01), modified t-test (p = 0.284; ES = 0.13), and 5-10-5 shuttle test (p = 0.144; ES = 0.19). Wearing knee pads has neither an inhibitory nor positive effects on explosive power of the lower extremities, linear speed, and agility in young female volleyball players.

ACS Style

Anja Lazić; Milovan Bratić; Stevan Stamenković; Slobodan Andrašić; Nenad Stojiljković; Nebojša Trajković. Knee Pads Do Not Affect Physical Performance in Young Female Volleyball Players. Children 2021, 8, 748 .

AMA Style

Anja Lazić, Milovan Bratić, Stevan Stamenković, Slobodan Andrašić, Nenad Stojiljković, Nebojša Trajković. Knee Pads Do Not Affect Physical Performance in Young Female Volleyball Players. Children. 2021; 8 (9):748.

Chicago/Turabian Style

Anja Lazić; Milovan Bratić; Stevan Stamenković; Slobodan Andrašić; Nenad Stojiljković; Nebojša Trajković. 2021. "Knee Pads Do Not Affect Physical Performance in Young Female Volleyball Players." Children 8, no. 9: 748.

Journal article
Published: 23 July 2021 in Children
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Regular physical activity and healthy diet have a significant positive impact on children’s health. Lack of physical activity increases the risk of various diseases, while obesity has become an alarming health problem worldwide. The aim of this study is to investigate the patterns of physical activity and diet among 11–14-year-old school children in Serbia. The sample included 623 primary school children, of whom 333 were boys (53.45%) and 290 were girls (46.55%). The children were also divided according to their age/grade: fifth grade/11 years (24.40% (n = 152; M = 84, F = 68)), sixth grade/12 years (25.68% (n = 160; M = 91, F = 69)), seventh grade/13 years (26.81% (n = 167; M = 83, F = 84)) and eighth grade/14 years (23.11% (n = 144; M = 75, F = 69)). Children’s lifestyle was assessed using two subscales of questionnaires based on the Health-Promoting Lifestyle Profile model II. The Mann–Whitney U test showed no statistically significant difference between boys and girls in the variables Nutrition (p = 0.81) and Physical Activity (p = 0.91). The Kruskal–Wallis test was applied and showed no statistically significant differences between children of different ages, regardless of gender, in the variable Nutrition (p = 0.63). However, differences were evident in the variable Physical Activity (p< 0.001), with the highest mean scores recorded in 12- and 13-year-old children and the lowest in 14-year-old children. Additionally, no statistically significant differences were found among boys as a function of age in the variables Nutrition (p = 0.55) and Physical Activity (p = 0.15), nor among girls in the variable Nutrition (p = 0.43), but in the variable Physical Activity (p = 0.01). In general, it can be concluded that the older primary school children have relatively satisfactory dietary and physical activity habits, but that these behaviors decrease with age, especially the level of physical activity. There is a need for better and more effective education of children about the benefits and importance of proper nutrition and regular physical activity.

ACS Style

Biljana Cvetković; Milan Cvetković; Tanja Petrušič; Višnja Đorđić; Saša Bubanj; Boris Popović; Slobodan Andrašić; Svetlana Buišić; Špela Bogataj. Nutrition and Physical Activity Behavior in 11–14-Year-Old Schoolchildren in Serbia. Children 2021, 8, 625 .

AMA Style

Biljana Cvetković, Milan Cvetković, Tanja Petrušič, Višnja Đorđić, Saša Bubanj, Boris Popović, Slobodan Andrašić, Svetlana Buišić, Špela Bogataj. Nutrition and Physical Activity Behavior in 11–14-Year-Old Schoolchildren in Serbia. Children. 2021; 8 (8):625.

Chicago/Turabian Style

Biljana Cvetković; Milan Cvetković; Tanja Petrušič; Višnja Đorđić; Saša Bubanj; Boris Popović; Slobodan Andrašić; Svetlana Buišić; Špela Bogataj. 2021. "Nutrition and Physical Activity Behavior in 11–14-Year-Old Schoolchildren in Serbia." Children 8, no. 8: 625.

Journal article
Published: 30 May 2021 in International Journal of Environmental Research and Public Health
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There are a plethora of studies investigating agility in soccer; however, studies have rarely presented the reaction time in differentiating age groups in adolescent soccer players. We investigated age differences in reactive agility, speed, and change of direction speed (CODs), in a group of highly trained adolescent soccer players. A total of 75 adolescent male soccer players (aged 14–19 years) were recruited. The players were grouped based on their age to under 15 (U15; n = 27), under 17 (U17; n = 25), and under 19 (U19; n = 23) players. Players were tested for 5 m, 10 m, and 20 m sprint, CODs speed test, Illinois test, and reactive agility test (total and reaction time). Only the reactive agility test with a live tester (RAT live) and RAT live reaction time (RAT live RT) distinguished U19 from both groups, U17 (RAT live, p< 0.01; RAT RT live, p< 0.01) and U15 (RAT live, p< 0.01; RAT RT live, p< 0.01). Groups did not have different times for 5 m sprint, RAT light and RAT RT light, F = 0.472, 2.691, 1.023, respectively, p > 0.05. Moreover, a significantly slower average performance of sprint 20, CODs left and right, and Illinois was also observed in U15 as compared to U17 and U19 (p< 0.05). We can conclude that results in agility tests that include live testers can be a significant factor that differentiates between adolescent soccer players considering their age.

ACS Style

Slobodan Andrašić; Marko Gušić; Mima Stanković; Draženka Mačak; Asim Bradić; Goran Sporiš; Nebojša Trajković. Speed, Change of Direction Speed and Reactive Agility in Adolescent Soccer Players: Age Related Differences. International Journal of Environmental Research and Public Health 2021, 18, 5883 .

AMA Style

Slobodan Andrašić, Marko Gušić, Mima Stanković, Draženka Mačak, Asim Bradić, Goran Sporiš, Nebojša Trajković. Speed, Change of Direction Speed and Reactive Agility in Adolescent Soccer Players: Age Related Differences. International Journal of Environmental Research and Public Health. 2021; 18 (11):5883.

Chicago/Turabian Style

Slobodan Andrašić; Marko Gušić; Mima Stanković; Draženka Mačak; Asim Bradić; Goran Sporiš; Nebojša Trajković. 2021. "Speed, Change of Direction Speed and Reactive Agility in Adolescent Soccer Players: Age Related Differences." International Journal of Environmental Research and Public Health 18, no. 11: 5883.

Journal article
Published: 07 May 2021 in International Journal of Environmental Research and Public Health
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There is a strong relationship between body composition and performance in male soccer players. This study aimed to display an optimal body height and weight, and body composition profile of male soccer players for four competitive age groups. This cross-sectional study included four groups: U-15 (n = 152), U-17 (n = 154), U-19 (n = 61), and seniors (n = 27). Body height and weight were measured under standard conditions, and the bioelectrical impedance analyzer (BIA) analyzed body composition. On average, soccer players in the U-15 group had significantly lower body height, weight, body mass index, skeletal muscle mass, fat-free mass, total body water and basal metabolic rate than U-17, U-19 and seniors, but a higher percentage of body fat than U-17 and U-19, p < 0.05. In addition, the results show significant non-linear increases in body height, weight and body composition as the age of soccer players increases, with the exception of the percentage of body fat mass, which tends to significantly decrease with age. The main findings of this study are that body fat mass remains stable and similar across all age groups, including in the senior squad.

ACS Style

Marijan Spehnjak; Marko Gušić; Slavko Molnar; Mario Baić; Slobodan Andrašić; Musa Selimi; Draženka Mačak; Dejan Madić; Suzana Žilič Fišer; Goran Sporiš; Nebojša Trajković. Body Composition in Elite Soccer Players from Youth to Senior Squad. International Journal of Environmental Research and Public Health 2021, 18, 4982 .

AMA Style

Marijan Spehnjak, Marko Gušić, Slavko Molnar, Mario Baić, Slobodan Andrašić, Musa Selimi, Draženka Mačak, Dejan Madić, Suzana Žilič Fišer, Goran Sporiš, Nebojša Trajković. Body Composition in Elite Soccer Players from Youth to Senior Squad. International Journal of Environmental Research and Public Health. 2021; 18 (9):4982.

Chicago/Turabian Style

Marijan Spehnjak; Marko Gušić; Slavko Molnar; Mario Baić; Slobodan Andrašić; Musa Selimi; Draženka Mačak; Dejan Madić; Suzana Žilič Fišer; Goran Sporiš; Nebojša Trajković. 2021. "Body Composition in Elite Soccer Players from Youth to Senior Squad." International Journal of Environmental Research and Public Health 18, no. 9: 4982.

Journal article
Published: 30 May 2020 in Applied Sciences
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This study aimed to examine the reliability, validity, and usefulness of the smartphone-based application, My Jump 2, against Optojump in recreationally active adults. Participants (18 women, 28.9 ± 5.6 years, and 26 men, 30.1 ± 10.6 years) completed squat jumps (SJ), counter-movement jumps (CMJ), and CMJ with arm swing (CMJAS) on Optojump and were simultaneously recorded using My Jump 2. To evaluate concurrent validity, jump height, calculated from flight time attained from each device, was compared for each jump type. Test-retest reliability was determined by replicating data analysis of My Jump 2 recordings on two occasions separated by two weeks. High test-retest reliability (Intraclass correlation coefficient (ICC) > 0.93) was observed for all measures in both male and female athletes. Very large correlations were observed between the My Jump 2 app and Optojump for SJ (r = 0.95, p = 0.001), CMJ (r = 0.98, p = 0.001), and CMJAS (r = 0.98, p = 0.001) in male athletes. Similar results were obtained for female recreational athletes for all jumps (r > 0.94, p = 0.001). The study results suggest that My Jump 2 is a valid, reliable, and useful tool for measuring vertical jump in recreationally active adults. Therefore, due to its simplicity and practicality, it can be used by practitioners, coaches, and recreationally-active adults to measure vertical jump performance with a simple test as SJ, CMJ, and CMJAS.

ACS Style

Špela Bogataj; Maja Pajek; Slobodan Andrašić; Nebojša Trajković. Concurrent Validity and Reliability of My Jump 2 App for Measuring Vertical Jump Height in Recreationally Active Adults. Applied Sciences 2020, 10, 3805 .

AMA Style

Špela Bogataj, Maja Pajek, Slobodan Andrašić, Nebojša Trajković. Concurrent Validity and Reliability of My Jump 2 App for Measuring Vertical Jump Height in Recreationally Active Adults. Applied Sciences. 2020; 10 (11):3805.

Chicago/Turabian Style

Špela Bogataj; Maja Pajek; Slobodan Andrašić; Nebojša Trajković. 2020. "Concurrent Validity and Reliability of My Jump 2 App for Measuring Vertical Jump Height in Recreationally Active Adults." Applied Sciences 10, no. 11: 3805.

Journal article
Published: 25 May 2020 in International Journal of Environmental Research and Public Health
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There is a persistent need in sport science for developing a measuring tool that is affordable, portable, and easy to use. We aimed to examine the concurrent validity and test–retest reliability of the My Jump 2 app compared to a validated OptoJump instrument for measuring jump performance during the squat jump (SJ), countermovement jump (CMJ), and CMJ free arms (CMJAM) in primary school children. A total of 48 participants (11–14 years age), volunteered to participate in this research. The jumps were recorded with a validated OptoJump photoelectric cell system and a concurrent device (iPhone X through My Jump 2 app) at the same time. The participants repeated the testing procedure after two weeks to assess the reliability of the measurements (ICC). Systematic bias between sessions and tools was evaluated using the paired samples t-test and Bland and Altman analysis. High test–retest reliability (ICC > 0.89) was observed for all measures’ in-between conditions. Very large correlations in the total sample were observed between the My Jump 2 app and OptoJump for SJ (r = 0.97, p = 0.001), CMJ (r = 0.97, p = 0.001), and CMJAM (r = 0.99, p = 0.001). Bland and Altman’s plot depicting limits of agreement for the total sample between the OptoJump and My Jump 2 show that the majority of data points are within the 95% CIs. The results of this study suggest that My Jump 2 is a valid, reliable, and useful tool for measuring jump performance in primary school children.

ACS Style

Špela Bogataj; Maja Pajek; Vedran Hadžić; Slobodan Andrašić; Johnny Padulo; Nebojša Trajković. Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children. International Journal of Environmental Research and Public Health 2020, 17, 3708 .

AMA Style

Špela Bogataj, Maja Pajek, Vedran Hadžić, Slobodan Andrašić, Johnny Padulo, Nebojša Trajković. Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children. International Journal of Environmental Research and Public Health. 2020; 17 (10):3708.

Chicago/Turabian Style

Špela Bogataj; Maja Pajek; Vedran Hadžić; Slobodan Andrašić; Johnny Padulo; Nebojša Trajković. 2020. "Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children." International Journal of Environmental Research and Public Health 17, no. 10: 3708.

Book chapter
Published: 01 January 2019 in 5th International Thematic Monograph: Modern Management Tools and Economy of Tourism Sector in Present Era
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ACS Style

Nada Milenković; Jelena Andrašić; Slobodan Andrašić. HOTEL SPECIFIC DETERMINANTS OF LIQUIDITY-EVIDENCE FROM THE HOTELS IN AP VOJVODINA. 5th International Thematic Monograph: Modern Management Tools and Economy of Tourism Sector in Present Era 2019, 123 -137.

AMA Style

Nada Milenković, Jelena Andrašić, Slobodan Andrašić. HOTEL SPECIFIC DETERMINANTS OF LIQUIDITY-EVIDENCE FROM THE HOTELS IN AP VOJVODINA. 5th International Thematic Monograph: Modern Management Tools and Economy of Tourism Sector in Present Era. 2019; ():123-137.

Chicago/Turabian Style

Nada Milenković; Jelena Andrašić; Slobodan Andrašić. 2019. "HOTEL SPECIFIC DETERMINANTS OF LIQUIDITY-EVIDENCE FROM THE HOTELS IN AP VOJVODINA." 5th International Thematic Monograph: Modern Management Tools and Economy of Tourism Sector in Present Era , no. : 123-137.

Journal article
Published: 28 November 2018 in Facta Universitatis, Series: Physical Education and Sport
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The aim of this research was to determine and identify the number of completed successful attacks of the four first-placed teams (France, Brazil, Croatia and Netherlands) at the 1998 16th FIFA World Cup in France and the four first-placed teams (Italy, France, Germany and Portugal) at the 2006 18th FIFA World Cup in Germany, for each team individually. In this research, the samples taken from the population at large can be defined as active, professional, elite players in the regular, biggest, and strongest system of competition - the FIFA World Cup. For the realization of this study, measures of descriptive (frequency distribution) and comparative (X² - test and multiple classification test) statistics were used. The results obtained at both World Championships were analyzed by all the criterion variables and provided the ability to define specific actions that can be recommended for a statistical and systematic monitoring of successful attacks. Based on these results, it is possible to identify the importance of successful attacks (inaccurate, accurate and efficient) in order to achieve maximum competitive success and determine the best ways to set up a methodology of training activities.

ACS Style

Bane Novitović; Vladan Marković; Slobodan Andrašić; Slavko Molnar; Marko Gušić. A COMPARATIVE ANALYSIS OF THE SUCCESSFUL ATTACKS OF THE FOUR FIRST-PLACED NATIONAL TEAMS AT THE 16TH AND 18TH FIFA WORLD CUP. Facta Universitatis, Series: Physical Education and Sport 2018, 503 -514.

AMA Style

Bane Novitović, Vladan Marković, Slobodan Andrašić, Slavko Molnar, Marko Gušić. A COMPARATIVE ANALYSIS OF THE SUCCESSFUL ATTACKS OF THE FOUR FIRST-PLACED NATIONAL TEAMS AT THE 16TH AND 18TH FIFA WORLD CUP. Facta Universitatis, Series: Physical Education and Sport. 2018; ():503-514.

Chicago/Turabian Style

Bane Novitović; Vladan Marković; Slobodan Andrašić; Slavko Molnar; Marko Gušić. 2018. "A COMPARATIVE ANALYSIS OF THE SUCCESSFUL ATTACKS OF THE FOUR FIRST-PLACED NATIONAL TEAMS AT THE 16TH AND 18TH FIFA WORLD CUP." Facta Universitatis, Series: Physical Education and Sport , no. : 503-514.

Journal article
Published: 01 September 2018 in International Journal of Morphology
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The aim of this study was to examine seasonal variations in body composition in adolescent soccer players. A total of 64 young male soccer players (aged 14-18 years) were recruited for this research. Body composition was assessed using the Bioelectric impedance analysis. The variables were body mass, body fat, muscle mass, fat free mass, total body water, BMI, body fat %, basic metabolic rate. Body mass did not change across the three measurement occasions. Body fat mass and body fat % significantly changed between test intervals (p≤0.05). There were no significant differences in other variables between measurements performed during the season. In conclusion, body fat has changed significantly from the start of the season to the end of the competitive period in adolescent soccer players, in accordance with earlier studies.

ACS Style

Dejan M Madic; Slobodan Andrasic; Marko Gusic; Slavko Molnar; Danilo Radanovic; Nebojsa Trajkovic. Seasonal Body Composition Variations in Adolescent Soccer Players. International Journal of Morphology 2018, 36, 877 -880.

AMA Style

Dejan M Madic, Slobodan Andrasic, Marko Gusic, Slavko Molnar, Danilo Radanovic, Nebojsa Trajkovic. Seasonal Body Composition Variations in Adolescent Soccer Players. International Journal of Morphology. 2018; 36 (3):877-880.

Chicago/Turabian Style

Dejan M Madic; Slobodan Andrasic; Marko Gusic; Slavko Molnar; Danilo Radanovic; Nebojsa Trajkovic. 2018. "Seasonal Body Composition Variations in Adolescent Soccer Players." International Journal of Morphology 36, no. 3: 877-880.

Journal article
Published: 03 January 2017 in Спортске науке и здравље - АПЕИРОН
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In order to determine the difference in metabolic-energy potential in U16 football players (cadet age) at different levels of competition, a survey was conducted on a sample of sixty players aged 14 to 16. The sample of respondents is divided into the following subsamples: players of Serbian national football team (n=20), players from high-quality league of Vojvodina (n=21) and the players from the regional competition levels (n=19). The lactate blood level was determined by testing capillary blood from the finger during three stages of Cooper test: the concentration of lactate in the standstill stage was measured before the start of the test – before the load; the concentration of lactate during the load stage was measured one minute after completion of the test; and the concentration of lactate in the recovery stage was measured in the tenth minute of recovery. The survey results indicate a statistically significant difference between the said groups of players in relation to the analyzed metabolic-energy parameters of the players.

ACS Style

Slobodan Andrašić; Milan Cvetković; Zoran Milić. Differences in Metabolic-Energy Potential in U16 Football Players (Cadet Age) in Relation to Competition Level // Razlike u metaboli?ko-energetskim potencijalima fudbalera kadetskog uzrasta u odnosu na takmi?arski nivo. Спортске науке и здравље - АПЕИРОН 2017, 12, 1 .

AMA Style

Slobodan Andrašić, Milan Cvetković, Zoran Milić. Differences in Metabolic-Energy Potential in U16 Football Players (Cadet Age) in Relation to Competition Level // Razlike u metaboli?ko-energetskim potencijalima fudbalera kadetskog uzrasta u odnosu na takmi?arski nivo. Спортске науке и здравље - АПЕИРОН. 2017; 12 (2):1.

Chicago/Turabian Style

Slobodan Andrašić; Milan Cvetković; Zoran Milić. 2017. "Differences in Metabolic-Energy Potential in U16 Football Players (Cadet Age) in Relation to Competition Level // Razlike u metaboli?ko-energetskim potencijalima fudbalera kadetskog uzrasta u odnosu na takmi?arski nivo." Спортске науке и здравље - АПЕИРОН 12, no. 2: 1.