Journal articles: 'Football properties'

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Turna, Bülent, and Fatih Kılınç. "Comparison of Some Biomotoric Properties and Anthropometric Measurements of Male Basketball and Football Players." Journal of Education and Training Studies 6, no. 5 (April 9, 2018): 118. http://dx.doi.org/10.11114/jets.v6i5.2140.

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The purpose of this study is to determine and compare some biomotoric properties and anthropometric measurements of Antalya Muratpaşa High School Boys’ Basketball Team and Football Team. Thirty volunteering players from Antalya Muratpaşa High School Boys’ Basketball and Football Teams participated in the study. Fifteen of the participants were from the Basketball Team and 15 were from Football Team. The mean age of the Football Team was 16,3 ±0,9 years; mean body weight was 65,6 ±9,4 kg, mean height was 170,3 ±6,7 cm; and the mean age of the Basketball Team was 15,5 ±0,74 years, mean body weight was 64,8 ±11,7 kg, mean height was 178,6 ±6,1 cm. As well as the height, weight, age values of the 15 Basketballer and 15 Footballer Boys’, the right and left grip force, back force, sprint tests, leg force, free vertical jump, subcutaneous fat measurements from 8 different points, and circumference measurements from 7 different points were taken. As a result of the comparison between some biomotoric properties, a significant difference was found between the vertical jump test values of the Basketball Team and Football Team (p<0, 05). When the Basketball and Football teams participating in the study were compared, it was determined that there was a statistically significant difference between the calf area sub-cutaneous fat measurement values (p<0, 05). No statistically significant differences were found in the measurements of shoulder, chest inspiration, chest expiration, arm, forearm, thigh circumference, calf circumference, hip circumferences of the Boys’ Basketball and Football players who participated in our study (p<0,05). A statistically significant difference was found in the 10-m speed run tests of the Boys’ Basketball Team and Football Team Players (p<0,05). The data of the study were analyzed in Independent Samples T Test (p<0,05) according to statistical significance levels. Nobody should doubt that positive science is affecting all sports disciplines in the light of technological developments in our present age and it will continue even more in the future with more efficient and faster use to serve sports and sportsmen. In this context, it was aimed in the present study to determine how young sportsmen are suitable for their branches, and also to determine the missing and full aspects of their present biomotoric and physical statuses, supplement the missing aspects, and improve the full ones.

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Carré, M. J., S. R. Goodwill, and S. J. Haake. "Understanding the Effect of Seams on the Aerodynamics of an Association Football." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 219, no. 7 (July 1, 2005): 657–66. http://dx.doi.org/10.1243/095440605x31463.

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The aerodynamic properties of an association football were measured using a wind tunnel arrangement. A third scale model of a generic football (with seams) was used in addition to a ‘mini-football’. As the wind speed was increased, the drag coefficient decreased from 0.5 to 0.2, suggesting a transition from laminar to turbulent behaviour in the boundary layer. For spinning footballs, the Magnus effect was observed and it was found that reverse Magnus effects were possible at low Reynolds numbers. Measurements on spinning smooth spheres found that laminar behaviour led to a high drag coefficient for a large range of Reynolds numbers, and Magnus effects were inconsistent, but generally showed reverse Magnus behaviour at high Reynolds number and spin parameter. Trajectory simulations of free kicks demonstrated that a football that is struck in the centre will follow a near straight trajectory, dipping slightly before reaching the goal, whereas a football that is struck off centre will bend before reaching the goal, but will have a significantly longer flight time. The curving kick simulation was repeated for a smooth ball, which resulted in a longer flight time, due to increased drag, and the ball curving in the opposite direction, due to reverse Magnus effects. The presence of seams was found to encourage turbulent behaviour, resulting in reduced drag and more predictable Magnus behaviour for a conventional football, compared with a smooth ball.

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Roberts, Jonathan, Paul Osei-Owusu, Andy Harland, Alun Owen, and Aimée Smith. "Elite Football Players’ Perceptions of Football Turf and Natural Grass Surface Properties." Procedia Engineering 72 (2014): 907–12. http://dx.doi.org/10.1016/j.proeng.2014.06.150.

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Faria, Aurélio, Ronaldo Gabriel, João Abrantes, Paola Wood, and Helena Moreira. "Mechanical properties of the triceps surae: Differences between football and non-football players." Journal of Sports Sciences 31, no. 14 (October 2013): 1559–67. http://dx.doi.org/10.1080/02640414.2013.789919.

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Li, Ming-Xia, Qiao-Li Xiao, Yue Wang, and Wei-Xing Zhou. "Statistical properties of the mutual transfer network among global football clubs." International Journal of Modern Physics B 32, no. 29 (November 20, 2018): 1850320. http://dx.doi.org/10.1142/s0217979218503204.

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Football is the most popular sport in the world, and one of the most interesting events is the transferring of football players among various clubs. Based on 470,792 transfer records among 23,605 football clubs in 206 countries and regions, we construct a mutual transfer network and investigate its basic topological characteristics related to node degree k, edge weight w and node strength s. We find that the distributions can be well fitted by bimodal distributions for k and s or a power-law tail distribution for w. By studying the features of neighbor nodes or edges, we find that the mutual transfer network exhibits assortative mixing for most nodes or clubs but disassortative for clubs with very large degrees. We also observe nonlinear correlations among the different types of measures. Our work sheds new lights into the investigation of the characteristics of football transfer activities.

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Cantu, R. C. "Biomechanical Properties of Concussions in High School Football." Yearbook of Sports Medicine 2011 (January 2011): 37–38. http://dx.doi.org/10.1016/j.yspm.2011.01.020.

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Lizogub, Vladimir, Leonid Nechiporenko, Vitaliy Pustovalov, Victor Spaniak, and Roman Khalyavka. "NEURODYNAMIC PROPERTIES IN FOOTBALL PLAYERS OF DIFFERENT GAMES." Sports Bulletin of the Dnieper 1, no. 4 (August 30, 2019): 58–63. http://dx.doi.org/10.32540/2071-1476-2019-4-058.

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BROGLIO, STEVEN P., BROCK SCHNEBEL, JACOB J. SOSNOFF, SUNGHOON SHIN, XINGDONG FENG, XUMING HE, and JERRAD ZIMMERMAN. "Biomechanical Properties of Concussions in High School Football." Medicine & Science in Sports & Exercise 42, no. 11 (November 2010): 2064–71. http://dx.doi.org/10.1249/mss.0b013e3181dd9156.

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Sánchez-Sánchez, Javier, Pascal Haxaire, Jorge García Unanue, José L. Felipe, Ana M. Gallardo, and Leonor Gallardo. "Determination of mechanical properties of artificial turf football pitches according to structural components." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 232, no. 2 (July 17, 2017): 131–39. http://dx.doi.org/10.1177/1754337117717803.

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Structural components of artificial turf football pitches have been improved in the last decade. The aim of this study was to explore the influence of structural components on the in situ mechanical behaviour of third-generation artificial turf football pitches. In total, 21 pitches were analysed according to the specified FIFA procedures. The results revealed that each of the pitches complies with the requirements of FIFA regulations. Pile length sample, stabilising bulk density, tuft/m2 and sub-base material all demonstrated a significant influence on the mechanical properties of the surface ( p < 0.05). Finally, the selected structural parameters explained 77.9%, 59.8% and 54.3% of variance in rotational traction, vertical deformation and force reduction, respectively. These results show the importance of the selection of the structural components in the design of artificial turf football pitches.

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Lyzohub, V. S., V. V. Shpaniuk, V. O. Pustovalov, T. V. Kozhemiako, and О. О. Bezkopylny. "Reserve Capabilities of the Cardiorespiratory System in Football Players with Different Individual-Typological Properties of the Nervous System." CHERKASY UNIVERSITY BULLETIN: BIOLOGICAL SCIENCES SERIES 1 (2022): 34–43. http://dx.doi.org/10.31651/2076-5835-2018-1-2022-1-34-43.

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ntroduction. The factors that are decisive in achieving high sports results in football and have a significant impact on the game activities of players, are technical, tactical, moral and volitional characteristics and physical performance of players. In our opinion, the individual typological properties of the central nervous system and the functional state of the cardiorespiratory system can have a significant impact on the outcome of the game and the game activity of football players. We suggest that there may be a functional relationship between individual typological traits that are highly genetically determined features of the central nervous system and the reserve capacity of the cardiorespiratory system.Purpose. To find out the reserve capabilities of the cardiorespiratory system of football players with different individual-typological properties of the nervous system.Methods. The individual-typological properties of the CNS and the functional characteristics of the cardiorespiratory system were studied in the elite football players. Results. In the course of our research, the indicators of the properties of the main nervous processes, namely, functional mobility (FMNP), strength (SNP) and balance (BNP) of nervous processes, were determined. The reserve capabilities of cardiorespiratory functions of sportsmen were established according to the following indicators: respiratory coefficient (RC), heart rate (HR, beats ·min-1), systolic (CO, ml) and minute blood volume (Q, l. min-1), indicators of minute tidal volume (VE, l. min.-1), oxygen consumption (VO2, ml · min.-1, ml · min.-1· kg. -1), carbon dioxide emissions (VCO2, ml · min.-1, ml · min.-1· kg.-1) and blood lactate (HLa). Correlation links have been established between individual-typological properties on the example of FMNP and functions of the cardiorespiratory system (r = 0.37-0.51). Originality.It was found that the balance of nervous processes (BNP) was characterized by the greatest reserve capabilities among individual-typological properties. Among cardiorespiratory functions, the greatest reserve capabilities were found for indicators - Hla, VE and VO2. The results of correlation analysis indicate that the cardiorespiratory functions of highly qualified football players depend on the individual-typological properties of the nervous system.Conclusion.We have determined reserve capabilities among individual-typological and cardiorespiratory properties. The greatest reserve capabilities are the balance of nervous processes and indicators of lactate in the blood, the minute volume of respiration and oxygen consumption. 42 Серія «Біологічні науки», 202 2During physical activity in groups of elite football players with a high level of development of typological properties of the nervous system, the characteristics of cardiorespiratory functions are much more pronounced. There are relationships between individual-typological property - FMNP and indicators of cardiorespiratory functions - НLa, VE and VO2 (r = 0.37-0.51).Thus, the functional mobility of nervous processes determines the reserve capabilities of the cardiorespiratory system, which in turn limits the physical performance of football players.Key words: individual-typological properties of the CNS; cardiorespiratory functions; reserve capabilities of functional systems.

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Wisam, Al S., and Larisa A. Parfenova. "Practical Recommendations for Improving the Professional Performance of a Children’s Football Coach." Volga Region Pedagogical Search 4, no. 38 (2021): 68–74. http://dx.doi.org/10.33065/2307-1052-2021-4-38-68-74.

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The material for the study was the current situation in football in the Syrian Arab Republic. As established earlier, despite the popularity of this sport, the level of the football coaching staff in the republic remains low. The objective of the article is to develop practical recommendations for improving the professional activity of a children’s football coach. The article describes the principles of working with young footballers, gives recommendations to a football coach, including how to increase the motivation for training young footballers. The article provides recommendations for trainers taking into account the difference in the properties of their nervous system to improve their skills.

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Zhou, Wei. "Preparation and Properties of HGBTPU Composite Foam for Football Protection." Advances in Materials Science and Engineering 2022 (August 17, 2022): 1–10. http://dx.doi.org/10.1155/2022/1632155.

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Football is a very dangerous sport. In order to reduce the injury of athletes, we must have corresponding protective articles, and the materials used are very important. Foam material has attracted the attention of all circles for its light weight, high strength, strong absorption impact load, and good heat insulation performance. However, the mechanical properties of foam materials will decrease with the decrease of density, which limits their application in sports, especially in some sports occasions, such as motorcycle competition, football, and other sports protection. In this paper, HGB/TPU foam materials are mainly studied. The material not only has good shock absorption performance but also has light weight and good mechanical properties. It can be used as protective equipment for football. In this paper, HGB/TPU composite foam materials were prepared by extrusion foaming method using TPU and HGB as raw materials. The effects of HGB surface modification, foaming agent content, and HGB content on the cellular structure and mechanical properties of composite foams were also investigated. The experimental results show that when the foaming method is extrusion foaming, the content of HGB is 3% and the content of foaming agent is 1.5%. It has better resistance to external forces, which helps to protect athletes from serious injuries.

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Polevoy, Georgy. "Unison of movements in football players with different nervous systems." Revista da Associação Médica Brasileira 65, no. 2 (February 2019): 211–15. http://dx.doi.org/10.1590/1806-9282.65.2.211.

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SUMMARY In this study, we investigated the effect of typological features of nervous system properties on the ability to unite the movements of young football players. A total of 36 young football players aged 11-12 years participated in this experiment. Of them, 18 were engaged in an experimental differentiated method, which is based on using the same exercise and methods for developing the ability to unite movements but with different load components; for players with a strong nervous system (9 children), the load was intensive, but for players with a weak nervous system (9 children) - the load was volumetric. The other 18 athletes made up the control group. After 8 months of the experiment, we observed positive changes in terms of the ability to unite movements in young football players. In the control group, these changes were not significant (P>0.05). In the experimental group studied according to a special method, the indicators changed considerably. The performance of football players with a strong nervous system improved from 6.4±0.2 s to 5.7±0.1 s (P<0.05), and for football players with a weak nervous system from 6.2±0.2 s to 5.6±0.2 s (P<0.05). The study proved the effectiveness of the use of the typological properties of the nervous system as a differentiated method for developing the ability to unite movements in young football players. This approach allows for the improvement of the quality of technical training of young athletes.

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Wannop, John W., Geng Luo, and Darren Stefanyshyn. "Traction properties of footwear in Canadian high school football." Footwear Science 1, sup1 (June 2009): 105–7. http://dx.doi.org/10.1080/19424280903063523.

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Bond, Alexander John, Paul Widdop, and Daniel Parnell. "Topological network properties of the European football loan system." European Sport Management Quarterly 20, no. 5 (October 8, 2019): 655–78. http://dx.doi.org/10.1080/16184742.2019.1673460.

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Papadimitriou, Dimitra, Kyriaki Kaplanidou, Kostas Alexandris, and Nikos Theodorakis. "The brand personality of professional football teams." Sport, Business and Management: An International Journal 9, no. 5 (November 11, 2019): 443–59. http://dx.doi.org/10.1108/sbm-03-2018-0021.

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Purpose The purpose of this paper is to test the psychometric properties of the Team Brand Personality Scale by Blank et al. (2013, 2018) in the context of the professional football clubs in Greece, based on the perceptions of fans for their own team and the rival team. The brand personality team scores of the fans are also used to create a league map presenting the brand personality of the different teams of the Greek football Super League. Design/methodology/approach Following a quantitative research design, 724 Greek football fans completed an electronic questionnaire assessing demographics, brand personality, team identification, sport involvement, attitudinal loyalty and game attractiveness. Findings The results partially confirmed the psychometric properties of the brand personality scale and suggested that the notion of brand personality influences positively the attitudinal loyalty and game attractiveness of the fans. Based on the results, the personality structure for the football league was also created and discussed. Research limitations/implications This study was set to focus only on the brand personality perceptions of the highly identified fans of football teams, known in the literature as realized brand personality. However, a thorough understanding of the particular concept requires also the perspective of sport marketers who may perceive the brand personality in a different manner (i.e. intended brand personality), so as to build a holistic picture of brand personality of football teams. Practical implications This research confirms that football teams have already projected a unique personality among their highly identified fans which can be used by marketing practitioners while designing integrated communication strategies. Originality/value This paper contributes to the broad brand personality literature by replicating Blank’s et al.’s sport team personality scale to the Greek context and the league level, involving both supporting fans and rivals.

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Pajović, Lazar, Lazar Toskić, Veroljub Stanković, Ljubiša Lilić, and Borislav Cicović. "Muscle Contractile Properties Measured by the Tensiomyography (TMG) Method in Top-Level Football Players of Different Playing Positions: The Case of Serbian Super League." International Journal of Environmental Research and Public Health 20, no. 2 (January 4, 2023): 924. http://dx.doi.org/10.3390/ijerph20020924.

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The aim of this study is to investigate the differences in muscle contractile properties measured by the TMG method between top-level football players of different playing positions. The sample consisted of 57 football players from the Serbian Super League, divided into three groups: defenders—DF, midfielders—MF, and forwards—FW. Muscles included in the study were the Rectus Femoris (RF), Vastus Medialis (VM), Vastus Lateralis (VL), Biceps Femoris (BF), and Semitendinosus (ST) of the right (R) and left (L) leg. The TMG parameters used in this study were contraction time (Tc), delay time (Td), relaxation time (Tr), maximal displacement (Dm), and sustain time (Ts). The ANOVA results showed that differences in TMG parameters between top-level football players of different playing positions are small and exist only in the Tr of RF (F = 4.658, p = 0.014), BF (F = 4.433, p = 0.016), and ST muscle (F = 3.808, p = 0.028), and the Tc (F = 3.214, p = 0.048) and Td (F = 3.705, p = 0.031) of the VM muscle. All differences were detected between DF and FW players, and all differences were in the left (non-dominant) leg. The results obtained in this study indicate that the training and selection process in football, from the aspect of functional and mechanical muscle properties, should be similar for all players, regardless of playing position. It has been shown that TMG has relatively low sensitive strength for detecting differences between football players of different playing positions.

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Voronova, Valentina, Irene Khmelnitska, Victor Kostyukevich, and Tetiana Petrovska. "Psychological Components of a Football Coach Personality." Sport Mont 19, S2 (September 1, 2021): 137–41. http://dx.doi.org/10.26773/smj.210923.

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The article analyses and summarizes the views on the coach’s personality in sports that are available in modern sci- entific and methodological literature and in the Internet resources. Attention is drawn to the fact that although the points of view differ, it is possible to single out those properties of a coach's personality that, according to scientists, determine the achievement of success in sports activities: gnostic, design, constructive, communicative and orga- nizational properties. The results of own research include the motivational component of the coach’s personality; organizational and communication skills as components of their pedagogical mastery; professionally important personality traits of coaches that determine the individual style of their activities; data from the analysis of the degree of formation of professional burnout and the current state of coaches. The obtained data are compared and explained according to the professional categories of coaches (A and B), who participated in the research.The formation and improvement of the personal qualities necessary for the successful professional activity of a football coach are very important and should be under the constant control of the individual; changes of admissible person- al indicators of professionally significant properties in trainers are related to the level of their professional skill, de- pend on level of emotional burnout and deviation from autogenous norm (according to an indicator of vegetative coefficient); revealed mainly low and intermediate level of ability to empathize in the surveyed coaches, regardless of category, age and experience, suggests that they have insufficient training of pedagogical skills.

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Wannop, John William, Geng Luo, and Darren Stefanyshyn. "Wear influences footwear traction properties in Canadian high school football." Footwear Science 1, no. 3 (September 2009): 121–27. http://dx.doi.org/10.1080/19424280903410062.

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Jastifer, James, Richard Kent, Jeff Crandall, Chris Sherwood, David Lessley, Kirk A. McCullough, Michael J. Coughlin, and Robert B. Anderson. "The Athletic Shoe in Football." Sports Health: A Multidisciplinary Approach 9, no. 2 (February 2, 2017): 126–31. http://dx.doi.org/10.1177/1941738117690717.

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Background: Foot and ankle injuries are common in sports, particularly in cleated athletes. Traditionally, the athletic shoe has not been regarded as a piece of protective equipment but rather as a part of the uniform, with a primary focus on performance and subjective feedback measures of comfort. Changes in turf and shoe design have poorly understood implications on the health and safety of players. Evidence Acquisition: A literature search of the MEDLINE and PubMed databases was conducted. Keywords included athletic shoewear, cleated shoe, football shoes, and shoewear, and search parameters were between the years 2000 and 2016. Study Design: Clinical review. Level of Evidence: Level 5. Results: The athletic shoe is an important piece of protective sports equipment. There are several important structural considerations of shoe design, including biomechanical compliance, cleat and turf interaction, and shoe sizing/fit, that affect the way an athlete engages with the playing surface and carry important potential implications regarding player safety if not understood and addressed. Conclusion: Athletic footwear should be considered an integral piece of protective equipment rather than simply an extension of the uniform apparel. More research is needed to define optimal shoe sizing, the effect that design has on mechanical load, and how cleat properties, including pattern and structure, interact with the variety of playing surfaces.

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Shpaniuk, V. V. "Relationship of the CNS Individual and TypologicalProperties and Echocardioscopy Parameters of the Heart of Highly Qualified Football Players." CHERKASY UNIVERSITY BULLETIN: BIOLOGICAL SCIENCES SERIES, no. 2 (2021): 88–95. http://dx.doi.org/10.31651/2076-5835-2018-1-2021-2-88-95.

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Introduction.The importance and relevance of studyingthe adaptation of sportsman’s organism to training and competitive loads in modern conditions is caused by ever-increasing demands for their morphofunctional and mental capabilities. The study of the ratio of functional characteristics of the cardiovascular system by echocardioscopy indicators and their connection with the individual-typological properties of the CNS is stipulated by theoretical and practical necessity.Purpose.The goal of the research is to determine the relationship between the individual and typological properties of the central nervous system and the functional capabilities of the heart in terms of the echocardioscopy parameters in highly qualified football players.Methods. The functional characteristics of the heart were studied in highly qualified football players (n = 64) and non-sportsmen (n = 73) with different individual and typological properties of the CNS by echocardioscopy parameters. Individual and typological differences and properties of the main nervous processes were determined by the method of M.V. Makarenko using the “Diagnost-1M” computer system.Result.At rest, there were no significant differences between the mean values of heart function: end-diastolic and systolic heart volumes, cardiac output and blood ejection fraction in groups of players with different levels of individual typological properties of the CNS. There were no correlations (r = 0.21 –0.27, p = 0.063 –0.078) between them. These results may indicate that at rest, the parameters of end-diastolic and systolic cardiac volumes, cardiac output and blood ejection fraction in highly skilled football players represent automatic cardiac properties, and they are realized without special involvement of the higher CNS levels.There were correlations (r = 0.37–056; p = 0.024–0.036) between the studied parameters in non-sportsmen with different levels of functional nervous process mobility and statistically significant differences in the average values of end-diastolic and systolic cardiac volumes, cardiac output and blood ejection fraction. All this indicates a correlation between hemodynamic parameters and individual and typological properties of the CNS.Originality. The problem of the individual reserves of the heart gradually subjected to the regulatory influence of more economical autonomous self-regulation mechanisms in the process of long-term sports training and professional selection of football players is studied and discussed.Conclusion. Differences of average values of the heart hemodynamic parameters of individual typological properties of CNS in sportsmen and non-sportsmen were revealed. The correlation between the indexes of functional mobility of the CNS nervous processes and the indicators of cardiac activity in non-sportsmen, and the lack of correlation in highly qualified football players were found. It indicates that there is a weakening of the influence of the higher parts of the brain on the autonomous mechanisms of the heart work regulation in sportsmen.Key words:cardiovascular system, functional mobility of nervous processes, sportsmen, non-sportsmen.

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Tyler, B. David, and Joe Cobbs. "All Rivals Are Not Equal: Clarifying Misrepresentations and Discerning Three Core Properties of Rivalry." Journal of Sport Management 31, no. 1 (January 2017): 1–14. http://dx.doi.org/10.1123/jsm.2015-0371.

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Rivalry is ubiquitous across sports, yet the representation and specification of rivalry varies widely. Such discrepancy poses problems when distinguishing between multiple out-groups and when employing rivalry to explain related questions such as demand for sport consumption. In this paper, we critically examine the many differing conceptions of rivalry and to discern properties of rivalry across different sports. We survey college football fans (N = 5,304) to empirically test the exclusivity, scale, and symmetry of rivalry; then, we replicate the study twice in the context of professional sports (1,649 National Football League fans; 1,435 National Hockey League fans). Results consistently indicate that fans perceive multiple rivals (nonexclusive), rivalry intensity varies among rivals (continuous in scale), and opposing fans rarely share equivalent perceptions of the rivalry (bidirectional). Accordingly, we develop and test a parsimonious 100-point rivalry allocation measure that specifies these three properties of rivalry.

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Gallardo, Leonor, Jorge García-Unanue, Pascal Haxaire, Víctor Villacañas, Enrique Colino, and Javier Sánchez-Sánchez. "Effect of extrinsic factors and structural components on sport functionality of artificial turf surfaces." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 233, no. 1 (November 14, 2018): 135–44. http://dx.doi.org/10.1177/1754337118809229.

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The aim of this study was to analyse the influence of environmental factors on the mechanical behaviour of artificial turf football pitches and evaluate the effect of induced wear on the mechanical properties of the surface. A series of laboratory tests were conducted on 31 samples of artificial turf. The tests were done by a Fédération Internationale de Football Association–accredited test institute. In wet conditions, the shock absorption and linear friction slide were significantly higher than in dry conditions, whereas the angle ball rebound was significantly lower. Regarding the wear effect, a significant increment of the vertical rebound and rotational resistance was produced. The shock absorption and vertical deformation significantly decreased. The mechanical properties deteriorated 5.90% less in the samples that had installed an elastic layer compared to those that did not. The shock absorption was significantly lower at 40°C compared to the shock absorption at −5°C and 23°C. These findings highlight the importance of installing an elastic layer in artificial turf football pitches, to increase their useful life and, therefore, to assure the security of the users for a longer time.

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Narizuka, Takuma, Ken Yamamoto, and Yoshihiro Yamazaki. "Statistical properties of position-dependent ball-passing networks in football games." Physica A: Statistical Mechanics and its Applications 412 (October 2014): 157–68. http://dx.doi.org/10.1016/j.physa.2014.06.037.

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Bağış, Yunus Emre. "Comparison of Strength Values of Professional Footballers According to Their Positions before Football Season." Journal of Educational Issues 6, no. 1 (June 28, 2020): 395. http://dx.doi.org/10.5296/jei.v6i1.17133.

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The purpose of the present study was to compare the strength values of professional footballers according to their positions before the football season. The study group consisted of 27 professional footballers of Şanlıurfaspor Football Club in the 2nd League of Turkey. The mean height of the Study Group was 180.92±6.18 (cm), mean body weight was 80.18±1.5 (kg), and the mean age was 26.40±4.4 (years). The inclusion criteria for the study was being volunteers, and the necessary permissions were obtained from the players, club managers and coaches. The Precor-brand device was used to measure the differences of strengths according to the positions of the footballers. “1 RM” measurements were made from shoulder press, latt pully, leg curl, leg extension, and leg press machines in the footballers. The SPSS 24.00 Program was used in the statistical analysis of the study data. The descriptive statistics were given as mean, standard deviation, and minimum and maximum values. The normality test of the data was analyzed with the Shapiro-Wilk Test. One-Way Anova Test was used to identify the differences between the players and the positions. The significance level was determined as 0.05. According to the results obtained in the study, no significant differences were detected in strength values between goalkeeper, defender, midfielder, and striker positions (p > 0.05). As a result, among the biomotoric properties, strength is important, and quite necessary for a footballer to perform at a high level. These values obtained from 2nd League football players are important for being taken as reference values, and it can be argued that these values obtained in the pre-season prepared the basis for the lack of qualitative differences. In future studies, data that will be obtained from different league levels and training stages will lead to research being considered differently.

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Castilho, Thuanny, Philippe Sarkis, Ana Julia Milani, Leonardo Santos Antunes, and Livia Azeredo Alves Antunes. "Impact of oral disease and disorders on Oral Health-Related Quality of Life of Brazilian football athletes: a cross-sectional study." Research, Society and Development 11, no. 4 (March 18, 2022): e28311426377. http://dx.doi.org/10.33448/rsd-v11i4.26377.

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Introduction: The athletes who practice sports routinely are exposed to the onset of numerous diseases. Objective: To evaluate oral conditions and their impact on oral health-related quality of life (OHRQoL) in Brazilian football athletes using OHIP-14 questionnaire. Methods: In this cross-sectional study, after sample calculation, football athletes were recruited in Rio de Janeiro, Brazil. Clinical and non-clinical data were collected. Psychometrics properties from OHIP-14 were assessed and the student’s T-test was used to evaluate the associations. Results: From 45 football athletes recruited, after applying the eligibility criteria, 34 athletes were included. The most frequent oral conditions observed were dental erosion (85.3%) and malocclusion (85.3%). OHIP-14 had satisfactory properties (α of Cronbach = 0.80 and test-retest/ICC = 0.90). The mean of impact on OHRQoL was 2.79 (± 3.98). There were association of OHIP-14 total score (p=0.01) and the physical pain subscale (p<0.05) for tooth sensitivity, psychological discomfort subscale for dental caries (p=0.01), physical pain subscale (p=0.04) and psychological disability (p=0.01) for malocclusion. Conclusions: The most prevalent oral conditions in athletes were dental erosion and malocclusion. Dental caries, malocclusion and tooth sensitivity were most likely to impact OHRQoL. The OHIP-14 is a satisfactory instrument to detect impact on OHRQoL in Brazilian athletes.

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Yanovskaya, Yu. "Lifestyle of football fans: psychological space features." Fundamental and applied researches in practice of leading scientific schools 32, no. 2 (April 30, 2019): 36–40. http://dx.doi.org/10.33531/farplss.2019.2.05.

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The subjects are 299 men aged 18 to 29 years old among which residents of Ukraine (198 persons) and Poland (101 persons) occupying different positions (lawyers, engineers, economists, managers, managers, specialties, etc). Of the studied Ukrainians - 49 men, and among the investigated Poles, 47 men are directly related to the fan group of their city, that is, they belong to the ultra’s association. The purpose of the work is to determine the structure of the psychological space of a "fan" lifestyle. The methods used: a numerical scaling method to measure the value of "maintaining a favorite team" and comparing it with other values; method "Completeness of sentences"; the technique is aimed at studying the leading lifestyle of Ch. Morris; method of reactive and personality anxiety diagnostics of Ch.D. Spielberger, Yu.L.Hanin; the method of multivariate analysis of personality of R. Kettell (105) form C. The research plan of the intergroup comparison is used to determine the deindividualized, averaged information about the characteristic psychological properties of each group members. The model of the integral psychological space of the lifestyle of men who are involved in football sickening is obtained. Four vectors which collectively create an integral psychological space of stylistic features of football fans are allocated. The psychological content of each of the defined vectors is described. Graphic representation in the form of a three-dimensional model, where the vectors of such axes are the vector of independence, the vector of harmony of life, the vector of inclusion. Conditional zero is a rolled vector of mentality. The psychological space of lifestyle of football fans has been constructed, connections between psychological spaces of different groups of football fans have been determined. The peculiarity of this model is that it allows us to clearly demonstrate the typology of football fans and to clearly distinguish the features of football fans lifestyle.

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Zamotaev, I. V., and V. P. Belobrov. "Position of soils and soil-like formations of football grounds in the soil classification system." Dokuchaev Soil Bulletin, no. 79 (July 1, 2015): 91–110. http://dx.doi.org/10.19047/0136-1694-2015-79-91-110.

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Under consideration is the classification of soils and soil-like formations in special landscapes and the football ground in particular. The latter is usually represented by soils subjected to human impacts of varying intensity: from weakly transformed by technogenic processes to artificial soils or technogenic superficial formations. The objects of research are more than 40 football grounds in Russia and the Republic of Byelarus. They differ in the age (exploitation time), regular and intensive technogenic loads, natural conditions and soil properties. The football grounds under study were divided into 3 groups: sports-ground at the age of its exploitation (less than 5 years), sports-mass grounds (30-50 years) and professional football grounds (50-75 years). Every group of football grounds is characteristic of soils and technogenic superficial formations represented by (1) technogenic-natural soils, (2) technogenically transformed soils and (3) technogenic superficial formations. The first two groups include the surface-transformed and disturbed soils, the natural profile of which is weakly changed. The technogenic superficial formations artificially constructed on the buried horizons of natural soils are highly subjected to technogenesis. In dependence on natural and technogenic conditions, age or exploitation time, peculiar features of soil stratum on football grounds it is possible to recognize a postlithogenic type of soddy-podzolic soils as well as 3 synlithogenic types represented by techno-soddy podzolic soil and 2 types of technogenic superficial formations including primitive and soddy quasizems. The evolution trends are striving to develop three subtypes of soddy quasizems under all the bioclimatic conditions including lessive, gleyic and solonetzic ones, whereas under humid conditions of the Moscow region there exist 5 subtypes of techno-soddy podzolic soils represented by lessive, gleyic, technogenically overcompacted, residual-carbonate and chemically polluted ones.

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Maqueira, Juan M., Sebastián Bruque, and Ákos Uhrin. "Talent management: two pathways to glory? Lessons from the sports arena." Employee Relations 41, no. 1 (January 7, 2019): 34–51. http://dx.doi.org/10.1108/er-11-2017-0271.

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PurposeThe purpose of this paper is to analyze the relationship between financial and operational performance and the application of two different talent management (TM) models: internal talent development model and external talent capture model. Comparative case studies of the Football Club Barcelona and the Real Madrid Football Club allow drawing a definitive conclusion for TM in companies related to the competitive strategy.Design/methodology/approachThe two TM models are examined via a longitudinal comparative case study analysis: FC Barcelona and Real Madrid CF. Present paper builds on secondary sources: first, the TM properties of the clubs were extracted from academic sources and newspapers; second, data used to analyze the financial performance were derived from SABI database and operational performance was measured as the effectiveness in winning trophies in football championships (data gathered from Union of European Football Associations and International Federation of Football Associations databases).FindingsThe case analysis reveals that the two TM models offer equally effective financial and operational performance outcomes. The internal talent development model would be more useful for companies whose competitive advantage is achieved through differentiation through teamwork. However, companies that do not achieve a clear differentiation through teamwork should opt for the external talent capture model.Originality/valueTalent is one of a company’s most important intangible assets. Although there exists a growing interest among companies as to the best way to TM, practical models on how to manage talent are virtually nonexistent. Comparative case studies from the sports arena allow for the extraction of lessons for companies related to TM and competitive strategy.

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Gulistan, Muhammad, Shah Nawaz, and Nasruddin Hassan. "Neutrosophic Triplet Non-Associative Semihypergroups with Application." Symmetry 10, no. 11 (November 8, 2018): 613. http://dx.doi.org/10.3390/sym10110613.

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In this paper, we extended the idea of a neutrosophic triplet set to non-associative semihypergroups and define neutrosophic triplet LA-semihypergroup. We discuss some basic results and properties. At the end, we provide an application of the proposed structure in Football.

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Hasdemir, Hakan, Mustafa Yildiz, Gokhan Metin, Hasan Kasap, Banu Şahin Yildiz, Bariş Yaylak, and Ayşegül Özyurt. "Aortic properties and atrial electrophysiology in the young and old football players." Revista da Associação Médica Brasileira 57, no. 3 (May 2011): 280–85. http://dx.doi.org/10.1590/s0104-42302011000300009.

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Shewchenko, N. "Heading in football. Part 3: Effect of ball properties on head response." British Journal of Sports Medicine 39, Supplement 1 (August 1, 2005): i33—i39. http://dx.doi.org/10.1136/bjsm.2005.019059.

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Cantu, R. C. "Heading in football. Part 3: Effect of ball properties on head response." Yearbook of Sports Medicine 2007 (January 2007): 20–21. http://dx.doi.org/10.1016/s0162-0908(08)70025-4.

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Thompsett, Benjamin, Andy Harland, and Jonathan Roberts. "Investigating the Relationship between Physical Properties of a Football and Player Perceptions." Procedia Engineering 147 (2016): 519–25. http://dx.doi.org/10.1016/j.proeng.2016.06.231.

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Hasdemir, Hakan, Mustafa Yıldız, Gokhan Metin, Hasan Kasap, Banu Şahin Yıldız, Barış Yaylak, and Ayşegül Özyurt. "Aortic properties and atrial electrophysiology in the young and old football players." Revista da Associação Médica Brasileira (English Edition) 57, no. 3 (May 2011): 276–81. http://dx.doi.org/10.1016/s2255-4823(11)70059-5.

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Hasdemir, Hakan, Mustafa Yıldız, Gokhan Metin, Hasan Kasap, Banu Şahin Yıldız, Barış Yaylak, and Ayşegül Özyurt. "Aortic properties and atrial electrophysiology in the young and old football players." Revista da Associação Médica Brasileira 57, no. 3 (May 2011): 276–81. http://dx.doi.org/10.1016/s0104-4230(11)70059-8.

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Narizuka, Takuma, and Yoshihiro Yamazaki. "Statistical properties for directional alignment and chasing of players in football games." EPL (Europhysics Letters) 116, no. 6 (December 1, 2016): 68001. http://dx.doi.org/10.1209/0295-5075/116/68001.

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R. Gdovin, Jacob, Charles C. Williams, Samuel J. Wilson, Lauren A. Luginsland, Charles R. Allen, Chip Wade, and John C. Garner III. "Influences of Athletic Footwear on Ground Reaction Forces During A Sidestep Cutting Maneuver on Artificial Turf." International Journal of Kinesiology and Sports Science 6, no. 2 (April 30, 2018): 30. http://dx.doi.org/10.7575/aiac.ijkss.v.6n.2p.30.

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Background: Recreational athletes can select their desired footwear based on personal preferences of shoe properties such as comfort and weight. Commonly worn running shoes and cleated footwear with similar stud geometry and distribution are worn when performing sport-specific tasks such as a side-step cutting maneuver (SCM) in soccer and American football (hereafter, referred to as football). The effects of such footwear on injury mechanics have been documented with less being known regarding their effect on performance. Objective: The purpose of this study was to examine performance differences including peak ground reaction forces (pGRF), time-to-peak ground reaction forces (tpGRF) and the rate of force development (RFD) between football cleats (FB), soccer cleats (SOC), and traditional running sneakers (RUN) during the braking and propulsive phases of a SCM. Methodology: Eleven recreationally active males who participated in football and/or soccer-related activities at the time of testing completed the study. A 1 x 3 [1 Condition (SCM) x 3 Footwear (RUN, FB, SOC)] repeated measures ANOVA was utilized to analyze the aforementioned variables. Results: There were no significant differences (p > 0.05) between footwear conditions when comparing pGRF, tpGRF, or RFD in either the braking or propulsive phases. Conclusion: The results suggest that the studded and non-studded footwear allowed athletes to generate similar forces over a given time frame when performing a SCM.

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Villacañas, Víctor, Javier Sánchez-Sánchez, Jorge García-Unanue, Jorge López, and Leonor Gallardo. "The influence of various types of artificial turfs on football fields and their effects on the thermal profile of surfaces." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 231, no. 1 (August 2, 2016): 21–32. http://dx.doi.org/10.1177/1754337115624819.

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Surfaces of artificial turf have been continuously improved to resemble the characteristics and properties of natural grass. Nevertheless, these improvements are still unable to prevent the turf from reaching higher temperatures than natural grass. This situation results in customer dissatisfaction, decreased performance and the possibility of causing heat-related injuries. The aim of this study was to check how various structural components such as the type of fibre, the type of infill, the age of the turf and the hours of use influence the temperature (°C) of artificial turf football fields. In situ tests were performed using an infrared thermographic camera according to the standard ISO 18434-1:2005 and the normative standard of the Fédération Internationale de Football Association for the certification of artificial turf football fields. The results show higher temperatures in artificial turf fields built with styrene–butadiene rubber and fibrillated fibres. This shows that the type of infill and fibre affects the temperature of third-generation artificial turf fields, the thermoplastic rubber and the monofilament fibres being the components that contribute significantly to the reduction of the temperature.

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Colino, Enrique, Lis Corral-Gómez, David Rodríguez-Rosa, Sergio Juárez-Pérez, Jorge García-Unanue, Antonio González-Rodríguez, Javier Sánchez-Sánchez, Jose Luis Felipe, Leonor Gallardo, and Fernando Jose Castillo-García. "Novel Methodology for Football Rebound Test Method." Sensors 20, no. 6 (March 18, 2020): 1688. http://dx.doi.org/10.3390/s20061688.

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Assessing and keeping control of the mechanical properties of sport surfaces is a relevant task in sports since it enables athletes to train and compete safely and under equal conditions. Currently, different tests are used for assessing athlete- and ball-surface interactions in artificial turf pitches. In order to make these evaluations more agile and accessible for every facility, it is important to develop new apparatus that enable to perform the tests in an easier and quicker way. The existing equipment for determining the vertical ball behavior requires a complex and non-easily transportable device in which the ball must be fixed to the upper part of the frame in a very precise position by means of a magnet. The rebound height is determined by capturing the acoustic signal produced when the ball bounces on the turf. When extended tests are conducted, the time required to evaluate a single field is too high due to the non-valid trials. This work proposes a novel methodology which allows to notoriously decrease the time of testing fields maintaining the repeatability and accuracy of the test method together with a compact device for improving its mobility and transport. Simulations and experiments demonstrates the repeatability and accuracy of the results obtained by the proposed device, which decreases the non-valid trials and notoriously reduces the time for field evaluation.

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Peeters, Bart, Herman Van der Auweraer, Frederik Vanhollebeke, and Patrick Guillaume. "Operational Modal Analysis for Estimating the Dynamic Properties of a Stadium Structure during a Football Game." Shock and Vibration 14, no. 4 (2007): 283–303. http://dx.doi.org/10.1155/2007/531739.

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During a football game, the ambient vibrations at the roof of a football stadium were recorded. A very large data set consisting of 4 hours of data, sampled at 80 Hz, is available. By a data reduction procedure, the complete data set could be analysed at once in a very short time. The data set was also split in shorter segments corresponding to certain events before, during and after the game to investigate the influence of varying operational conditions on the dynamic properties.As the structural vibrations were caused by unmeasurable wind and crowd excitation, Operational Modal Analysis has to be applied to find the dynamic characteristics of the structure. The new operational PolyMAX parameter estimation method is used and compared with Stochastic Subspace Identification. Stochastic Subspace Identification requires the correlations between the responses as primary data, whereas PolyMAX operates on spectra or half spectra (i.e. the Fourier transform of the positive time lags of the correlation functions). The main advantage of PolyMAX is that it yields extremely clear stabilisation diagrams, making an automation of the parameter identification process rather straightforward. This enables a continuous monitoring of the dynamic properties of a structure.

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Edouard, Pascal, Johan Lahti, Ryu Nagahara, Pierre Samozino, Laurent Navarro, Kenny Guex, Jérémy Rossi, Matt Brughelli, Jurdan Mendiguchia, and Jean-Benoît Morin. "Low Horizontal Force Production Capacity during Sprinting as a Potential Risk Factor of Hamstring Injury in Football." International Journal of Environmental Research and Public Health 18, no. 15 (July 23, 2021): 7827. http://dx.doi.org/10.3390/ijerph18157827.

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Clear decreases in horizontal force production capacity during sprint acceleration have been reported after hamstring injuries (HI) in football players. We hypothesized that lower FH0 is associated with a higher HI occurrence in football players. We aimed to analyze the association between sprint running horizontal force production capacities at low (FH0) and high (V0) velocities, and HI occurrence in football. This prospective cohort study included 284 football players over one season. All players performed 30 m field sprints at the beginning and different times during the season. Sprint velocity data were used to compute sprint mechanical properties. Players’ injury data were prospectively collected during the entire season. Cox regression analyses were performed using new HI as the outcome, and horizontal force production capacity (FH0 and V0) was used at the start of the season (model 1) and at each measurement time point within the season (model 2) as explanatory variables, adjusted for individual players’ (model 2) age, geographical group of players, height, body mass, and previous HI, with cumulative hours of football practice as the time scale. A total of 47 new HI (20% of all injuries) were observed in 38 out of 284 players (13%). There were no associations between FH0 and/or V0 values at the start of the season and new HI occurrence during the season (model 1). During the season, a total of 801 measurements were performed, from one to six per player. Lower measured FH0 values were significantly associated with a higher risk of sustaining HI within the weeks following sprint measurement (HR = 2.67 (95% CI: 1.51 to 4.73), p < 0.001) (model 2). In conclusion, low horizontal force production capacities at low velocity during early sprint acceleration (FH0) may be considered as a potential additional factor associated with HI risk in a comprehensive, multifactorial, and individualized approach.

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Clemente, Filipe Manuel, Micael Santos Couceiro, Fernando Manuel Lourenço Martins, and Rui Sousa Mendes. "Using network metrics to investigate football team players' connections: A pilot study." Motriz: Revista de Educação Física 20, no. 3 (September 2014): 262–71. http://dx.doi.org/10.1590/s1980-65742014000300004.

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The aim of this pilot study was propose a set of network methods to measure the specific properties of football teams. These metrics were organized on "meso" and "micro" analysis levels. Five official matches of the same team on the First Portuguese Football League were analyzed. An overall of 577 offensive plays were analyzed from the five matches. From the adjacency matrices developed per each offensive play it were computed the scaled connectivity, the clustering coefficient and the centroid significance and centroid conformity. Results showed that the highest values of scaled connectivity were found in lateral defenders and central and midfielder players and the lowest values were found in the striker and goalkeeper. The highest values of clustering coefficient were generally found in midfielders and forwards. In addition, the centroid results showed that lateral and central defenders tend to be the centroid players in the attacking process. In sum, this study showed that network metrics can be a powerful tool to help coaches to understanding the specific team's properties, thus supporting decision-making and improving sports training based on match analysis.

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G.G., Polevoy. "Correlation of Coordination Abilities, Physical Qualities and Mental Processes of Football Players." Pakistan Journal of Medical and Health Sciences 16, no. 2 (February 26, 2022): 497–501. http://dx.doi.org/10.53350/pjmhs22162497.

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The aim set out in Article research is to find new of methodical approaches to improve the methods of development of coordination abilities of young players. Despite the proven efficacy of the differentiated approach in the preparation of sports reserve, no data found, taking into account the typological features of display properties of the nervous system of children involved in football. Methods and techniques: We used statistical methods to determine the validity and reliability of the results of scientific research. Statistical analysis was performed using a personal computer Pentium- 4 and using the Microsoft standard statistical software package Excel 2007. Correlation analysis was performed using the program Bio Stat 2016. Results: Identified and synthesized a new classification of specific coordination abilities in terms of their impact on mental processes of young football players. The new data that expand and deepen the modern theory and methodology of football with new knowledge about the coordination abilities, peculiarities of the relationship indicators conditional abilities and mental processes with the indicators of specific coordination abilities of the players with strong and weak nervous system. Scientific novelty: Demonstrated prospect for a differentiated approach based on a typology. The features of the relationship of coordination abilities indicators with indicators of conditional abilities and mental processes of the players of 11-12 years with a "strong" and "weak" the nervous system. Defined "leading" and "additional" specific types of coordination abilities in different groups of players. Practical significance: Accounting data obtained as a result of the correlation analysis, in the training process of young players can provide a significant increase in the efficiency of the development process -specific coordination abilities, level of mastery of the technical and tactical methods and competitive performance, as well as improve the performance of the mental processes of children involved in football. Keywords: differentiated approach, the properties of the nervous system, coordination abilities, psychical processes.

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G.G., Polevoy. "Correlation of Coordination Abilities, Physical Qualities and Mental Processes of Football Players." Pakistan Journal of Medical and Health Sciences 15, no. 12 (December 30, 2021): 3458–61. http://dx.doi.org/10.53350/pjmhs2115123458.

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The aim set out in Article research is to find new of methodical approaches to improve the methods of development of coordination abilities of young players. Despite the proven efficacy of the differentiated approach in the preparation of sports reserve, no data found, taking into account the typological features of display properties of the nervous system of children involved in football. Methods and techniques. We used statistical methods to determine the validity and reliability of the results of scientific research. Statistical analysis was performed using a personal computer Pentium- 4 and using the Microsoft standard statistical software package Excel 2007. Correlation analysis was performed using the program Bio Stat 2016. Results. Identified and synthesized a new classification of specific coordination abilities in terms of their impact on mental processes of young football players. The new data that expand and deepen the modern theory and methodology of football with new knowledge about the coordination abilities, peculiarities of the relationship indicators conditional abilities and mental processes with the indicators of specific coordination abilities of the players with strong and weak nervous system. Scientific novelty. Demonstrated prospect for a differentiated approach based on a typology. The features of the relationship of coordination abilities indicators with indicators of conditional abilities and mental processes of the players of 11-12 years with a "strong" and "weak" the nervous system. Defined "leading" and "additional" specific types of coordination abilities in different groups of players. Practical significance. Accounting data obtained as a result of the correlation analysis, in the training process of young players can provide a significant increase in the efficiency of the development process -specific coordination abilities, level of mastery of the technical and tactical methods and competitive performance, as well as improve the performance of the mental processes of children involved in football. Keywords: differentiated approach, the properties of the nervous system, coordination abilities, psychical processes

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G.G, Polevoy, Egorycheva E.V, and Fedorov A.V. "Development of coordination abilities of football players taking into account the strength of their nervous system." Pakistan Journal of Medical and Health Sciences 15, no. 9 (September 30, 2021): 2651–55. http://dx.doi.org/10.53350/pjmhs211592651.

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This article analyzes the results of applying the methodology of differential development of specific coordination abilities of players 11-12 years old, with a variety of typological features displays properties of the nervous system. An analysis of the results of the pedagogical experiment revealed changes in terms of coordination abilities, mental processes and conditional abilities of young players. However, higher indices changes made players experimental group compared to controls. Moreover, the experimental group, these changes are significant and reliable. The authors conclude that the use of experimental techniques of differential development of coordination abilities of the players of 11-12 years with the typological features of display properties of the nervous system leads to an improvement of all parameters of test exercises that characterize the level of development of specific coordination abilities and mental processes, such as short-term memory, volume, intensity, stability and switching attention, and operational thinking. This ultimately improves the quality of technical readiness and effectiveness of the competitive activities of young football players. Keywords: football, coordination abilities, methods, differentiated development.

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Göktaş, Erkan, and İsmail Türkmenoğlu. "The effect of eight-week pliometric exercises on some motoric properties of 14-17 years old soccer players." Journal of Human Sciences 19, no. 2 (April 16, 2022): 112–32. http://dx.doi.org/10.14687/jhs.v19i2.6193.

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The aim of the study was to analyze the effects of the Eight Week Plyometric Exercise of male football players of 14-17 ages, done as an addition to their exercise program, on some of their motoric features; to support the studies conducted in this field as well as emphasizing its importance and to provide a new source for the studies to be done in the future. 50 male football players of 14- 17 ages, 25 of whom are in the experimental group and 25 of whom are in the control group, take part in the study. While the players in the control group are provided with in-season football training systematically, the players in the experimental group are provided with 45 minute additional plyometric training program for 3 days a week during a period of eight-week long. The process is measured with a pre-test conducted before the training and a post-test conducted after the training. SPSS 22.0 packaged software is used for statistical analysis. In the evaluation of the results, Two-way Repeated Measures ANOVA is used. When the measures of the experimental and control group is compared, the results of the measures of the pre-test conducted before the training is not meaningful, the results of the post-test conducted after the training is meaningful with the statistical rate P<0,05 in the following tests: Sit and Repeat Test, Illinois Agility Test, Back-Leg-Arm Strength Test, Vertical Jump Test, Flamingo Balance Test, Standing Long Jump Test, and Hand Grip Test. In the 30m. Sprint Test, the result with the statistical rate p>0,05 is found to be meaningless. In short, it is found that the Eight Week Plyometric Exercise Training Program male football players of 14-17 ages, done together with the football branch training program, has a positive effect on some of their motoric features. Extended English summary is in the end of Full Text PDF (TURKISH) file. Özet Çalışmanın amacı; 14–17 yaş grubundaki erkek sporcuların antrenmanlarına ek olarak yapılan 8 haftalık pliometrik antrenman çalışma programının, bazı motorik özelliklere etkisini incelemek, önemini vurgulamak ve bu alandaki yapılan çalışmalara destek olmakla birlikte gelecekteki çalışmalara kaynak oluşturmaktır. Araştırmaya 14-17 yaşlarında, 25 araştırma grubunda, 25 kontrol grubunda olmak üzere toplam 50 erkek sporcu katılmıştır. Araştırmada kontrol grubunda yer alan sporculara sistemli olarak futbol sezon içi branş antrenmanı yaptırılırken, deney grubunda yer alan sporculara ise ilave olarak 8 hafta süresince, haftada üç gün 45’er dakika pliometrik antrenman çalışma programı uygulanmıştır. Antrenman öncesi ön test ve antrenman sonrası son test olmak üzere iki ölçüm gerçekleştirilmiştir. İstatistiksel analizde SPSS 22.0 paket program kullanılmıştır. Değerlendirmede 2*2 tekrarlı ölçümler ANOVA analizi (Two-way Repeated Measures ANOVA) uygulanmıştır. Deney ve kontrol grubunun ölçüm değerleri kıyaslandığında, antrenman öncesinde yapılan ön test ölçüm değerlerinde aradaki çıkan fark anlamlı değilken, antrenman sonrasında yapılan son test ölçüm değerlerinde; Otur Uzan Eriş Testi, İllinois Çeviklik Testi, Sırt, Bacak, Kol Kuvveti Testi, Dikey Sıçrama Testi, Flamingo Denge Testi, Durarak Uzun Atlama Testi ve El Kavrama Kuvveti Testlerinde İstatistiksel olarak anlamlı olduğu görülürken (p<0.05), 30m. Sprint Sürat Testi değerlerinde ise anlamlı fark olmadığı tespit edilmiştir (p>0.05). Sonuç olarak; 14-17 yaş grubundaki erkek çocuklarda, futbol branş antrenman çalışma programı ile birlikte ilave olarak yapılan 8 hafta süresince pliometrik antrenman çalışma programının, bazı motorik özelliklere etkisi üzerinde, pozitif yönde etkisi olduğu tespit edilmiştir.

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Abualrub, Taher, and N. Aydin. "Additive cyclic codes over mixed alphabets and the football pool problem." Discrete Mathematics, Algorithms and Applications 09, no. 01 (February 2017): 1750010. http://dx.doi.org/10.1142/s1793830917500100.

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Motivated by a generalization of the football pool problem, we introduce additive cyclic codes over mixed alphabets of the form [Formula: see text] where [Formula: see text], [Formula: see text] for distinct primes [Formula: see text]. We study their algebraic properties, generating sets, and duals. Additionally, we give examples of additive cyclic codes over the alphabet [Formula: see text] that have best-known or optimal parameters.

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Prasetyo, Eko, Loggar Bhilawa, Aisyaturrahmi, and Dewi Prastiwi. "Covid-19 Effect to Return On Equity on European Football Club." International Journal of Scientific Research and Management 10, no. 04 (April 5, 2022): 3248–52. http://dx.doi.org/10.18535/ijsrm/v10i4.em4.

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This study aims to determine and analyze whether or not there are differences between financial ratios before and after the COVID-19 pandemic in 22 professional football clubs in Europe for the period 2019 to 2020. The financial ratio used is return on equity. This study uses a quantitative method using a comparative approach, because the data used are in the form of numbers and analyze using statistics and this research is to compare the similarities and differences of 2 or more properties and objects studied in a certain frame of mind. The data analysis method used was the paired sample t-test and the Wilcoxon signed rank test, which had previously been tested for normality. The results of data analysis show that there is a significant difference between the financial ratios of football clubs before and during the COVID-19 pandemic.

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Pintér, Gergő, and Imre Felde. "Analyzing the Behavior and Financial Status of Soccer Fans from a Mobile Phone Network Perspective: Euro 2016, a Case Study." Information 12, no. 11 (November 12, 2021): 468. http://dx.doi.org/10.3390/info12110468.

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Abstract:

In this study, Call Detail Records (CDRs) covering Budapest for the month of June in 2016 were analyzed. During this observation period, the 2016 UEFA European Football Championship took place, which significantly affected the habit of the residents despite the fact that not a single match was played in the city. We evaluated the fans’ behavior in Budapest during and after the Hungarian matches and found that the mobile phone network activity reflected the football fans’ behavior, demonstrating the potential of the use of mobile phone network data in a social sensing system. The Call Detail Records were enriched with mobile phone properties and used to analyze the subscribers’ devices. Applying the device information (Type Allocation Code) obtained from the activity records, the Subscriber Identity Modules (SIM), which do not operate in cell phones, were omitted from mobility analyses, allowing us to focus on the behavior of people. Mobile phone price was proposed and evaluated as a socioeconomic indicator and the correlation between the phone price and the mobility customs was found. We also found that, besides the cell phone price, the subscriber age and subscription type also had effects on users’ mobility. On the other hand, these factors did not seem to affect their interest in football.

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Journal articles on the topic 'Football properties'

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