Relevant bibliographies by topics / Football properties

Academic literature on the topic 'Football properties'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "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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Dissertations / Theses on the topic "Football properties"

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Silva, Tiago Moreira da. "The impact of internal and external loads in the neuromuscular and mechanical properties of hamstring muscles in football players." Master's thesis, 2018. http://hdl.handle.net/10348/9198.

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Master Thesis International Master in Performance Analysis of Sport
O conhecimento atual do rendimento humano está ainda longe de perceber como parâmetros físicos como as acelerações, desacelerações e saltos podem influenciar o rendimento de um jogador e em particular a funcionalidade muscular. Objetivos: O objetivo deste estudo foi analisar as relações entre as cargas internas e externas nas propriedades mecânicas e neuromusculares dos músculos isquiotibiais em jogadores de futebol. Em paralelo, esta investigação pretendeu caracterizar, por tipo de sessão de treino e em diferentes posições no campo, perfis específicos deste tipo de componentes físicas. Métodos: A amostra utilizada foi composta por jogadores de futebol (n=11) de um clube Lituano que compete na principal divisão do país, A Lyga. Os jogadores foram testados usando o aparelho Biodex System 3 no laboratório da LSU. Os mesmos jogadores foram reavaliados quatro semanas após a avaliação inicial enquanto que entre ambos os testes, a carga aplicada foi monitorizada diariamente com unidades GPS OptimEye S5 da Catapult Sports - Australia (carga externa) e com a PSE (carga interna) sendo mais tarde correlacionadas com os testes laboratoriais. Resultados: Os eventos de acelerações de baixa e moderada intensidade foram estatisticamente correlacionados de forma negativa (p =0.005; r =- 0.773 e p =0.011; r=-0728, respetivamente) com o aumento da tensão involuntária dos músculos isquiotibiais. Nos jogos oficiais verificaram-se valores significativamente mais elevados em parâmetros físicos como a carga individual do jogador, PSE e desacelerações. Relativamente as sessões de cariz físico, equipararam-se nas acelerações, pois nenhum resultado estatisticamente relevante foi obtido, enquanto que no total dos saltos existiu a probabilidade de o número de eventos ocorrer com mais frequência que em jogos. Os resultados obtidos em função da posição em campo, nomeadamente os defesas em comparação com os médios apresentaram um maior número de eventos em acelerações e saltos de baixa intensidade. Entre médios e avançados, foi identificada uma diminuição na perceção subjetiva de esforço e no número de eventos de aceleração de baixa e moderada intensidade. Os saltos baixos e médios ocorrem com mais frequência em avançados. Conclusão: Este estudo confirma que diferentes componentes físicas deverão ser consideradas nas diferentes sessões de treino. Ajudando a prescrever estímulos de treino semelhantes ao jogo tendo em conta a posição em campo e a preocupação pelo estado muscular, enriquecendo assim o rendimento individual e coletivo.
Current human performance knowledge is still far from understand how physical workloads such as acceleration, decelerations and jumps can influence performance and in particularly muscle functionality. Aims: The aim of this study was to examine the relationships between internal and external workload in the neuromuscular and mechanical properties of hamstring muscles in football players. In parallel, this study aimed to profile markers of these sort of loads for training formats and players’ positions. Methods: Sample used included football players (n=11) from one club which competes in A Lyga (Lithuania 1st division). The players were evaluated Using Biodex System 3 under laboratories condition at LSU. The retest of this protocol was done after four weeks while in between these assessments, the workload of the same players was monitored daily with GPS units from OptimEye S5, Catapult Sports - Australia (external load) and with RPE (internal load) having been later correlated with the laboratory tests. Results: Low and moderate accelerations events were negative correlated (p =0.005; r =-0.773 and p =0.011; r=- 0.728, respectively) with increase of hamstring muscle stiffness. In official matches were identified statiscally greater values than the remaining training sessions in physical parameters as player load, RPE and decelerations. Regarding physical sessions were similar in acceleration because no differences were found, while total jumps had a greater probability to occur more often in comparison with matches. Concerning the results obtained by players’ positions, namely defenders in comparison with midfielders presented a greater number of events in terms of low accelerations and jumps. Between midfielders and forwards, it was identified a decrease on RPE as well as low and moderate accelerations. Low and moderate jumps occurred often in forwards. Conclusion: This study confirmed that different physical loads must be considered to different formats. Helping to prescribe and replicate similar stimulus to the matches by player positions and should be aware about the muscle functionality with an aim to enrich the team and the individual performance.
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Book chapters on the topic "Football properties"

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Memmert, Daniel, and Dominik Raabe. "Key properties of long-term success in football." In Data Analytics in Football, 85–92. Abingdon, Oxon ; New York, NY : Routledge, 2018.: Routledge, 2018. http://dx.doi.org/10.4324/9781351210164-9.

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"Table 1. The material properties of the heading model." In Science and Football V, 66. Routledge, 2005. http://dx.doi.org/10.4324/9780203412992-22.

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Crepeau, Richard C. "A New Era." In NFL Football, 155–70. University of Illinois Press, 2020. http://dx.doi.org/10.5622/illinois/9780252043581.003.0010.

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Paul Tagliabue was a logical choice to succeed Pete Rozelle as Commissioner given his two decades as chief legal advisor to the league. It took fifty hours of debate by the search committee, four owners meetings, and eleven ballots to reach this logical decision. His first major achievement was coming to a labor settlement with Gene Upshaw and the NFLPA. Al Davis was instrumental in this process. This set the stage for the next round of television contracts netting $33M/team/year over the next four years and an expansion of network coverage and DirecTV. Then came expansion and relocation of franchises. Tagliabue moved to expand NFL involvement in public issues including moving the Super Bowl out of Arizona over the MLK Day controversy. Internal issues included the revenue sharing policies that were under threat by Jerry Jones and Dallas. The market was also expanded with the creation of NFL Properties led by Sara Levinson from MTV and a direct appeal to women fans. NFL Revenue increased significantly. Race continued to be a major issue. There was an increase in black quarterbacks, but no significant change in coaching and executive ranks. A Diversity Committee was created in 2002 and the Rooney Rule was adopted I 2004 with initial promising results but it was not sustained over the next 15 years. In March of 2004 Tagliabue announced his retirement amidst great praise for this time as Commissioner. The one issue that he failed to address was that of concussions and head injuries.
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Conference papers on the topic "Football properties"

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Honarmandi, Peyman, and Ali M. Sadegh. "Modeling and Impact Analysis of Football Helmets: Toward Mitigating mTBI." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87173.

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Head injuries, especially concussions, have become a subject of deep concern particularly in contact sports such as American Football. There is always a need to improve the design of football helmets in order to lower the risk of concussion. In this research, we developed a mathematical model to physically describe the head and helmet together against an impact load. The mechanical properties of helmet materials were obtained through compression tests and hysteresis loop experiments. These experimental data along with biomechanical data of head and brain available in literature were incorporated into our modeling and analysis. A code was developed to conduct impact analysis and the results are illustrated and discussed accordingly.
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Tierney, Greg, Jonathan Power, and Ciaran Simms. "471 The force experienced by the head during football heading is mainly influenced by the speed of the ball rather than its mechanical properties." In IOC World Conference on Prevention of Injury & Illness in Sport 2021. BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine, 2021. http://dx.doi.org/10.1136/bjsports-2021-ioc.432.

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Wei, Feng, Jerrod E. Braman, Brian T. Weaver, and Roger C. Haut. "Determination of In Vivo Ankle Ligament Strains During External Rotation of the Foot." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53395.

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Numerous studies have been conducted to evaluate the properties of shoe-surface interface conditions on natural grass and synthetic turfs [2,7,9]. It is suggested that ankle injuries are related to the torque generated in the joint. Recently, our laboratory has developed a surrogate ankle [10] for use with a rotational traction measurement apparatus on various surfaces [9]. External rotation, commonly thought as the mechanism of a high ankle sprain in football, is applied to the surrogate foot and the resistive torque is measured. The study suggests that synthetic turfs generate higher ankle torques than natural grasses, therefore implying a high injury risk on turfs. One disadvantage of these studies is that only artificial devices are used to represent the ankle. Consequently, it is not possible to determine ligament strains, which is crucial in determining ankle injury.
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Garimella, Harsha T., Hao Yuan, Brian D. Johnson, Semyon L. Slobounov, and Reuben H. Kraft. "A Two-Fiber Anisotropic Constitutive Model of Human Brain With Intravoxel Heterogeneity of Fiber Orientation Using Diffusion Spectrum Imaging (DSI)." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39107.

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Sports-related concussion is a major public health problem in the United States that is estimated to occur in 1.6–3.8 million individuals annually, and is particularly common in football. Despite the significance and growing concerns about the potential long-term consequences of concussion, its biomechanical mechanisms are not fully understood. Since 1970’s computational head modeling has proved to be an efficient tool for establishment of health injury criteria and studies on head injury mitigation. One important step in the computational modeling of the human head is to develop the mathematical material models (constitutive models) for the tissue. There have been many attempts to develop an accurate constitutive model for brain tissue. Recent experimental studies have highlighted the significant influence of axonal fibers on the non-linear and anisotropic behavior of brain tissue. Tractography based on diffusion tensor imaging (DTI) has been used in various previous studies to develop a constitutive model for human brain by including the anisotropic properties. Though DTI provides a macro scale information about the axonal fibers in the brain, it cannot directly describe multiple fiber orientations within a single voxel. To address this limitation within the DTI tractography, Diffusion Spectrum imaging (DSI), a variant of Diffusion Weighted Imaging, is used. DSI is generally used in deriving connectome sets and is sensitive to intravoxel heterogeneities of fiber orientation in diffusion direction caused by crossing fiber tracts and thus allowing for more accurate mapping of axonal trajectories than other diffusion methods. Thus more accurate constitutive models can be developed from the structural information about the human brain using DSI. This paper extends, the anisotropic constitutive models developed previously, for two family of fibers which will be useful in the computational modeling of the human brain using DSI.
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