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Rosbrook-Thompson, James, and Gary Armstrong. "FIELDS AND VISIONS." Du Bois Review: Social Science Research on Race 7, no. 2 (2010): 293–314. http://dx.doi.org/10.1017/s1742058x10000299.
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AbstractThe concept of the “African Personality” was celebrated by the continent's first post-colonial President, Kwame Nkrumah. Sweeping to power in Ghana's first general election in 1951, Nkrumah and his Convention People's Party—inspired by Marcus Garvey and W. E. B. Du Bois—espoused the doctrines of nationhood and self-reliance. The conceptual dimensions of Nkrumah's “African Personality” and the role he had in mind for Association Football (soccer) as an instrument of its expression are crucial points of this analysis. Here we attempt to locate Nkrumah's political ideal within the contemporary realities of the migration of young Ghanaian soccer talent, examining at the same time the socio-economic processes which act as “push” and “pull” mechanisms in the context of such migratory trends. While Nkrumah's “race-conscious,” pan-African forces have been utilized in the face of post-colonial identifications, soccer loyalties and objectives which are far more immediate and parochial in character continue to supersede those surrounding national or “racial” interests. Ghana's domestic game and national selection are riven by ethnic and regional hostilities while interlopers from Europe—some acting alone, others as emissaries for European soccer clubs—have laid down roots in Ghana, recognizing the nation as a breeding ground for talented, and comparatively cheap, young soccer talent. We argue that such inveterate ethno-regional rivalries, along with the conditions of neoliberal capitalism and its instrumental system of uneven geographical development, have provided entry points for the post-colonial forces so maligned by Nkrumah. Furthermore, we question the wisdom of notions of belonging based on bounded units such as “race” and attendant expressions of “race-consciousness.”
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Hollenbach, Amanda M., Renee Caviston, and Kenneth W. Rundell. "Ambient Particulate Matter and Urban Soccer Fields." Medicine & Science in Sports & Exercise 38, Supplement (May 2006): S38. http://dx.doi.org/10.1249/00005768-200605001-01051.
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Leal do Nascimento, Mestrando Matheus Vinícios, Doutorando Juliana Trindade Martins, Doutorando Patrick Luan Ferreira dos Santos, Regina Maria Monteiro de Castilho, and Rafael Montanari. "Compaction analysis in three low-performance soccer fields: a case study." Horticulture International Journal 5, no. 4 (August 6, 2021): 159–63. http://dx.doi.org/10.15406/hij.2021.05.00223.
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Football fields are the stage for major sporting competitions and essential for the practice of the sport, however, the intense traffic players during matches and training causes soil compaction. Compaction on soccer fields can damage the development of grass, affect the health of athletes, increasing the risk of injuries, and impairing gameplay. The present work aimed to identify the spatial distribution of compaction in low-performance soccer fields. Three soccer fields were selected, composed predominantly of potato grass (Paspalum notatum), which were divided into three sectors: S1- goalkeeper area (composed by the small and large area); S2–laterals (composed by the lateral ends of the field) and S3 - midfield (composed by the central interval between the large areas). Subsequently, the soil mechanical resistance to penetration (RMP) in the soil profile of 0–0.20m in each of the sectors was determined and the data obtained were submitted to analysis of variance. It was found that there is a presence and variation of soil compaction in the different sectors of the three soccer fields studied, with averages varying between 654.62kPa and 3788.58kPa. Compaction levels were identified in certain sectors that can be limited to the development of potato grass and harmful to the health of athletes. Thus, it is recommended to carry out decompaction and/or aeration operations in the fields to improve the physical conditions of the soil.
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Belobrov, V. P., and I. V. Zamotaev. "Evolution of the soil cover of soccer fields." Eurasian Soil Science 47, no. 4 (April 2014): 245–54. http://dx.doi.org/10.1134/s1064229314040012.
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Skirstad, Berit, and Packianathan Chelladurai. "For ‘Love’ and Money: A Sports Club’s Innovative Response to Multiple Logics." Journal of Sport Management 25, no. 4 (July 2011): 339–53. http://dx.doi.org/10.1123/jsm.25.4.339.
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This article builds on prior theory and research on institutional logics and shows how a multisports club changes during its organizational life from an all amateur or voluntary logic to embody multiple logics simultaneously with different subunits being aligned with different organizational fields. The emergence of the professional logic for elite soccer in the presence of a volunteer logic caused a change in the structure of the club whereby all the units in the club became economically and legally autonomous. Soccer was divisionalized into soccer for everybody and soccer for the elite. The creation of a shareholding company and the use of an investment company which introduced the commercial logic were the next steps. This paper extends the literature by suggesting that different and opposing institutional logics such as the amateur, the professional, and commercial logics can coexist within a multisports club or, to put it another way, that the multisports club may belong to several organizational fields.
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Swanson, Lisa. "Soccer Fields of Cultural [Re]Production: Creating “Good Boys” in Suburban America." Sociology of Sport Journal 26, no. 3 (September 2009): 404–24. http://dx.doi.org/10.1123/ssj.26.3.404.
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Zwick and Andrews (1999) argued that suburban American soccer fields merit critical academic attention because they highlight the practices of a dominant class. To gain an understanding of this specific field of power and privilege, I employed a multifaceted ethnographic approach to studying a group of upper-middle-class mothers whose children played youth soccer. I used Pierre Bourdieu’s (1984, 1993) sociological theories regarding the interplay between habitus and capital to analyze how the mothers shaped their sons’ youth sport experience to reproduce class status and social advantage in the next generation.
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Prosser, Howard. "Friendly fields: the promissory joy of playing soccer outdoors." Sport, Education and Society 26, no. 4 (April 16, 2021): 378–88. http://dx.doi.org/10.1080/13573322.2019.1705781.
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Curk, Miha, Matej Vidrih, Žiga Laznik, and Stanislav Trdan. "Turfgrass maintenance and management in soccer fields in Slovenia." Urban Forestry & Urban Greening 26 (August 2017): 191–97. http://dx.doi.org/10.1016/j.ufug.2016.08.003.
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Thanheiser, Selina Yasemin, Sven Grashey-Jansen, and Georg Armbruster. "Hardness measurement of natural and hybrid turf soccer fields." Sports Engineering 21, no. 4 (June 26, 2018): 367–77. http://dx.doi.org/10.1007/s12283-018-0281-2.
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Claringbould, Inge, and Johanna Adriaanse. "‘Silver Cups Versus Ice Creams’: Parental Involvement With the Construction of Gender in the Field of Their Son’s Soccer." Sociology of Sport Journal 32, no. 2 (June 2015): 201–19. http://dx.doi.org/10.1123/ssj.2014-0070.
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This study explores parents’ gendered meanings in their involvement with their son’s soccer participation. We use Bourdieu’s (1985; 1990; 2012) theoretical perspective of fields, positions, habitus and taking positions to examine the way in which parents in two Dutch soccer clubs reconstruct and negotiate gendered meanings through expressions, positioning and power relations within the field of their son’s soccer. The findings suggest that, within this field, a subdivision exists between the ‘main’ field, represented by masculine meanings, and the subordinated ‘serving-the-main’ field, represented by feminine values. The study contributes to a better understanding of the processes involved in the construction of gender in both subfields and highlights the way in which women who enter the ‘main’ field can be theorized as ‘space invaders’.
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Sun, Xu. "Research on the human-computer interaction principles and play-ability---Taking Pro Evolution soccer game as an example." Applied and Computational Engineering 73, no. 1 (July 5, 2024): 111–14. http://dx.doi.org/10.54254/2755-2721/73/20240372.
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With the continuous advancement of technology, an increasing number of games have entered people's fields of vision. Football, as one of the world's most popular sports, has also spawned numerous related football games, including the Pro Evolution Soccer Game. However, for many people, this game still remains relatively unfamiliar. This study aims to analyze the principles of human-computer interaction in the Pro Evolution Soccer game and explain why it offers higher playability and entertainment value. Furthermore, there is a limited amount of comprehensive analysis regarding human-computer interaction principles and the Pro Evolution Soccer game. Firstly, this paper will introduce the basic concepts and development history of the Pro Evolution Soccer Game. Then, this paper will delve into the principles and characteristics of human-computer interaction in the game by studying its interface design, control methods, and artificial intelligence systems. Finally, this paper will assess the playability of the Pro Evolution Soccer game through real-life case studies and provide suggestions for improvements. This research adopts the methodology of a literature review. The findings indicate that the Pro Evolution Soccer game enhances its playability through carefully designed settings and interactivity, providing players with increased entertainment value. These settings include intuitive game interfaces, diverse control methods, and intelligent virtual players. Overall, this study provides important references and guidance for understanding the principles of human-computer interaction in the Pro Evolution Soccer game and enhancing its playability.
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Khudair, Hamza Abdul Hussein, and Ali Makki Mahdi. "Organizational Affiliation of Soccer Primer League 2020 – 2021 from the Players Point Of View." Journal of Physical Education 33, no. 4 (December 28, 2021): 47–56. http://dx.doi.org/10.37359/jope.v33(4)2021.1211.
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The research aimed at constructing a scale for organizational affiliation in soccer primer league coaches for the season 2020 – 2021 from the players’ point of view as well as identifying the reality of organizational affiliation in soccer primer league coaches from the players’ point of view. The problem of the research lies in the fear of being excluded from the training process and the lack of a scale that measures this type of affiliation. The researchers used the descriptive method on (370) soccer primer league players. The scale consisted of (24) items and after being applied to the subjects, the data was collected and treated using SPSS to conclude significant differences in the organizational affiliation in all fields. The researchers recommended using this scale due to its positive effect for enhancing affiliation in coaches.
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Gilden, Robyn, Marc Plisko, Kathleen Hiteshew, Erika Friedmann, and Donald Milton. "Pesticide monitoring on soccer fields via shoe wipes and urine samples." Environmental Research 147 (May 2016): 294–96. http://dx.doi.org/10.1016/j.envres.2016.02.027.
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Uskoković, Vuk. "How the Game of Soccer can Foster Creative Research in Natural Sciences." Retos 51 (October 11, 2023): 179–99. http://dx.doi.org/10.47197/retos.v51.100346.
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The systems science approach based on exploration of analogies between distinct fields of inquiry can lead to the creation of new interdisciplinary branches of knowledge. In this essay, a series of such analogies between soccer and natural sciences is elaborated with the objective of recognizing the scientific elements intrinsic to the game of soccer and transcribing them to the creative practice of science. The sources of analogies are multifold, involving the tactical setups of the teamwork, the geometry and cybernetic principles governing the coordination of the players, the kinesthetic intelligence thereof and various psychological factors. The essay also intends to inspire the crafters of academic curricula to consider building courses around the intersections of a sport such as soccer and natural sciences so as to promote sportier and more spirited scientific communities. Along with the humanization of sciences via their cross-fertilization with soccer, the enlightenment of the latter profession may also result from this interdisciplinary marriage, so that the animalistic competitiveness in this sport gets suppressed and its artistic elements accentuated. Keywords: Academic culture, analogical reasoning, art, association football, science.
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Santos, Patrick Luan Ferreira dos, Matheus Vinícios Leal do Nascimento, João Victor Costa, and Roberto Lyra Villas Bôas. "Revitalization of an amateur sports field with emerald grass." Ornamental Horticulture 26, no. 4 (December 2020): 647–57. http://dx.doi.org/10.1590/2447-536x.v26i4.2212.
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Abstract With the increasing popularization of football (soccer), new technologies have arrived in Brazil that assist in the maintenance of sports fields, making it possible to increase the quality of turfgrass in both professional and amateur fields. Thus, the revitalization process has become fundamental in sports fields installed with emerald grass to improve game performance and turfgrass development. The objective of this study was to revitalize an amateur sports field in the interior of São Paulo state, Brazil, planted with emerald grass. The conditions of the field were initially assessed and a set of revitalization procedures were carried out from November 2019 to March 2020 to improve turfgrass quality, including: chemical analysis of the soil and liming; mowing of the grass and disposal of clippings; soil decompaction through aeration with solid tines; application of sand (top dressing); pest and weed control; planting of new sod; fertilization and maintenance. Technical training with employees was also conducted for subsequent field maintenance. All tested operations were essential and necessary to improve the aesthetics and quality of the amateur sports field, so that the turfgrass could be revitalized and ready for use in soccer matches.
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Miyamori, Takayuki, Masashi Aoyagi, Yu Shimasaki, and Masafumi Yoshimura. "Awareness of fifth metatarsal stress fractures among soccer coaches in Japan: A cross-sectional study." PLOS ONE 19, no. 5 (May 14, 2024): e0277582. http://dx.doi.org/10.1371/journal.pone.0277582.
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Although a fifth metatarsal stress fracture is the most frequent stress fracture in soccer players, awareness of fifth metatarsal stress fractures among soccer coaches is unclear. Therefore, we performed an online survey of soccer coaches affiliated with the Japan Football Association to assess their awareness of fifth metatarsal stress fractures. A total of 150 soccer coaches were invited for an original online survey. Data on participants’ age, sex, types of coaching licence, coaching category, types of training surface, awareness of fifth metatarsal stress fractures, and measures employed to prevent fifth metatarsal stress fractures were collected using the survey. Data from 117 coaches were analysed. Eighty-seven of the 117 coaches were aware of fifth metatarsal stress fractures; however, only 30% reported awareness of preventive and treatment measures for fifth metatarsal stress fractures. Licensed coaches (i.e., licensed higher than level C) were also more likely to be aware of fifth metatarsal stress fractures than unlicensed coaches were. Furthermore, although playing on artificial turf is an established risk factor for numerous sports injuries, soccer coaches who usually trained on artificial turf were more likely to be unaware of the risks associated with fifth metatarsal stress fractures than coaches who trained on other surfaces were (e.g., clay fields). Soccer coaches in the study population were generally aware of fifth metatarsal stress fractures; however, most were unaware of specific treatment or preventive training strategies for fifth metatarsal stress fractures. Additionally, coaches who practised on artificial turf were not well educated on fifth metatarsal stress fractures. Our findings suggest the need for increased awareness of fifth metatarsal stress fractures and improved education of soccer coaches regarding injury prevention strategies.
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Ferreira, Ryan Henrique Xavier, Pedro Lucas da Silva, Vinícius Caputo Resende de Oliveira, Carlos Dias da Silva Junior, and Elias José de Rezende Freitas. "Initial development of IEEE Very Small Size Soccer robots: Electromechanics, Computer Vision System and Navigation Strategy." Journal of Engineering and Exact Sciences 9, no. 10 (December 30, 2023): 18148. http://dx.doi.org/10.18540/jcecvl9iss10pp18148.
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This paper presents the initial development of the IEEE Very Small Size Soccer (VSSS) robots, including the modeling and 3D printing of mechanical components, the integration of embedded electronics, a computer vision system, and the simulation of a navigation strategy. The proposed computer vision system can capture and process images during the VSSS match to provide the robots' and the ball's positions and velocities. From these odometry data, the proposed navigation strategy based on vector fields calculates commands to the robots, allowing different robot roles in the soccer match (striker, defender, and goalkeeper). This strategy, implemented in a simulator, is intuitive and has a low computational cost.
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Huang, Wenbin, Sailing He, Yaoran Sun, Julian Evans, Xian Song, Tongyu Geng, Guanrong Sun, and Xubo Fu. "Open Dataset Recorded by Single Cameras for Multi-Player Tracking in Soccer Scenarios." Applied Sciences 12, no. 15 (July 25, 2022): 7473. http://dx.doi.org/10.3390/app12157473.
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Multi-player action recognition for automatic analysis in sports is the subject of increasing attention. Trajectory-tracking technology is key for accurate recognition, but little research has focused on this aspect, especially for non-professional matches. Here, we study multi-player tracking in the most popular and complex sport among non-professionals—soccer. In this non-professional soccer player tracking (NPSPT) challenge, single-view-based motion recording systems for continuous data collection were installed in several soccer fields, and a new benchmark dataset was collected. The dataset consists of 17 2-min long super-high-resolution videos with diverse game types consistently labeled across time, covering almost all possible situations for multi-player detection and tracking in real games. A comprehensive evaluation was conducted on the state-of-the-art multi-object-Tracking (MOT) systems, revealing insights into player tracking in real games. Our challenge introduces a new dimension for researchers in the player recognition field and will be beneficial to further studies.
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Akpınar, Abdullah. "Green Exercise: How Are Characteristics of Urban Green Spaces Associated with Adolescents’ Physical Activity and Health?" International Journal of Environmental Research and Public Health 16, no. 21 (November 4, 2019): 4281. http://dx.doi.org/10.3390/ijerph16214281.
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This study investigates associations between characteristics of urban green spaces (UGSs) and adolescents’ self-reported green exercise (GE), general health, and body mass index (BMI). Data were collected through face-to-face personal interviews with 384 adolescents ages 13–19 between 1 March and 31 May, 2018 in UGSs in Aydın, Turkey. Multivariate regression analyses were conducted to examine associations controlling for confounding factors. Stratified analyses were also conducted to determine differences between boys and girls. Positive associations with the duration of GE included many trees, lawns, soccer fields and basketball courts, play equipment, and self-reported general health. Whereas increased BMI was associated with increased benches/ seating, lawns and exercise trails were positively associated with self-reported general health. Negative relationships with increased BMI included many trees, open areas, and outdoor fitness equipment. Increased distance from UGSs was negatively associated with the frequency of GE. In stratified analyses, positive associations between boys’ duration of GE and self-reported general health were found. Whereas soccer fields and basketball courts were associated with girls’ frequency of GE, exercise trails and play equipment were correlated with girls’ self-reported general health. Negative associations with the boys’ frequency of GE included increased BMI and screen time. Whereas increased distance from UGSs was negatively associated with girls’ frequency of GE, many trees, lawns, exercise trails, play equipment, open areas, flowerbeds, and outdoor fitness equipment were negatively correlated with girls’ increased BMI. Findings suggest that adolescents’ GE and health could be promoted with many trees, lawns, flowerbeds, open areas, play and outdoor fitness equipment, exercise trails, and soccer fields and basketball courts. Findings of this study should be tested with longitudinal or intervention studies in future research.
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Alipour Ataabadi, Yasamin, Heydar Sadeghi, Mohammad Hosein Alizadeh, and Mehdi Khaleghi. "Comparing Biomechanical Risk Factors of Anterior Cruciate Ligament Injury of Elite Female Soccer Players During the Shearing Maneuver and Header on the Natural Grass and Artificial Turf." Journal of Exercise Science and Medicine 11, no. 1 (January 1, 2020): 51–60. http://dx.doi.org/10.32598/jesm.11.1.7.
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Introduction: Nowadays, the use of artificial turf fields has become widespread. Given the high prevalence of noncontact injuries among female soccer players and high contribution of the Anterior Cruciate Ligament (ACL) injury, this research was conducted to compare biomechanical risk factors in the incidence of ACL injury for elite female soccer players during shearing maneuver and header on the natural grass and artificial turf fields. Methods: Sixteen players were selected from U-14 women’s national team by the convenience sampling method and started to perform the skills. Knee joint information was calculated by a 3D imaging system and a force plate. Statistical differences were reported using the dependent t-test at a significant level of 0.05. Results: The findings showed that the biomechanical behavior of the lower extremity while performing soccer skills on the natural grass was affected differently from that on the artificial turf. Results also demonstrated that the torque applied to the knee joint on the natural grass was higher than that on the artificial turf (P=0.039). Angular velocity on the artificial turf was also higher than that on the natural grass (P=0.006). Conclusion: The higher knee joint torque and the lower angular velocity on natural grass may result in a higher risk of ACL injury on the natural grass than on the artificial turf. Therefore, the use of prevention programs for ACL injury is crucial to minimize the incidence of lower extremity injuries.
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Shahab, Fatinah, Syarifah Zahra, and Aryu Candra. "The Relationship of Energy Adequacy with Nutritional Status of Soccer Athletes of Indonesian Soccer Association." Jurnal Kedokteran Diponegoro (Diponegoro Medical Journal) 13, no. 1 (January 22, 2024): 8–12. http://dx.doi.org/10.14710/dmj.v13i1.40173.
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Background: soccer is a sport that requires a high level of energy. The combination of training and adequate nutrition can make better sport performance. Nutritional status can determine the quality of athlete while competing and reducing the risk of illness and injury. Objective: This study aimed to determine the relationship between energy adequacy levels and the nutritional status of PSIS athletes. Methods: This correlational descriptive used a cross sectional design. Subjects were observed for a 2 months period. A total of 104 soccer athletes participated in thus study. The instrument of this research includes food recall and physical activity checklist for 3 x 24 hours, digital scale, Skinfold Caliper-Thickness and microtoise. Research variables include the level of energy adequacy, body mass index, and percent body fat. Results: The result showed that the energy adequacy level was 101 athletes (97.1%), normal nutritional status was 70 athletes (66.7%) and normal body fat percent was 71 (67.6%). The relationship between the level of energy adequacy and the percentage of body fat in PSIS athletes with a p-value of 0.56 (>0.05) and a correlation with an r value of 19%. The level of energy adequacy has a significant relationship with the percentage of body fat. Conclusion: it is recommended that dietary habit should be planned to improve the performance in sport fields.
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Kucera, Kristen L., Stephen W. Marshall, David R. Bell, Michael J. DiStefano, Candice P. Goerger, and Sakiko Oyama. "Validity of Soccer Injury Data from the National Collegiate Athletic Association's Injury Surveillance System." Journal of Athletic Training 46, no. 5 (September 1, 2011): 489–99. http://dx.doi.org/10.4085/1062-6050-46.5.489.
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Context: Few validation studies of sport injury-surveillance systems are available. Objective: To determine the validity of a Web-based system for surveillance of collegiate sport injuries, the Injury Surveillance System (ISS) of the National Collegiate Athletic Association's (NCAA). Design: Validation study comparing NCAA ISS data from 2 fall collegiate sports (men's and women's soccer) with other types of clinical records maintained by certified athletic trainers. Setting: A purposive sample of 15 NCAA colleges and universities that provided NCAA ISS data on both men's and women's soccer for at least 2 years during 2005–2007, stratified by playing division. Patients or Other Participants: A total of 737 men's and women's soccer athletes and 37 athletic trainers at these 15 institutions. Main Outcome Measure(s): The proportion of injuries captured by the NCAA ISS (capture rate) was estimated by comparing NCAA ISS data with the other clinical records on the same athletes maintained by the athletic trainers. We reviewed all athletic injury events resulting from participation in NCAA collegiate sports that resulted in 1 day or more of restricted activity in games or practices and necessitated medical care. A capture-recapture analysis estimated the proportion of injury events captured by the NCAA ISS. Agreement for key data fields was also measured. Results: We analyzed 664 injury events. The NCAA ISS captured 88.3% (95% confidence interval = 85.9%, 90.8%) of all time-lost medical-attention injury events. The proportion of injury events captured by the NCAA ISS was higher in Division I (93.8%) and Division II (89.6%) than in Division III (82.3%) schools. Agreement between the NCAA ISS data and the non–NCAA ISS data was good for the majority of data fields but low for date of full return and days lost from sport participation. Conclusions: The overall capture rate of the NCAA ISS was very good (88%) in men's and women's soccer for this period.
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Silva, Alexandre Augusto de Paula da, Edina Maria de Camargo, Alice Tatiane da Silva, Jeruza Sech Buck Silva, Adriano Akira Ferreira Hino, and Rodrigo Siqueira Reis. "CHARACTERIZATION OF PHYSICAL ACTIVITIES PERFORMED BY ADOLESCENTS FROM CURITIBA, BRAZIL." Revista Brasileira de Medicina do Esporte 25, no. 3 (June 2019): 211–15. http://dx.doi.org/10.1590/1517-869220192503188171.
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ABSTRACT Introduction Various studies have been developed and published in relation to the recommendations for physical activity and associated factors. However, there is a lack of studies that detail the places where physical activity is practiced, as well as its frequency, duration and volume. Objective To describe the places, types, frequency, duration and volume of physical activities performed by adolescents in Curitiba, Brazil. Methods A cross-sectional study conducted in 2013-2014, through a household survey with 495 adolescents (12 to 17 years). The places used, and the frequencies of the practice of physical activity were self-reported as either “goes” or “does not go.” The practice of physical activity was determined through the Physical Activity Questionnaire for Adolescents, by type, frequency, duration and weekly volume. The types of physical activity were described with frequency distribution, weekly frequency, duration, and volume, by the median and interquartile range. Gender comparison was tested with the Chi-square and Mann-Whitney U tests (p<0.05). Results The most frequently reported places for physical activity were public squares, parks, soccer fields, schools and sports halls. Soccer fields, schools, sports halls and skate parks were more used by boys, while girls attended gyms (p<0.05). The physical activities most practiced were soccer, skating/rollerblading, cycling, walking and active games. A higher proportion of boys practiced soccer, skating/rollerblading, cycling, running/jogging, and basketball (p<0.05), whereas the physical activities most practiced by girls were walking, walking the dog, dancing, playing games, and gyms (p<0.05). Sports (720 min/week), aerobic exercises (400 min/week) and conditioning exercises (345 min/week) were the activities with the highest weekly volume. Boys showed higher weekly frequency, duration and volume of practice of sports and active games than girls (p<0.05). Conclusion Public places with structures were the most used places, and sports were the most practiced activities. Level of Evidence III; Study of nonconsecutive patients; without consistently applied ‘‘gold’’ reference standard.
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Yu, Jun, and Zhi Yi Hu. "Design and Simulation of Soccer Robots and Field Scenarios." Applied Mechanics and Materials 220-223 (November 2012): 1162–65. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.1162.
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RoboCup is an international joint project to promote artificial intelligence, robotics and related fields. This paper presents a program that can draw and edit a drawing about soccer Robots and field scenarios. The program can load and save an image file, and draw 2D primitives in a painting area. These primitives can be set with different heights and tested by their compatibility with a new primitive. It also can undo/redo a drawing operation. There is a grid function to simplify the positioning of primitives. All the shapes in the drawing can be aligned appropriately. The result shows that the program can meet the basic requirement.
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Jeffries, Matthew D., Travis W. Gannon, James T. Brosnan, and Gregory K. Breeden. "Sprayer Setup Affects Dislodgeable 2,4-D Foliar Residue in Hybrid Bermudagrass Athletic Fields." Weed Technology 31, no. 2 (March 2017): 269–78. http://dx.doi.org/10.1017/wet.2016.22.
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2,4-dimethylamine salt (2,4-D) is a selective broadleaf herbicide commonly applied to turfgrass systems, including athletic fields, which can dislodge from treated vegetation. Building on previous research confirming 2,4-D dislodgeability is affected by management inputs, field research was initiated in 2014 and 2015 in North Carolina and Tennessee to quantify the effects of sprayer setup on dislodgeable 2,4-D foliar residue from hybrid bermudagrass, which is the most common athletic field playing surface in subtropical and tropical climates. More specifically, research evaluated dislodgeable 2,4-D foliar residue following spray applications (2.1 kg ae ha−1) at varying carrier volumes (187, 374, or 748 L ha−1) and nozzles delivering varying droplet sizes (fine=extended range [XR], coarse=drift guard, or extra coarse=air induction extended range [AIXR]). Overall, data suggest minimal 2,4-D dislodge occurs via soccer ball roll (3.6 m) outside the day of application; however, increasing carrier volume and droplet size can further decrease dislodgeable 2,4-D foliar residue. At 2 d after treatment (DAT), 3.87% of applied 2,4-D dislodged when applied at 187 L ha−1compared to 2.05% at 748 L ha−1. Pooled over data from 1 to 6 DAT, 1.59% of applied 2,4-D dislodged following XR nozzle application compared to 1.13% with AIXR nozzle. While these are small numerical differences, dislodgeable residue was measured via one soccer ball roll, which is a repeated process within the sport and the additive effect of sprayer setup treatments can be employed by turfgrass managers to reduce potential human 2,4-D human exposure.
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Makhafola, Masodi, Hendrick Makhubela, Sylven Masoga, and Sefora Hazel Makuse. "Fitness Soccer Athletes Training at the University of Limpopo, South Africa: Are the Macronutrients Intake and Anthropometric Status of These Athletes Optimal?" International Journal of Environmental Research and Public Health 19, no. 19 (October 3, 2022): 12650. http://dx.doi.org/10.3390/ijerph191912650.
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Background: Dietary practices of the University of Limpopo soccer team athletes have been reported. However, the practices of those engaging in soccer for general fitness from different non-competitive teams remain unknown. To respond to this gap, the researchers investigated the energy, macronutrient intake, and BMI status and further correlated the two variables of the fitness non-competitive soccer athletes registered at the University of Limpopo in South Africa. Method: A quantitative study design was undertaken to conveniently sample 60 out of 90 fitness soccer athletes from the four non-competitive soccer teams at the University of Limpopo sports grounds. Ethics approval was obtained from the University of Limpopo Research and Ethics Committee, and permission was given by the university sports management and team coaches. Athletes signed the informed consent form before participating in the study. Data were collected at the soccer fields during the afternoons before the start of training. Macronutrient intake data were collected using multiple (two) 24-h recall questionnaires on different days, which were validated by the food frequency questionnaire. Weight and height were measured using a digital scale (Seca 813 electronic flat scale) and stadiometer (Seca 213 portable stadiometer) for BMI calculations, respectively. The average energy and macronutrient intakes were calculated through the SAMRC FoodFinder software (3.0). The nutrient averages, together with the BMI results, were loaded into SPSS (26.0) for further analysis. Descriptive statistics were used to report the energy, macronutrient intake, and BMI statuses of athletes using percentages, means, and standard deviations (±SD). A one-way ANOVA test was used to determine the association between the latter variables. A p-value of ≤ 0.05 was the criterion used to correlate the variables. Results: All (100%) athletes were males, most of whom played soccer for 2–3 years while at the university. Almost half (48%) of athletes consumed energy (39.6 kcal/kg) below the recommendations. About 92% and 53% of athletes consumed carbohydrates (5.0 g/kg) and fat (1.2 g/kg) below the recommended values; while 43% consumed protein (1.4 g/kg) optimally. The majority (>80%) had a normal BMI (21.6 ± 2.6 kg/m2) status. However, there were no relationships between the energy (p = 0.383), CHO (p = 0.261), protein (p = 0.543), and fat (p = 0179) intake and the BMI status of athletes. Conclusion: The macronutrient intake of fitness soccer athletes at the University of Limpopo is, on the whole, suboptimal. However, the athletes had normal body weights. There was no association between both the energy and macronutrient intake and the anthropometric (BMI) status of soccer athletes.
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Hu, Ning, Shuhua Lin, and Jiayi Cai. "Real-Time Evaluation Algorithm of Human Body Movement in Football Training Robot." Mathematical Problems in Engineering 2021 (May 22, 2021): 1–9. http://dx.doi.org/10.1155/2021/9932737.
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As one of the most challenging topics in the field of artificial intelligence, soccer robots are currently an important platform for humanoid robotics research. Its fields cover a wide range of fields, including robotics, artificial intelligence, and automatic control. Kinematics analysis and action planning are the key technologies in the research of humanoid soccer robots and are the basis for realizing basic actions such as walking. This article mainly introduces the real-time evaluation algorithm of human motion in the football training robot. The football robot action evaluation algorithm proposed here designs the angle and wheel speed of the football robot movement through the evaluation of the angular velocity and linear velocity of the center of mass of the robot. The overall system of the imitation human football robot is studied, including the mechanical system design. The design of the leg structure, the decision-making system based on the finite state machine, the robot vision system, and the image segmentation technology are introduced. The experimental results in this article show that the action of the football training robot model is very stable, the static rotation movement time is about 220 ms, and the fixed-point movement error is less than 1 cm, which fully meets the accuracy requirements of the large-space football robot.
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Gür, Ercan, and Ilker Püren. "Acute Physiological Effects of Small-Sided Games Applied on the Hearing-Impaired National Team Soccer." Journal of Education and Training Studies 7, no. 3S (March 14, 2019): 22. http://dx.doi.org/10.11114/jets.v7i3s.4006.
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The purpose of this study is to determine whether there is a difference between physiological responses to the small-sided games often applied during soccer trainings by changing the dimensions of the fields, the number of players, duration and the rules of the games. 16 sports people, who play soccer in Turkey Hearing- Impaired National soccer Team, having 31, 38±6,02 of age, 177,13±4,38 cms of height, 74,22±4,44 kgs of bodily weight, volunteered for this research. The subjects were made to play free games with the intervals of 2 days, in different periods of 4x4, in the fields of 36mx24m, in 24 minutes in total in the forms of 1x24, 2x12, 4x6 and 6x4. After each game, a rest period of two days, and between the sets, a rest period of 4 minutes was given. Through anthropometric measurements of the subjects, their lactic acid levels in blood and the number of heart beats after small-sided games were determined. Also the difficulty levels perceived were determined with BORG scale. The data were transferred to IBM SPSS statistics 22 program and the analyses were completed. Friedman test was used to have a look whether there was a difference between descriptive statistics and dependent groups for continuous variables.At the end of the small-sided games applied in different periods and repetitions, a statistical meaningfulness was determined in the comparison of the speed of the heartbeat of the subjects that participated in the study(P<0.001). While a meaningfulness was determined in the comparison of the lactic acid amounts that appeared in the subjects (P<0.01); there was no statistical meaningfulness in the comparison of the perceived difficulty level of the small-sided games played.
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Devenin, Veronica, and Constanza Bianchi. "Soccer fields? What for? Effectiveness of corporate social responsibility initiatives in the mining industry." Corporate Social Responsibility and Environmental Management 25, no. 5 (April 17, 2018): 866–79. http://dx.doi.org/10.1002/csr.1503.
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Moraes-Partelli, Adriana Nunes, and Ivone Evangelista Cabral. "Images of alcohol in the adolescents’ life of one quilombola community." Revista Brasileira de Enfermagem 72, no. 2 (April 2019): 468–75. http://dx.doi.org/10.1590/0034-7167-2018-0264.
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ABSTRACT Objective: To analyze the images of alcohol in the rite of passage of adolescents of a quilombola community. Method: Qualitative and participatory study was developed by Creative and Sensitive Method, and guided by generated questions: “In my house, alcohol is...”; “Near my house, I see alcohol in...” Ten adolescents who live in a quilombola community in the north of the state of Espírito Santo, Brazil, participated in the group dynamics. The material was submitted to a thematic analysis. Results: Images of alcohol are common in the daily life of adolescents and can be seen in bars drinks, in their homes or in soccer fields; in different moments within the community (weekend barbecues, church celebrations, after soccer); and also in rites of passage, where adolescents first sipped or tasted alcohol with friends or socially with adults. Final Consideration: Alcohol in quilombola communities is cultural, and socially accepted, which turns it into a challenge for health professionals to promote health education with these adolescents.
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Schwebel, David C., D. Leann Long, and Leslie A. McClure. "Injuries on the Youth Soccer (Football) Field: Do Additional Referees Reduce Risk? Randomized Crossover Trial." Journal of Pediatric Psychology 45, no. 7 (July 11, 2020): 759–66. http://dx.doi.org/10.1093/jpepsy/jsaa050.
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Abstract Objective Youth soccer injury can be prevented through various means, but few studies consider the role of referees. Following previous research suggesting children take fewer risks when supervised intensely, this randomized crossover trial evaluated whether risky play and injuries decrease under supervision from three referees instead of one referee. Methods Youth soccer clubs serving a metropolitan U.S. area participated. Boys’ and girls’ clubs at under age 10 (U10) and under age 11 (U11) levels were randomly assigned such that when the same clubs played each other twice in the same season, they played once with one referee and once with three referees. A total of 98 games were videotaped and subsequently coded to obtain four outcomes: collisions between players, aggressive fouls (involving physical player-to-player contact) called by the referee(s) on the field, aggressive fouls judged by trained coders, and injuries requiring adult attention or play stoppage. Results Poisson mixed model results suggest players in the 98 games committed fewer aggressive fouls, as identified independently by referees (rate ratio [RR] 0.58; 95% confidence interval [CI] 0.35–0.96) and by researchers (RR 0.67; 95% CI 0.50–0.90), when there were three referees versus one referee. Collisions (RR 0.98; 95% CI 0.86–1.12) and injury rates (RR 1.15; 95% CI 0.60–2.19) were similar across conditions. Conclusion When the same youth soccer clubs played with three referees rather than one, they committed fewer aggressive fouls. More intense supervision created better rule adherence. Injury rates were unchanged with increased supervision. Results raise questions concerning whether financial investment in additional referees on youth soccer fields yields safety benefits.
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Tarigan, Herman, Ardian Cahyadi, and Joan Siswoyo. "Dribbling skills training model in football games for elementary school age." Journal of Education, Health and Sport 11, no. 8 (August 31, 2021): 405–11. http://dx.doi.org/10.12775/jehs.2021.11.08.045.
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The goal achieved from this research and development is to produce a model of soccer dribbling training models for the elementary school age group. This research and development is carried out to be able to obtain information about the development and application of the football dribbling training model for the elementary school level age group. and to find out the effectiveness of the model produced. This research uses Research & Development (R & D) method from Borg and Gall. The subjects in this study were students of SD Negeri 1 Metro Barat from 30 children. The stages in this study are: needs analysis, expert evaluation (initial product evaluation), small group trials, and large group trials (testing fields). Test the effectiveness of the model. With the success of the research proven by questionnaires submitted by experts at 80%, the dribbling training model deserves to be developed in accordance with the research study of the development model of Borg and Gall. Based on the results of the development it can be concluded that: (1) With the soccer dribbling training model for elementary school level children can be developed and applied in dribbling exercises on extracurricular and learning (2) With the soccer dribbling training model for elementary school level that has been developed, there is evidence of an increase of which there are significant differences between before and after getting the model treatment.
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STICKLER, GUNNAR B. "Vietnamese Are Not Genetically Short." Pediatrics 76, no. 6 (December 1, 1985): 1024. http://dx.doi.org/10.1542/peds.76.6.1024b.
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In Reply.— Dr Deinard's opinion about the growth pattern of children from Southeast Asia is of interest and hopefully will hold up. Just looking around the Rochester soccer fields, this is doubtful. His opinion is in contrast to that repeatedly misquoted information about the Japanese who migrated to California. It is true that earlier studies showed better growth in California in comparison to those Japanese born in Japan, but this did not prove to be true with remeasurements in 1971.
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Baller, Susann. "Transforming urban landscapes: soccer fields as sites of urban sociability in the agglomeration of Dakar." African Identities 5, no. 2 (August 2007): 217–30. http://dx.doi.org/10.1080/14725840701403473.
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Kutovaya, O. V., I. V. Zamotaev, and V. P. Belobrov. "Communities of microorganisms and invertebrates in soil-like bodies of soccer fields in Moscow oblast." Eurasian Soil Science 47, no. 11 (November 2014): 1107–15. http://dx.doi.org/10.1134/s1064229314110052.
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Xiong, Dan, Junhao Xiao, Huimin Lu, Zhiwen Zeng, Qinghua Yu, Kaihong Huang, Xiaodong Yi, and Zhiqiang Zheng. "The design of an intelligent soccer-playing robot." Industrial Robot: An International Journal 43, no. 1 (January 18, 2016): 91–102. http://dx.doi.org/10.1108/ir-05-2015-0092.
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Purpose – The purpose of this paper is to design intelligent robots operating in such dynamic environments like the RoboCup Middle-Size League (MSL). In the RoboCup MSL, two teams of five autonomous robots play on an 18- × 12-m field. Equipped with sensors and on-board computers, each robot should be able to perceive the environment, make decision and control itself to play the soccer game autonomously. Design/methodology/approach – This paper presents the design of our soccer robots, participating in RoboCup MSL. The mechanical platform, electrical architecture and software framework are discussed separately. The mechanical platform is designed modularly, so easy maintainability is achieved; the electronic architecture is built on industrial standards using PC-based control technique, which results in high robustness and reliability during the intensive and fierce MSL games; the software is developed upon the open-source Robot Operating System (ROS); thus, the advantages of ROS such as modularity, portability and expansibility are inherited. Findings – Based on this paper and the open-source hardware and software, the MSL robots can be re-developed easily to participate in the RoboCup MSL. The robots can also be used in other research and education fields, especially for multi-robot systems and distributed artificial intelligence. Furthermore, the main designing ideas proposed in the paper, i.e. using a modular mechanical structure, an industrial electronic system and ROS-based software, provide a common solution for designing general intelligent robots. Originality/value – The methodology of the intelligent robot design for highly competitive and dynamic RoboCup MSL environments is proposed.
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Prieto-Mondragón, Laura Del Pilar, Diana Alexandra Camargo-Rojas, and Christian Alexander Quinceno. "Isoinertial technology for rehabilitation and prevention of muscle injuries of soccer players: literature review." Revista de la Facultad de Medicina 64, no. 3 (July 1, 2016): 543. http://dx.doi.org/10.15446/revfacmed.v64n3.47701.
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Introduction: Soccer is the sport with the highest risk of muscle injury for players. Eccentric exercise is fundamental for reducing injury rates and isoinertial technology devices cause an increase in eccentric demands after a concentric contraction.Objective: To identify the use of isoinertial technology in the fields of physical activity and sports for rehabilitation and prevention of muscle injuries reported in scientific literature.Materials and methods: A search of scientific papers in PubMed, Google Scholar, EMBASE and Science Direct data base was performed by using the following MeSH medical terms and search equations: [isoinertial AND technology AND flywheels] and [free weight AND sport AND humans AND soccer].Results: 23 references, classified into three approaches, were selected: isoinertial technology for rehabilitation, fitness and injury prevention. The use of this technology is fundamental due to the increase of the eccentric demand in muscle groups.Conclusions: Isoinertial technology is a useful tool for treating and preventing injuries, as well as for the development of physical qualities. However, it is necessary to work on protocols that allow unifying its usage parameters so that it can be included in prevention programs.
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Beese, Mark E., Elizabeth Joy, Craig L. Switzler, and Charlie A. Hicks-Little. "Landing Error Scoring System Differences Between Single-Sport and Multi-Sport Female High School–Aged Athletes." Journal of Athletic Training 50, no. 8 (August 1, 2015): 806–11. http://dx.doi.org/10.4085/1062-6050-50.7.01.
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Context Single-sport specialization (SSS) is becoming more prevalent in youth athletes. Deficits in functional movement have been shown to predispose athletes to injury. It is unclear whether a link exists between SSS and the development of functional movement deficits that predispose SSS athletes to an increased risk of knee injury. Objective To determine whether functional movement deficits exist in SSS athletes compared with multi-sport (M-S) athletes. Design Cross-sectional study. Setting Soccer practice fields. Patients or Other Participants A total of 40 (21 SSS [age = 15.05 ± 1.2 years], 19 M-S [age = 15.32 ± 1.2 years]) female high school athlete volunteers were recruited through local soccer clubs. All SSS athletes played soccer. Intervention(s) Participants were grouped into 2 categories: SSS and M-S. All participants completed 3 trials of the standard Landing Error Scoring System (LESS) jump-landing task. They performed a double-legged jump from a 30-cm platform, landing on a rubber mat at a distance of half their body height. Upon landing, participants immediately performed a maximal vertical jump. Main Outcome Measure(s) Values were assigned to each trial using the LESS scoring criteria. We averaged the 3 scored trials and then used a Mann-Whitney U test to test for differences between groups. Participant scores from the jump-landing assessment for each group were also placed into the 4 defined LESS categories for group comparison using a Pearson χ2 test. The α level was set a priori at .05. Results Mean scores were 6.84 ± 1.81 for the SSS group and 6.07 ± 1.93 for the M-S group. We observed no differences between groups (z = −1.44, P = .15). A Pearson χ2 analysis revealed that the proportions of athletes classified as having excellent, good, moderate, or poor LESS scores were not different between the SSS and M-S groups ( = 1.999, P = .57). Conclusions Participation in soccer alone compared with multiple sports did not affect LESS scores in adolescent female soccer players. However, the LESS scores indicated that most female adolescent athletes may be at an increased risk for knee injury, regardless of the number of sports played.
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Shahin, Sabina. "Sports Data Analysis by using Bivariate Poisson Models in the Bayesian Framework." Volume 21, Issue 1 21, no. 1 (June 30, 2023): 7–15. http://dx.doi.org/10.52584/qrj.2101.02.
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Bivariate distribution models are commonly used to analyze sports data and data from various fields. These models are used to analyze discrete count data with two dependent variables in the data. In this research article, we have used Bivariate Poisson and Diagonally Inflated Bivariate Poisson regression models. We have proposed an estimation procedure in the Bayesian framework in conjunction with the augmentation of data. For parameter estimation, we use Gaussian priors and beta priors for both models. To illustrate the fitting performances of our suggested models we have performed real data analysis on English Premier League soccer data.
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Silva, Diogo C. F., Rubim Santos, João Paulo Vilas-Boas, Rui Macedo, António Mesquita Montes, and Andreia S. P. Sousa. "Influence of Cleats-Surface Interaction on the Performance and Risk of Injury in Soccer: A Systematic Review." Applied Bionics and Biomechanics 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/1305479.
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Objective. To review the influence of cleats-surface interaction on the performance and risk of injury in soccer athletes. Design. Systematic review. Data Sources. Scopus, Web of science, PubMed, and B-on. Eligibility Criteria. Full experimental and original papers, written in English that studied the influence of soccer cleats on sports performance and injury risk in artificial or natural grass. Results. Twenty-three articles were included in this review: nine related to performance and fourteen to injury risk. On artificial grass, the soft ground model on dry and wet conditions and the turf model in wet conditions are related to worse performance. Compared to rounded studs, bladed ones improve performance during changes of directions in both natural and synthetic grass. Cleat models presenting better traction on the stance leg improve ball velocity while those presenting a homogeneous pressure across the foot promote better kicking accuracy. Bladed studs can be considered less secure by increasing plantar pressure on lateral border. The turf model decrease peak plantar pressure compared to other studded models. Conclusion. The soft ground model provides lower performance especially on artificial grass, while the turf model provides a high protective effect in both fields.
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Kérivel, Thibault, Cyril Bossard, and Gilles Kermarrec. "Team learning process: a longitudinal study in dynamic situation." Learning Organization 29, no. 1 (October 20, 2021): 52–68. http://dx.doi.org/10.1108/tlo-09-2020-0177.
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Purpose This paper aims to explore team learning processes used by soccer players in a professional training context by focusing on their identification and evolution for 22 months. Design/methodology/approach A soccer team from a professional academy participated to this study based on six training sessions. Qualitative data on training sessions were collected. Data analysis followed four steps: reporting the game timeline and behaviours connected to each situation; coding verbal data by delineating meaningful units of activity; classifying meaningful units of activity according to team learning processes derived from previous studies; and providing a temporal graph representing occurrences of team learning processes at each training session. Findings Results showed that soccer players used 13 team learning processes during training sessions. Two processes are mainly mobilized to visualize the situation and to plan. A temporal graph was edited to represent processes evolve over training sessions. The latter illustrated a stability in team learning processes mobilization during the 22 months follow-up. Research limitations/implications This study complete knowledges about team learning by providing a fine-grained understanding of how players learn in teams and how team learning processes evolve over time. Practical implications This paper can help practitioners who manage teams in high temporal pressure situations to design adapted training programs. Originality/value This exploratory study highlights that the team learning processes usually mobilized “off-field” could also be used by team members in high temporal pressure situations, “on-field”. This study offers an original longitudinal approach that fits with some recent calls for contribution about team activity and could benefit to other research fields.
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Wang, Bin. "Teaching Model of Soccer Training Based on Virtual Simulation Technology." Journal of Electrical Systems 20, no. 3s (April 4, 2024): 610–19. http://dx.doi.org/10.52783/jes.1338.
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Virtual simulation technology, a cornerstone of modern innovation, revolutionizes the way we interact with virtual environments, offering immersive experiences across various fields. By leveraging computer-generated simulations, this technology replicates real-world scenarios, enabling users to engage in lifelike experiences without physical constraints. From training simulations for professionals in healthcare, aviation, and military sectors to virtual reality gaming and architectural visualization, virtual simulation technology transcends traditional boundaries, fostering experiential learning and enhancing decision-making processes. Its applications extend to education, where students can explore complex concepts in science, history, and art through interactive simulations, promoting active learning and knowledge retention. As technology continues to evolve, virtual simulation remains at the forefront, continually pushing the boundaries of what is possible in immersive experiences. This paper presents a novel teaching model for soccer training, leveraging virtual simulation technology augmented by Hierarchical Training Feature Co-ordinates Recurrent Network (HTF-RN). The proposed model aims to enhance the effectiveness and efficiency of soccer training programs by providing immersive and interactive experiences in virtual environments. Through simulated experiments and empirical validations, the efficacy of the HTF-RN-enhanced virtual simulation teaching model is evaluated. Results demonstrate significant improvements in player performance, tactical understanding, and decision-making abilities compared to traditional training methods. For instance, players trained using the HTF-RN model exhibited a 25% increase in goal-scoring accuracy and a 30% improvement in passing precision. Additionally, the model enabled coaches to customize training sessions based on individual player strengths and weaknesses, leading to more targeted and impactful training interventions. These findings underscore the potential of virtual simulation technology with HTF-RN in revolutionizing soccer training methodologies, paving the way for more effective player development and performance enhancement.
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Fu, Xubo, Wenbin Huang, Yaoran Sun, Xinhua Zhu, Julian Evans, Xian Song, Tongyu Geng, and Sailing He. "A Novel Dataset for Multi-View Multi-Player Tracking in Soccer Scenarios." Applied Sciences 13, no. 9 (April 25, 2023): 5361. http://dx.doi.org/10.3390/app13095361.
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Localization and tracking in multi-player sports present significant challenges, particularly in wide and crowded scenes where severe occlusions can occur. Traditional solutions relying on a single camera are limited in their ability to accurately identify players and may result in ambiguous detection. To overcome these challenges, we proposed fusing information from multiple cameras positioned around the field to improve positioning accuracy and eliminate occlusion effects. Specifically, we focused on soccer, a popular and representative multi-player sport, and developed a multi-view recording system based on a 1+N strategy. This system enabled us to construct a new benchmark dataset and continuously collect data from several sports fields. The dataset includes 17 sets of densely annotated multi-view videos, each lasting 2 min, as well as 1100+ min multi-view videos. It encompasses a wide range of game types and nearly all scenarios that could arise during real game tracking. Finally, we conducted a thorough assessment of four multi-view multi-object tracking (MVMOT) methods and gained valuable insights into the tracking process in actual games.
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Powers, Christopher M., Navid Ghoddosi, Rachel K. Straub, and Khalil Khayambashi. "Hip Strength as a Predictor of Ankle Sprains in Male Soccer Players: A Prospective Study." Journal of Athletic Training 52, no. 11 (November 1, 2017): 1048–55. http://dx.doi.org/10.4085/1062-6050-52.11.18.
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Context: Diminished hip-abductor strength has been suggested to increase the risk of noncontact lateral ankle sprains. Objective: To determine prospectively whether baseline hip-abductor strength predicts future noncontact lateral ankle sprains in competitive male soccer players. Design: Prospective cohort study. Setting: Athletic training facilities and various athletic fields. Patients or Other Participants: Two hundred ten competitive male soccer players. Main Outcome Measure(s): Before the start of the sport season, isometric hip-abductor strength was measured bilaterally using a handheld dynamometer. Any previous history of ankle sprain, body mass index, age, height, and weight were documented. During the sport season (30 weeks), ankle injury status was recorded by team medical providers. Injured athletes were further classified based on the mechanism of injury. Only data from injured athletes who sustained noncontact lateral ankle sprains were used for analysis. Postseason, logistic regression was used to determine whether baseline hip strength predicted future noncontact lateral ankle sprains. A receiver operating characteristic curve was constructed for hip strength to determine the cutoff value for distinguishing between high-risk and low-risk outcomes. Results: A total of 25 noncontact lateral ankle sprains were confirmed, for an overall annual incidence of 11.9%. Baseline hip-abductor strength was lower in injured players than in uninjured players (P = .008). Logistic regression indicated that impaired hip-abductor strength increased the future injury risk (odds ratio = 1.10 [95% confidence interval = 1.02, 1.18], P = .010). The strength cutoff to define high risk was ≤33.8% body weight, as determined by receiver operating characteristic curve analysis. For athletes classified as high risk, the probability of injury increased from 11.9% to 26.7%. Conclusions: Reduced isometric hip-abductor strength predisposed competitive male soccer players to noncontact lateral ankle sprains.
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Halpern, Brian, Nancy Thompson, Walton W. Curl, James R. Andrews, Stephen C. Hunter, and John R. Boring. "High School Football Injuries: Identifying the Risk Factors." American Journal of Sports Medicine 16, no. 1_suppl (January 1988): S—113—S—117. http://dx.doi.org/10.1177/03635465880160s122.
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This epidemiologic survey of the literature on the factors contributing to the high number of high school football injuries consolidates the current information on the characteristics and risk factors associated with these injuries. To reduce the incidence of knee sprains and strains, the most common injuries to this population, the following preventive recommendations are presented: 1) optimum maintenance of playing fields; 2) use of the soccer-style shoe; 3) noncontact and controlled activities in practice sessions; and 4) increased vigilance over technique during injury-prone preseason practices. The authors conclude that more research into factors such as exposure time and activity at injury will further reduce the risk to the high school football player.
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Todeva, Elka. "Language Development Research, Teaching, and Learning: A Cross-field Perspective." Language Teaching Research Quarterly 39 (December 2023): 344–58. http://dx.doi.org/10.32038/ltrq.2024.39.21.
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This reflective piece seeks to shed light on the numerous contributions of Diane Larsen-Freeman to theory construction, applied linguistics, and language education by drawing parallels and insights from the FIFA 2022 Qatar World Cup Final. Looking at the multitude of factors that affect both soccer games and language development research, teaching, and learning, the article explores some of her key publications, chosen for their invitation to us to consider expansive holistic changes that both our research and our language education enterprise badly need. My aim has been to capture some prominent aspects of Diane’s unique gifts as a researcher, mentor, thinker, and educator, revealing her lifelong dedication to all these areas and to various fields of language study.
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Oki, Takuro, Ryusuke Miyamoto, Hiroyuki Yomo, and Shinsuke Hara. "Detection Accuracy of Soccer Players in Aerial Images Captured from Several Viewpoints." Journal of Functional Morphology and Kinesiology 4, no. 1 (January 21, 2019): 9. http://dx.doi.org/10.3390/jfmk4010009.
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In the fields of professional and amateur sports, players’ health, physical and physiological conditions during exercise should be properly monitored and managed. The authors of this paper previously proposed a real-time vital-sign monitoring system for players using a wireless multi-hop sensor network that transmits their vital data. However, existing routing schemes based on the received signal strength indicator or global positioning system do not work well, because of the high speeds and the density of sensor nodes attached to players. To solve this problem, we proposed a novel scheme, image-assisted routing (IAR), which estimates the locations of sensor nodes using images captured from cameras mounted on unmanned aerial vehicles. However, it is not clear where the best viewpoints are for aerial player detection. In this study, the authors investigated detection accuracy from several viewpoints using an aerial-image dataset generated with computer graphics. Experimental results show that the detection accuracy was best when the viewpoints were slightly distant from just above the center of the field. In the best case, the detection accuracy was very good: 0.005524 miss rate at 0.01 false positive-per-image. These results are informative for player detection using aerial images and can facilitate to realize IAR.
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Grannemann, Hannah, and Amy Whitaker. "Artists’ Royalties and Performers’ Equity: A Ground-Up Approach to Social Impact Investment in Creative Fields." Cultural Management: Science and Education 3, no. 2 (December 16, 2019): 33–52. http://dx.doi.org/10.30819/cmse.3-2.02.
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In this paper we argue that new models of artists’ royalties and performers’ equity can form the basis of social impact funds in the arts. Following the principle that those who contribute value should own part of it, we model social impact funds using a “value creation” lens, starting with royalties, profit shares, and other rights granted to visual artists, performers, and playwrights (referred to collectively as “artists”). We draw on data from DACS, the United Kingdom manager of the Artist Resale Right (ARR) and copyright licensing, as well as Arts Council England. We build on case studies of the Artist Pension Trust and Olav Velthuis’ suggestion of applying football (soccer) transfer fees to the arts, in order to argue for an artist-centric view of sustainable investing in the culture sector. This proposal complements cultural impact investing funds started by LISC and Upstart Co-Lab while creating more diversifiable, flexible, and artist-centric systems to address problems of risk and diversification of early-stage investment in creative work.
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Akkurt, Soner, Serdar Sucan, Alper Gumus, Mehmet Karakus, Ahmet Yilmaz, and Tolga Saka. "Comparison of Muscle Damage in Turkish Collegian Soccer Players after Playing Matches on Artificial and Natural Turf Fields." Anthropologist 20, no. 3 (June 2015): 423–29. http://dx.doi.org/10.1080/09720073.2015.11891745.
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Howard, Mark, Hyunwoo Paco Kang, Samantha Solaru, Alexander E. Weber, and Mark F. Rick C. "The Effect Of Playing Surface On Anterior Cruciate Ligament Injury In NCAA Soccer." Orthopaedic Journal of Sports Medicine 8, no. 3_suppl2 (March 1, 2020): 2325967120S0012. http://dx.doi.org/10.1177/2325967120s00125.
Full textAbstract:
Objectives: Previous orthopaedic literature has examined the effect of synthetic playing surfaces on the risk of anterior cruciate ligament (ACL) injury in athletes and produced varying and inconclusive results. The objective of this study was to examine the role of playing surface on the incidence and risk of ACL injury in collegiate soccer athletes. Methods: The NCAA Injury Surveillance Program (ISP) database was queried for ACL injuries for male and female soccer players from the 2004-05 through the 2013-14 seasons at all levels of competition. The number of athlete exposures (AEs), defined as 1 athlete participating in 1 practice or competition in which they were exposed to the possibility of athletic injury, were recorded for grass and synthetic playing surfaces. Both the reported injuries and exposures provided were weighted in order to represent the entire NCAA collegiate soccer population. Normalized ACL incidence rates were calculated as well as 95% confidence intervals (95%CI). Rate ratios comparing competition type amongst both competition and practice were calculated. Results: ACL injuries were more common on grass surfaces (1.16 per 10,000 AEs, 95%CI 1.12-1.20) than artificial turf (0.92 per 10,000 AEs, 95%CI 0.84-1.04). This difference was statistically significant (IRR 1.26, p<0.0001), and driven primarily by the difference in injury incidence during practice. The injury incidence during practice on natural grass (1.18 per 10,000 AEs, 95% CI 1.11-1.26) was significantly greater than the injury incidence rate during practice on artificial turf (0.067 per 10,000 AEs, 95%CI 0.043-0.096). Players were 17.7 times more likely (95%CI 10.6678-27.2187, p<0.0001) to sustain an ACL injury during practice on natural grass when compared to practice on artificial turf. However, there was no significant difference in injury incidence during matches (IRR 0.96, p=0.44), with matches on natural grass (3.35 per 10,000 AEs, 95% CI 3.21-3.51) equivalent to matches on artificial surfaces (3.49 per 10,000 AEs, 95%CI 3.18-3.81). When comparing exposure type, the injury rate was significantly greater during matches (3.38 per 10,000 AEs, 95% CI 3.25-3.52) compared to practices (0.82 per 10,000 AEs, 95%CI 0.77-0.88), with a 4.10-fold increase in ACL injury incidence during matches compared to practice (p<0.0001). Conclusion: Between 2004 and 2014, NCAA soccer players experienced a greater number of ACL injuries on natural grass playing surfaces compared with artificial turf playing surfaces. This difference is driven by injuries during practice, where athletes were nearly 18 times more likely to suffer an ACL injury on grass versus artificial turf. While ACL injuries were more likely during matches compared to practices, no difference in incidence was noted between playing surfaces. Additional study is warranted investigating potential causes for this observed increased risk with soccer practice on grass fields.