Letteratura scientifica selezionata sul tema "Football players – Recruiting – United States"
Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili
Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Football players – Recruiting – United States".
Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.
Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.
Articoli di riviste sul tema "Football players – Recruiting – United States"
1
Al Ardha, Muchamad Arif, Nurhasan, Rizky Muhammad Sidik, Dan O'Donnell, Matt Hunter, Sujarwanto, David Agus Prianto, I. Dewa Made Aryananda Wijaya Kusuma, Sauqi Sawa Bikalawan e Kukuh Pambuka Putra. "Research Trends in Football Training for Young Players in the Last 15 Years: Bibliographic Analysis". Physical Education Theory and Methodology 23, n. 6 (22 dicembre 2023): 963–74. http://dx.doi.org/10.17309/tmfv.2023.6.20.
Testo completoAbstract (sommario):
The objective of this paper is to evaluate the research trends in football training for young players under 18 years old in the last 15 years. Materials and methods. This was a bibliometric analysis and systematic review study. Articles published since 2008 were searched for by the keywords “Football Training” and “Football Exercise” using a comprehensive strategy on SCOPUS research journal databases. There were 1,053 articles with 4802 citations mined on October 17th, 2023. Thereafter, 217 articles were selected for further analysis by using VOS Viewer computer software. Results. The United Kingdom (67), The United States (60), and Spain (41) were the three countries that had the most publications in football training. There were 6 keyword clusters that reflected various research focuses on football training for younger players. Based on the top 10 most cited references in football training for younger players, there were several major themes that covered various aspects of the research trend and development in the last 15 years, i.e. (1) Factors in the Development of Young Football Players, (2) Tactical Analysis and Collective Behavior in Small-Sided Games, (3) Game Intensity and Activity Profile in Young Football Players, (4) Plyometric Training and Its Effects on Preadolescent Players, and (5) Injury Prevention and Neuromuscular Training in Adolescent Football Players. Conclusions. Football research for under-18 players has grown rapidly. This research trend shows that football requires not only physical and technical skills, but also social and mental aspects. Further research can be directed toward understanding and integrating holistic aspects of football coaching, including the development of non-physical skills, such as leadership, teamwork, and conflict resolution. Further investigation into the use of technology in football coaching, such as video analysis, sensor-based performance measurement, and artificial intelligence applications to provide deeper insight into player progress.
2
Munk, Dana, Ramona Cox, Martha E. Ewing e Peggy McCann. "Negative Societal Reactions to Women Professional Football Athletes in the United States". Women in Sport and Physical Activity Journal 22, n. 2 (ottobre 2014): 100–106. http://dx.doi.org/10.1123/wspaj.2014-0006.
Testo completoAbstract (sommario):
There has been quite a surge of women’s professional football teams in the United States; however, football is rarely offered for girls at the youth sport, middle school, high school, or intercollegiate levels. While this lack of participation can be easily attributed to the contact sport exemption clause in Title IX, researchers have shown that litigation has changed the course for women by legally opening doors for opportunities in tackle football. Today, it is more likely the lack of opportunities for females in traditional male sports is because of stereotypical beliefs linked to their gender. Using qualitative methodology, researchers in this study explored stereotypical, discrepant, societal messages encountered by current professional female football players. Findings suggested societal reactions were linked to stereotypical beliefs about women in sports and included a lack of social support, discriminatory messages, and skepticism over girl’s ability to play contact sports. Implications for further study also emerged.
3
Pitts, Joshua D., e Jon Paul Rezek. "Athletic Scholarships in Intercollegiate Football". Journal of Sports Economics 13, n. 5 (18 maggio 2011): 515–35. http://dx.doi.org/10.1177/1527002511409239.
Testo completoAbstract (sommario):
Despite the financial and cultural importance of intercollegiate athletics in the United States, there is a paucity of research into how athletic scholarships are awarded. In this article, the authors empirically examine the factors that universities use in their decision to offer athletic scholarships to high school football players. Using a Zero-Inflated Negative Binomial (ZINB) model, the authors find a player’s weight, height, body mass index (BMI), race, speed, on-the-field performance, and his high school team’s success often have large and significant impacts on the number of scholarship offers he receives. There is also evidence of a negative relationship between academic performance and scholarship offers. In addition, the authors find evidence of a scholarship premium for players from Florida and Texas. The results also show that running backs, wide receivers, and defensive backs appear to generate the most attention from college football coaches, other things equal.
4
Bellamkonda, Srinidhi, Samantha J. Woodward, Eamon Campolettano, Ryan Gellner, Mireille E. Kelley, Derek A. Jones, Amaris Genemaras et al. "Head Impact Exposure in Practices Correlates With Exposure in Games for Youth Football Players". Journal of Applied Biomechanics 34, n. 5 (1 ottobre 2018): 354–60. http://dx.doi.org/10.1123/jab.2017-0207.
Testo completoAbstract (sommario):
This study aimed to compare head impact exposures between practices and games in football players ages 9 to 14 years, who account for approximately 70% of all football players in the United States. Over a period of 2 seasons, 136 players were enrolled from 3 youth programs, and 49,847 head impacts were recorded from 345 practices and 137 games. During the study, individual players sustained a median of 211 impacts per season, with a maximum of 1226 impacts. Players sustained 50th (95th) percentile peak linear acceleration of 18.3 (46.9) g, peak rotational acceleration of 1305.4 (3316.6) rad·s−2, and Head Impact Technology Severity Profile of 13.7 (24.3), respectively. Overall, players with a higher frequency of head impacts at practices recorded a higher frequency of head impacts at games (P < .001,r2 = .52), and players who sustained a greater average magnitude of head impacts during practice also recorded a greater average magnitude of head impacts during games (P < .001). The youth football head impact data quantified in this study provide valuable insight into the player exposure profile, which should serve as a key baseline in efforts to reduce injury.
5
Iguchi, Junta, Yosuke Yamada, Misaka Kimura, Yoshihiko Fujisawa, Tatsuya Hojo, Kenji Kuzuhara e Noriaki Ichihashi. "Injuries in a Japanese Division I Collegiate American Football Team: A 3-Season Prospective Study". Journal of Athletic Training 48, n. 6 (1 dicembre 2013): 818–25. http://dx.doi.org/10.4085/1062-6050-48.4.15.
Testo completoAbstract (sommario):
Context: Previous research on American football injuries in Japan has focused on incidence proportion in terms of the number of injuries divided by the number of players. This is the first study to examine injury rates over several seasons. Objective: To conduct a prospective study of injuries in a Japanese Division I collegiate American football team over the 2007 through 2009 seasons. Design: Cohort study. Setting: Collegiate football team at Doshisha University, Kyoto, Japan. Patients or Other Participants: All 289 athletes who played on the collegiate Division I football team during the 2007 through 2009 seasons. Main Outcome Measure(s): A certified athletic trainer kept a daily record of all practice and game injuries. Injury rates were calculated according to season, injury type, body part, severity, and mechanism. Injuries were also analyzed according to position of player, school year, and playing experience. Results: The game injury rate (GIR; 32.7 injuries/1000 athlete-exposures) was higher than the practice injury rate (PIR; 10.9 injuries/1000 athlete-exposures) over the 3 seasons (P < .05). The PIR was higher among Japanese players than the comparable United States collegiate football injury rates (5.8–7.0 injuries/1000 athlete-exposures). Ankle and foot injuries occurred more frequently during games, whereas thigh and gluteal injuries occurred more frequently during practices. Conclusions: Our data show differences between games and practices in terms of injury rates, body parts injured, and positions of players injured. The high PIR in Japan may be due to the increased contact during practices and length of practices compared with the United States. Further research involving multiple teams is recommended to validate the trends noted in this study. The expanded data set could assist in the development of safety regulations and preventive interventions for Japanese football.
6
Carter, Elizabeth A., Beverly J. Westerman e Katherine L. Hunting. "Risk of Injury in Basketball, Football, and Soccer Players, Ages 15 Years and Older, 2003–2007". Journal of Athletic Training 46, n. 5 (1 settembre 2011): 484–88. http://dx.doi.org/10.4085/1062-6050-46.5.484.
Testo completoAbstract (sommario):
Context: A major challenge in the field of sports injury epidemiology is identifying the appropriate denominators for injury rates. Objective: To characterize risk of injury from participation in basketball, football, and soccer in the United States, using hours of participation as the measure of exposure, and to compare these rates with those derived using population estimates in the denominator. Design: Descriptive epidemiology study. Setting: United States, 2003–2007. Participants: People ages 15 years and older who experienced an emergency department–treated injury while playing basketball, football, or soccer. Main Outcome Measure(s): Rates of emergency department–treated injuries resulting from participation in basketball, football, or soccer. Injury rates were calculated for people ages 15 and older for the years 2003–2007 using the U.S. population and hours of participation as the denominators. The risk of injury associated with each of these sports was compared for all participants and by sex. Results: From 2003 through 2007, annual injury rates per 1000 U.S. population were as follows: 1.49 (95% confidence interval [CI] = 1.30, 1.67) in basketball, 0.93 (95% CI = 0.82, 1.04) in football, and 0.43 (95% CI = 0.33, 0.53) in soccer. When the denominator was hours of participation, the injury rate in football (5.08 [95% CI = 4.46, 5.69]/10 000 hours) was almost twice as high as that for basketball (2.69 [95% CI = 2.35, 3.02]/10 000 hours) and soccer (2.69 [95% CI = 2.07, 3.30]/10 000 hours). Conclusions: Depending on the choice of denominator, interpretation of the risk of an emergency department–treated injury in basketball, football, or soccer varies greatly. Using the U.S. population as the denominator produced rates that were highest in basketball and lowest in soccer. However, using hours of participation as a more accurate measure of exposure demonstrated that football had a higher rate of injury than basketball or soccer for both males and females.
7
Newman, Jacob, Andrew Sumsion, Shad Torrie e Dah-Jye Lee. "Automated Pre-Play Analysis of American Football Formations Using Deep Learning". Electronics 12, n. 3 (1 febbraio 2023): 726. http://dx.doi.org/10.3390/electronics12030726.
Testo completoAbstract (sommario):
Annotation and analysis of sports videos is a time-consuming task that, once automated, will provide benefits to coaches, players, and spectators. American football, as the most watched sport in the United States, could especially benefit from this automation. Manual annotation and analysis of recorded videos of American football games is an inefficient and tedious process. Currently, most college football programs focus on annotating offensive formations to help them develop game plans for their upcoming games. As a first step to further research for this unique application, we use computer vision and deep learning to analyze an overhead image of a football play immediately before the play begins. This analysis consists of locating individual football players and labeling their position or roles, as well as identifying the formation of the offensive team. We obtain greater than 90% accuracy on both player detection and labeling, and 84.8% accuracy on formation identification. These results prove the feasibility of building a complete American football strategy analysis system using artificial intelligence. Collecting a larger dataset in real-world situations will enable further improvements. This would likewise enable American football teams to analyze game footage quickly.
8
Lens, Joshua. "Loans and Marketing Guarantees in Athlete Agent Recruiting". Texas A&M Law Review 7, n. 3 (maggio 2020): 543–72. http://dx.doi.org/10.37419/lr.v7.i3.2.
Testo completoAbstract (sommario):
Athlete agents use various means to recruit prospective clients. Controversial yet common methods include offering loans and marketing guarantees to prospective clients. In each transaction, the agent provides his client with money, in some cases amounting to millions of dollars. The agent typically expects repayment of the loan whereas the marketing guarantee is an advance on future marketing income that the agent will arrange for the athlete. While both National Football League Players Association (“NFLPA”) agent regulations and state athlete agent laws prohibit agents from offering inducements to prospective clients, neither authority considers loans or marketing guarantees illicit or prohibits them. This Article details the use of loans and marketing guarantees in the football agent recruiting process. The Article also explores both NFLPA and state athlete agent law, which is based on the Uniform Athlete Agents Act or its revised version’s prohibitions on athlete agents providing inducements to prospective clients. It describes the fiduciary relationship between athlete agents and their clients and the duties that result under agency law. Next, the Article applies agency law to the provision of loans and marketing guarantees by athlete agents to their clients, determining that agency law seeks to prohibit such transactions. The Article then discusses the application of attorney ethics regulations to attorneys who serve as athlete agents and provide loans and marketing guarantees, finding that attorney-agents who engage in this activity violate ethics regulations. The Article concludes by explaining why both athlete agents and athletes should be leery of these dealings and by urging the NFLPA and individual states to expressly prohibit them.
9
Shankar, Prasad R., Sarah K. Fields, Christy L. Collins, Randall W. Dick e R. Dawn Comstock. "Epidemiology of High School and Collegiate Football Injuries in the United States, 2005-2006". American Journal of Sports Medicine 35, n. 8 (agosto 2007): 1295–303. http://dx.doi.org/10.1177/0363546507299745.
Testo completoAbstract (sommario):
Background Football, one of the most popular sports among male high school students in the United States, is a leading cause of sports-related injuries, with an injury rate almost twice that of basketball, the second most popular sport. Hypothesis Injury patterns will vary between competition and practice exposures and between levels of play (ie, high school vs. National Collegiate Athletic Association [NCAA]). Study Design Descriptive epidemiology study. Methods Football-related injury data were collected over the 2005-2006 school year from 100 nationally representative high schools via High School RIO™ (Reporting Information Online) and from 55 Division I, II, and III colleges via the NCAA Injury Surveillance System. Results Nationally, an estimated 517 726 high school football-related injuries (1881 unweighted injuries) occurred during the 2005-2006 season. The rate of injury per 1000 athlete-exposures was greater during high school competitions (12.04) than during practices (2.56). The rate of injury per 1000 athlete-exposures was also greater during collegiate competitions (40.23) than during practices (5.77). While the overall rate of injury per 1000 athlete-exposures was greater in the NCAA (8.61) than in high school (4.36), high school football players sustained a greater proportion of fractures and concussions. Running plays were the leading cause of injury, with running backs and linebackers being the positions most commonly injured. Conclusion Patterns of football injuries vary, especially by type of exposure and level of play. Future studies should continue to compare differences in injury patterns in high school and collegiate football, with particular emphasis placed on high-risk plays (running plays) and positions (running backs and linebackers).
10
Menger, Richard, Austin Menger e Anil Nanda. "Rugby headgear and concussion prevention: misconceptions could increase aggressive play". Neurosurgical Focus 40, n. 4 (aprile 2016): E12. http://dx.doi.org/10.3171/2016.1.focus15615.
Testo completoAbstract (sommario):
OBJECTIVE Multiple studies have illustrated that rugby headgear offers no statistically significant protection against concussions. However, there remains concern that many players believe rugby headgear in fact does prevent concussions. Further investigation was undertaken to illustrate that misconceptions about concussion prevention and rugby headgear may lead to an increase in aggressive play. METHODS Data were constructed by Internet survey solicitation among United States collegiate rugby players across 19 teams. Initial information given was related to club, age, experience, use of headgear, playing time, whether the rugger played football or wrestling in high school, and whether the player believed headgear prevented concussion. Data were then constructed as to whether wearing headgear would increase aggressive playing style secondary to a false sense of protection. RESULTS A total of 122 players responded. All players were male. The average player was 19.5 years old and had 2.7 years of experience. Twenty-three of 122 players (18.9%) wore protective headgear; 55.4% of players listed forward as their primary position. Overall, 45.8% (55/120) of players played 70–80 minutes per game, 44.6% (54/121) played football or wrestled in high school, 38.1% (45/118) believed headgear prevented concussions, and 42.2% (51/121) stated that if they were using headgear they would be more aggressive with their play in terms of running or tackling. Regression analysis illustrated that those who believed headgear prevented concussions were or would be more likely to engage in aggressive play (p = 0.001). CONCLUSIONS Nearly 40% of collegiate rugby players surveyed believed headgear helped to prevent concussions despite no scientific evidence that it does. This misconception about rugby headgear could increase aggressive play. Those who believed headgear prevented concussion were, on average, 4 times more likely to play with increased aggressive form than those who believed headgear did not prevent concussions (p = 0.001). This can place all players at increased risk without providing additional protection. Further investigation is warranted to determine if headgear increases the actual measured incidence of concussion among rugby players in the United States.
Tesi sul tema "Football players – Recruiting – United States"
1
Nishimoto, Patricia Atsuko. "Student-athlete engagement : an examination of peer culture in intercollegiate Division I football". Thesis, 1995. http://hdl.handle.net/10125/9692.
Testo completo
2
Wanless, Elizabeth A. "The CSCS, coach certification, division affiliation, and pre- and post-activity stretching protocols in NCAA Division I, II, and III football programs". 2011. http://liblink.bsu.edu/uhtbin/catkey/1644455.
Testo completoAbstract (sommario):
Access to abstract permanently restricted to Ball State community onlyAccess to thesis permanently restricted to Ball State community only
School of Physical Education, Sport, and Exercise Science
Libri sul tema "Football players – Recruiting – United States"
1
Bell, Taylor H. A., 1940-, a cura di. Football's second season: Scouting high school game breakers. Champaign, IL: Sports Pub., 2007.
Cerca il testo completo
2
Guardabascio, Mike. Football in Long Beach. Charleston, SC: The History Press, 2012.
Cerca il testo completo
3
Brenner, Richard J. Football superstars album, 1998. New York, NY: Beech Tree, 1998.
Cerca il testo completo
4
Garrison, Walt. Once a cowboy. New York: Random House, 1988.
Cerca il testo completo
5
Sandler, Michael. Mark Sanchez. New York: Bearport Pub., 2012.
Cerca il testo completo
6
Steve, Delsohn, a cura di. On the run. Chicago: Contemporary Books, 1986.
Cerca il testo completo
7
Jim, Bruton, a cura di. Every day is game day. Chicago: Triumph Books, 2009.
Cerca il testo completo
8
Doeden, Matt. The best of pro football. Mankato, Minn: Capstone Press, 2009.
Cerca il testo completo
9
Robinson, Tom. Ben Roethlisberger: Gifted and giving football star. Berkeley Heights, NJ: Enslow Publishers, 2010.
Cerca il testo completo
10
Offstein, Evan H. Gridiron leadership: Winning strategies and breakthrough tactics. Santa Barbara, Calif: Praeger, 2009.
Cerca il testo completoCapitoli di libri sul tema "Football players – Recruiting – United States"
1
Bunk, Brian D. "Colleen Bawns and Bonnie Lassies". In From Football to Soccer, 120–44. University of Illinois Press, 2021. http://dx.doi.org/10.5622/illinois/9780252043888.003.0007.
Testo completoAbstract (sommario):
Early attitudes toward women playing football tended to see such games if not as a joke than at least something to be approached with bemused curiosity, often combined with voyeuristic sexism. Despite such views, many of the first female players took up the pastime with a determination to show that they could excel at the sport. Such was the case with the players who competed in the earliest documented women’s soccer games in the United States. Two matches between teams called the Colleen Bawns and Bonnie Lassies took place in San Francisco in December 1893. The chapter contextualizes the matches within the city’s sporting culture and shows how they reflected the broader growth of athletic opportunities for women in the second half of the nineteenth century.
2
Bunk, Brian D. "Soccer Goes to War". In From Football to Soccer, 165–84. University of Illinois Press, 2021. http://dx.doi.org/10.5622/illinois/9780252043888.003.0009.
Testo completoAbstract (sommario):
Soccer had been played for decades prior to World War I, but the experience of war transformed it from a marginalized pastime into an established part of the American sporting tradition. The chapter tells the stories of Joe Cunat and Maurice Hudson to illustrate how the war contributed to the growth of soccer in the United States. A foundation of soccer clubs, leagues, and players already existed in many communities, including areas around Chicago and San Francisco where the two men competed. The government along with the YMCA spent enormous resources to encourage at soldiers to play and watch soccer. Such investments introduced the game to hundreds of thousands of men, thus providing a new cohort of players and spectators that could support the competitions that had emerged over the previous decade. The experience of war led to a golden age of soccer in the 1920s.
3
Gilbert, Daniel R. "The Stakeholder Containment Imperative". In Ethics Through Corporate Strategy, 42–62. Oxford University PressNew York, NY, 1996. http://dx.doi.org/10.1093/oso/9780195096248.003.0003.
Testo completoAbstract (sommario):
Abstract Corporate America has the Baldridge Award. The motion picture indus try has the Oscar. Members of the recording industries in the United States and Canada confer the Grammy and Juno awards, respectively. College football players can be honored either with the Reisman Trophy or the Outland Award. Professional ice hockey has the Stanley Cup. Professional athletes can be honored with Most Valuable Player and Comeback Player awards. The world community has the Nobel Peace Prize. Each year, the University of Minnesota and the University of Iowa football teams play for the Floyd of Rosedale trophy.
4
"Barnstorming Frenchmen: the impact of Paris Université Club’s US tours and the individual in sports diplomacy". In Sport and diplomacy, a cura di Lindsay Sarah Krasnoff, 130–46. Manchester University Press, 2018. http://dx.doi.org/10.7228/manchester/9781526131058.003.0008.
Testo completoAbstract (sommario):
Meet Martin Feinberg, the sole American basketball player on the storied Paris Université Club (PUC) roster in 1956. That December, Feinberg organized a team tour through the American Midwest, the first such journey undertaken by a French basketball club. PUC’s travels (including a 1962 visit) were not subsidized by the U.S. Government, thus not “official” exchanges. The trips were nevertheless strong examples of sport’s ability to carry social and political messages with deep consequences. Basketball was first played in Europe in 1893 in a small sports hall located at 14, rue de Trévise, in Paris, France. Basketball, however, remained a niche endeavor in a country that favored British sports, notably football and rugby. The young PUC players who traveled to the United States were thus not the “typical” representatives of their generation. Yet, many of them, even the more anti-American Socialists, came away with favorable impressions of France’s sister republic in most matters, save that of race relations. “Barnstorming Frenchmen” examines how the earliest French-American basketball exchanges created lasting impressions on young players in ways traditional diplomacy and diplomats rarely could. Set against the larger context of post-war French anxieties and reconstruction, French-American Cold War diplomacy, and race relations in both countries, these trips are noteworthy.
5
Lambert, Frank. "Growing Up White in Mississippi". In The Battle of Ole Miss, 31–48. Oxford University PressNew York, NY, 2009. http://dx.doi.org/10.1093/oso/9780195380422.003.0003.
Testo completoAbstract (sommario):
Abstract For his thirteenth birthday, Willie Morris got the gift of his dreams. On a crisp autumn day, November 29, 1947, his parents took him to Starkville, Mississippi, for the annual football classic between Ole Miss and Mississippi State. This year was special because Willie’s two favorite players would go head-to-head in the contest. Tom “Shorty” McWilliams was State’s star player, a triple threat tailback in the single-wing formation. He had transferred from the United States Military Academy at West Point, where he had received All America recognition while playing in the same backfield as the great Doc Blanchard and Glenn Davis. Charlie Conerly led Ole Miss. He had first entered the university in 1941, but left shortly after the Japanese bombed Pearl Harbor. After fighting on Guam and Iwo Jima during World War II, he returned to Ole Miss and became an outstanding passer, runner, and punter. Ole Miss was Willie’s favorite team, and this season had been particularly thrilling because the Rebels were on top of the powerful Southeastern Conference.
6
G. Gosnell, Griffith, Brett A. Gerber, Gregory P. Guyton e Heath P. Gould. "Playing Surface and Injury Risk: Artificial Turf Vs. Natural Grass". In Injury and Sports Medicine [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.106615.
Testo completoAbstract (sommario):
Artificial turf’s developmental history spans 6 generations and includes design improvements that transformed an injury-inducing 1st generation field into a modern 3rd generation natural grass substitute. Artificial turf has become a widely adopted playing surface with a $2.7 billion United States Dollar (USD) valuation in North America. Turf’s popularity is due to its increased functionality and decreased cost compared to natural grass that allows more sports to play on the surface for longer time periods with decreased maintenance costs. From a biomechanical perspective, artificial turf exhibits higher frictional coefficients than natural grass resulting in higher foot and ankle injury rates. Concussion rates on turf are decreased compared to natural grass due to lower G-max values on well-maintained artificial surfaces. Hip, knee, and overall injury rates are equivalent between the two surfaces except in specific populations including elite-level American football players that exhibit increased knee injury rates on artificial turf. Due to these tradeoffs, the authors suggest that athletic organizations with funding to support professional groundskeeping should consider investing in natural grass due to athlete preference and decreased injury risk. In contrast, organizations without sufficient funding for professional groundskeeping operations may consider investing in modern artificial turf due to its associated long-term benefits and decreased costs.
Atti di convegni sul tema "Football players – Recruiting – United States"
1
Johnson, Kyle, M. W. Trim, Mark F. Horstemeyer e R. Prabhu. "Examination of Geometric Effects on Stress Wave Propagation and Applications in Football Helmet Design". In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14544.
Testo completoAbstract (sommario):
A recent study of college and high school football players demonstrated that 5.1% sustained at least one concussion in a single season. Considering the number of individuals that participate in football in the United States, this percentage equates to a staggering number [1]. The information and attention dealing with concussions and traumatic brain injury (TBI) has greatly increased recently, and represents a need for more advanced helmets that can eliminate concussions as well as other forms of TBI. In order to obtain this goal, lessons can be learned from high speed impacts in nature, particularly the shock-mitigating effects of the bighorn sheep’s (or ram’s) horn and woodpecker’s hyoid bone. For instance, during fights between male bighorn sheep, the rams clash together at speeds up to 5.5 m/s, causing forces up to 3400 N [2]. Even while undergoing these tremendous forces, the animals are rarely injured, which leads to the notion that the horn geometry plays a role in mitigating the shock wave. The woodpecker’s hyoid bone extends around the skull in a spiral shape. It aids the woodpecker in extending its tongue and helps bypass vibrations generated from drumming, which protects the brain from shock [3]. Does the reoccurrence of this curious (tapered spiral) shape throughout nature have some significance in regards to energy dissipation and shock absorption abilities inherent to its geometry? Answering this was the primary goal of this study.
2
Rowson, Steven, e Stefan M. Duma. "Rotational Acceleration and Velocity Associated With Concussion in Humans". In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53682.
Testo completoAbstract (sommario):
Kinematic parameters of the head are used to predict brain injury because they are thought to be indicative of the inertial response of the brain. Although all injury metrics used to predict head injury in industry are based on linear acceleration, brain injury is widely believed to be caused by the complex interaction between linear and angular kinematics. Previous research investigating angular kinematics have focused on animal models, where data cannot be directly applied to humans [1, 2]. Optimally, these data would be derived from humans. There are an estimated 1.6 to 3.8 million sports-related occurring annually in the United States [3]. Football’s high incidence of concussion provides a unique opportunity to collect biomechanical data to characterize this injury. By instrumenting and observing a population that is at high risk for concussion (football players), data characterizing concussion can be collected in a natural and ethically sound manner. The objective of this study was to estimate the angular kinematics of the head associated with concussion using data collected from human volunteers.