Accumulative weekly load in a professional football team: with special reference to match playing time and game position

Author(s):  
David Casamichana ◽  
Andrés Martín-García ◽  
Antonio Gómez Díaz ◽  
Paul S Bradley ◽  
Julen Castellano
2009 ◽  
Vol 11 (4) ◽  
pp. 418-442 ◽  
Author(s):  
Francisco González-Gómez ◽  
Andrés J. Picazo-Tadeo

2019 ◽  
Vol 7 (7_suppl5) ◽  
pp. 2325967119S0039
Author(s):  
Patrick Wise ◽  
Robert A. Gallo

Objectives: Pectoralis major ruptures are considered an uncommon injury in football. A previous study showing that only 10 compete ruptures occurred in the NFL between the years 2000-2010. The purpose of the study is to report the incidence of pectoralis ruptures in National Football League (NFL) players from 2010-2017 and identify any characteristics that could have contributed. We hypothesized that incidence of pectoralis major ruptures would increase over the past eight years. Methods: Using publicly available reports from websites such as ESPN.com and NFL.com, pectoralis major injuries in professional football players were identified during the years 2010-2017. Details about age, position played, injury setting, performance enhancing drug (PED) suspensions, and combine performance were obtained from NFL Combine and compared to peers at the same workout. Results: During the eight years analyzed 51 separate NFL players suffered a total of 55 pectoralis major ruptures. Defensive players accounted for 82% (42 of 51) of the injured players. The ruptures happened at the average age of 26±1 years, and 76.4% (42 of 55) of them occurred during games. After the rupture, 87.3% (48 of 55) required surgery, while definitive treatment could not be determined for the remaining seven injuries. For athletes that received playing time before injury and had their rupture occur prior to the most recent 2017 season, 85.4% (41 of 48) returned to play in a game. When comparing athletes at the combine who later ruptured their pectoralis major to peers at their position, those who tore their pectoralis major tendon on-average ranked in the 63 rd percentile for bench press (N=40), 50th percentile for arm length (N=14), and 52nd percentile for 20-yard shuttle (N=20). When the NFL suspension records were examined, only 5.9% (3 of 51) of players with a pectoralis major rupture had been suspended for (performance-enhancing drug) PED use before or after the injury. Conclusion: The total number of pectoralis major ruptures has drastically risen from 10 cases between 2000-2010 to 55 cases from 2010-2017. The reason behind this increase remain uncertain but appears to be independent of relative strength, agility, and arm length, and suspension for PED use.


2020 ◽  
Vol 15 (5-6) ◽  
pp. 662-668
Author(s):  
Bo Han ◽  
Qiu Chen ◽  
Carlos Lago-Peñas ◽  
Changquan Wang ◽  
Tianbiao Liu

With the development and advancement of technology, various types of high-tech auxiliary equipment have been gradually introduced into football matches to assist referees to officiate the game. The Chinese football Super League (CSL) introduced the video assistant referee (VAR) in the 2018 season. The purpose of this study is to explore the impact of the introduction of VAR on football matches and on referees’ performance. This study compared the data of all 240 games without VAR in the season 2017 and all 240 games with VAR in the season 2018 using Generalized Linear Model (GLM) and means comparison. The following match variables were considered: goals, penalties, red cards, yellow cards, fouls, offsides, playing time in the first half, playing time in the second half and total playing time. The study found that: 1) After the introduction of VAR, the number of offsides and fouls in the Chinese Super League dropped significantly (p < .001); 2) the playing time in the first and second half and the total playing time increased significantly(p < .001); 3) after the introduction of VAR, the home team advantage decreased slightly. The research result can help to better understand the impact of VAR on professional football, especially on the Chinese football Super League, it can also help referees to optimize their refereeing strategy.


Author(s):  
Ramon Z. Shaban ◽  
Cecilia Li ◽  
Matthew V.N. O’Sullivan ◽  
Jen Kok ◽  
Kathy Dempsey ◽  
...  

1997 ◽  
Vol 85 (1) ◽  
pp. 257-258 ◽  
Author(s):  
Ian Jones

Wann, et al. (1996) have measured factors responsible for identification with American sports teams suggesting that success is the most important factor influencing current identification. This study identifies locality to the team as the most important factor for identification with an English professional football team. Considerable differences suggest that fans from various sporting contexts may have differing reasons for identification with a particular team.


1979 ◽  
Vol 7 (3) ◽  
pp. 178-182 ◽  
Author(s):  
James C. Ellsasser ◽  
Arthur H. Stein

Author(s):  
Nozomi OHISHI ◽  
Tomoyasu ASAOKA ◽  
Akiyoshi TAKAGI ◽  
Koji KITAURA

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