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Nandrolone- induced myocardial infarction in a professional soccer player
MB Sharifkazemi,J Kojury,S Shahrzad,M Zamirian
Iranian Cardiovascular Research Journal , 2007,
Abstract: Androgenic Anabolic Steroids (AAS) are often used by athletes for enhancing athletic performance but are strongly associated with detrimental cardiovascular effects including sudden cardiac death1. Herein, we present a 24 year-old professional soccer player who suffered acute myocardial infarction after nandrolone consumption
The Brazilian Football Association (CBF) model for epidemiological studies on professional soccer player injuries
Arliani, Gustavo Goncalves;Belangero, Paulo Santoro;Runco, Jose Luiz;Cohen, Moisés;
Clinics , 2011, DOI: 10.1590/S1807-59322011001000007
Abstract: objective: this study aims to establish a national methodological model for epidemiological studies on professional soccer player injuries and to describe the numerous relevant studies previously published on this topic. introduction: the risk of injury in professional soccer is high. however, previous studies of injury risk in brazil and other countries have been characterized by large variations in study design and data collection methods as well as definitions of injury, standardized diagnostic criteria, and recovery times. methods: a system developed by the union of european football for epidemiological studies on professional soccer players is being used as a starting point to create a methodological model for the brazilian football association. to describe the existing studies on professional soccer player injuries, we developed a search strategy to identify relevant epidemiological studies. we included the latin american and caribbean center on health sciences and medline databases in our study. results: we considered 60 studies from medline and 16 studies from the latin american and caribbean center on health sciences in the final analysis. twelve studies were selected for final inclusion in this review: seven from the latin american and caribbean center on health sciences and five from medline. we identified a lack of uniformity in the study design, data collection methods, injury definitions, standardized diagnostic criteria, and the definition of recovery time. based on the information contained within these articles, we developed a model for epidemiological studies for the brazilian football association. conclusions: there is no uniform model for epidemiological studies of professional soccer injuries. here, we propose a novel model to be applied for epidemiological studies of professional soccer player injuries in brazil and throughout the world.
Partial isolated rupture of the popliteus tendon in a professional soccer player: a case report
Pier Mariani, Fabrizio Margheritini
Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology , 2009, DOI: 10.1186/1758-2555-1-18
Abstract: The popliteus muscle functions as a dynamic internal rotator of the tibia. For this reason rupture of the popliteus muscle is usually associated with acute or chronic posterolateral instability of the knee. The isolated rupture of the popliteus tendon is a very rare injury and it has been rarely reported in the literature as a cause of knee hemarthrosis and functional disabilities. While most of the reported cases deal with tendon avulsions [1-6] or intra-substance ruptures [7,8], partial rupture has never been reported previously. The purpose of this article is to report one case of partial rupture of the popliteus tendon in a professional soccer player treated by debridment and to discuss the pathological findings of this lesion that could suggest an overuse disease of the tendon in a athlete.A 31-year-old professional first division goalkeeper injured his right knee hitting the ground with the lateral side of the knee after making a save during a game. No previous similar injuries were sustained by the player, while he wasn't able to identify the exact moment of the trauma. He referred immediately only minimal discomfort and no apparent effusion and he continued to play on. After 2 weeks, the discomfort progressed despite physiotherapy. An orthopaedic referral was made for persistent pain located at knee lateral aspect only during his sports activity. The first orthopaedic surgeon made a clinical diagnosis of a lateral meniscal tear and requested an MRI examination that was judged negative. At that time the patient came to our institution without any further treatment carried on. Clinical examination revealed absence of effusion and non-specific lateral joint-line tenderness with full extension and flexion. It was possible to elicit sharp pain palpating the popliteus tendon at femoral groove. The suspicion of other diseases, such as popliteus tendon snapping or popliteomeniscal fascicle tear were ruled out with the figure-four test and the Cabot test that were bo
Design and Development of a Comprehensive Omni Directional Soccer Player Robot
Hooman Aghaebrahimi Samani,Amir Abdollahi,Hossein Ostadi,Saeed Ziaee Rad
International Journal of Advanced Robotic Systems , 2008,
Abstract: Omni directional mobile robots have been popularly employed in several applications especially in soccer player robots considered in Robocup competitions. However, omni directional navigation system, omni-vision system and omni-kick mechanism in such soccer player robots have not ever been combined. This situation brings the idea of a robot with no head direction into existence, i.e. a comprehensive omni directional soccer player robot. Such a robot can respond more quickly and it would be capable for more sophisticated behaviors such as ball passing or goal keeping. This paper has tried to focus on description of areas such as omni directional mechanisms, mechanical structure, control, optimized odometry system, omni-vision sensor for self localization and other subjects related to soccer player robot's software.
Genetic Programming Method of Evolving the Robotic Soccer Player Strategies with Ant Intelligence
R. Geetha Ramani,R. Subramanian,P. Viswanath
International Journal of Advanced Robotic Systems , 2009,
Abstract: This paper presents the evolved soccer player strategies with ant-intelligence through genetic programming. To evolve the code for players we used the Evolutionary Computation tool (ECJ simulatorEvolutionary Compuation in Java). We tested the evolved player strategies with already existing teams in soccerbots of teambots. This paper presents brief information regarding learning methods and ant behaviors. Experimental results depicts the performance of the evolved player strategies.
Matrix-induced autologous chondrocyte implantation for a large chondral defect in a professional football player: a case report
Tahsin Beyzadeoglu, Ayberk Onal, Alan Ivkovic
Journal of Medical Case Reports , 2012, DOI: 10.1186/1752-1947-6-173
Abstract: A 27-year-old male Caucasian professional football player was previously treated for cartilage problems of his left knee with two failed microfracture procedures resulting in a 9?cm2 Outerbridge Grade 4 chondral lesion at his lateral femoral condyle. Preoperative Tegner-Lysholm and Brittberg-Peterson scores were 64 and 58, and by the second year they were 91 and 6. An evaluation with magnetic resonance imaging demonstrated filling of the defect with the signal intensity of the repair tissue resembling healthy cartilage. Second-look arthroscopy revealed robust, smooth cartilage covering his lateral femoral condyle. He returned to his former competitive level without restrictions or complaints one year after the procedure.This case illustrates that robust cartilage tissue can be obtained with a matrix-assisted autologous chondrocyte implantation procedure even after two failed microfracture procedures in a large (9?cm2) cartilage defect. To the best of our knowledge, this is the first case report on the application of the third-generation cell therapy treatment technique, matrix-assisted autologous chondrocyte implantation, in a professional football player.
Effect of player substitutions on the intensity of second-half soccer match play
Coelho, Daniel Barbosa;Coelho, Leonardo Gomes Martins;Morandi, Rodrigo Figueiredo;Ferreira Junior, Jo?o Batista;Marins, Jo?o Carlos Bouzas;Prado, Luciano Sales;Soares, Danusa Dias;Silami-Garcia, Emerson;
Revista Brasileira de Cineantropometria & Desempenho Humano , 2012, DOI: 10.5007/1980-0037.2012v14n2p183
Abstract: most soccer matches are conducted by coaches who usually make all player substitutions allowed. therefore, it is extremely important to study these substitutions and their effects on the intensity of effort required from players. to date, no published studies have reported on this topic using heart rate (hr) as an intensity parameter. the objective of this study was to compare effort intensity (ei) of soccer players in the following situations: 1) first half (fh-ei); 2) second half (sh-ei); 3) second half with substitutions (shs-ei). forty-five male soccer players (18.5±1.2 years old, 74.25±5.79 kg, 182.6±8.55 cm, 9.56±2.47% body fat, 56.3±4.3 mlo2/kg/min) were evaluated during 29 official games. ei was considered as the mean hr, expressed as the percentage of each player's maximal hr (%hrmax) and as the time spent in each intensity zone (z) according to %hrmax (z1<70%; z2 70-85%; z3 85-90%; z4 90-95%; z5 95-100%). fh-ei (86.3±3.3%hrmax) was higher than sh-ei (80.6±4.4%hrmax) and shs-ei (83.6±2.8%hrmax). shs-ei was higher than sh-ei (p<0.05). time spent in high-intensity zones was lower in sh-ei than in fh-ei, but higher in shs-ei when compared to sh-ei (p<0.05). it was concluded that the decrease in ei in the second half of soccer matches was attenuated by substitutions made at halftime, as evidenced by a longer time spent in high-intensity zones when compared to sh-ei.
Semantic Understanding of Professional Soccer Commentaries  [PDF]
Hannaneh Hajishirzi,Mohammad Rastegari,Ali Farhadi,Jessica K. Hodgins
Computer Science , 2012,
Abstract: This paper presents a novel approach to the problem of semantic parsing via learning the correspondences between complex sentences and rich sets of events. Our main intuition is that correct correspondences tend to occur more frequently. Our model benefits from a discriminative notion of similarity to learn the correspondence between sentence and an event and a ranking machinery that scores the popularity of each correspondence. Our method can discover a group of events (called macro-events) that best describes a sentence. We evaluate our method on our novel dataset of professional soccer commentaries. The empirical results show that our method significantly outperforms the state-of-theart.
Intensity of real competitive soccer matches and differences among player positions
Coelho, Daniel Barbosa;Mortimer, Lucas ávila;Condessa, Luciano Antonacci;Morandi, Rodrigo Figueiredo;Oliveira, Bernardo Moreira;Marins, Jo?o Carlos Bouzas;Soares, Danusa Dias;Garcia, Emerson Silami;
Revista Brasileira de Cineantropometria & Desempenho Humano , 2011, DOI: 10.5007/1980-0037.2011v13n5p341
Abstract: most investigations on soccer match intensity have evaluated friendly, simulated or a small number of games on a recreational basis or including a small number of players. there are no studies investigating real competitive situations including a considerable number of athletes and games or differences among player positions using heart rate as an intensity parameter. the aim of this study was to determine brazilian soccer game intensity (gi) during official competitive matches and to compare gi among different player positions. heart rate (hr) was measured in 26 under-17 (u-17) and 18 under-20 (u-20) soccer players (age 16.38 ± 0.5 and 18.24 ± 0.66 years, respectively) during 14 and 15 official games, respectively. individual maximal heart rate (hrmax) and anaerobic threshold (at) hr were evaluated in field tests. gi defined as %hrmax was monitored considering five intensity zones ranging from 1 = < 70% hrmax to 5 = 95-100% hrmax. mean gi and at intensity were 84.4 ± 5.1 and 86.3 ± 4.0% hrmax for the u-17 category and 84.1 ± 4.1 and 87.0 ± 5.1% hrmax for the u-20 category, respectively. wingbacks (wb) spent more time in zone 5 than forwards (fw) (p<0.05). midfielders (mf) spent more time in zone 3 than all other players and in zone 4 than defenders and fw (p<0.05). mean gi and at intensity were similar. wb performed more maximum effort than fw. mf did not participate as much in maximum effort as did wb and fw.
Traumatic deep vein thrombosis in a soccer player: A case study
Paul S Echlin, Ross EG Upshur, Douglas B McKeag, Harsha P Jayatilake
Thrombosis Journal , 2004, DOI: 10.1186/1477-9560-2-8
Abstract: Athletes can develop vascular injuries in a variety of contact and non-contact sports. Trauma is one of the most common causes of lower extremity deep vein thrombosis (DVT), however athletic injuries involving lower extremity traumatic DVT are seldom reported. This diagnosis and the associated risk factors must be considered during the initial physical examination. The primary method of radiological diagnosis of lower extremity DVT is a complete bilateral duplex sonography, which can be augmented by other methods such as evidence-based risk factor analysis. Antithrombotic medication is the current standard of treatment for DVT. Acute thrombolytic treatment has demonstrated an improved therapeutic efficacy, and a decrease in post-DVT symptoms.There is a lack of scientific literature concerning the return to sport protocol following a DVT event. Athletic individuals who desire to return to sport after a DVT need to be fully informed about their treatment and risk of reoccurrence, so that appropriate decisions can be made.Athletes are susceptible to a variety of vascular injuries, secondary to either repetitive motion, or high-speed collisions [1]. The differential diagnosis for lower extremity trauma in sport seldom invites a diagnosis of vascular injury, such as a deep vein thrombosis (DVT). Failure of the physician to recognize a vascular injury can have catastrophic limb or life threatening (pulmonary embolism) implications. The epidemiology, diagnosis, treatment, and recurrence of DVT, as well as the prevention of post-thrombotic symptoms are the most current areas of clinical research. Research-based guidelines concerning an athlete's return to sport after a DVT is an important area for future investigation.A 42 year old Polish born male former semi-professional soccer player was seen on May 16th, 2003 in the emergency department, with the chief complaint of right leg pain. The patient had been playing soccer 10 days prior to this visit, and recalled a traumatic
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