League Players Research Articles

Does gaming keep subjects awake?: Subjective and objective sleep parameters following gaming in comparison to a passive control

ObjectivesGaming is a global phenomenon often associated with impaired health and sleep patterns. Although the research activities are growing, the evidence to date is rare due to the various gaming titles and inconsistent study designs. Thus, this study aimed to examine the impact of excessive gaming in the evening on subjective as well as objective sleep parameters by focusing on specific game titles and assessing several evenings/nights using a mixed-methods approach. MethodsA total of 33 experienced young male adults (23.00 ± 3.53 years old, ranked players in League of Legends or Counter-Strike: Global Offensive) took part. The individuals’ sleep parameters were assessed via diary and actigraphy. In randomized order, one week apart and for a duration of 120 min each, two study evenings were spent gaming, while the other two evenings were spent without digital media and gaming, but instead watching a nature documentary. ResultsNo significant difference between the conditions were found (p > 0.05) in either the sleep duration nor the sleep quality. Daytime sleepiness was significantly increased after watching the documentary movie, when compared to gaming (p < 0.001). ConclusionsThese results indicate that, one the one hand, the gaming activity leads to higher arousal and alertness as it requires concentration and dedication. On the other hand, this impact seems only short-term and does not necessarily affect sleep patterns. Future studies are needed to gain deeper insights, especially regarding the long-term health effects of gaming.

Concussion-Related Biomarker Variations in Retired Rugby Players and Implications for Neurodegenerative Disease Risk: The UK Rugby Health Study.

The health and well-being of retired rugby union and league players, particularly regarding the long-term effects of concussions, are of major concern. Concussion has been identified as a major risk factor for neurodegenerative diseases, such as Alzheimer's and Amyotrophic Lateral Sclerosis (ALS), in athletes engaged in contact sports. This study aimed to assess differences in specific biomarkers between UK-based retired rugby players with a history of concussion and a non-contact sports group, focusing on biomarkers associated with Alzheimer's, ALS, and CTE. We randomly selected a sample of male retired rugby or non-contact sport athletes (n = 56). The mean age was 41.84 ± 6.44, and the mean years since retirement from the sport was 7.76 ± 6.69 for participants with a history of substantial concussions (>5 concussions in their career) (n = 30). The mean age was 45.75 ± 11.52, and the mean years since retirement was 6.75 ± 4.64 for the healthy controls (n = 26). Serum biomarkers (t-tau, RBP-4, SAA, Nf-L, and retinol), plasma cytokines, and biomarkers associated with serum-derived exosomes (Aβ42, p-tau181, p-tau217, and p-tau231) were analyzed using validated commercial ELISA assays. The results of the selected biomarkers were compared between the two groups. Biomarkers including t-tau and p-tau181 were significantly elevated in the history of the substantial concussion group compared to the non-contact sports group (t-tau: p < 0.01; p-tau181: p < 0.05). Although between-group differences in p-tau217, p-tau231, SAA, Nf-L, retinol, and Aβ42 were not significantly different, there was a trend for higher levels of Aβ42, p-tau217, and p-tau231 in the concussed group. Interestingly, the serum-derived exosome sizes were significantly larger (p < 0.01), and serum RBP-4 levels were significantly reduced (p < 0.05) in the highly concussed group. These findings indicate that retired athletes with a history of multiple concussions during their careers have altered serum measurements of exosome size, t-tau, p-tau181, and RBP-4. These biomarkers should be explored further for the prediction of future neurodegenerative outcomes, including ALS, in those with a history of concussion.

Injury incidence and associated factors among soccer players during the 2021 African Cup of Nations competition

Background Understanding the epidemiology of soccer injuries during specific international competitions is essential for customizing preventive strategies. Several studies have reported outcomes related to international competitions but, to the best of our knowledge, there has been no investigation into the injury patterns during any African Cup of Nations (AFCON) tournaments. This study aimed to analyse the incidence and the characteristics of soccer injuries during the 2021 African Cup of Nations (AFCON), which took place in Cameroon from January 9 to February 6, 2022. Methods A video-based analysis covering 52 matches was conducted by two independent consultant physicians. They reviewed injury replays to determine incidence and characteristics ( i.e. ; mechanisms, body location, match moment, player substitution, absence in the next match, and referee decisions). Results The tournament involved 519 male players, comprising 275 African (ALP) and 244 Non-African (NALP) league players. Eighty-seven injuries occurred, with incidences of 1.7 and 48.8 injuries per match and per 1000 match hours, respectively. Injury incidence rose with competition stages, particularly contact mechanism injuries. Non-contact injuries (23/87) predominantly occurred after 60 minutes of play (19/23), with the thigh being the most frequently affected body part (18/87). Older age and playing time significantly correlated with injury occurrence (p=0.032 and p&lt;0.001, respectively). NALP midfielders and forwards were notably injured by contact mechanisms (36/45) in the attacking zone. Although non-contact mechanisms were more common in ALP than NALP (13/42 vs. 9/45), the difference lacked statistical significance (p=0.240), with a higher rate of muscle injuries (13/42 vs. 10/45, p=0.001). Conclusion Muscle injuries prevailed among professional soccer players in the 2021 AFCON, with older age and playing time identified as key associated factors. Muscle injuries were more prevalent in ALP compared to NALP.

Investigating the EEG Profile of Elite and Non-Elite Players in the Basketball Free Throw Task

This study aimed to investigate the electroencephalographic profile of elite and non-elite basketball players seconds before and during the basketball free throw. Sixteen male subjects in the elite group (national team/premier league players with an average age of 22.06 ± 1.56) and 16 male non-elite subjects (university players with an average age of 22.37 ± 1.45) voluntarily participated in this research. Electroencephalographic data were measured from 28 cortical areas using a mobile wireless device. ANOVA with repeated measures were also performed to investigate the characteristics of theta, alpha, and beta frequency bands. The findings showed the higher cortical activity of the elite group. Different frequency bands exhibited similar asymmetry patterns, suggesting the higher activity of the left hemisphere in most of the homologous sites. Moreover, the activity of frequency bands in the left hemisphere rose by approaching the moment of throw. Furthermore, the activity of a limited number of right hemisphere sites increased by getting closer to the moment of action. In general, hemispheric asymmetry in favor of the left hemisphere has a cortical pattern, reflecting high-performance activities. In addition, the characteristics of different frequency bands of hemispheres are directed toward increasing cognitive processing, attention focusing, and inhibiting irrelevant information.

O.5.1-7 Travel patterns and CO2 emissions of recreational league play in football and handball in Germany - an explorative study

Abstract Purpose Recreational sports are commonly recommended for their health-enhancing effects. But broadening the perspective on planetary health raises the question of how they impact the environment. While there is a body of evidence on the impacts of professional sports on planetary health, there is currently a lack of studies investigating the sustainability of grassroots level sports, in particular team sports in recreational leagues. This study set out to explore travel patterns in different recreational leagues in the sports of football and handball in Germany. Methods We derived data including club location and game schedules for amateur football and handball teams in the region of Erlangen, Germany, from official websites of sport federations. Using google maps, we calculated the travel distances for every match-up in season 2022/23 and highlighted the distribution of teams in divisions by mapping. Results Even on a low recreational level, significant travel distances are accrued by teams over a season. In general, playing in a more competitive league results in longer travel distances for football teams. On average, women teams cover longer travel distances compared to men’s teams. Playing handball results in more travel compared to playing football. The current set-up of divisions can be improved to limit travel distances. Conclusions Despite some limitations (e.g., number of included divisions or difficulty translating the distances into CO2 emissions), this investigation sheds light on the environmental impact of recreational league play. The sheer number of sports teams suggests the importance of investigating recreational league play and supporting sport federations to optimize game schedules to limit travel emissions. Funding Source The study was not funded.

Epidemiology of injuries and illnesses in elite wheelchair basketball players over a whole season – a prospective cohort study

BackgroundWheelchair basketball is an adaptation of pedestrian basketball and one of the most popular Paralympic sports worldwide. The epidemiology of health problems in wheelchair basketball has been prospectively studied only during the Paralympic Games, the 2018 World Championships, the 2021 South America Wheelchair Basketball Championship, and one season of two American intercollegiate wheelchair basketball teams. The objective of the study was to prospectively monitor and analyze the prevalence, incidence, burden, and characteristics of injuries and illnesses in a wheelchair basketball league during an entire season for the first time.MethodsAll players of the highest German wheelchair basketball league (Bundesliga) were invited to participate in the study. Included players completed the Oslo Sports Trauma Research Center Questionnaire once a week during the entire season 2020/21 to report health problems. Exposure was captured by self-reported training time and officially-recorded competition time.ResultsSixty of 117 players (51%, 47 male, 13 female) of the national league participated with an average response of 93%. Seventy health problems (5.5/1000 exposure hours [95% CI: 4.9–6.1]) were reported, including 54 injuries and 16 illnesses. Prevalence of health problems was 60% (95% CI: 48–72). Most injuries affected the shoulder (32% of all injuries), cervical spine/neck (17%), and hand (13%). More overuse injuries (2.9/1000 exposure hours [95% CI: 2.5–3.3]) than acute injuries (1.3/1000 exposure hours [95% CI: 1.0-1.6]) occurred. Of all health problems, 53% were associated with time-loss. The incidences of all health problems, illnesses, injuries, and overuse injuries were higher in women than in men.ConclusionsCharacteristics and frequency of injuries and illnesses during wheelchair basketball season differed from those during major wheelchair basketball tournaments. The high proportion of overuse injuries and the higher injury rates in women should be regarded in the development of individualized prevention measures. Since results from previous studies during major tournaments are only partially comparable to wheelchair basketball league play, further studies should follow.

Factors Associated With Concussion Rates in Youth Ice Hockey Players: Data From the Largest Longitudinal Cohort Study in Canadian Youth Ice Hockey.

To examine factors associated with rates of game and practice-related concussion in youth ice hockey. Five-year prospective cohort (Safe2Play). Community arenas (2013-2018). Four thousand eighteen male and 405 female ice hockey players (6584 player-seasons) participating in Under-13 (ages 11-12), Under-15 (ages 13-14), and Under-18 (ages 15-17) age groups. Bodychecking policy, age group, year of play, level of play, previous injury in the previous year, lifetime concussion history, sex, player weight, and playing position. All game-related concussions were identified using validated injury surveillance methodology. Players with a suspected concussion were referred to a study sport medicine physician for diagnosis and management. Multilevel Poisson regression analysis including multiple imputation of missing covariates estimated incidence rate ratios (IRRs). A total of 554 game and 63 practice-related concussions were sustained over the 5 years. Female players (IRR Female/Male = 1.79; 95% CI: 1.26-2.53), playing in lower levels of play (IRR = 1.40; 95% CI: 1.10-1.77), and those with a previous injury (IRR = 1.46; 95% CI: 1.13, 1.88) or lifetime concussion history (IRR = 1.64; 95% CI: 1.34-2.00) had higher rates of game-related concussion. Policy disallowing bodychecking in games (IRR = 0.54; 95% CI: 0.40-0.72) and being a goaltender (IRR Goaltenders/Forwards = 0.57; 95% CI: 0.38-0.87) were protective against game-related concussion. Female sex was also associated with a higher practice-related concussion rate (IRR Female/Male = 2.63; 95% CI: 1.24-5.59). In the largest Canadian youth ice hockey longitudinal cohort to date, female players (despite policy disallowing bodychecking), players participating in lower levels of play, and those with an injury or concussion history had higher rates of concussion. Goalies and players in leagues that disallowed bodychecking had lower rates. Policy prohibiting bodychecking remains an effective concussion prevention strategy in youth ice hockey.

Effects of different training schedules based on distance and accelerometry measures: A full-season case study in professional soccer players

This study aimed to evaluate external load based on distance and accelerometry measures in six different microcycle schedules with congested (CW2, CW3, and CW4) and regular weeks (RW4, RW5, and RW6) in professional soccer players. Twelve Iranian First League players (age: 28.2 ± 3.8 years; body mass: 77.92 ± 4.72 kg, and height: 183.2 ± 0.06 cm) participated in this study. A GPSPORTS system was used to collect training/match durations, total distance, distance covered at different speeds, number of accelerations, delecelerations and body load over 29 weeks, 40 matches, and 121 training sessions. Data were analysed by weekly mean and accumulated weekly values. The results showed a tendency for higher values in CWs than RWs. Regarding mean total distance, RW4 and RW5 presented lower values with very large effect size than CW2 (all, p < 0.05). The mean distance covered between 16 and 23 km/h showed that all RWs presented significantly lower values than all CWs (p < 0.05 with considerable effect size). In addition, mean acceleration values at < 2 m/s2 showed significantly lower values than all CWs (p < 0.05 with a very large effect size). Therefore, it is recommended to coaches pay special attention to players who participate in matches to reduce fatigue and improve the performance of professional soccer players. Ensuring recovery mechanisms are in place to minimize the external load is recommended. Coaches arrange practice sessions for non-starters who do not experience similar external loads compared to starters to prepare them for potential competition.

Prevalence of symptoms of depression and generalized anxiety disorder in field hockey players of German first and lower leagues.

While several studies on mental health of elite athletes were published in recent years, few compared the prevalence with the general population and none included field hockey players. To analyze the prevalence of symptoms of depression and generalized anxiety disorder in field hockey players of different skill levels and to compare it to the general population. Male and female hockey players from different leagues were asked to answer questions on player characteristics, the Centre of Epidemiologic Studies Depression Scale (CES-D) and the Generalized Anxiety Disorder-7 (GAD-7). One hundred and eighty-seven players (incl. 54 first and 28 second league players) participated in the study (response rate 97.4%). More than a third (n = 64; 35.0%) reported to be affected by an injury/health complaint, but 157 (86.3%) were able to train and play without limitations. The CES-D score indicated depression symptoms in more female (n = 15; 18.3%) than male (n = 5; 4.8%) players (χ2=8.8; p < 0.01). No male and one female player had symptoms of generalized anxiety disorder. Players who played 60 or more matches in the previous 12 months had on average significantly higher depression (t = 2.3; p < 0.05) and generalized anxiety scores (t = 4.2; p < 0.001) than players who played fewer matches. The prevalence of depression and of generalized anxiety symptoms was similar to or lower than in the general population. Although 20 (10.7%) players had depression symptoms, only 4 (2.2%) received psychological counseling or psychotherapy. It is recommended to provide routine screening of mental health problems and low-threshold access to adequate treatment for elite athletes.

The influence of technical performance indicators on the results of the Chinese Football Super League at different stages of the season-based on evidence from the 2010–2019 seasons

This study explored the different influences of technical indicators on match results in different stages of football league play. Sample data from 2400 Chinese Super League matches during 2010–2019 were divided into three season stages according to round sequence: the early stage (1–10 rounds), the middle stage (11–20 rounds), and the late stage (21–30 rounds). A two-way, fixed-effect ordered logit model was then constructed and used, together with Fisher’s combination test, to compare regression results. The study results showed that: (1) when controlling for other variables, as the league progresses, an increase in goals will gradually increase the possibility of better match results, and this increase shows significant differences between the early and late stages ( p &lt; 0.05). The possibility of better match results by an extra goal is 0.075 times higher in the late stage than the early stage. (2) While maintaining all control variables, as the season progresses, the increase in red card penalties will gradually multiply the probability of worse match outcomes, and this increase is also significantly different between the early and middle stages and between the early and late stages ( p &lt; 0.05). The possibility of worse match outcomes due to the presence of an extra red card is 0.377 times higher in the middle stage and 0.476 times higher in the late stage than the early stage.

Periodisation of Eccentrically-Integrated Resistance Training during a National Rugby League Pre-Season

Successful performances in rugby league require the ability to engage in repeated contact efforts with minimal recovery while maintaining a high running intensity. The capacity to express high levels of time-limited force appears to underlie many important physical attributes required to meet the repeated-effort demands of rugby league play. If appropriately periodised and integrated into the training plan, resistance exercise that sufficiently loads the eccentric phase of movement may provide a beneficial stimulus to improve players’ force-generating capacity. Comprehensive reviews relating to the adaptive effects of eccentric training and the methods most commonly prescribed in practical environments are available and may provide context for applying these strategies. However, no literature to date has specifically discussed the planning and programming of eccentric resistance exercise to enhance force production characteristics in elite athletes. Therefore, this narrative review focuses on the periodisation of eccentrically-integrated resistance training during a 17-week National Rugby League pre-season phase. To help guide programming during the pre-season period, the 17-week timeline is divided into several phases (i.e., general preparation, special preparation, active rest, and pre-competition). Within the periodised model, eccentric exercise parameters (i.e., volume, load [% 1RM]) are manipulated to progressively increase the rate of muscle lengthening velocity over the pre-season phase and sequentially elicit changes in muscle-tendon properties and neural function that culminate in improving muscular strength expression.

Disparities In Tennis Participation And Level Of Play Based On Socioeconomic Status And Ethnicity

Tennis is a sport that has been evidenced to provide many health benefits. It is a form of physical activity that can be performed at any age. However, the sport of tennis has long been perceived as an expensive sport compared to other team sports. The United States Tennis Association (USTA) has been taking action to reduce disparities in access to the sport through diversity and inclusion initiatives such as offering grants and funding to low socioeconomic status populations and minorities. PURPOSE: The purpose of this study was to examine disparities in socioeconomic status and ethnicity as it relates to tennis participation and level of play. METHODS: Level of play was captured from the USTA’s Southern California section for the year 2020, with data consisting of a sample size of an N = 32,760 participants (17,933 male, 14823 female, 4 non-disclosed). The data for level of play was grouped as follows; Team Tennis (beginner), League Players (moderate), Tournament Players (advanced). Tennis participation was objectively quantified by membership enrollment in Southern California’s USTA programs. RESULTS: Our findings revealed a 12.5-fold tennis participation rate of White (non-Hispanic) players compared to Hispanic players, a 24.5-fold tennis participation rate of White tennis players compared to African-Americans, a 5.8-fold tennis participation rate of White tennis players compared to other minorities as an aggregate, and a 2.7-fold tennis participation rate of White tennis players compared to Asian players. In addition, when considering the population demographics of Southern California, the disparity is further exasperated, particularly for the Hispanic population. Our study revealed that level of play is statistically significantly negatively correlated with socioeconomic status, p < 0.05. CONCLUSION: The findings of this study exemplify the ethnic inequality prevalent in the sport of tennis. Moreover, the socioeconomic status influence on the level of play is evident across the tiers of the level of play. Therefore, we recommend growing and supporting endeavors that promote diversity and inclusion in efforts to reduce the disparity in tennis participation and level of play.

Does disallowing body checking impact offensive performance in non-elite under-15 and under-18 youth ice hockey leagues? A video-analysis study

Policy that disallows body checking (BC) lowers the injury and concussion rate for youth ice hockey players. However, little is known about how disallowing BC influences in-game metrics of performance. This prospective cohort video-analysis study examined offensive performance in Under-15 (ages 13–14) and Under-18 (ages 15–17) youth ice hockey players in leagues allowing and disallowing BC. Fifty-two games were filmed (n = 13 BC, n = 13 non-BC) for Under-15 and Under-18 non-elite (lowest 60% and 45% divisions, respectively) divisions in Calgary, Canada. Footage was analyzed for offensive performance metrics on the puck-carrier using the validated ice hockey adapted team sport assessment procedure. Puck metrics included how the player acquired puck possession (e.g. conquered puck from an opponent, received pass from a teammate) and the outcome (e.g. shot on goal, lost puck to opponent). The puck metrics were used to compute a performance composite score for each player that accounted for the quantity (rate of puck possessions per shift time) and quality (a ratio of positive performance metrics to all metrics) of play. Mean difference's (MD) in performance composite scores were compared using multivariable linear regression (adjusted for player position and cluster by team-game) between leagues allowing and disallowing BC for both age groups. Analyses revealed no significant MD in the performance composite scores between players in BC and non-BC leagues for both age groups (Under-15: MD = 0.02, 95%CI: −0.08, 0.12; Under-18: MD = −0.06, 95%CI: −0.16, 0.03). These findings suggest no differences in offensive performance when BC is disallowed in Under-15 and Under-18 non-elite leagues.

Resuming Training in High-Level Athletes After Mild COVID-19 Infection: A Multicenter Prospective Study (ASCCOVID-19)

BackgroundThere is a paucity of data on cardiovascular sequelae of asymptomatic/mildly symptomatic SARS-Cov-2 infections (COVID).ObjectivesThe aim of this prospective study was to characterize the cardiovascular sequelae of asymptomatic/mildly symptomatic COVID-19 among high/elite-level athletes.Methods950 athletes (779 professional French National Rugby League (F-NRL) players; 171 student athletes) were included. SARS-Cov-2 testing was performed at inclusion, and F-NRL athletes were intensely followed-up for incident COVID-19. Athletes underwent ECG and biomarker profiling (D-Dimer, troponin, C-reactive protein). COVID(+) athletes underwent additional exercise testing, echocardiography and cardiac magnetic resonance imaging (CMR).Results285/950 athletes (30.0%) had mild/asymptomatic COVID-19 [79 (8.3%) at inclusion (COVID(+)prevalent); 206 (28.3%) during follow-up (COVID(+)incident)]. 2.6% COVID(+) athletes had abnormal ECGs, while 0.4% had an abnormal echocardiogram. During stress testing (following 7-day rest), COVID(+) athletes had a functional capacity of 12.8 ± 2.7 METS with only stress-induced premature ventricular ectopy in 10 (4.3%). Prevalence of CMR scar was comparable between COVID(+) athletes and controls [COVID(+) vs. COVID(−); 1/102 (1.0%) vs 1/28 (3.6%)]. During 289 ± 56 days follow-up, one athlete had ventricular tachycardia, with no obvious link with a SARS-CoV-2 infection. The proportion with troponin I and CRP values above the upper-limit threshold was comparable between pre- and post-infection (5.9% vs 5.9%, and 5.6% vs 8.7%, respectively). The proportion with D-Dimer values above the upper-limit threshold increased when comparing pre- and post-infection (7.9% vs 17.3%, P = 0.01).ConclusionThe absence of cardiac sequelae in pauci/asymptomatic COVID(+) athletes is reassuring and argues against the need for systematic cardiac assessment prior to resumption of training (clinicaltrials.gov; NCT04936503).

Association Between Hamstrings Eccentric Strength and Sprint Performance in Football Players

Sprint is essential for successful sport performance. Acceleration is necessary for every position in football. The ability to successfully accelerate is also an important determinant for more carried gaming activities. The eccen- tric strength of the hamstrings is an important task in sprint. The aim of our study was to test the correlation between the 30 m sprint and the eccentric strength of the hamstring by NordBord. The sample consisted of 48 professional football players (23.15±4.78 yr.; 180.5±5.42 cm; 76.5±7.94 kg) of the highest Slovak football league. The correlation between 30 m performance and average eccentric hamstring strength has been -0.0826. The correlation suggests that the sprint speed and eccentric strength of the hamstrings have not been associated 0 (t=-0.5619; df=46; p=0.5769). Correlation between 30 m performance and AVG/kg was -0.1317, indicating that the correlation between average weight and speed was not been significant. The eccentric strength has not been associated with a higher speed in the 30-m sprint test. However, more intervention studies are warranted.

Influence of the COVID-19 Lockdown and Restart on the Injury Incidence and Injury Burden in Men’s Professional Football Leagues in 2020: The UEFA Elite Club Injury Study

BackgroundStudies on football and the coronavirus disease 2019 (COVID-19) have mainly focused on the lockdown consequences for player fitness, the resumption of football training, and how to safely restart the league play, but injury data are scarce.ObjectiveTo describe the injury incidence and injury burden in men’s professional football teams during the pandemic year of 2020.MethodsNineteen teams in 12 countries prospectively registered data on player-exposure and time-loss injuries throughout 2020. All major football leagues were paused as a direct response to the pandemic in March 2020 and were thereafter completely cancelled or restarted after a lockdown interval of at least two months. Historical data from 43 teams in the same cohort during the five preceding years (2015–2019) were used as reference. Between-season and within-season comparisons were made for injury incidence (number of injuries per 1000 h) and injury burden (number of absence days per 1000 h) with 95% confidence intervals and interquartile ranges.ResultsThere was no increased match injury incidence or injury burden following the restart in 2020 compared with other time periods of 2020 and the corresponding periods 2015–2019. There was an increased training injury incidence and injury burden immediately during the lockdown in 2020, and they remained elevated also following the restart, being higher in 2020 compared with 2015–2019, respectively. The injury characteristics during the first months of the new 2020/21 season (August/September–December) were similar between the five teams that cancelled their 2019/20 season in March 2020 and the 14 teams that restarted their season in May/June 2020.ConclusionsThere was no increased match injury incidence or injury burden following the COVID-19 lockdown and restart of the football season in 2020, but training injury incidence and injury burden were elevated and higher than in 2015–2019.

The Negro Leagues Were Major Leagues: Historians Reappraise Black Baseball

The Negro Leagues Were Major Leagues: Historians Reappraise Black Baseball

A Comparative Study of Professional Players Injury in The Jordanian Football League for Manaseer between The Players of Irbid and Amman

The study aimed to compare the injuries of professional players in the Jordanian football league between the players of Irbid and Amman in terms of places of injury , type of injury and the most play centers of football players. The researcher used the descriptive method in the survey method to achieve the objective of the study. The questionnaire was used to collect the necessary data, And the interview and the validity and reliability of the tools were checked. The study was conducted on a sample of 62 players, 24 of whom were from Amman and 38 from Irbid. The results of the study indicated that the most places of injury were in the elbow, thigh and leg. The football players had the difference in Amman with an average score of 0.70, 0.66 and 0.57. The most frequent types of injuries were injuries to the players in Amman with an average of 0.83 and an average of 0.77 and an average of 0.77. And the average 0.48. The most play centers injury was in the guards of the players of Irbid and an average of 0.64 Oman attackers and an average of 0.60. In light of the results of the study, the researcher recommended that the football coaches Irbid and Amman warm up before the matches and make the development of physical qualities in a scientific manner and make the referees apply the law of football and the need to emphasize and punish players who deliberately injury opponents and prevent them from violent play.

Development of Player-Friendly Web-Based Golf League Management Application

Golf is played by millions around the world because of its accessibility to all age groups and the social nature of competition. One of the most popular ways to play with peers is through recurring league competitions. However, league play requires extensive management because of the information handling and coordination involved. This paper presents the development of a web application which facilitates league management by automating and consolidating management processes. Using this application, golfers can easily create and join leagues of peers, store player information, organize competitions, and update scores throughout play. While some golf league applications already exist, none of these alternatives provide sufficient flexibility and automation at no cost. To address this need, the presented application enables the simultaneous management of multiple leagues and courses. The application also automatically generates teams for each competition based on player handicaps. To reduce management workload, responsibilities are distributed amongst all players and scores can be input and viewed live. While existing alternatives address some of these needs, there are none which provide all these features on one platform. By automating these processes and consolidating them into one application, golfers will be able to focus on the competitive and social experience of their leagues.

Weighting the Position &amp; Skillset of Players in League of Legends Using Analytic Hierarchy Process

Today, esports such as League of Legends are a popular form of competition using video games. Many researchers have conducted studies in the esports field such as player psychology, training, and physical exercise; however, those that apply quantitative techniques are still scarce. In this paper, Analytic Hierarchy Process is proposed for weighting position and skillsets of players in League of Legends. It is hypothesized by the developer that pairwise comparison can be used to derive priority scale through the judgment of experts. A questionnaire is designed to obtain pairwise comparison from players which are then used to develop the priority scale. The empirical results obtained show the weightage of position and skillset of each player. This weightage shows the priorities of certain position compared to other positions, and the priorities of skillsets needed to perform well in each position, based on their judgment. The results can be used to determine the most suitable players for each position with the right skillset quantitatively and systematically.