scholarly journals The Impact of Circadian Misalignment on Athletic Performance in Professional Football Players

SLEEP ◽  
2013 ◽  
Vol 36 (12) ◽  
pp. 1999-2001 ◽  
Author(s):  
Roger S. Smith ◽  
Bradley Efron ◽  
Cheri D. Mah ◽  
Atul Malhotra
Keyword(s):  
Athletic Performance ◽  
Football Players ◽  
Professional Football ◽  
Circadian Misalignment ◽  
The Impact

scholarly journals Does facial width-to-height ratio predict Japanese professional football players’ athletic performance?

2016 ◽  
Vol 7 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Takayuki Fujii ◽  
Akira Goto ◽  
Haruto Takagishi
Keyword(s):  
Aggressive Behavior ◽  
Athletic Performance ◽  
Football Players ◽  
Professional Football ◽  
Height Ratio ◽  
Testosterone Levels ◽  
The Relationship

A number of studies have shown that facial width-to-height ratio (fWHR)—the distance between the two zygomatic arches (width) compared with the distance from the top of the lip to the bottom of the eyebrows (height)—is related to aggressive behavior and is reflective of testosterone levels. The purpose of this study was to examine the relationship between fWHR and the athletic performance of Japanese professional football players. Photographs of 343 Japanese professional football players were measured for fWHR and compared with the number of penalty cards (yellow and red) acquired by players and goals scored in the 2012 season. The results showed that fWHR was not associated with the number of goals scored in any football position. However, the number of penalty cards acquired was associated with fWHR in the forward offensive position. These findings showed that fWHR is not related to goals scored by Japanese football players, but is related to the penalty cards acquired in the offensive domain.

scholarly journals Football-related injuries are the major reason for the career end of professional male football players

2021 ◽  
Author(s):  
Matthias Koch ◽  
Martin Klügl ◽  
Borys Frankewycz ◽  
Siegmund Lang ◽  
Michael Worlicek ◽  
...  
Keyword(s):  
Health Status ◽  
Football Players ◽  
Professional Football ◽  
Prevention Strategies ◽  
Level Of Evidence ◽  
Cross Sectional ◽  
Professional Career ◽  
Symptoms Of Depression ◽  
History Of ◽  
The Impact

Abstract Purpose Little is known about the consequences of injuries on professional male football players’ career and retirement period. The aim of this study is to investigate the impact of injuries that male professional football players endure during their career, reasons for the end of their career and the post-career phase of retirement. Methods In a retrospective cross-sectional cohort study, retired male professional football players of the German Bundesliga were investigated by a standardised questionnaire to analyse the history of injuries sustained during their professional football career, the reasons for ending their career, their current health status and their suggestions for future prevention strategies. Results Most of the 116 analysed players (n = 73 (62.9%)) stated an injury as the reason for ending their professional career. Relevant injuries were mainly located in the lower extremities (n = 587 (61.3%)) with a focus on the knee (p < 0.001) and ankle (p < 0.001). A significant majority of the participants who had retired due to injury described degenerative symptoms, such as pain or instability, and were diagnosed with osteoarthritis after retirement (p < 0.001). These players had also often been affected by symptoms of depression during their career, which had decreased significantly after retirement. Moreover, players who had not retired due to injury had significantly better overall health status and quality of life after retirement. Conclusion Football-related injuries have a significant impact on the career end of professional male football players and their health status after retirement. Future prevention strategies need to particularly address injuries to the knees and ankles and to implement measures for preventing osteoarthritis after retirement. Level of evidence Level III

Can Professional Football Players Adapt to Air Pollution? Evidence From China

2021 ◽  
pp. 152700252110497
Author(s):  
Yu Qin ◽  
Jing Wu ◽  
Rongjie Zhang
Keyword(s):  
Air Pollution ◽  
Research Question ◽  
Personal Attributes ◽  
Pollution Level ◽  
Football Players ◽  
Professional Football ◽  
Primary Research ◽  
Negative Effects ◽  
Home Advantage ◽  
The Impact

In this paper, we study the impact of air pollution on Chinese professional football players’ performance. Our primary research question is whether the negative effects of air pollution can be mitigated by adaptation, and which cohort of players can have higher adaptability. We find that a higher pollution level during the game, relative to the adapted pollution level in players’ home cities, has a negative and significant impact on the players’ efforts and accuracy. The impact of non-adapted air pollution can be greatly offset by the home advantage, but not by personal attributes such as the higher ability.

scholarly journals Mandatory lockdown impairs performance in professional soccer players.

2022 ◽  
Vol 18 (67) ◽  
pp. 28-42
Author(s):  
Iván Peña-González ◽  
Alejandro Javaloyes ◽  
Fidel Agulló ◽  
Manuel Sempere ◽  
Aitor Soler ◽  
...  
Keyword(s):  
Training Programs ◽  
High Variability ◽  
Physical Workload ◽  
Soccer Players ◽  
Football Players ◽  
Professional Football ◽  
Professional Soccer ◽  
Sport Competition ◽  
Individual Self ◽  
The Impact

COVID-19 caused a total halt in sport competition during 2020. The purpose of this study was to analyze the changes between pre- and post-lockdown competitive periods in the players’ workload variables in competition. Seventeen professional football players were monitored using a WIMU PRO® inertial device throughout the 2019-20 season. Anthropometric and physical fitness were assessed with the aim to relate possible associations between these characteristics and the workload changes in the pre- and post-lockdown periods. During the lockdown, players carried out an 8-week guided self-training. There was a general decrement in the players’ physical workload demands in competition, and the parameters related to high-intensity actions as accelerations and decelerations (-8.96% [ES: 0.64] and -11.04% [ES: 0.77] respectively; p < .05), Ind HSR (-35.57% [ES: 0.92]; p = .002), HMLD (-8.58% [ES: 0.66]; p = .016), PLOAD (-7.03% [ES: 0.54]; p = .047) and Vmax (-3.80% [ES: 0.65]; p = .016) can be highlighted. The results showed high negative correlations between match workload variables prior to the lockdown and the percentage of change in these variables after the lockdown period. Individual percentages of change showed high variability in players’ changes. Individual self-training programs should be reviewed to minimize the impact of a “detraining” period in players’ physical performance during possible new lockdown periods.

scholarly journals The Impact of COVID-19 on Physical Performance and Mental Health—A Retrospective Case Series of Belgian Male Professional Football Players

2021 ◽  
Vol 3 ◽  
Author(s):  
Jente Wagemans ◽  
Peter Catteeuw ◽  
Jan Vandenhouten ◽  
Jordi Jansen ◽  
Xander de Corte ◽  
...  
Keyword(s):  
Mental Health ◽  
Physical Performance ◽  
Well Being ◽  
Professional Athletes ◽  
Football Players ◽  
Professional Football ◽  
Jump Performance ◽  
Significant Difference ◽  
Stress Levels ◽  
The Impact

Rationale: As every season, physical performance of players of Royal Antwerp FC's first team was regularly tested and mental well-being and mood were assessed during football season 2020–2021. Just like in the general population, several professional athletes were infected by SARS-CoV-2 during that season. COVID-19 is a complex disorder affecting multiple body systems, potentially damaging lungs, affecting the cardiovascular system or causing muscle weakness. Therefore, the impact of COVID-19 on performance was a major concern for the affected football players and their entourage.Objectives: To retrospectively examine the influence of COVID-19 on physical performance and mental health in professional football athletes during the season 2020–2021.Methods: Thirty-three professional athletes (age: 25.37 ± 4.11 years; height: 182.75 ± 7.62 cm; weight: 78.90 ± 8.97 kg) of a Belgian first division football club were assessed weekly during the 2020-2021 season. Weekly assessments comprised strength values of the hamstrings, hip abductors and hip adductors, jump performance, a modified Hooper questionnaire to assess mental status and nose swab PCR tests for COVID-19. Data analysis was performed from 2 weeks prior to COVID-19 contamination up to 8 weeks after the first positive test. Post-hoc Bonferroni correction was applied when performing statistical analysis.Results: Eleven players tested positive for COVID-19. Duration of contamination was 13 ± 7 days. There was no statistically significant difference before and after COVID-19 infection for jump performance, and adductor and abductor muscle strength (p &gt; 0.05). Functional hamstring strength improved significantly 2 weeks (MD: 41.48; 95%CI: −3.79 to 86.75; p = 0.009) and 4 weeks (MD: 34.76; 95%CI: −8.91 to 78.42; p = 0.019) after COVID-19, whereas mood (MD: −0.60; 95%CI: −1.46 to 0.26; p = 0.041), stress levels (MD: −0.83; 95%CI: −1.85 to 0.20; p = 0.020) and total wellness (MD: −2.41; 95%CI: −5.25 to 0.43; p = 0.015) showed a significant reduction 8 weeks after confirmed COVID-19.Conclusion: Physical performance varied considerably across outcomes before and 8 weeks after COVID-19 contamination in a sample of first division football players. However, affected football players' overall well-being, stress levels and mood diminished after a positive COVID-19 test.

scholarly journals KNEE DEFORMITES IN FOOTBALL PLAYERS – META ANALYSIS

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Marko Joksimović ◽  
Ana Lilić ◽  
Novica Gardašević ◽  
Kosta Goranović
Keyword(s):  
Knee Joint ◽  
Critical Period ◽  
Meta Analysis ◽  
Football Players ◽  
Genu Varum ◽  
Professional Football ◽  
Knee Angle ◽  
Increased Risk ◽  
The Impact ◽  
Metabolic Hormone

In football, the knee joint is one of the most stressed joints during the game itself, especially for professional football players where there are higher physical requirements. Factors such as race, weight, vitamin contribution, metabolic/ hormone disorders, environment and football practice can affect the knee angle. The aim of the study was to determine the impact of playing football on changes in the knee joint. The following electronic databases were used to search the literature: PubMed, MEDLINE, Google Scholar, EBSCO in the period from 2006 to 2019. The sample of respondents included the male participants who played football, who were of different training status and age categories. The studies were included only if there were differences in the angle of the knee – genu varum or genu valgum in football players. Most researchers concluded that there are significant differences in the knee joint in respondents who played football and respondents who play no sports. The authors believe that the most critical period in which deformities can occur is the period of adolescence, while later this process slows down. People who have played other sports, as well as football players, have an increased risk of developing knee deformities. From the reviewed works, we can conclude that intense physical exercise and frequent competition can encourage the development of deformities.

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