scholarly journals Altered Neurochemistry in Former Professional Soccer Players without a History of Concussion

2015 ◽  
Vol 32 (17) ◽  
pp. 1287-1293 ◽  
Author(s):  
Inga K. Koerte ◽  
Alexander P. Lin ◽  
Marc Muehlmann ◽  
Sai Merugumala ◽  
Huijun Liao ◽  
...  
Keyword(s):  
Soccer Players ◽  
Professional Soccer ◽  
History Of

scholarly journals Preseason intrinsic risk factors—associated odds estimate the exposure to proximal lower limb injury throughout the season among professional football players

2018 ◽  
Vol 4 (1) ◽  
pp. e000334 ◽  
Author(s):  
Rogério Ferreira Liporaci ◽  
Marcelo Camargo Saad ◽  
Débora Bevilaqua-Grossi ◽  
Marcelo Riberto
Keyword(s):  
Risk Factors ◽  
Functional Performance ◽  
Performance Evaluations ◽  
Soccer Players ◽  
Football Players ◽  
Lower Limb Injury ◽  
Score System ◽  
Professional Soccer ◽  
Soccer Teams ◽  
History Of

Background/aimFootball players frequently face the occurrence of non-contact musculoskeletal injuries. The purpose of the study was to verify whether the evaluation of combined risk factors could produce a score system to determine the probability of injury in football players during the Brazilian football season.MethodsSixty-two male professional soccer players recruited from the first and second division soccer teams, with ages between 18 and 36 years. Functional performance evaluations were carried out at the beginning of the preseason which included strength and jumping tests, history of injuries and characteristics of athletes.Results and conclusionsThe results were grouped and a score/monogram was constructed.

Psychological Predictors of Injury among Professional Soccer Players

2011 ◽  
Vol 20 (5-6) ◽  
pp. 5-36 ◽  
Author(s):  
Casper Devantier
Keyword(s):  
Trait Anxiety ◽  
Medical Staff ◽  
Psychological Factors ◽  
Coping Resources ◽  
Soccer Players ◽  
Psychological Predictors ◽  
Sport Injuries ◽  
Professional Soccer ◽  
Injury Occurrence ◽  
History Of

Psychological Predictors of Injury among Professional Soccer Players Objectives: Numerous empirical studies suggest that specific psychological factors influence the frequency and severity of sport injuries. The main purpose of the present study is to outline the psychological factors, which predict increased injury vulnerability among professional male soccer players in Denmark. Based on the Stress-Injury Model by Williams & Anderson (1998) it is hypothesized that low coping resources, high competitive trait anxiety, and history of previous injuries would be positively related to an increased risk of injury occurrence and severity. Methods: The soccer players (N = 87) were asked to report history of previous injuries within the last 12 months. Furthermore, 2 questionnaires were used; Competitive Trait Anxiety Test, and Athletic Coping Skills Inventory - 28 (ACSI-28). Injuries were prospectively recorded throughout a period of approximately 3 months by the team's medical staff (doctors and physiotherapists). Results: Study findings clearly suggest that history of previous injury and coping with adversity are the best predictors of injury occurrence. These factors explained between 7 % and 11 % of the total variance of injury occurrence and days lost due to injury respectively. Furthermore, the same variables were found very successful in prediction injury occurrence. Conclusions: The findings support the suggestions that psychological factors can be utilized as a predictive measurement to sport injuries, which should be considered by coaches and medical staff in order to reduce vulnerability to injury.

scholarly journals Knee Flexor Eccentric Strength, Hamstring Muscle Volume and Sprinting in Elite Professional Soccer Players with a Prior Strained Hamstring

Biology ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 69
Author(s):  
Alberto Mendez-Villanueva ◽  
Francisco Javier Nuñez ◽  
Jose Luis Lazaro-Ramirez ◽  
Pablo Rodriguez-Sanchez ◽  
Marc Guitart ◽  
...  
Keyword(s):  
Biceps Femoris ◽  
Muscle Volume ◽  
Soccer Players ◽  
Hamstring Muscle ◽  
Knee Flexor ◽  
Hamstring Strain ◽  
Professional Soccer ◽  
Knee Strength ◽  
History Of ◽  
Flexor Strength

The aim was to determine if players with a prior hamstring strain injury (HSI) exhibit bilateral deficits in knee flexor eccentric strength and hamstring muscle volume and differences in sprinting performance compared with players without a history of HSIs. Forty-six male professional soccer players participated in this study. Eccentric knee flexor strength, hamstring muscle volume (MRI), and a 20-m running sprint test (5- and 10-m split time) were assessed at the start of the preseason. Eccentric knee strength of the previously injured limbs of injured players was greater (ES: 1.18–1.36) than the uninjured limbs in uninjured players. Previously injured limbs showed possibly larger biceps femoris short heads (BFSh) and likely semitendinosus (ST) muscle volumes than the contralateral uninjured limbs among the injured players (ES: 0.36) and the limbs of the uninjured players (ES: 0.56), respectively. Players who had experienced a previous HSI were possibly slower in the 5-m (small ES: 0.46), while unclear differences were found in both the 10-m and 20-m times. Players with a prior HSI displayed greater eccentric knee flexor strength, possibly relatively hypertrophied ST and BFSh muscles, and possibly reduced 5-m sprinting performances than previously uninjured players. This can have implication for the design of secondary hamstring muscle injury prevention strategies.

Muscle Flexibility as a Risk Factor for Developing Muscle Injuries in Male Professional Soccer Players

2003 ◽  
Vol 31 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Erik Witvrouw ◽  
Lieven Danneels ◽  
Peter Asselman ◽  
Thomas D'Have ◽  
Dirk Cambier
Keyword(s):  
At Risk ◽  
Risk Factor ◽  
Muscle Injury ◽  
Adductor Muscle ◽  
Quadriceps Muscle ◽  
Soccer Players ◽  
Muscle Injuries ◽  
Professional Soccer ◽  
History Of ◽  
Musculoskeletal Lesion

Background Muscular tightness is frequently postulated as an intrinsic risk factor for the development of a muscle injury. However, very little prospective data exist to prove this. Hypothesis Increased muscle tightness identifies a soccer player at risk for a subsequent musculoskeletal lesion. Study Design Prospective cohort study. Methods We examined 146 male professional soccer players before the 1999–2000 Belgian soccer competition. None of the players had a history of muscle injury in the lower extremities in the previous 2 years. The flexibility of the hamstring, quadriceps, adductor, and calf muscles of these players was measured goniometrically before the start of the season. All of the examined players were monitored throughout the season to register subsequent injuries. Results Players with a hamstring (N = 31) or quadriceps (N = 13) muscle injury were found to have significantly lower flexibility in these muscles before their injury compared with the uninjured group. No significant differences in muscle flexibility were found between players who sustained an adductor muscle injury (N = 13) or a calf muscle injury (N = 10) and the uninjured group. Conclusions These results indicate that soccer players with an increased tightness of the hamstring or quadriceps muscles have a statistically higher risk for a subsequent musculoskeletal lesion. Clinical Significance Preseason hamstring and quadriceps muscle flexibility testing can identify male soccer players at risk of developing hamstring and quadriceps muscle injuries.

scholarly journals Mindfulness in Male Soccer Players: A Cross-Sectional Study

2020 ◽  
pp. 388-399
Author(s):  
Emre Ozan TİNGAZ ◽  
Oktay KIZAR ◽  
Celal BULĞAY ◽  
Ebru Çetin
Keyword(s):  
Personal Information ◽  
Cross Sectional Study ◽  
Soccer Players ◽  
Professional Status ◽  
Mental Training ◽  
Cross Sectional ◽  
Psychological Performance ◽  
Professional Soccer ◽  
Significant Difference ◽  
History Of

The present study aims to determine whether mindfulness shows a significant difference based on the male soccer players' amateur/ professional status, position, playing experience, history of receiving mentorship, psychological performance counselling or therapy from a sports psychologist, and status of performing mental training. The study was carried out with 233 adult male soccer players and the Mindfulness Inventory for Sport and Personal Information Form was applied to the participants. As a result of the study, it was found that professional soccer players had higher mindfulness levels compared to amateur soccer players. It was observed that mindfulness levels differed in favor of soccer players who received mentorship or psychological performance counselling, performed mental training and had more experience in sports. It was also observed that attackers had higher mindfulness levels compared to midfielders.

scholarly journals Comparison of Official and Friendly Matches through Acceleration, Deceleration and Metabolic Power Measures: A Full-Season Study in Professional Soccer Players

2021 ◽  
Vol 18 (11) ◽  
pp. 5980
Author(s):  
Hadi Nobari ◽  
Sara Mahmoudzadeh Khalili ◽  
Rafael Oliveira ◽  
Alfonso Castillo-Rodríguez ◽  
Jorge Pérez-Gómez ◽  
...  
Keyword(s):  
Effect Size ◽  
Total Duration ◽  
Soccer Players ◽  
Metabolic Power ◽  
Professional Soccer ◽  
Premier League ◽  
Small Effect Size ◽  
Moderate Effect Size ◽  
High Effort

Soccer is a popular team sport and highly demanding activity that requires high effort and long-term training plans. The goals of this study were to compare the accelerations, decelerations and metabolic power between official and friendly full matches, between the first and second halves of the matches, and between both halves of official and friendly matches. Twelve professional soccer players (age, 28.6 ± 2.7 years; height, 182.1 ± 8.6 cm; body mass, 75.3 ± 8.2 kg; BMI, 22.6 ± 0.7 kg/m2) participated in this study. A total of 33 official and 10 friendly matches were analyzed from the Iranian Premier League. All matches were monitored using GPSPORTS systems Pty Ltd. The following variables were selected: total duration of the matches, metabolic power, accelerations Zone1 (<2 m·s−2) (AccZ1), accelerations Zone2 (2 to 4 m·s−2) (AccZ2), accelerations Zone3 (>4 m·s−2) (AccZ3), decelerations Zone1 (<−2 m·s−2) (DecZ1), decelerations Zone2 (−2 to −4 m·s−2) (DecZ2) and decelerations Zone3 (>−4 m·s−2) (DecZ3). The major finding was shown in metabolic power, where higher values occurred in friendly matches (p < 0.05 with small effect size). Furthermore, total duration, AccZ3, DecZ1, DecZ2, and DecZ3 were revealed to be higher in official matches, while AccZ1 and AccZ2 were higher in friendly matches. The second half of the official matches revealed higher values for total duration compared to friendly matches (p < 0.05, moderate effect size). In conclusion, this study observed higher values of metabolic power in friendly matches compared to official matches. AccZ3, DecZ1, DecZ2, and DecZ3 were higher in official matches, while AccZ1 and AccZ2 were higher in friendly matches.

Do elite soccer players cover longer distance when losing? Differences between attackers and defenders

2020 ◽  
pp. 174795412098227
Author(s):  
Carlos Lago-Peñas ◽  
Anton Kalén ◽  
Miguel Lorenzo-Martinez ◽  
Roberto López-Del Campo ◽  
Ricardo Resta ◽  
...  
Keyword(s):  
New York ◽  
High Speed ◽  
Large Scale ◽  
Tracking System ◽  
Soccer Players ◽  
Running Performance ◽  
Situational Variables ◽  
Total Distance ◽  
Professional Soccer ◽  
Score Line

This study aimed to evaluate the effects playing position, match location (home or away), quality of opposition (strong or weak), effective playing time (total time minus stoppages), and score-line on physical match performance in professional soccer players using a large-scale analysis. A total of 10,739 individual match observations of outfield players competing in the Spanish La Liga during the 2018–2019 season were recorded using a computerized tracking system (TRACAB, Chyronhego, New York, USA). The players were classified into five positions (central defenders, players = 94; external defenders, players = 82; central midfielders, players = 101; external midfielders, players = 72; and forwards, players = 67) and the following match running performance categories were considered: total distance covered, low-speed running (LSR) distance (0–14 km · h−1), medium-speed running (MSR) distance (14–21 km · h−1), high-speed running (HSR) distance (>21 km · h−1), very HSR (VHSR) distance (21–24 km · h−1), sprint distance (>24 km · h−1) Overall, match running performance was highly dependent on situational variables, especially the score-line condition (winning, drawing, losing). Moreover, the score-line affected players running performance differently depending on their playing position. Losing status increased the total distance and the distance covered at MSR, HSR, VHSR and Sprint by defenders, while attacking players showed the opposite trend. These findings may help coaches and managers to better understand the effects of situational variables on physical performance in La Liga and could be used to develop a model for predicting the physical activity profile in competition.

Session-to-session variations of internal load during different small-sided games: a study in professional soccer players

2021 ◽  
pp. 1-13
Author(s):  
Saeid Younesi ◽  
Alireza Rabbani ◽  
Filipe Manuel Clemente ◽  
Hugo Sarmento ◽  
António Figueiredo
Keyword(s):  
Soccer Players ◽  
Internal Load ◽  
Professional Soccer
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