scholarly journals WITHDRAWN: Is there any association between the deficits found in the isokinetic evaluation with the functional performance of professional soccer players?

2020 ◽  
Vol 45 ◽  
pp. e1
Author(s):  
José Roberto de Souza Júnior ◽  
Tânia Cristina dias da Silva-Hamu ◽  
Maikon Gleibyson Rodrigues dos Santos ◽  
João Pedro da Silva Carto ◽  
Thiago Vilela Lemos
Keyword(s):  
Functional Performance ◽  
Soccer Players ◽  
Professional Soccer ◽  
Isokinetic Evaluation

Is there any association between the deficits found in the isokinetic evaluation with the functional performance of professional soccer players?

2018 ◽  
Vol 31 ◽  
pp. e1
Author(s):  
José Roberto de Souza Júnior ◽  
Tânia Cristina dias da Silva-Hamu ◽  
Maikon Gleibyson Rodrigues dos Santos ◽  
João Pedro da Silva Carto ◽  
Thiago Vilela Lemos
Keyword(s):  
Functional Performance ◽  
Soccer Players ◽  
Professional Soccer ◽  
Isokinetic Evaluation

Off-Season Effects on Functional Performance, Body Composition, and Blood Parameters in Top-Level Professional Soccer Players

2017 ◽  
Vol 31 (4) ◽  
pp. 939-946 ◽  
Author(s):  
Bernardo Requena ◽  
Inmaculada García ◽  
Luis Suárez-Arrones ◽  
Eduardo Sáez de Villarreal ◽  
José Naranjo Orellana ◽  
...  
Keyword(s):  
Body Composition ◽  
Functional Performance ◽  
Blood Parameters ◽  
Soccer Players ◽  
Professional Soccer

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.

Analysis of additional variables from isokinetic evaluation of professional soccer players

2021 ◽  
Vol 47 ◽  
pp. e1
Author(s):  
Alef Cavalcanti Matias Barros ◽  
Daniel Germano Maciel ◽  
Mikhail Santos Cerqueira ◽  
Vinicíus Vieira Alencar Caldas ◽  
Glauko André F Dantas ◽  
...  
Keyword(s):  
Soccer Players ◽  
Professional Soccer ◽  
Isokinetic Evaluation

scholarly journals Assessment of Lower Body and Abdominal Strength in Professional Soccer Players

2019 ◽  
Vol 70 (1) ◽  
pp. 15-23
Author(s):  
Marcos A. Michaelides ◽  
Koulla M. Parpa ◽  
Anthos I. Zacharia
Keyword(s):  
Functional Performance ◽  
Soccer Players ◽  
Lower Body ◽  
Professional Soccer ◽  
Isokinetic Test ◽  
Body Strength ◽  
Lower Body Strength ◽  
Observational Design ◽  
Flexion And Extension ◽  
Abdominal Strength

Abstract The purpose of this study was to evaluate abdominal strength in professional soccer players and compare the findings to their lower body strength. An observational design was used to examine abdominal and lower body strength using two functional performance tests (a lower body isokinetic test and an isometric abdominal test, respectively). One hundred and thirty-two professional male soccer players from Cyprus’s first and second divisions participated in this study. Testing included three and twenty-five maximal concentric flexion and extension repetitions at angle speeds of 60°/s (degrees/second) and 300°/s, respectively. On a separate occasion, participants completed two trials on an isometric device (ABTEST Gen. 3 system) for evaluation of abdominal strength. At both isokinetic speeds of 300°/s and 60°/s, abdominal strength had low to moderate significant correlations (p < .05) with quadriceps and hamstring strength. Coefficients of determination (R2) demonstrated that the variability in isokinetic variables accounted for only 14-16% of the variability of abdominal strength. Abdominal strength appears to be high in professional soccer players, but is not dependent on the sports level and/or a playing position. The results of this study demonstrate that abdominal strength and knee joint strength need to be evaluated separately.

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.

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