scholarly journals Assessment of professional Argentine football players using the UNCa test

2021 ◽  
Vol 38 (5) ◽  
pp. 327-331
Author(s):  
Martin Fernando Bruzzese ◽  
Nelio Eduardo Bazán ◽  
Nicolás Antonio Echandia ◽  
Leandro Gabriel Vilariño Codina ◽  
Hugo Alberto Tinti ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Soccer Players ◽  
Test Material ◽  
Football Players ◽  
Maximum Oxygen Consumption ◽  
Gas Analyzer ◽  
Professional Soccer ◽  
Gas Measurement ◽  
First Time ◽  
Final Speed

Objective: To evaluate the maximum oxygen consumption (VO2max) and the Maximum Aerobic Speed (MAS) with direct and portable measurement in field, in professional soccer players using the UNCa test. Material and method: 9 professional soccer players (age: 26.8±5.12 years, mass: 78.7±5.8 kg, height: 177.3±5.8 cm), belonging to the first and promotion categories of AFA soccer league, were measured in the field with the UNCa test using direct gas measurement. A subsample of 3 players was also measured on treadmill. On treadmill and in the field, the same Medgraphics® VO2000 gas analyzer was used. Results: In the field, a VO2max of 52.18±5.86 ml/kg/min, and a MAS of 14.8±1.3 km/h were found. Also, a correlation between VO2max and MAS of r = 0.75, and between MAS and the final speed reached (FSR) r=0.91. In the subsample, no differences were found between treadmill and field in VO2max; 46.6±1.4 ml/kg/min and 48.1±2.2 ml/kg/min (p <0.001) respectively. Differences between MAS are shown; 17.0±0.0 km/h for the treadmill and 13.7±1.5 km/h for the field (p <0.001) replicating the protocol. Conclusion: If professional players of the Argentine Football Association (AFA) were measured directly and in the field, applying the UNCa test for the first time. The VO2max and MAS values were slightly lower than those published in the bibliography

scholarly journals DIFFERENCES IN MAXIMUM OXYGEN CONSUMPTION OF FOOTBALL PLAYERS OF DIFFERENT POSITIONS IN THE TEAM

2021 ◽  
pp. 13-18
Author(s):  
Vladimir Ivanek ◽  
Branko Đukić ◽  
Branimir Mikić ◽  
Mane Mirković ◽  
Martina Rezić
Keyword(s):  
Oxygen Consumption ◽  
Statistical Significance ◽  
Body Height ◽  
Morphological Characteristics ◽  
Football Players ◽  
Functional Abilities ◽  
Maximum Oxygen Consumption ◽  
Training Process ◽  
Starting Point ◽  
Significant Difference

The aim of this research is to determine the differences between the aerobic functional abilities of football players from different positions in the team, which should serve as a starting point in planning and monitoring the training process of football players. VO2max, as a basic parameter of functional abilities, was obtained by applying a laboratory progressive test on the treadmill. The sample of respondents was composed of 57 respondents (GOD = 22.47 ± 3.78SD), football players of clubs competing in the first and second leagues of Serbia from the area of Vojvodina, of which 8 goalkeepers, 16 defensive, 17 midfielders and 16 attackers. To test the functional capabilities (oxygen consumption - VOmax), we used a test of progressive continuous load on the treadmill with increasing load per minute through a "breath-by-breath" gas analyzer (Quark PFT ErgoCPET, Cosmed, Italy), which gave data on ventilation and spiroergometric parameters of the subjects by different positions in the team. Anthropometric measures of body weight- (TM) and body height- (TV) were applied to test the morphological characteristics of the subjects. SPSS 20.0 software package was used for data processing. In order to determine the statistically significant differences of the measured variables between football players by positions, a one-factor anova of different groups, the level of statistical significance (p <0.05) was used. The obtained results of maximum oxygen consumption indicated that there is a statistically significant difference in aerobic abilities between goalkeepers and players in other positions, and they are certainly a consequence of the physiological requirements placed before them and the different training process. The highest mean value of VO2 max had midfielders (53.3 ± 1.9 ml / kg / min), followed by attackers (52.9 ± 4.4 ml / kg / min), defensive players (51.8 ± 3, 3 ml / kg / min) while the lowest values were recorded in the goalkeeper (50.5 ± 1.8 ml / kg / min). There is a logical conclusion that the need for running midfielders is the greatest, and the goalkeeper the least, and that the results are the result of training processes and different requirements for individual positions in the team.

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.

The Effect of Body Mass on Eccentric Knee-Flexor Strength Assessed With an Instrumented Nordic Hamstring Device (Nordbord) in Football Players

2016 ◽  
Vol 11 (6) ◽  
pp. 721-726 ◽  
Author(s):  
Martin Buchheit ◽  
Yannick Cholley ◽  
Mark Nagel ◽  
Nicholas Poulos
Keyword(s):  
Body Mass ◽  
Soccer Players ◽  
Football Players ◽  
Knee Flexor ◽  
Professional Soccer ◽  
Australian Football League ◽  
Training History ◽  
Absolute Strength ◽  
Australian Football ◽  
Flexor Strength

Purpose:To examine the effect of body mass (BM) on eccentric knee-flexor strength using the Nordbord and offer simple guidelines to control for the effect of BM on knee-flexor strength.Methods:Data from 81 soccer players (U17, U19, U21, senior 4th French division, and professionals) and 41 Australian Football League (AFL) players were used for analysis. They all performed 1 set of 3 maximal repetitions of the bilateral Nordic hamstring exercise, with the greatest strength measure used for analysis. The main regression equation obtained from the overall sample was used to predict eccentric knee-flexor strength from a given BM (moderate TEE, 22%). Individual deviations from the BM-predicted score were used as a BM-free index of eccentric knee- flexor strength.Results:There was a large (r = .55, 90% confidence limits .42;.64) correlation between eccentric knee-flexor strength and BM. Heavier and older players (professionals, 4th French division, and AFL) outperformed their lighter and younger (U17–U21) counterparts, with the soccer professionals presenting the highest absolute strength. Professional soccer players were the only ones to show strength values likely slightly greater than those expected for their BM.Conclusions:Eccentric knee-flexor strength, as assessed with the Nordbord, is largely BM-dependent. To control for this effect, practitioners may compare actual test performances with the expected strength for a given BM, using the following predictive equation: Eccentric strength (N) = 4 × BM (kg) + 26.1. Professional soccer players with specific knee-flexor-training history and enhanced neuromuscular performance may show higher than expected values.

scholarly journals Physique, Body Composition and Maximum Oxygen Consumption of Selected Soccer Players of Kunimi High School, Nagasaki, Japan

2006 ◽  
Vol 25 (4) ◽  
pp. 291-297 ◽  
Author(s):  
Yasuaki Tahara ◽  
Kazuhiko Moji ◽  
Noriaki Tsunawake ◽  
Rika Fukuda ◽  
Masao Nakayama ◽  
...  
Keyword(s):  
High School ◽  
Body Composition ◽  
Oxygen Consumption ◽  
Soccer Players ◽  
Maximum Oxygen Consumption

scholarly journals Ratio of maximum hamstring torque to maximum quadriceps torque in professional basketball and soccer players

2021 ◽  
Vol 7 (4) ◽  
pp. 8-18
Author(s):  
A. Kukrić ◽  
M. Joksimović ◽  
B. Petrović ◽  
F. Latino ◽  
R. Pavlović ◽  
...  
Keyword(s):  
Knee Joint ◽  
Peak Torque ◽  
Soccer Players ◽  
Football Players ◽  
Basketball Players ◽  
Professional Basketball ◽  
Professional Soccer ◽  
Lower Extremity Muscle ◽  
Significant Difference ◽  
The Difference

Purpose: The aim of the study was to determine the differences between football players and basketball players in the mean absolute values ​​of maximum torque flexors and extensors, ratio of maximum hamstring torque to maximum quadriceps torque dominant (DOM) non-dominant (ND) leg and differences in bilateral imbalance of flexor muscles and knee extensors. Material and methods: The research included a sample of 39 professional athletes. The first subsample included 19 professional basketball players while the second subsample included 20 professional soccer players. Results: Based on the results of the torques of the extensors in the knee joint of the DOM and ND legs, it was established that there is no statistically significant difference between basketball players and football players. However, a statistically significant difference was found in the torque flexors of the knee joint DOM (p≤0.01) and ND (p≤0.00) of the leg between basketball players and football players. On the other hand, the results of the research indicate that the difference between basketball players and football players in the ratio of Hamstrings peak torque to Quadriceps peak torque was recorded only in the ND leg (p≤0.02), while the difference in the DOM leg is not statistically significant. The results of our study indicate that basketball players have a higher percentage of imbalances compared to football players, especially in m. hamstrings. Conclusion: This study provides normative data on populations specific to soccer and basketball, but does not provide evidence of the ability of the isokinetic assessment of lower extremity muscle strength to predict injuries to football players and basketball players.

scholarly journals MORPHOLOGICAL FEATURES AND AEROBIC CAPACITY IN SOCCER PLAYERS WITH HYPERMOBILITY OF JOINTS

2021 ◽  
Vol 124 (2) ◽  
pp. 36-43
Author(s):  
Yevhen Hlushchuk ◽  
Oleh Nekhanevych ◽  
Viacheslav Khomenko
Keyword(s):  
Body Composition ◽  
Oxygen Consumption ◽  
Connective Tissue ◽  
Clinical Signs ◽  
Joint Hypermobility ◽  
Morphological Features ◽  
The Body ◽  
Aerobic Performance ◽  
Football Players ◽  
Maximum Oxygen Consumption

Intensification of physical loads in modern soccer requires athletes to develop a high level of general, speed and special endurance. Athletes with signs of connective tissue dysplasia, one of the most frequent manifestations of which is hypermobility of the joints, are of special interest to coaches and doctors when building training and competitive loads in football. Systematic involvement of connective tissue in the dysplastic process in hypermobility of joints can affect the development of physical qualities, physical fitness, level of functional status and aerobic performance and can be the cause of negative sports results. Failure to take into account the characteristics of such athletes can be the cause of acute physical exertion. The aim of this work was to establish the morphological features and level of aerobic productivity in football players with signs of hypermobility of the joints. To achieve this goal, the data of 46 high-class football players of the Azerbaijani national football team aged 16 to 34 were analyzed. Determination of morphometric parameters was performed using anthropometry, body composition was assessed using impedancemetry, clinical signs of joint hypermobility were diagnosed by R. Beighton criteria, aerobic performance was assessed directly using gas analysis during exercise on an exercise bike. According to the results of the study of the level of hypermobility of the joints, it was found that 56.5% of football players had normal mobility in the joints, 30.4% - moderate and 13.0% - significant hypermobility. In football players with significant joint hypermobility, the level of aerobic productivity was the lowest and was 53.3±2.5 ml/min/kg, while the rate of maximum oxygen consumption was the highest in the group with normal joint mobility (59.5±1.2 ml/min/kg). Investigating the dynamics of the value of maximum oxygen consumption in the groups, a statistically significant decrease in its value with increasing degree of hypermobility was found. Thus, in the group with normal mobility the increase in VO2 max was 5.3±0.2 ml/min/kg, in the group with moderate hypermobility - 3.7±0.2 ml/min/kg and in the group with significant hypermobility - 1,7±0.2 ml/min/kg. A study of body composition in groups divided by the level of hypermobility of the joints, indicated that the lowest level of total water was in the group with severe hypermobility. Such dynamics occurred due to a decrease in the level of extracellular fluid, which may indicate a violation of metabolic processes in the intercellular matrix. There was a statistically significant decrease in the level of maximum oxygen consumption with increasing degree of hypermobility of the joints. The difference in the response of the functional systems of the body of football players during general endurance training is proved. Establishing relationships between body composition and maximum oxygen consumption can be the basis for regulating training and competitive loads and for sports selection.

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.

The burden of muscle injuries in youth football

2018 ◽  
Vol 66 (1) ◽  
Keyword(s):  
Muscle Injury ◽  
Injury Rate ◽  
Young Male ◽  
Soccer Players ◽  
Football Players ◽  
Muscle Injuries ◽  
Youth Soccer ◽  
Professional Soccer ◽  
Youth Football ◽  
Substantial Problem

Background: Muscle injuries affect up to 72% of professional soccer players within one season and there are well reviewed, but muscle injuries in youth soccer players are not widely documented. The aim of this study was to investigate incidence, localization, pathomechanism and point of time of indirect muscle injuries in youth soccer players. Methods: Prospective cohort study. 5 teams (U15, U16, U17, U18 and U21) with 110 young male football players (age 16,8 (14,3–21) years, height 174,5 (146,1–190,0) cm, weight 65,7 (35,5–84,6) kg) were monitored for 12 months. Every muscle injury was documented and monitored on a standardized evaluation score. Results: In total, 53 muscle injuries were registered. On average, a player sustained 0,4 muscle injuries per season. There was only one re-injury (2%). The injury rate was 1,5 injuries per 1000h match- or /training hours, the match injury rate (6,9) being 7,7 times higher than the training injury rate (0,9). Sixty-nine percent were functional muscle injuries. Thirty-seven percent of all muscle injuries affected the hamstrings group and twenty-eight percent the adductors. The most common pathomechanism was overload (28%). Most of the injuries were recorded during the last 15 minutes of a game or a training (39,6%). Conclusion: Muscle injuries are a substantial problem for players and clubs, also in young male football players. This study confirmed previous results showing that the injury rate during games is higher than during trainings and that hamstrings injuries are the most common muscle injuries in soccer. However, a prolonged study period is recommended to gain better statistical values.

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