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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Influence of beetroot supplementation on oxygen muscle saturation of semi-professional soccer players following a repeated sprint test

100%
Michailidis Y.
Central European Journal of Sport Sciences and Medicine
|
2023
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tom 42
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nr 02
2

Laboratory tests and game performance of young soccer players

75%
Lipinska P., Szwarc A.
Trends in Sport Sciences
|
2016
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tom 23
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nr 1
Introduction. Results of laboratory tests could be treated as a valuable source of information about players’ physical fitness. Aim of Study. The purpose of this study was to identify laboratory physical fitness tests that could be useful for predicting competences of 17-year-old soccer players. Material and Methods. Selected components of players’ physical fitness were assessed and the effectiveness of game performance was evaluated in a group of eighteen young soccer players. The following parameters were measured: anthropometric measurements, anaerobic and aerobic capacity, locomotion speed, explosive strength of the lower limbs, reaction time, and balance. Results. The results achieved in laboratory and exercise tests were converted into ranks. An assessment of players’ effectiveness in one-on-one games was made using special oneon-one test methodology, and a list of ranked game performances was prepared. On the basis of observations made by three independent experts, the participants were classified according to their “usefulness” for the game using the Game Performance Assessment Instrument (GPAI). The ranking assessment of the effectiveness of one-on-one games and of a classified game was correlated with the results of laboratory tests. It was found that players with the highest scores in locomotion speed tests and in the explosive leg power test were also highly assessed by the experts with regard to the efficiency of their performance in one-on-one games as well as, to a slightly lesser degree, in the classified game. There was no significant relationship between the expert assessment of “usefulness” for the game and other tests. Conclusions. On the basis of strength-speed test results we may satisfactorily predict young soccer players’ efficiency of game performance.
3
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The influence of functional movement screen results on the frequency of sports injuries in soccer players

75%
Kryger K., Wieczorek A., Wieczorek J., Sliwowski R.
Central European Journal of Sport Sciences and Medicine
|
2019
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tom 27
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nr 3
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Test-retest reliability and validity of three different agility tests for various team sports in young male athletes

75%
Kutlu M., Dogan O.
Central European Journal of Sport Sciences and Medicine
|
2018
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tom 22
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nr 2
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The effects of small-sided games on fitness components and technical abilities among youth soccer players

75%
Ahmad M. F., Lee Low J. F., Nadzalan A. M.
Central European Journal of Sport Sciences and Medicine
|
2024
|
tom 45
|
nr 01
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Reliability and validity on new tests on agility and skill for children soccer players

63%
Kutlu M., Yapici H. H., Demirkan E., Yilmaz A.
Central European Journal of Sport Sciences and Medicine
|
2014
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tom 06
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nr 2
Recently developed the agility and skill tests (AS) were reevaluated to assess the children’s agility together with the soccer shoots to ball for goal. Children (male) soccer players (N = 68) (age = 11.6 ±0.5 yrs; height = 147 ±6.6 cm; weight = 35.5 ±5.6 kg) participated in this study. Test-retest and comparisons, including 20 m Sprint, Long Jump, T-Drill Test, AS (with ball), AS (goal success) and Zigzag Tests were used to assess the children’s sprinting, jump power, and agility with shooting ball. All handled test results showed that there were significant differences between the test-retest sessions (p < 0.01) except for the 20 m Sprint. There were a near perfect correlations between test and retest values (r = 0.90–0.99). A higher level of correlation between the AS tests (goal success, with ball) (r = 0.99) was found. There were very high levels of correlations between the AS (goal success and with ball) tests and Zigzag tests (r = 0.71, r = 0.70 respectively). These results suggest that the AS tests are reliable and valid agility and skill tests for children players. Because the AS tests have unique values and are composed of soccer specific agility and active shooting skills, they are very important in identifying the talent and ability of children.
7

The impact of players’ motor skills on match performance in top German Bundesliga teams

63%
Konefal M., Chmura P., Kowalczuk E., Andrzejewski M., Chmura J.
Trends in Sport Sciences
|
2015
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tom 22
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nr 4
Introduction. Soccer is a highly dynamic and acyclical game and a soccer player’s performance during a match involves a high variability of actions since. Aim of Study. The aim of the present study was to determine the effects of endurance and speed skills of players from two top German Bundesliga teams on their teams’ final standings in the league table. Material and Methods. The study covered all 34 matches of the 2013/2014 season, and it consisted of 480 observations of 41 players. It was carried out using the Impire AG motion analysis system on the basis of official Deutscher Fußball-Bund (DFB) match reports. The players’ endurance skills were estimated on the basis of total distance covered during match play and distances in different intensity ranges. The players’ speed skills were assessed on the basis of the total number of performed sprints, sprinting distance, and maximal and mean running speed. Results. The results showed that the team which was ranked lower in the final league table scored higher in all players’ motor parameters than the team which was ranked higher. Conclusions. Pre-season motor preparation of top German Bundesliga teams is not the decisive determinant of the teams’ final standings in the league, and even the highest level of players’ skills does not guarantee reaching the championship position.
8

Relationships between results of soccer-specific skill tests and game-related soccer skill assessment in young players aged 12 and 15 years

63%
Rubajczyk K., Rokita A.
Trends in Sport Sciences
|
2015
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tom 22
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nr 4
The aim of this study was to examine relationships between results of soccer-specific skill tests and game-related soccer skills in young players aged 12 and 15 years. The participants were 60 male soccer players aged 11.87-14.76 years divided into two groups: lower secondary school candidates (12y) aged 11.87 ± 0.23 years (n = 30), and upper secondary school candidates (15y) aged 14.76 ± 0.42 years (n = 30). Soccer-specific skills were assessed using two outdoor tests in competitive match conditions: Dribble Test and Turning Test. The assessment of the game-related skills was carried out by five expert judges during a 5 vs 5 small-sided game. The evaluation criteria had been set by a panel of experts. The reliability of game-related skills assessments procedures was calculated using intra class correlation (ICC), standard error of the mean (SEM), coefficient of variation (CV). Spearman’s rank correlation coefficients were used to determine the relationships between results of assessments of game-related skill and soccer-specific skill tests. Relationships between soccer-specific skills and game-related skills in 15-year-old players (–0.325 to –0.452) are less pronounced than in 12-year-old players (–0.496 to –0.667). It seems to be unjustified to use soccer-specific skill tests for prediction of young soccer players’ potential. The results of these tests can depend on numerous biological differences in the development of adolescent players. In conclusion, evaluation of players by judges should be part in talent identification models in youth soccer.
9

Functional asymmetry of the lower limbs in young soccer players

63%
Antosiak-Cyrak K., Podciechowska K., Jajor J., Rostkowska E.
Trends in Sport Sciences
|
2015
|
tom 22
|
nr 4
Introduction. The authors attempt to examine whether functional differences between the legs in soccer players are similar in different motor tests, and whether possible weaker laterality in soccer players could be the effect of the higher fitness level of their left legs, or the lower fitness level of their right legs. Aim of Study. The aim of the study was to determine the scope of differences between the results of motor coordination tests performed with the right leg and the left leg by boys playing soccer and non-training controls. Materials and Methods. 52 soccer training boys and 25 non-training controls volunteered to participate in the experiment. Motor coordination tests of the left and the right legs were performed by participants in order to assess static balance, rate of movements, dynamic endurance, and kinesthetic differentiation. Results. The greatest differences between the training and non-training boys were found in dynamic endurance (left leg, p < 0.001; right leg, p < 0.01). Coaches’ high assessments of players were based on good results of the balance test of the left leg. The differences between the left and the right legs were smaller in the soccer players than in non-training boys, particularly when the results of the left legs were better. Conclusions. In both groups under study the functional asymmetry between the right and the left legs in the static balance and dynamic endurance tests exceeded 20%, which may contribute to possible sport injuries. The soccer players’ static balance test results indicate the presence of training-induced bilateral transfer of balance ability of the legs.
10
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Effect of variable-intensity running training and circuit training on selected physiological parameters of soccer players

63%
Ambrozy T., Nowak M., Omorczyk J., Wrzesniewski K., Ozimek M., Duda H., Mucha D., Ceranowicz P., Palka T., Stanula A., Mucha D.
Central European Journal of Sport Sciences and Medicine
|
2018
|
tom 23
|
nr 3
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