Wyniki wyszukiwania - Biblioteka Nauki

1

SMALL-SIDED SOCCER GAME (1V1) IN GOALKEEPERS’ TRAINING

100%

Goliński D. , Muracki J. , Wolański P. , Klich S. , Murawska-Ciałowicz E.

Central European Journal of Sport Sciences and Medicine

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2016

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tom 16

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nr 4

111-118

EN

Small-sided soccer games, i.e. 1v1 are often used in training, which results in a composite influence on the player. Training exercises stimulated in the game allow to master many skills, form habits and modify behaviors associated with solving specific situations during a match. The aim of the study was to assess the intensity of exercise during a 1v1 game for goalkeepers. Eight goalkeepers participated in the experiment (body weight 80.63 ±3.50 kg, body height 184.69 ±3.71 cm, BMI 23.64 ±0.74). All goalkeepers played 1v1 games. During the small-sided game players can use all the goalkeeper techniques to score a goal. During all of the matches, heart rate (HR) was recorded using a sport tester, LA was measured in the second minute after the end of each game. There was also collected data determining subjective assessment of the effort made by the players using Borg scale (RPE). The highest average HR and RPE were recorded in the third match, respectively (192.38 ±8.07 b/min; 14.38 ±2.07), while in the first match the examined parameters were on average 186 ±8.85 b/min; 11.38 ±1.51, and in the second 186.00 ±8.09 b/min; 13.50 ±1.85 respectively. The highest LA level was recorded after the second match and equaled 7.71 ±2.07 mmol/l (7.06 ±3.54 after the first match and 7.5 ±1.37 after the third match). The 1v1 game requires the use of similar to the real game actions, as well as the average exercise intensity is also similar to the scoringopportunity situations and conditions of a match.

2

The Efficiency Model of Goalkeeper's Actions in Soccer

88%

Szwarc A. , Lipińska P. , Chamera M.

Baltic Journal of Health and Physical Activity

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2010

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tom 2

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nr 2

132-138

EN

Background: The purpose of this paper was to present cognitive models illustrating efficiency of the goalkeeper's actions in soccer based on observation of play in selected matches of the Euro 2008 finals.Material/Methods: The observation method was used in the study. The play of both goalkeepers was analysed in 7 soccer matches in a cup phase of the European Championships which took place in Portugal in 2008. The data was recorded on the authors' observation forms. Activity, effectiveness and reliability during both offensive and defensive actions were subject to this examination.Results: It was revealed that most actions of the goalkeeper are aimed at taking control of the field of play or keeping possession of the ball; creating goal scoring opportunity represents only a small percentage of offensive actions. Defensive actions are generally performed individually and the highest reliability is reported while catching the ball.Conclusions: Efficiency models of goalkeepers' actions should be used to create models of play for players representing a lower level of sports competence in order to improve the effectiveness of their game play. One should continue further study to improve a research tool so as to evaluate other, important from the point of view of the game's objectives, actions definitely dependent on team mates' behavior.

3

DISTANCE COVERED BELOW AND ABOVE THE ANAEROBIC THRESHOLD BY ELITE GERMAN GOALKEEPERS

88%

Parus P. , Chmura P. , Konefał M. , Andrzejewski M. , Kowalczuk E. , Chmura J.

Central European Journal of Sport Sciences and Medicine

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2017

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tom 17

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nr 1

25-32

EN

The study aimed to assess the total covered distance during a match, performance volume below and above the anaerobic threshold, as well as characterize physical activities of professional Bundesliga goalkeepers during soccer matches. 34 goalkeepers (606 observations) from all eighteen Bundesliga teams, who played in the 2014/2015 season were considered for the study. The performance of goalkeepers was analyzed with the use of the VIS.TRACK system. The variables measured included: total covered distance [km] in the whole match, the first half, and the second half; distance covered below and above the anaerobic threshold (4 m • s–1) [km]; and distance covered in six intensity ranges [km]. The total distance covered by the goalkeepers was 5.48 ±0.56 km. The distance covered by goalkeepers below the anaerobic threshold was 5.28 ±0.52 km, whereas the distance covered above the anaerobic threshold amounted to 0.21 ±0.09 km. The ratio between the goalkeepers’ volumes of aerobic and anaerobic performance was 25:1. The total distance covered by goalkeepers in match play and the distances covered by goalkeepers below and above the anaerobic threshold (96.17% and 3.83%, respectively) indicate that during a match the goalkeepers undertake predominantly aerobic exercises.

4

Biomechanical analysis of anticipation of elite and inexperienced goalkeepers to distance shots in handball

88%

Rojas F. J. , Gutiérrez-Davila M. , Ortega M. , Campos J. , Párraga J.

Journal of Human Kinetics

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2012

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tom 34

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nr 1

41-48

EN

The objective of this study was to evaluate the anticipation time and kinematic factors in the movement of goalkeepers’ center of mass when making a long-distance throw in handball. The sample group was composed of 14 goalkeepers and field players. A force platform was used to measure the force of the goalkeepers’ reaction movements, while the throwers’ movements were recorded with high-speed cameras. The expert goalkeepers began to move 193 ± 67 ms before the ball was released, with a 67% success rate of interception. The inexperienced goalkeepers began their movement 209 ± 127 ms with a 24% success rate. The time taken by expert goalkeepers to begin a vertical movement of their CM, relative to the moment of the ball’s release, was less than the time taken by inexperienced goalkeepers (77 ± 70 vs. 141 ± 108 ms respectively). The analysis of the velocity and movement indicates that expert goalkeepers wait longer before moving than do inexperienced goalkeepers.

5

Goalkeeper, characteristics of the position, playing, technique, training

75%

Struzik A.

Central European Journal of Sport Sciences and Medicine

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2020

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tom 32

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nr 4

97-113

EN

Changes in agoalkeeper’s technique, his physical and mental preparation are ongoing, forced by the increasing power of the throw, speed of the game, improved players’ throwing capability; throws with rotation and other technical innovations involved in this element.The goalkeeper’s tasks are not only limited to defending the goal. He participates in launching aquick attack or quickly resuming play after conceding agoal.Goalkeeper training should be varied in order to mobilize the body’s full energy potential and shape the elements of the technique. The goalkeeper should be intelligent, courageous, endowed with the excellent physical condition and above all physically fit.

6

The influence of muscle soreness on the speed of performing a motor reaction speed task in football goalkeepers during a training camp

75%

Muracki J.

Central European Journal of Sport Sciences and Medicine

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2020

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tom 32

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nr 4

27-41

EN

Aim: To investigate the influence of muscle soreness on the speed of performing a motor reaction speed task in football goalkeepers. Methods: Twenty-four young healthy football goalkeepers, aged 1618 years old (average 16.7 ±0.67 year), with an average body height of 175.6 ±5.4 cm and body weight of 65 ±5 kg, participated in a study conducted during a 6-day training camp. The first day, referred to as day 0, was intended for initial tests and the following 5 days, referred to as days 15, consisted of training. On day 0, before the training period, anthropometric parameters such as weight and height were measured, subjects were questioned to determine the rate of perceived exertion (RPE) and perceived psychophysical readiness (PPR), a speed test with motor reaction choice (ST) was performed using a Smart Speed System and areas with muscle soreness (MS) were recorded by means of a computer tablet with the Navigate Pain application. The goalkeepers participated in two training sessions on each of the following 5 days. Before each training session, the same speed test was performed. Lap times for 5 m and 15 m were recorded. After the second training session each day, the participants drew digital pain maps using a computer tablet, marking separate areas of the body where they felt muscle soreness. These data were consolidated and the total area was analyzed to investigate if, throughout the training, there were any changes to the size of the area that was indicated as having MS. A categorization of body areas was also made to determine areas where muscle soreness was most frequently indicated. Each training session was monitored with heart rate (HR) registration and each goalkeeper determined his fatigue (RPE) and readiness to exercise (PPR) on a 110-point scale. Results: Twenty-three out of twenty-four (98.5%) goalkeepers indicated that they had MS during the study. Day 2 showed the highest incidence rate with 21 participants indicating that they felt MS. The biggest area of MS was also indicated on day 2, yet statistical analysis did not show significant differences in the area of MS between the training days. MS was most often indicated in the upper leg, i.e. the thighs. The average time of the first 5 m was 1.3 [s] (SD = 0.09), ranging from 1.28 [s] to 1.33 [s], while the average time of the following 10 m was 2.07 [s] (SD = 0.18), ranging from 2.04 to 2.1 [s]. The average total speed test time equaled 3.37 [s] (SD = 0.21), ranging from 3.33 to 3.38. Statistical analysis did not show significant differences in any of the results between the training days. Conclusions: Most of the goalkeepers felt muscle soreness as an effect of specific goalkeeper training, measured by indicating painful zones on digital pain drawings. In this study, where muscle soreness was induced by technical-tactical specific goalkeeper training, no significant changes were noticed in the speed of performing a motor speed test with reaction choice or on the area of muscle soreness indicated on digital pain drawings, although almost every goalkeeper had a large area of muscle soreness. Discussion: Many studies show that delayed onset muscle soreness (DOMS) causes a decrease in strength, power, range of motion and speed. However, in many cases, these studies are designed to induce high intensity DOMS and then conduct isolated motor skill tests. In this study the objective was not to induce high intensity DOMS but to investigate the effect of muscle pain, which is present naturally during training processes, and then assess its effect on a speed test which reflects real game situations – with a component of reaction choice and change of movement and direction. Approaching the subject from a different viewpoint allows us to see that the reliable assessment of the psychophysical state of players, made by observing their actions on the pitch or even using photocells to measure motion speed, is difficult without an insight into the parameters of soreness that players experience. These can be monitored, for example, through digital pain mapping software.

7

The Method of Goalkeeper's Evaluation in Futsal

75%

Szwarc A. , Oszmaniec M. , Lipinska P.

Baltic Journal of Health and Physical Activity

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2014

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tom 6

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nr 2

100-113

EN

Background: The aim of this study was to develop a research tool used to assess the efficiency a goalkeeper's actions in a game of futsal. Material/Methods: Author's own proposal of an observation sheet was created and subject to a validation procedure. To assess intra-rater reliability and inter-rater reliability, the ICC test was used. Results: There was a strong compatibility of ratings of the intra-rater reliability - 1.00 (95% Cl 1.00-1.00) and the inter-rater reliability − 0.99 (95% CI 0.99-1.00), which proves the reliability of the proposed research tool. Conclusions: The developed sheet allows the registration and evaluation of individual performance and cooperation in terms of goalkeeper's game objectives pursued both in offence and defence.

8

The method of goalkeeper's evaluation in futsal

75%

Szwarc A. , Oszmaniec M. , Lipinska P.

Baltic Journal of Health and Physical Activity. The Journal of Gdansk University of Physical Education and Sport

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2014

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tom 06

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nr 2

EN

Background: The aim of this study was to develop a research tool used to assess the efficiency a goalkeeper’s actions in a game of futsal. Material/Methods: Author’s own proposal of an observation sheet was created and subject to a validation procedure. To assess intra-rater reliability and inter-rater reliability, the ICC test was used. Results: There was a strong compatibility of ratings of the intra-rater reliability – 1.00 (95% Cl 1.00-1.00) and the inter-rater reliability – 0.99 (95% CI 0.99-1.00), which proves the reliability of the proposed research tool. Conclusions: The developed sheet allows the registration and evaluation of individual performance and cooperation in terms of goalkeeper’s game objectives pursued both in offence and defence.

9

Sprawność działania bramkarzy piłki nożnej w zespołach efektywnych sportowo

63%

Szwarc A. , Chamera M.

Rozprawy Naukowe Akademii Wychowania Fizycznego we Wrocławiu

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2013

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nr 42

36-43

EN

The aim of this study was to present a model which shows the efficiency of the goalkeepers’ actions in soccer based on observations of 12 direct elimination matches during the 2010 World Cup, the 2010 Africa Cup of Nations and the 2011 Copa America. Data was recorded on observational sheet template designed by the author. Goalkeepers’ actions, efficiency and reliability, during both offensive and defensive actions, were subject to examination. The study found that during offensive actions, for goalkeepers the most effective actions are those of taking control of the field of play and keeping possession of the ball. Whereas creating a goal scoring opportunity represents only a small percentage of their actions. Defensive actions are generally performed individually by goalkeepers and they are the most reliable while catching the ball.