Wyniki wyszukiwania - Biblioteka Nauki

1

The Efficiency Model of Goalkeeper's Actions in Soccer

100%

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.

2

The Efficiency of Players of Action-Effective Football Teams in One against One Situations

100%

Szwarc A. , Kromke K. , Lipińska P.

Baltic Journal of Health and Physical Activity

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2012

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tom 4

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nr 2

104-109

EN

Background: The aim of this study was to identify and compare the efficiency of action-effective football players in one against one situations (1×1).Material/Methods: The game of winning teams' players was observed in four matches and two semi-final meetings of the European Championships tournament in 2004 and 2008. Visual recording was monitored using a freeze-frame function and data about the players' game were recorded on observation sheet by Szwarc. The activity, effectiveness and reliability of individual offensive and defensive actions were estimated.Results: It was found that on average players of the best teams in Europe participated in 216 1×1 battles (from 184 to 273) in one game, with an average reliability of 52%.Conclusions: Furthermore, it was proved that players-champions engaged equally often and with the same effectiveness in both individual defensive measures and offensive actions.

3

The Method of Goalkeeper's Evaluation in Futsal

86%

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.

4

Sprawność działania koszykarzy zespołów efektywnych sportowo z uwzględnieniem pozycji zajmowanych w grze

72%

Szwarc A. , Lekner I. , Lipińska P.

Rozprawy Naukowe Akademii Wychowania Fizycznego we Wrocławiu

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2013

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nr 42

44-61

EN

Background. The aim of the study was to describe models of the efficiency of basketball players playing at different positions in the top sports teams based on observation in direct elimination matches of the 2010 World Championships. Material and methods. An observation method was used in the study. Data was recorded on the authors’ observation sheets. Activity, efficiency and reliability during both offensive and defensive actions were subject to this examination. The play of basketball players was analysed in 7 basketball direct elimination matches of the World Championships. Results. It was revealed that most actions of the point guard (taking into account activity and efficiency) are aimed at handling and passing the ball, creating scoring opportunities and executing 3-point throws. 3 points are also often scored by the shooting guard and the power forward. On the other hand – the center and the power forward are especially active in creating scoring opportunities and in scoring 2 points. The power forward, the small forward, the shooting guard and the point guard prevent from losing 3 points. In the actions preparing for the situation to score a point and in actions preventing situations to score a point players of different positions perform a similar activity of action. Conclusions. Detailed analysis of actions applied in the game may indicate differences in the performance among players of different positions, implying the appropriate selection of individual training.

5

Asocjacyjne poliuretanowe modyfikatory właściwości reologicznych wodnych dyspersji polimerów. Cz. 2, Wpływ wybranych czynników na działanie modyfikatorów

58%

Przybylski J.

Polimery

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2008

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tom T. 53, nr 6

440-445

PL

Artykuł stanowi kontynuację przeglądu literatury dotyczącej wymienionych w tytule modyfikatorów poliuretanowych [PUR] (por. [1]). Omówiono wpływ struktury modyfikatorów - długości segmentów hydrofobowych oraz hydrofilowych łańcucha PUR, rozkładu ciężarów cząsteczkowych segmentów hydrofilowych oraz cech użytych w syntezie PUR substratów [rodzaj diizocyjanianu, stopień podstawienia grup hydroksylowych w poli(tlenku etylenu) (PEG)] - na efektywność modyfikacji właściwości reologicznych wodnych dyspersji polimerów. Scharakteryzowano także zależność tej efektywności od czynników niezwiązanych ze strukturą modyfikatorów, mianowicie od dodatkowej obecności w układzie rozpuszczalnika organicznego oraz środka powierzchniowo czynnego a także od zawartości modyfikatora PUR.

EN

An article is a continuation of literature review concerning the titled polyurethane (PUR) modifiers. The effects of modifiers' structures {the lengths of hydrophobic and hydrophilic segments of PUR chain, molecular weight distributions of hydrophilic segments and the features of substrates used in PUR syntheses [type of diisocyanate, substitution degree of hydroxyl groups in poly(ethylene oxide) (PEG)]} on the efficiency of modification of rheological properties of aqueous polymeric dispersions (Fig. 1) were discussed. Dependence of this efficiency on the factors not related to modifiers' structures, namely additional presence of organic solvent in the system (Fig. 2), surfactant or PUR modifier content was also characterized.