1,720,962 research outputs found
Opinions of football goalkeepers on the possibilities of their conditioning training
Get PDFTitle: Opinions of soccer goalkeepers on the possibilities of their conditioning training Author: Nicolas Rotbauer Supervisor: doc. PhDr. Aleš Kaplan, Ph.D., MBA Aim: The aim of the thesis is to record the views of respondents - soccer goalkeepers of three performance categories (professional, semi-professional, amateur) on the possibilities of their conditioning training in the club both in terms of conditioning readiness in relation to the match and in terms of systematic training of the goalkeeper. Methodology: To meet the goal, I set two working procedures. At first, research of the literature available on the assigned topic was conducted. Based on it, a survey was created, which consisted of 23 questions. 36 respondents, divided into groups according to their performance level into professional, semi-professional and amateur goalkeepers, participated in the survey. Results: The bachelor's thesis shows, in a survey of a selected group of respondents (n = 36), that conditioning training is considered by the goalkeepers of professional, semi-professional and amateur competitions to be a very important factor that affects their performance. The work also demonstrated shortcomings in the conditioning training of goalkeepers, especially in its individualization. It can therefore be used as a..
The level and differences in selected movement abilities and skills in youth soccer players
Get PDFTitle: The level and differences in selected movement abilities and skills in youth soccer players. Objectives: The aim of the thesis is to compare the results of the Skills Tests before and after a short-term test and to determine the influence of exhaustion on the speed and quality of specific football skills of the elite footballers from U15 football team of SK Slavia Praha team. Methods: The research set, consisting of 15 research participants, took two measurements. The Loughborough Soccer Passing Test (LSPT) was taken like a pre-test and post-test (after short-term BUMAZA test). In the result part we applied the analytical method for the results which we obtained from the measured tests. The comparison method was used for comparison of the values of the LSPT test results before and after the stress. Finally, the basic statistical methods helped us to process the measured values. Results: The thesis results provide information about the level of physical abilities and movement skills of the players based on the obtained values of the taken tests. We found out that most players improved their straight time values in the LSPT test measured after the stress. Conversely, the penalty time was increased up to 33,32% which affected the total time. On the contrary, the value of penalization and total..
Level and degree of association of selected abilties, motor skills in football players category U6
No full textTitle: Level and degree of association of selected motor abilities, motor skills in football players category U6. Objectives: The aim of the research is to identify the level of the selected motor abilities, motor skills and motor docility and to determine the degree of association between these performance components in football players category U6. Methods: The research group (n = 52; age = 6.1 ± 0.3 years) consisted of football players of SK Slavia Praha Youth Academy. The participants completed one-time test battery which consisted of motor docility tests (IOWA- BRACE test), five tests of the motor abilities (5m and 10m linear running acceleration, 5m flying maximum speed, standing long jump, 4x10m shuttle run) and two tests of the specific football skills (4x10m shuttle run with a ball, slalom skills test). The degree of association was determined via Pearson's correlation coefficient. Results: The part with the results provides information on the level of the players' motor abilities, motor skills based on the values obtained through performed tests. The statistically significant degree of association was found between all tests across the entire test battery except for one pair (long jump from place x shuttle run with a ball). Materially significant, medium to very strong correlation r =..
Analysis of player match load: new approaches to performance assessment in football
Get PDFTitle: Analysis of player match load: New approaches to performance assessment in football. Theoretical background: Approaches to evaluating physical load in football matches have remained relatively unchanged. The commonly observed decline in player load towards the end of a match is traditionally attributed to physical fatigue, often without considering contextual factors. The parameters ball in play (BIP) and ball out of play (BOP) are frequently overlooked in analyses, despite BOP represents more than 40 % of total match time and average BIP duration ranging between 50-55 min. What effect do contextual factors have on load changes during a match? Objectives: The aim of this study was to examine the effect of the contextual factor BIP on external load changes during a football match and to quantify its representation across different phases of the match. Methods: The research sample consisted of professional football players (n = 68; age = 21.9 ± 4.8 years) competing in the 2nd and 3rd Czech football division (reserve team of an elite football club). Official league matches (n = 59) were segmented into eighteen 5- minute periods and stoppage time. External load, measured using 10 Hz GPS units, was classified as follows: total distance (TD), walking (D1), jogging (D2), running (D3), high-...Název: Analýza herního zatížení hráče v utkání: nové přístupy v hodnocení výkonu ve fotbale Teoretická východiska: Přístupy v hodnocení fyzického zatížení ve fotbalových utkáních se výrazně nevyvíjejí. Pokles zatížení ke konci utkání je tradičně připisován fyzické únavě, přičemž často chybí zohlednění kontextuálních faktorů. Parametry míč ve hře (BIP) a mimo hru (BOP) bývají v analýzách opomíjeny, přestože BOP tvoří více než 40 % celkového času utkání a průměrná doba BIP se pohybuje mezi 50-55 min. Jaký vliv mají kontextuální faktory na změny zatížení v průběhu utkání? Cíle: Cílem práce bylo ověřit vliv kontextuálního faktoru BIP na změny externího zatížení v průběhu fotbalového utkání a objektivizovat jeho zastoupení v jednotlivých fázích utkání. Sekundárním cílem bylo analyzovat vliv herních pozic a střídajících hráčů na vývoj externího zatížení. Metodika: Výzkumný soubor se skládal z profesionálních fotbalových hráčů (n = 68; věk = 21,9 ± 4,8 let), hrajících 2. a 3. českou nejvyšší fotbalovou ligu (rezervní tým elitního fotbalového klubu). Oficiální ligové utkání (n = 59) byla rozdělena na 18 5minutových úseků a nadstavený čas. Externí zatížení, měřené pomocí 10 Hz GPS jednotek, bylo klasifikováno následovně: celková vzdálenost (TD), chůze (D1), klus (D2), běh (D3), běh ve vysoké intenzitě (D4),...Laboratoř sportovní motorikyLaboratory of Sport MotoricsFaculty of Physical Education and SportFakulta tělesné výchovy a sport
Analysis of player match load: new approaches to performance assessment in football
No full textTitle: Analysis of player match load: New approaches to performance assessment in football. Theoretical background: Approaches to evaluating physical load in football matches have remained relatively unchanged. The commonly observed decline in player load towards the end of a match is traditionally attributed to physical fatigue, often without considering contextual factors. The parameters ball in play (BIP) and ball out of play (BOP) are frequently overlooked in analyses, despite BOP represents more than 40 % of total match time and average BIP duration ranging between 50-55 min. What effect do contextual factors have on load changes during a match? Objectives: The aim of this study was to examine the effect of the contextual factor BIP on external load changes during a football match and to quantify its representation across different phases of the match. Methods: The research sample consisted of professional football players (n = 68; age = 21.9 ± 4.8 years) competing in the 2nd and 3rd Czech football division (reserve team of an elite football club). Official league matches (n = 59) were segmented into eighteen 5- minute periods and stoppage time. External load, measured using 10 Hz GPS units, was classified as follows: total distance (TD), walking (D1), jogging (D2), running (D3), high-..
Objectification and differences of strength and speed in young elite soccer players.
Get PDFAuthor: Martin Procházka Title: Objectification and differences of strength and speed in young elite soccer players Objective: The main aim of this bachelor thesis is to objectify and compare selected strength and speed abilities in young elite football players of the U16 category at AC Sparta Prague club. A sub-objective of this work is to compare the results within the tested group of players and provide an overall comparison of the measured data. Methods: The research sample consisted of 21 players. Laboratory testing included the diagnosis of body composition, measurement of thigh muscle strength, and testing explosive strength of the lower limbs. Field testing comprised a 5 m, 10 m, and 30 m sprint acceleration test, a 5-0-5 agility test, and a maximal 20 m linear sprint test. Results: The analysis of players showed significant disparities in the strenght of the anterior and posterior thigh muscles. Goalkeepers excelled in tests of explosive strenght in the lower limbs. In measurements of acceleration speed, forwards achieved the best times, while defenders exhibited slower results. Overall, there is a notable variability in the movement abilities of players depending on their positions on the field. Conclusion: The aim of our bachelor thesis was to objectify and compare the strength and speed...Autor: Martin Procházka Název: Objektivizace a rozdíly úrovně vybraných silových a rychlostních schopností u mladých elitních fotbalových hráčů Cíl: Hlavním cílem této bakalářské práce je objektivizovat a porovnat vybrané silové a rychlostní schopnosti u mladých elitních fotbalových hráčů kategorie U16 v klubu AC Sparta Praha. Dílčím cílem této práce je porovnání výsledků v rámci testované skupiny hráčů a celkové porovnání naměřených dat. Metody: Výzkumný soubor byl složen z 21 hráčů. Laboratorní testování obsahovalo diagnostiku tělesného složení, měření svalové síly stehenních svalů a testování explozivní síly dolních končetin. Terénní testování obsahovalo test běžecké akcelerační rychlosti na 5 m, 10 m a 30 m, agility 5-0-5 test a test maximální běžecké lineární rychlosti na 20 m letmo. Výsledky: V analýze hráčů byly zaznamenány výrazné rozdíly v síle předních a zadních stehenních svalů. V testech explozivní síly dolních končetin excelovali brankáři. Při měření akcelerační rychlosti útočníci dosahovali nejlepších časů, zatímco obránci vykazují pomalejší výsledky. Celkově lze konstatovat výraznou variabilitu v pohybových schopnostech hráčů v závislosti na jejich pozicích na hřišti. Závěr: Cílem naší bakalářské práce bylo objektivizovat a porovnat silové a rychlostní schopnosti mladých elitních...Laboratory of Sport MotoricsLaboratoř sportovní motorikyFaculty of Physical Education and SportFakulta tělesné výchovy a sport
Reliability of the GPS system in measuring key parameters of external load in youth soccer players.
Get PDFTitle: Reliability of the GPS system in measuring key parameters of external load in youth soccer players Objectives: The main objective of this study was to investigate reliability of a GPS system in measuring key parameters of external load in youth soccer players Methods: The research group consisted of 15 youth football players aged 15 - 18. They were U16 and U19 players from elite youth teams playing the highest competitions in their category. Players undergone field trials under the supervision of qualified professionals, which were running under the standard conditions described within the methology section of the theses. To determine the reliability of the GPS system, we used the Catapult Playertek system, where the player wore 3 trackers and performer various speed test field, on the football pitch on artificial grass of the third generation. Results: The results of the work provide information that, in terms of statistical significance, eighteen of the nineteen parameters are significant. In terms of substantive significance, 3 parameters have poor reliability - maximal acceleration and distances in acceleration zones 1 - 2 m·s−2 and 2 - 3 m·s−2 . 7 parameters have moderate reliability - distances in deceleration zones 1 - 2 m·s−2 , 2 - 3 m·s−2 , 3 - 4 m·s−2 and > 4 m·s−2 , distances in...Název: Reliabilita GPS systému při měření klíčových parametrů externího zatížení u mládežnických hráčů fotbalu Cíle: Hlavním cílem práce bylo zjistit, reliabilitu GPS systému při měření klíčových parametrů externího zatížení u mládežnických hráčů fotbalu Metody: Výzkumný soubor tvořilo 15 hráčů mládežnického fotbalu ve věku 15 - 18 let. Jednalo se o hráče kategorie U16 a U19 z elitního mládežnického týmu hrající nejvyšší soutěže ve své kategorii. Hráči absolvovali terénní testování pod dohledem kvalifikovaných odborníků, které proběhlo podle standardizovaných podmínek popsaných v metodické části práce. Pro zjištění reliability GPS systému, jsme použili systém Catapult Playertek, kdy hráč měl na sobě 3 čipy a prováděl různé rychlostní testy na fotbalovém hřišti, na umělé trávě třetí generace. Výsledky: Výsledky práce podávají informace o tom, že z hlediska statistické významnosti je významných osmnáct z devatenácti parametrů. Z hlediska věcné významnosti mají reliabilitu špatnou 3 parametry - maximální akcelerace a vzdálenosti v akceleračních zónách 1 - 2 m·s−2 a 2 - 3 m·s−2 . 7 parametrů má reliabilitu střední - vzdálenosti v deceleračních zónách 1 - 2 m·s−2 , 2 - 3 m·s−2 , 3 - 4 m·s−2 a > 4 m·s−2 , vzdálenosti v akceleračních zónách 3 - 4 m·s−2 a > 4 m·s−2 a maximální decelerace. 3 parametry mají...Laboratoř sportovní motorikyFaculty of Physical Education and SportFakulta tělesné výchovy a sport
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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