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Influence of different forms of creatine supplementation on aerobic and anaerobic capacity of soccer players during preparation period

100%
Radzimiński Ł., Hajduczenia A.
Atena Journal of Sports Sciences
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2019
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vol. 1
2-2
EN
Objectives: The aim of this study was to compare the influence of creatine monohydrate and creatine malate supplementation on aerobic and anaerobic capacity in semi-professional soccer players during preparation period. Methods: 15 adult soccer players from polish second league club took part in the study. Participants were divided into two groups (Group 1: supplemented their diet with creatine monohydrate; group 2: used creatine malate). Before and after five-week preparations the aerobic (PWC 170 test) and anaerobic (Wingate test) capacity of the players were measured. Findings: Significant increase in PWC 170 indicator, maximal oxygen uptake, and total work capacity in Wingate test were noted in the group that consumed creatine monohydrate. Moreover, two-way ANOVA results showed significant effect for time in above mentioned variables. Conclusions: Creatine monohydrate supplementation may efficiently support aerobic and anaerobic capacity development in semi-professional soccer players. Five-week creatine malate supplementation provides no significant changes in aerobic and anaerobic capacity.
2
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Images to Remember: Nostalgia and Hegemonic Identities in Italia 90: The Movie

75%
Salas-Murillo B.
Review of International American Studies
|
2022
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vol. 15
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issue 2
109-127
EN
The reconstruction of the past and memory is examined in the feature film Italia 90: The Movie (2014) by Miguel Gómez, which depicts the first participation of a Costa Rican team in a World Cup. The analysis includes the narrative, visual, and sound operations with which the past and memory are recreated (... or created), as well as the ways in which the story involves the viewers, particularly those who remember the episode. It is explained that, although the story resorts to certain topics of sports cinema, it is presented more as an adventure of the community, which would eventually include an entire country, and favors the exploration of the intimate over the epic. Italia 90: The Movie appeals to nostalgia, through recognizable images and sounds, as well as figures anchored in the hegemonic Costa Rican imaginary (such as the “common peasant”), to narrate an episode that, in addition to being central in the history of sports in Costa Rica, it is among the events that symbolically mark the country's entry into the globalized world.
3
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HEART RATE AS A MEASURE OF EXERCISE INTENSITY IN SOCCER

75%
Śledziewski D., Garcia E. S., Szmuchrowski L. A.
Roczniki Naukowe Wyższej Szkoły Wychowania Fizycznego i Turystyki w Białymstoku
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2016
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issue 1(15)
50-56 s.
PL
Celem badań była ocena oraz porównanie intensywności ćwiczeń realizowanych przez piłkarzy nożnych U-20 i U-17 w trakcie gier mistrzowskich, przy wykorzystaniu wskaźnika procentu tętna maksymalnego (%HRmax). Dodatkowym celem pracy było porównanie poziomu tętna grających zawodników, jakie wystąpiło u nich w pierwszej i drugiej połowie meczu oraz w meczu towarzyskim i w meczach mistrzowskich (6 spotkań). W badaniach uczestniczyło 25 piłkarzy, o średnim stażu treningowym 5 lat. Przeciętne obciążenia treningowe dla badanych to ok. 16 godzin zajęć treningowych i dwa mecze mistrzowskie w tygodniu. Wyniki badań wykazały, że intensywność ćwiczeń (gry) była niższa w drugich połowach meczów, co sugeruje, że obserwowany spadek mocy był spowodowany przygotowaniem wydolnościowym piłkarzy. Intensywność gry była też znacząco niższa w grze towarzyskiej niż w meczu oficjalnym. Możliwe, że wpływ na obserwowany poziom tętna miała motywacja. Tym niemniej – poziom intensywności gry z gier towarzyskich nie powinien być porównywany z wynikami obserwacji intensywności gry w meczach mistrzowskich.
EN
The purpose of this study was to evaluate and to compare the exercise intensity of U-20 and U-17 players during official championship Soccer games, using as parameter of effort the %HRmax. The study had also the purpose of comparing the results between the first half time and the second half time of the game and was to compare the HRmax recorded during a friendly game and six official games. Twenty-five male Soccer players who have been playing this sport for an average of five years participated in the study. The athletes trained for about 16 hours and played 2 championship games weekly. The results showed if the exercise intensity was lower in the second half time of the game suggesting that there might have been a decrease in performance capacity of the players. The exercise intensity of was also lower during the friendly game than during the official games. It is possible that motivation also plays a role causing this difference. The exercise intensity from a friendly game should not be used as reference for official games.
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