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    Wyświetlanie 1-4 z 4
    Tytuł:
    Influence of different types of surfaces on the results of running speed tests in young soccer players
    Autorzy:
    Jastrzębski, Zbigniew
    Bichowska, Marta
    Rompa, Paweł
    Radzimiński, Łukasz
    Dargiewicz, Robert
    Powiązania:
    https://bibliotekanauki.pl/articles/1055148.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    Sprint tests
    exercise test
    football
    physical performance
    sport physiology
    Opis:
    The main purpose of this study was to determine the influence of different types of surfaces on the sprint test results. 33 male football players from two age categories - U15 and U18 - performed sprint tests (7 distances between 5 and 30m) and a 150m shuttle run test on three types of surfaces: natural grass [n], a synthetic surface [s] and a rubber surface [r]. The longer distance a player covers, the more likely it is that the importance of the type of running surface will be noticed. The rubber surface diminishes the negative effects of changeable factors on the reliability of the tests and therefore, in our opinion, is recommended for control tests and especially for longitudinal tests. Comparing the results of running speed tests performed on different surfaces and especially in different weather conditions is unjustified.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2014, 5, 1; 5-14
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time motion differences between Romanian and Polish high level young soccer players during 6 vs. 6 small sided games as an effect of training program
    Autorzy:
    Jastrzębski, Zbigniew
    Radzimiński, Łukasz
    Stefaniak, Arkadiusz
    Dragos, Paul
    Dumitrescu, Gheorghe
    Stępień, Piotr
    Mrozik, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1054944.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    heart rate response
    small-sided games
    time-motion analysis
    Opis:
    The purpose of this study was to present a time motion differences between Romanian and Polish young soccer players during 6 vs 6 small sided games. Young male football players from Schools of Sports Masters in Oradea (Romania) and Łódź (Poland) participated in the study. During the training session the players participated in four small-sided games 6 vs. 6 with goalkeepers (4 × 4 min, 3 min of active recovery). Heart rate responses and distance covered during small-sided games were compared. There were significant differences in the distance covered by both nationality players and age groups in reference to each intensity zone. Polish players coverd significantly longer distance compared with romanian soccer players. The results of motion abilities of young players from two countries with different training systems show that training programs can have a significant effect on adoptive abilities of the players.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2015, 10, 2; 55-61
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in blood morphology and chosen biochemical parameters in ultra-marathon runners during a 100-km run in relation to the age and speed of runners
    Autorzy:
    Jastrzębski, Zbigniew
    Żychowska, Małgorzata
    Jastrzębska, Maria
    Prusik, Krzysztof
    Prusik, Katarzyna
    Kortas, Jakub
    Ratkowski, Wojciech
    Konieczna, Anna
    Radzimiński, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2168346.pdf
    Data publikacji:
    2016-07-22
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    liver damage
    muscle fatigue
    long distance running
    age and speed differences
    total antioxidant status
    ultra-marathon
    Opis:
    Objectives The objective of the study was to reveal morphology, electrolyte and chosen biochemical parameters in terms of health risk in runners in reference to their age and running speed in the case of running a distance of 100 km, which occur after 12 h or 24 h of recovery. Material and Methods Fourteen experienced, male, amateur, ultra-marathon runners, divided into two age and two speed groups took part in the 100-km run. Blood samples for analyses indexes were collected from the ulnar vein just before the run, after 25 km, 50 km, 75 km and 100 km, as well as 12 h and 24 h after termination of the run. Results The sustained ultramarathon run along with the distance covered (p < 0.05) caused an increase in myoglobin (max 90-fold), bilirubin (max 2.8-fold) and total antioxidant status (max 1.15-fold), which also continued during the recovery. Significant changes in the number of white blood cells were observed with each sequential course and could be associated with muscle damage. The electrolyte showed changes towards slight hyperkalemia, but no changes in natrium and calcium concentrations. There were no significant differences between the age and speed groups for all the parameters after completing the 100-km run as well as after 12 h and 24 h of recovery. Conclusions Considering changes in blood morphology and chosen biochemical parameters in ultra-marathon runners during a 100-km run it can be stated that such an exhausting effort may be dangerous for human health due to metabolic changes and large damage to the organs. Negative metabolic changes are independent of age of an ultramarathon runner and occur both in younger (32±5.33 years) and older participants (50.56±9.7 years). It can be concluded that organ damage and negative metabolic changes during a 100-km run occur similarly in participants less experienced as well as in well trained runners. Int J Occup Med Environ Health 2016;29(5):801–814
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2016, 29, 5; 801-814
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of different forms of creatine supplementation on aerobic and anaerobic capacity of soccer players during preparation period
    Wpływ suplementacji różnymi formami kreatyny na poziom wydolności tlenowej i beztlenowej piłkarzy nożnych podczas okresu przygotowawczego
    Autorzy:
    Radzimiński, Łukasz
    Hajduczenia, Amelia
    Powiązania:
    https://bibliotekanauki.pl/articles/1491464.pdf
    Data publikacji:
    2019-10-09
    Wydawca:
    Atena Research Association
    Tematy:
    Creatine supplementation
    Soccer
    Aerobic and anaerobic capacity
    Opis:
    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.
    Źródło:
    Atena Journal of Sports Sciences; 2019, 1; 2-2
    2695-4486
    Pojawia się w:
    Atena Journal of Sports Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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