نتایج جستجو برای: of soccer elite referees of iran premier league
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The transition into full-time training represents a key period in the development of young soccer players. Here we compared weekly loads (matches, field-, and resistance-training) English Premier-League Academy players from under-16 (U16), under-18 (U18) under-23 (U23) age-groups during meso-cycle. Forty (U16 n = 13, U18 15 U23 12) were monitored using global navigation satellite systems differ...
ABSTRACT Background and Objectives: The aim of the present study was to investigate the effect of six weeks of volleyball training on lipid and lipoprotein profiles of elite high school male volleyball players in the Golestan Province (Iran) during preparation season for an international championship in France. &...
this study attempts to investigate the effect of peers’ revision in comparison to that of the teacher, and whether peers’ comments and teachers’ comments facilitate students’ revision? if yes, which one is more effective? also attempts have been made to see which aspects of language are more highlighted by peers versus teachers when commenting. besides, it is investigating the student’s attitud...
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
We show that professional soccer players exhibit reference-dependent behavior during matches. Controlling for the state of the match and for unobserved heterogeneity, we show on a minute-by-minute basis that a player breaches the rules of the game, measured by the referee’s assignment of cards, with a significantly higher probability if his team is behind the expected match outcome, measured by...
IN SEARCH OF THE HOLY GRAIL What would a Premier League team pay for software that allowed it to optimise performance while reducing injuries? There are emerging data that would allow such software to be developed (and indeed, some software companies who already claim they can predict injuries before they occur), but no product is ready for prime time yet. In this editorial, we briefly direct t...
BACKGROUND During a soccer game, the cardiovascular system is severely taxed The referees must be alert and their level of fitness must be such that fatigue will not impair their decision-making. Referee's peak overall performance is usually after 40 when the performance starts to decline. We evaluated the morphological and functional cardiac profile of professional soccer referees. MATERIALS...
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