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https://www.readbyqxmd.com/read/29893608/association-between-pre-season-training-and-performance-in-elite-australian-football
#1
Callum J McCaskie, Warren B Young, Brendan B Fahrner, Marc Sim
PURPOSE: To examine the association between pre-season training variables and subsequent in-season performance in an elite Australian football team. METHODS: Data from forty-one elite male Australian footballers (mean±SD: age=23.4±3.1y; height=188.4±7.1cm; mass=86.7±7.9kg) was collected from one Australian Football League (AFL) club. Pre-season training data (external load, internal load, fitness testing and session participation) were collected across the 17-week pre-season phase (6-weeks pre-Christmas, 11-weeks post-Christmas)...
June 12, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29870554/the-betting-odds-rating-system-using-soccer-forecasts-to-forecast-soccer
#2
Fabian Wunderlich, Daniel Memmert
Betting odds are frequently found to outperform mathematical models in sports related forecasting tasks, however the factors contributing to betting odds are not fully traceable and in contrast to rating-based forecasts no straightforward measure of team-specific quality is deducible from the betting odds. The present study investigates the approach of combining the methods of mathematical models and the information included in betting odds. A soccer forecasting model based on the well-known ELO rating system and taking advantage of betting odds as a source of information is presented...
2018: PloS One
https://www.readbyqxmd.com/read/29759008/thin-slices-of-athletes-nonverbal-behavior-give-away-game-location-testing-the-territoriality-hypothesis-of-the-home-game-advantage
#3
Philip Furley, Geoffrey Schweizer, Daniel Memmert
The present research investigated whether perceivers could detect who is playing at home or away in soccer matches based on thin slices of professional (Experiment 1) and amateur (Experiment 3) athletes' nonverbal behavior prior to the match and whether perceivers rated athletes playing at home relatively higher on behavioral dimensions (Experiments 2 and 3) linked to territoriality. In Experiment 1 ( N = 80), participants watched short videos depicting soccer players prior to a UEFA Champions League match and rated whether athletes were more likely to be playing at home or away...
April 2018: Evolutionary Psychology: An International Journal of Evolutionary Approaches to Psychology and Behavior
https://www.readbyqxmd.com/read/29599863/aerobic-fitness-of-starter-and-non-starter-soccer-players-in-the-champion-s-league
#4
Giorgos Paraskevas, Marios Hadjicharalambous
To identify individual response patterns in selected aerobic fitness variables of regular starters (ST; N = 7) and non-starters (Non-ST; N = 10), top level professional soccer players were tested for maximal oxygen uptake (VO2max), velocity at 4 mM of lactate (V4), velocity at maximal oxygen uptake (νVO2max ) and oxygen pulse (O2 -pulse) in July and December following consecutive periods of fixture congestion. V4 was the only variable that increased significantly in December compared to July (15.1 ± 0.5 vs...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29518165/no-better-moment-to-score-a-goal-than-just-before-half-time-a-soccer-myth-statistically-tested
#5
Stijn Baert, Simon Amez
We test the soccer myth suggesting that a particularly good moment to score a goal is just before half time. To this end, rich data on 1,179 games played in the UEFA Champions League and UEFA Europa League are analysed. In contrast to the myth, we find that, conditional on the goal difference and other game characteristics at half time, the final goal difference at the advantage of the home team is 0.520 goals lower in case of a goal just before half time by this team. We show that this finding relates to this team's lower probability of scoring a goal during the second half...
2018: PloS One
https://www.readbyqxmd.com/read/29051865/photothermal-catalyst-engineering-hydrogenation-of-gaseous-co-2-with-high-activity-and-tailored-selectivity
#6
Jia Jia, Hong Wang, Zhuole Lu, Paul G O'Brien, Mireille Ghoussoub, Paul Duchesne, Ziqi Zheng, Peicheng Li, Qiao Qiao, Lu Wang, Alan Gu, Abdinoor A Jelle, Yuchan Dong, Qiang Wang, Kulbir Kaur Ghuman, Thomas Wood, Chenxi Qian, Yue Shao, Chenyue Qiu, Miaomiao Ye, Yimei Zhu, Zheng-Hong Lu, Peng Zhang, Amr S Helmy, Chandra Veer Singh, Nazir P Kherani, Doug D Perovic, Geoffrey A Ozin
This study has designed and implemented a library of hetero-nanostructured catalysts, denoted as Pd@Nb2 O5 , comprised of size-controlled Pd nanocrystals interfaced with Nb2 O5 nanorods. This study also demonstrates that the catalytic activity and selectivity of CO2 reduction to CO and CH4 products can be systematically tailored by varying the size of the Pd nanocrystals supported on the Nb2 O5 nanorods. Using large Pd nanocrystals, this study achieves CO and CH4 production rates as high as 0.75 and 0.11 mol h-1 gPd -1 , respectively...
October 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28890804/injuries-during-the-international-floorball-tournaments-from-2012-to-2015
#7
Kati Pasanen, Merita Bruun, Tommi Vasankari, Minna Nurminen, Walter O Frey
BACKGROUND: Floorball is a running indoor team sport that has growing popularity worldwide. Some prospective studies have investigated injuries in national floorball leagues, but such studies at the international level are lacking. OBJECTIVE: To investigate the incidence and characteristics of injuries during 12 International Floorball Federation (IFF) events. METHODS: All top-level IFF events from 2012 to 2015 were included in the study. The IFF events were divided into the following groups: Men's World Floorball Championships (2012 and 2014), Women's World Floorball Championships (2013 and 2015), Men's Champions Cup (2012, 2013, 2014 and 2015) and Women's Champions Cup (2012, 2013, 2014 and 2015)...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28866111/does-player-unavailability-affect-football-teams-match-physical-outputs-a-two-season-study-of-the-uefa-champions-league
#8
Johann Windt, Jan Ekstrand, Karim M Khan, Alan McCall, Bruno D Zumbo
OBJECTIVES: Player unavailability negatively affects team performance in elite football. However, whether player unavailability and its concomitant performance decrement is mediated by any changes in teams' match physical outputs is unknown. We examined whether the number of players injured (i.e. unavailable for match selection) was associated with any changes in teams' physical outputs. DESIGN: Prospective cohort study. METHODS: Between-team variation was calculated by correlating average team availability with average physical outputs...
May 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28828087/high-speed-running-and-sprinting-profiles-of-elite-soccer-players
#9
Javier Miñano-Espin, Luis Casáis, Carlos Lago-Peñas, Miguel Ángel Gómez-Ruano
Real Madrid was named as the best club of the 20th century by the International Federation of Football History and Statistics. The aim of this study was to compare if players from Real Madrid covered shorter distances than players from the opposing team. One hundred and forty-nine matches including league, cup and UEFA Champions League matches played by the Real Madrid were monitored during the 2001-2002 to the 2006-2007 seasons. Data from both teams (Real Madrid and the opponent) were recorded. Altogether, 2082 physical performance profiles were examined, 1052 from the Real Madrid and 1031 from the opposing team (Central Defenders (CD) = 536, External Defenders (ED) = 491, Central Midfielders (CM) = 544, External Midfielders (EM) = 233, and Forwards (F) = 278)...
September 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28756392/a-comprehensive-strength-testing-protocol-offers-no-clinical-value-in-predicting-risk-of-hamstring-injury-a-prospective-cohort-study-of-413-professional-football-players
#10
Nicol van Dyk, Roald Bahr, Angus F Burnett, Rod Whiteley, Arnhild Bakken, Andrea Mosler, Abdulaziz Farooq, Erik Witvrouw
BACKGROUND: Hamstring injuries remain prevalent across a number of professional sports. In football, the incidence has even increased by 4% per year at the Champions League level over the last decade. The role of muscle strength or strength ratios and their association with risk of hamstring injury remain restricted by small sample sizes and inconclusive results. PURPOSE: The purpose of this study is to identify risk factors for hamstring injury in professional football players in an adequately powered, prospective cohort study...
December 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28737587/influence-of-tactical-and-situational-variables-on-offensive-sequences-during-elite-football-matches
#11
Hugo Sarmento, António Figueiredo, Carlos Lago-Peñas, Zoran Milanovic, António Barbosa, Pedro Tadeu, Paul S Bradley
Sarmento, H, Figueiredo, A, Lago-Peñas, C, Milanovic, Z, Barbosa, A, Tadeu, P, and Bradley, PS. Influence of tactical and situational variables on offensive sequences during elite football matches. J Strength Cond Res 32(8): 2331-2339, 2018-This study examined the influence of tactical and situational variables on offensive sequences during elite football matches. A sample of 68 games and 1,694 offensive sequences from the Spanish La Liga, Italian Serie A, German Bundesliga, English Premier League, and Champions League were analyzed using χ and logistic regression analyses...
August 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28614162/validity-of-heart-rate-based-indices-to-measure-training-load-and-intensity-in-elite-football-players
#12
Pedro Silva, Eduardo Dos Santos, Mikhail Grishin, José Mário Rocha
Silva, P, Santos, ED, Grishin, M, and Rocha, JM. Validity of heart rate-based indices to measure training load and intensity in elite football players. J Strength Cond Res 32(8): 2340-2347, 2018-This study aimed to identify the most sensible heart rate-based indices to physical measures of training load and intensity. Twenty professional football players competing in the Russian league and in the UEFA Champions League were monitored during 15 training sessions (270 individual records) using global positioning systems devices (10 Hz) and heart rate telemetry...
August 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538325/heart-rate-variability-discriminates-competitive-levels-in-professional-soccer-players
#13
Riccardo Proietti, Selenia di Fronso, Lucas A Pereira, Laura Bortoli, Claudio Robazza, Fabio Y Nakamura, Maurizio Bertollo
Heart rate variability (HRV) has been increasingly used to monitor team sports athletes. Besides the traditional time domain indices (i.e., the SD of successive RR intervals [SDNN] and the root mean square difference of successive normal RR intervals [RMSSD]), recently the use of the stress score (SS), which is an inverse function of the SD2 index derived from the Poincaré plot, and the sympathetic/parasympathetic ratio (S/PS) to monitor soccer players has been proposed. However, the reliability of these new indices and the ability of HRV to differentiate between soccer competitive levels are unknown...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28233877/fandom-biases-retrospective-judgments-not-perception
#14
Markus Huff, Frank Papenmeier, Annika E Maurer, Tino G K Meitz, Bärbel Garsoffky, Stephan Schwan
Attitudes and motivations have been shown to affect the processing of visual input, indicating that observers may see a given situation each literally in a different way. Yet, in real-life, processing information in an unbiased manner is considered to be of high adaptive value. Attitudinal and motivational effects were found for attention, characterization, categorization, and memory. On the other hand, for dynamic real-life events, visual processing has been found to be highly synchronous among viewers. Thus, while in a seminal study fandom as a particularly strong case of attitudes did bias judgments of a sports event, it left the question open whether attitudes do bias prior processing stages...
February 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28135220/heart-rate-variability-discriminates-competitive-levels-in-professional-soccer-players
#15
Riccardo Proietti, Selenia di Fronso, A Pereira Lucas, Laura Bortoli, Claudio Robazza, Y Nakamura Fabio, Maurizio Bertollo
Heart rate variability (HRV) has been increasingly used to monitor team sports athletes. Besides the traditional time domain indices (i.e., the standard deviation of successive RR intervals [SDNN] and the root mean square difference of successive normal RR intervals [RMSSD]), recently it has been proposed the use of the stress score (SS), which is an inverse function of the standard deviation 2 index derived from the Poincaré plot, and the sympathetic/parasympathetic ratio (S/PS) to monitor soccer players...
January 20, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28113149/sports-tournament-predictions-using-direct-manipulation
#16
Romain Vuillemot, Charles Perin
An advanced interface for sports tournament predictions uses direct manipulation to allow users to make nonlinear predictions. Unlike previous interface designs, the interface helps users focus on their prediction tasks by enabling them to first choose a winner and then fill out the rest of the bracket. In real-world tests of the proposed interface (for the 2014 FIFA World Cup tournament and 2015/2016 UEFA Champions League), the authors validated the use of direct manipulation as an alternative to widgets. Using visitor interaction logs, they were able to determine the strategies people use to perform predictions and identify potential areas of improvement for further prediction interfaces...
September 2016: IEEE Computer Graphics and Applications
https://www.readbyqxmd.com/read/28053198/champions-league-of-professional-educational-opportunities-helsinki-june-2017
#17
EDITORIAL
Karim M Khan
No abstract text is available yet for this article.
January 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27938246/inconsistency-of-decision-making-the-achilles-heel-of-referees
#18
Alan M Nevill, Alex Hemingway, Rupert Greaves, Alex Dallaway, Tracey J Devonport
This study assessed whether decisions made by six qualified referees were consistent when watching the live 2016 televised Champions League Final. Referees were paired off into three separate rooms. Two referees watched the game with no supporters present. Two watched the game surrounded by Real Madrid supporters, and the remaining two watched the game surrounded by Athletic Madrid supporters. Referees were asked to decide whether each decision made by the on-field referee was either correct or incorrect. Results identified two types of refereeing inconsistency...
November 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27303357/goal-scoring-in-soccer-a-polar-coordinate-analysis-of-motor-skills-used-by-lionel-messi
#19
Marta Castañer, Daniel Barreira, Oleguer Camerino, M Teresa Anguera, Albert Canton, Raúl Hileno
Soccer research has traditionally focused on technical and tactical aspects of team play, but few studies have analyzed motor skills in individual actions, such as goal scoring. The objective of this study was to investigate how Lionel Messi, one of the world's top soccer players, uses his motor skills and laterality in individual attacking actions resulting in a goal. We analyzed 103 goals scored by Messi between over a decade in three competitions: La Liga (n = 74), Copa del Rey (n = 8), and the UEFA Champions League (n = 21)...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27281051/seasonal-pacing-match-importance-affects-activity-in-professional-soccer
#20
Daniel Link, Michael F de Lorenzo
This research explores the influence of match importance on player activity in professional soccer. Therefore, we used an observational approach and analyzed 1,211 matches of German Bundesliga and 2nd Bundesliga. The importance measurement employed is based on post season consequences of teams involved in a match. This means, if a match result could potentially influence the final rank, and this rank would lead to different consequences for a team, such as qualification for Champions League opposed to qualification for Europe League, then this match is classified as important; otherwise not...
2016: PloS One
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