The aim of the study was to evaluate inter-operator reliability OPTA Client System which is used collect live football match statistics by Sportsdata Company. Two groups experienced operators were required analyze a Spanish league independently. Results showed that team events coded independent reached very good agreement (kappa values 0.92 and 0.94) average difference event time 0.06±0.04 s. goalkeeper actions also at high level, kappa 0.86. intra-class correlation coefficients (ranged from...

Identifying match statistics that strongly contribute to winning in football matches is a very important step towards more predictive and prescriptive performance analysis. The current study aimed determine relationships between 24 the outcome (win, loss draw) all games close of group stage FIFA World Cup (2014, Brazil) by employing generalised linear model. cumulative logistic regression was run model taking value each statistic as independent variable predict logarithm odds winning....

Recent research suggests that match-to-match variation adds important information to performance descriptors in team sports, as it helps measure how players fine-tune their tactical behaviours and technical actions the extreme dynamical environments. The current study aims identify differences of from strong weak teams explore players' match performance. Performance data all 380 matches season 2012-2013 Spanish First Division Professional Football League were analysed. Twenty-one...

Identifying match events that are related to outcome is an important task in football analysis. Here we have used generalised mixed linear modelling determine relationships of 16 and 1 contextual variable (game location: home/away) with the outcome. Statistics 320 close matches (goal difference ≤ 2) season 2012-2013 Spanish First Division Professional Football League were analysed. Relationships evaluated magnitude-based inferences expressed as extra won or lost per 10 for increase two...

Performance of football teams varies constantly due to the dynamic nature this sport, whilst typical performance and its spread can be represented by profiles combining different performance-related variables based on data from multiple matches. The current study aims use a profiling technique evaluate compare match in UEFA Champions League incorporating three situational (i.e. strength team opponent, outcome location). Match statistics 72 teams, 496 games across four seasons (2008-09...

Field observations were performed to explore the variation of large-scale structure inclination angles in high Reynolds number atmospheric surface layer (ASL). The flow measurements [Reτ ∼ Ο (106)] acquired at Qingtu Lake observation array site. inferred from two-point correlations fluctuating streamwise velocity obtained for different friction velocities neutral regime and thermal stability conditions. Results indicate that, addition Monin− Obukhov parameter, angle varies systematically...

In order to investigate the effect of playing styles on match performance football teams, data were analysed 18 technical performance-related variables and 8 physical from 59 matches in 2018 FIFA World Cup. A k-means cluster analysis was conducted classify all observations into two clusters tactical approach identify teams (characterised as direct-play, possession-play mixed-play). Separate Poisson regression models run generalised mixed linear modelling examine differences between...

The aim of the current study was to examine match performance elite goalkeepers considering three situational variables (opposition, outcome and location). Match statistics 46 who played 744 full matches during season 2012–13 in Spanish First Division Professional Football League were analyzed. Results indicated that there only indicators (Fouls Drawn, Fouls Committed Tackles) showed no differences among high, intermediate low levels team. sole indicator Saves which differed for all team...

This study aimed to identity the technical demands of different playing positions controlling effects situational variables in UEFA Champions League from a long-term perspective. Data 18 performance-related match actions and events achieved by 1,990 out-field players (classified into five positional roles) 1,000 matches played season 2009/2010 2016/2017 were collected. Generalised mixed linear modelling was employed taking value each as dependent variable, classified 5 predictor variable....

Quantifying correlations between soccer match statistics and results is an effective way to identify key performance indicators of competitions. In the current study, generalized linear modelling was employed relationships 21 performance-related variables outcome (win, draw, loss). Data all 480 matches 2014 2015 season in Chinese Football Association Super League were collected analyzed. The cumulative logistic regression run taking value each variable as independent predict logarithm odds...

The aim of this study was to (i) identify technical and physical performances basketballers according playing position in strong weak teams, (ii) describe variability game-to-game performance game outcome, location, quality teams opposition. Performance-related variables all the 699 matches regular season 2015–2016 National Basketball Association were analysed. All comparisons performed using magnitude-based inferences. As could be expected, results showed that differed between players...

To investigate the effects of situational factors (match location, strength team and opponent) environmental (relative air humidity, temperature quality index) on technical physical match performance Chinese Soccer Super League teams (CSL). The generalized mixed modelling was employed to determine by using data all 240 matches in season 2015 collected Amisco Pro®. Increase rank difference would increase number goal-scoring related, passing organizing related actions a small-to-moderate...

The study aimed to identify the effects of situational (match location, match outcome and strength team/opponent team) environmental (ambient temperature, relative humidity, WBGT, ground weather condition) factors on physical technical activity elite football individual playing positions. Physical were collected from 779 players competing in German Bundesliga during 5 domestic seasons, 2014/2015 2018/2019, totalling 1530 matches. data players' was taken IMPIRE AG system. Based available...

The aim of this study was to explore the differences in technical, tactical and movement performance professional male tennis players Grand Slams, according player's experience relative quality. Match data 1188 competing 2015–2017 Slam tournaments were collected. Experience quality (RQ) used classify via cluster analysis, based on Cubic Clustering Criterion. Afterwards, a descriptive discriminant analysis performed identify most important variables that best predict player clusters each...

The current study aimed to identify the differences in technical performance between players from clubs of Bundesliga (Germany), La Liga (Spain), Ligue 1 (France), Premier League (England), and Serie A (Italy) when competing matches UEFA Champions League. Technical performance-related match data 1,291 1,125 (9,799 observations) (seasons 2009/10 2017/18) were collected analysed. generalised mixed linear modelling was employed taking names league as independent variable predict count number...

With the purpose of quantifying differences in running performance soccer players during matches from different continental confederations, data 1508 match observations generated 559 59 at 2018 FIFA World Cup held Russia were analyzed. Generalized mixed linear modelling was carried out to estimate effect confederations on each selected thirteen related variables (total distance covered, top speed achieved, number sprints, covered and time spent walking, jogging, low-speed running,...

(2021). An investigation identifying which key performance indicators influence the chances of promotion to elite leagues in professional European football. International Journal Performance Analysis Sport: Vol. 21, No. 4, pp. 641-650.

This study aims to identify the relationship between social anxiety (SA) and internet addiction (IA) in a group of Chinese college students by controlling for effects physical exercise (PE), demographic, academic variables. A sample 4,677 from five major regions China participated this survey. The findings revealed that: (1) SA had direct effect on IA; (2) regular active participation can relieve IA effectively; (3) level is strongly linked sex; (4) levels are different among majors; (5)...

The aim of this study was to identify the relationships between variation match variables and teams’ performance. Data from all 768 matches played at group stage UEFA Champions League season 2009/1010 2016/2017 were analysed. non-clinical magnitude-based inferences used differences technical teams. Autocorrelation function, correlation analysis generalised linear model examine Results showed that qualified teams demonstrated a more stable performance on related goal scoring, attacking...

This study aimed to assess the technical match performance of top-class football players in a long-term perspective. Technical profiles according five playing positions (central defender, full back, wide midfielder, central forward) and situational variables (competition stage, location, quality team, opponent, outcome) were established. data UEFA Champions League from season 2009–2010 2016–2017 analyzed. The true effects positional on players’ evaluated by non-clinical magnitude-based...

Background: This study aimed to conduct a detailed and comparative analysis of body composition dietary habits in elite swimming water polo athletes. Through the examination these key parameters, this seeks compare intake two distinct aquatic sports disciplines. Methods: A total 10 top-level swimmers 13 athletes participated anthropometric assessments, as well nutritional intake. To groups, an independent samples t-test was used, variance homogeneity checked using Levene’s test. The effect...

AbstractThis study aimed to compare the differences in game-to-game variability of technical and physical parameters basketball players, according game location outcome. Game data (n=712) were collated from official box-score player-tracking 2013-14 NBA regular season. The players separated their court specific position. A two-step cluster analysis was performed group time played into 3 groups: short, medium, long-time played. coefficient variation (CV) calculated parameters. results showed...

The current study aimed to investigate the evolutionary trends of players’ technical performances in UEFA Champions League. Match statistics 18 performance indicators from 1,125 matches (2,489 players, 16,247 full match observations) group and knockout stages League (season 2009/2010 2017/2018) were analysed. Separate Poisson regression models run generalised mixed linear modelling compare differences among seasons, autocorrelation function was used identify correlations within variables....

The aim of this study was to investigate the influence number ball touches authorised per game (one touch [T1], two [T2], and free [FT]) on players' physical responses throughout bouts in 4 vs soccer small-sided games (SSGs) with mini-goals (without a goalkeeper). Fourteen professional Polish players (age 23.2±2.7 years, height 177.9±6.1 cm, weight: 73.2±6.9 kg, body fat 12.6±2%, playing experience: 14±5 years) completed nine series SSGs. Each trial included three SSGs duration minutes an...