Hongyou Liu

Hongyou Liu
South China Normal University · School of Physical Education & Sports Science

Ph.D.

About

37
Publications
35,895
Reads
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1,263
Citations
Citations since 2017
26 Research Items
1185 Citations
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250
Introduction
Evaluation on Match Performances of Professional Football Players and Teams under Different Situational Conditions
Additional affiliations
October 2015 - October 2020
South China Normal University
Position
  • Professor (Associate)
December 2014 - February 2015
Universidade de Trás-os-Montes e Alto Douro
Position
  • Exchange Ph.D. Student
March 2014 - June 2014
Gdansk University of Physical Education and Sport
Position
  • Exchange Ph.D. Student

Publications

Publications (37)
Article
The study aims to quantify the variation in the physical and technical match performance of football teams in different months of a season in the Chinese Super League (CSL). Data of 1,899 matches in the seasons 2012–2019 of CSL collected by Amisco Pro® were analysed. The generalised mixed modelling was employed to estimate the per match mean values...
Article
Full-text available
This study aimed to assess the capacity for repeated maximal effort (RME) of soccer players in the thermo-natural conditions (NC) and in simulated conditions for the 2022 FIFA World Cup in Qatar (QSC). Twenty-four semi-professional soccer players participated in the study. The exercise test consisted of ten 6-second maximal efforts on a cycloergome...
Article
Full-text available
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 the effects of physical exercise (PE), demographic, and academic variables. A sample of 4,677 students from five major regions of China participated in this survey. The findings revealed that...
Article
Technical performances of teams competing in the professional second divisions of England, Germany and France were analysed over five seasons in order to determine which factors influence the chances of promotion to the elite leagues. A total of 11,032 team-match observations were analysed via a series of logistical regressions. The results reveale...
Article
Full-text available
The study aimed to identify the effects of situational (match location, match outcome and strength of team/opponent team) and environmental (ambient temperature, relative humidity, WBGT, ground and weather condition) factors on the physical and technical activity of elite football on individual playing positions. Physical and technical activity wer...
Article
Full-text available
The aim of the present study was to explore the differences in technical performances of players considering playing positions by controlling the effect of situational variables in each FIBA female continental basketball competition. Samples of 9,208 observations from 471 games in the America, Africa, Asia, and Europe Championships during 2013–2017...
Article
Full-text available
The aim of this study was to identify regional differences based on playing position in terms of the technical performances among FIBA Female Continental Basketball Championships by controlling the influence of situational variables including the game outcome, game type, teams and opponent quality. The samples comprised of 9208 performance records...
Article
Full-text available
was analysed. The coefficient of variation of each variable of each player in each season was calculated to evaluate the match-to-match variation of technical performance. The variation of technical performance between players was compared across five playing positions and five situational variables using the non-clinical magnitude-based inference....
Article
Full-text available
The current study aimed to investigate the evolutionary trends of players’ technical performances in the UEFA Champions League. Match statistics of 18 technical performance indicators from 1,125 matches (2,489 players, 16,247 full match observations) from the group and knockout stages of the UEFA Champions League (season 2009/2010 to 2017/2018) wer...
Article
Full-text available
This study aimed to assess the technical match performance of top-class football players in a long-term perspective. Technical performance profiles of players according to five playing positions (central defender, full back, wide midfielder, central midfielder, forward) and five situational variables (competition stage, match location, quality of t...
Article
Full-text available
The study analysed the set-to-set variation in performance using match statistics of 146 completed main-draw matches in Australian Open and US Open 2016-2017 men's singles. Comparisons of technical-tactical and physical performance variables were done between different sets; and the within-match coefficients of variation (CV) of these variables wer...
Article
Full-text available
were collected and analysed. The generalised mixed linear modelling was employed taking the names of the league as the independent variable to predict the count number of 20 technical performance-related match actions and events performed by players belonging to different leagues. The non-clinical magnitude-based inference was used to evaluate the...
Article
Full-text available
To investigate the effects of situational factors (match location, strength of team and opponent) and environmental factors (relative air humidity, temperature and air quality index) on the technical and physical match performance of Chinese Soccer Super League teams (CSL). The generalized mixed modelling was employed to determine the effects by us...
Article
The aim of this study was to identify the relationships between the variation of match variables and teams' match performance. Data from all 768 matches played at the group stage of the UEFA Champions League from season 2009/1010 to 2016/2017 were analysed. The non-clinical magnitude-based inferences were used to identify the differences of technic...
Article
In order to better understand the intensity of match activities of full-match and substitution football players, running performance of 527 players who generated 1167 match observations in the 2018 FIFA World Cup were analysed. Differences in activity profiles between groups (1st and 2nd half full-match, early and late substitutes) were quantified...
Article
In order to investigate the effect of playing styles on the match performance of football teams, data were analysed on 18 technical performance-related variables and 8 physical performance-related variables from 59 matches in the 2018 FIFA World Cup. A k-means cluster analysis was conducted to classify all match observations into two clusters of ta...
Article
Full-text available
With the purpose of quantifying the differences in the running performance of soccer players during matches from different continental confederations, data of 1508 match observations generated from 559 players in 59 matches at the 2018 FIFA World Cup held in Russia were analyzed. Generalized mixed linear modeling was carried out to estimate the eff...
Article
Full-text available
Tennis is an individual sport that requires a specialized training and match preparation for every player. Former studies in tennis have tried many approaches to analyze player’s performance using descriptive statistics (such as: match time, rally duration, or game number) and match-related statistics (such as: first and second serve percentage, ac...
Article
This study aimed to identity the technical demands of different playing positions controlling the effects of situational variables in the UEFA Champions League from a long-term perspective. Data of 18 technical performance-related match actions and events achieved by 1,990 out-field players (classified into five positional roles) in 1,000 matches p...
Article
Full-text available
Background: The aim of this study is to examine and compare the distance covered with high-intensity running and to determine differences in maximum velocities achieved in a match by 15–19-year-old elite Polish soccer players depending on their age and playing positions. Material and methods: The current study monitored and analyzed 528 matches of...
Article
The aim of this study was to explore the differences in technical, tactical and movement performance of professional male tennis players in Grand Slams, according to player's experience and relative quality. Match data of 1188 players competing in 2015–2017 Grand Slam tournaments were collected. Experience and relative quality (RQ) were used to cla...
Article
Full-text available
The aim of this study was to investigate the influence of the number of ball touches authorised per game (one touch [T1], two touches [T2], and free touches [FT]) on the players’ physical responses throughout the bouts in 4 vs 4 soccer small-sided games (SSGs) with mini-goals (without a goalkeeper). Fourteen profesional Polish players (age 23.2±2.7...
Article
Full-text available
The aim of this study was to (i) identify technical and physical performances of basketballers according to playing position in strong and weak teams, and (ii) describe variability in game-to-game performance according to game outcome, location, quality of teams and opposition. Performance-related variables of all the 699 matches of regular season...
Article
Quantifying correlations between soccer match statistics and match results is an effective way to identify key performance indicators of soccer competitions. In the current study, generalized linear modelling was employed to identify relationships between 21 performance-related variables and the match outcome (win, draw, loss). Data of all the 480...
Article
Full-text available
The purpose of this study was to evaluate the degree of interobserver reliability for the sport analysis company VIDEOBSERVER™. The football match corresponding to the 2014 World Cup final was used as the sample for the study. Data were collected on 28 players, including the actions of the goalkeepers and the players substituted during the match. T...
Article
This study aimed to compare the differences in game-to-game variability of technical and physical parameters of basketball players, according to game location and game outcome. Game data (n=712) were collated from the official box-score and player-tracking of the 2013-14 NBA regular season. The players were separated according to their court specif...
Article
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 to the extreme dynamical environments. The current study aims to identify the differences in technical performance of players from stro...
Article
Full-text available
The aim of the current study was to examine match performance of elite goalkeepers considering three situational variables (opposition, outcome and location). Match performance statistics of 46 goalkeepers who played 744 full matches during season 2012-13 in the Spanish First Division Professional Football League were analyzed. Results indicated th...
Article
Full-text available
Identifying match events that are related to match outcome is an important task in football match analysis. Here we have used generalised mixed linear modelling to determine relationships of 16 football match events and 1 contextual variable (game location: home/away) with the match outcome. Statistics of 320 close matches (goal difference ≤ 2) of...
Article
Performance of football teams varies constantly due to the dynamic nature of this sport, whilst the 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 to use a profiling technique to evaluate and compare match performance of...
Article
Full-text available
Identifying match statistics that strongly contribute to winning in football matches is a very important step towards a more predictive and prescriptive performance analysis. The current study aimed to determine relationships between 24 match statistics and the match outcome (win, loss and draw) in all games and close games of the group stage of FI...
Conference Paper
Full-text available
Identifying correlations between match performance indicators and match result is a challenging but important task in football match performance analysis (Sarmento, Marcelino, Anguera, Campaniço, Matos, & Leitão, 2014). Employing the generalised mixed linear model, the current study aimed to determine relationships between 24 match performance indi...
Article
The aim of the study was to evaluate the inter-operator reliability of OPTA Client System which is used to collect live football match statistics by OPTA Sportsdata Company. Two groups of experienced operators were required to analyze a Spanish league match independently. Results showed that team events coded by independent operators reached a very...
Article
Full-text available
The aim of the study was to evaluate the match work-rate of Chinese field hockey players by analyzing the distance covered at different intensities pooled by specific positions during different periods of matches. Thirty-eight players from twenty-four male field hockey matches at the 11th Chinese National Games were filmed and analyzed. Results sho...

Questions

Questions (2)
Question
A youth football coach referred to me that a player needs to make 3000-6000 decisions during a 90-min football match, while an adult only needs to make 1000-3000 decisions per day at work. I am not sure about these numbers. Could anyone provide any references?
Question
Does anyone who is familiar with this program know how to rotate the axes? Could you please explain me in details?
P.S. I have been trying according to the "help" for days, but it just didn't work...
Thanks in advance.

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Projects

Projects (4)
Project
Physical Education and Youth Sport
Project
Technical and physical match performance of players and teams in the CSL will be quantified by the statistics provided by OPTA Sportsdata, AMISCO PRO, etc. Effects of situational and environmental factors on the performance will be determined by the generalised mixed linear modelling.