This page has only limited features, please log in for full access.
This study aims to analyse the effects of floater positioning within futsal Gk + 3vs3 + Gk and Gk + 2vs2 + Gk small-sided and conditioned games (SSCG) on youth offensive performance on an action per minute per player basis. Three experimental conditions were carried out through the manipulation of floater positioning: floaters off (FO), final line floaters (FLF) and lateral floaters (LF). Thirty male futsal players (U19 age category) participated in the study and played once within each situation in a random order on different days. Offensive performance based on “action per minute per player” was analysed through indirect and external systematic observation. Results showed significant differences between both SSCGs (2vs2 and 3vs3). Specifically, according to the game principles analysed, 3vs3 is associated with higher values of passing and dribbling action to progress towards the goal without beating a defensive line (moderate to large effect size), while 2vs2 is associated with higher values of passing and dribbling actions that beating a defensive line (moderate to very large effect size). In addition, 2vs2 is associated with dribbling and shooting actions to shoot at goal with the lowest level of opposition (moderate effect size). Indeed, whilst the 2vs2 game format seems to promote more 1vs1 situations, the 3vs3 game format encourages more ball possession and collective tactical behaviours. Thus, training tasks intended to improve dribbling and shooting actions should use a smaller number of players whereas tasks intended to improve passing actions for ball possession should include a higher number of players with or without floaters. It seems that the number of players can influence the tactical behaviour of the team. These findings should be considered for the design of futsal training tasks, according to the main objective of the training session. For example, if the coach aims to promote the number of dribbles and shots within a SSCG, 2vs2 SSCG situations should be prioritised.
David Pizarro; Alba Práxedes; Bruno Travassos; Bruno Gonçalves; Alberto Moreno. How the Number of Players and Floaters’ Positioning Changes the Offensive Performance during Futsal Small-Sided and Conditioned Games. International Journal of Environmental Research and Public Health 2021, 18, 7557 .
AMA StyleDavid Pizarro, Alba Práxedes, Bruno Travassos, Bruno Gonçalves, Alberto Moreno. How the Number of Players and Floaters’ Positioning Changes the Offensive Performance during Futsal Small-Sided and Conditioned Games. International Journal of Environmental Research and Public Health. 2021; 18 (14):7557.
Chicago/Turabian StyleDavid Pizarro; Alba Práxedes; Bruno Travassos; Bruno Gonçalves; Alberto Moreno. 2021. "How the Number of Players and Floaters’ Positioning Changes the Offensive Performance during Futsal Small-Sided and Conditioned Games." International Journal of Environmental Research and Public Health 18, no. 14: 7557.
Relative age is a phenomenon broadly studied in sport sciences. Youth sports participants born earlier in the selection year tend to present a maturational advantage over their peers. As it is also dependent on physical performance, older physical education students may also benefit from this effect in this school subject. The main goal of this manuscript was to determine whether the relative age effect is present within physical fitness outcomes of Portuguese children and adolescents. The physical–aerobic fitness, strength, flexibility and body composition of 885 students (490 females and 395 males) were collected and compared by quarters of birth, segmented by gender and age groups (10–12; 12–14; 14–16 and 16–18 years). The results reveal a moderate to small effect in physical fitness outcomes, with a trend for children and adolescents born in the early part of the year to present higher performance levels. These differences were more evident in ages closer to the physical maturational onset (12–14 y) and more apparent in male students. This physical fitness advantage may lead to a biased assessment and development of students born earlier in the year.
Hugo Folgado; Jorge Bravo; Ana Quintas; Armando Raimundo; Bruno Gonçalves. Relative Age Effect in Physical Fitness of South Portugal Students between 10 and 18 Years Old. International Journal of Environmental Research and Public Health 2021, 18, 6092 .
AMA StyleHugo Folgado, Jorge Bravo, Ana Quintas, Armando Raimundo, Bruno Gonçalves. Relative Age Effect in Physical Fitness of South Portugal Students between 10 and 18 Years Old. International Journal of Environmental Research and Public Health. 2021; 18 (11):6092.
Chicago/Turabian StyleHugo Folgado; Jorge Bravo; Ana Quintas; Armando Raimundo; Bruno Gonçalves. 2021. "Relative Age Effect in Physical Fitness of South Portugal Students between 10 and 18 Years Old." International Journal of Environmental Research and Public Health 18, no. 11: 6092.
This case study explored how spatiotemporal data can develop key metrics to evaluate and understand elite soccer referees’ performance during one elite soccer match. The dynamic position of players from both teams, the ball and three elite referees allowed to capture the following performance metrics: (i) assistant referees: alignment with the second last defender; (ii) referee: referee diagonal movement—a position density was computed and a principal component analysis was carried to identify the directions of greatest variability; and (iii) referee: assessing the distance from the referee to the ball. All computations were processed when the ball was in-play and separated by 1st and 2nd halves. The first metric showed an alignment lower than 1 m between the assistant referee and the second last defender. The second metric showed that in the 1st half, the referee position ellipsis area was 548 m2, which increased during the 2nd half (671 m2). The third metric showed an increase in the distance from the referee to the ball and >80% of the distance between 5–30 m during the 2nd half. The findings may be used as a starting point to elaborate normative behavior models from the referee’s movement performance in soccer.
Bruno Gonçalves; Diogo Coutinho; Bruno Travassos; João Brito; Pedro Figueiredo. Match Analysis of Soccer Refereeing Using Spatiotemporal Data: A Case Study. Sensors 2021, 21, 2541 .
AMA StyleBruno Gonçalves, Diogo Coutinho, Bruno Travassos, João Brito, Pedro Figueiredo. Match Analysis of Soccer Refereeing Using Spatiotemporal Data: A Case Study. Sensors. 2021; 21 (7):2541.
Chicago/Turabian StyleBruno Gonçalves; Diogo Coutinho; Bruno Travassos; João Brito; Pedro Figueiredo. 2021. "Match Analysis of Soccer Refereeing Using Spatiotemporal Data: A Case Study." Sensors 21, no. 7: 2541.
This study aimed to examine the effects of age group (under-11, under-15, and under-23) on the external, internal workloads, and tactical individual actions when playing 4v2, 4v4, and 4v6 ball possession small-sided soccer games. Data were analysed separately under the opponent perspective (4vX) and by the cooperation perspective, according to teammates (4v2+X). For all opponent formats, statistical differences were found for walking, with older age groups covering longer distances. Higher running distances were found in 4v4 game format for U11s, while U23s reported higher RPE scores in 4v4 and 4v6 formats. More passes were performed in 4v2 and 4v4 game formats for U11s and a higher maximum passing speed in 4v6 format for U15s and U23s. In the cooperation perspective, statistical differences were found for all external workload variables: U11s covered more distances while sprinting, whereas U23s walked more, perceiving the task as more intense. Similarly, U11s performed a higher amount of tactical individual actions also in every format. Younger players seem to benefit from a lower level of opposition to mature tactical individual actions, while older players can develop fast ball circulation in numerical inferiority.
Nuno André Nunes; Bruno Gonçalves; André Roca; Bruno Travassos. Effects of numerical unbalance constraints on workload and tactical individual actions during ball possession small-sided soccer games across different age groups. International Journal of Performance Analysis in Sport 2021, 21, 396 -408.
AMA StyleNuno André Nunes, Bruno Gonçalves, André Roca, Bruno Travassos. Effects of numerical unbalance constraints on workload and tactical individual actions during ball possession small-sided soccer games across different age groups. International Journal of Performance Analysis in Sport. 2021; 21 (3):396-408.
Chicago/Turabian StyleNuno André Nunes; Bruno Gonçalves; André Roca; Bruno Travassos. 2021. "Effects of numerical unbalance constraints on workload and tactical individual actions during ball possession small-sided soccer games across different age groups." International Journal of Performance Analysis in Sport 21, no. 3: 396-408.
The aim of this study was to examine the effect of bio-banding on indicators of talent identification in academy soccer players. Seventy-two 11 to 14-year-old soccer players were bio-banded using percentage of estimated adult stature attainment (week 1), maturity-offset (week 2) or a mixed-maturity method (week 3). Players contested five maturity (mis)matched small-sided games with physical and psychological determinants measured. Data were analysed using a series of Bayesian hierarchical models, fitted with different response distributions and different random and fixed effect structures. Few between-maturity differences existed for physical measures. Pre-peak height velocity (PHV) and post-PHV players differed in PlayerLoadTM (anterior-posterior and medial-lateral) having effect sizes above our criterion value. Estimated adult stature attainment explained more of the variance in eight of the physical variables and showed the greatest individual differences between maturity groups across all psychological variables. Pre-PHV and post-PHV players differed in positive attitude, confidence, competitiveness, total psychological score (effect sizes = 0.43-0.69), and session rating of perceived exertion. The maturity-offset method outperformed the estimated adult stature attainment method in all psychological variables. Maturity-matched bio-banding had limited effect on physical variables across all players while enhancing a number of psychological variables considered key for talent identification in pre-PHV players.
Christopher Towlson; Calum MacMaster; Bruno Gonçalves; Jaime Sampaio; John Toner; Niall MacFarlane; Steve Barrett; Ally Hamilton; Rory Jack; Frances Hunter; Tony Myers; Grant Abt. The effect of bio-banding on physical and psychological indicators of talent identification in academy soccer players. Science and Medicine in Football 2021, 1 -13.
AMA StyleChristopher Towlson, Calum MacMaster, Bruno Gonçalves, Jaime Sampaio, John Toner, Niall MacFarlane, Steve Barrett, Ally Hamilton, Rory Jack, Frances Hunter, Tony Myers, Grant Abt. The effect of bio-banding on physical and psychological indicators of talent identification in academy soccer players. Science and Medicine in Football. 2021; ():1-13.
Chicago/Turabian StyleChristopher Towlson; Calum MacMaster; Bruno Gonçalves; Jaime Sampaio; John Toner; Niall MacFarlane; Steve Barrett; Ally Hamilton; Rory Jack; Frances Hunter; Tony Myers; Grant Abt. 2021. "The effect of bio-banding on physical and psychological indicators of talent identification in academy soccer players." Science and Medicine in Football , no. : 1-13.
The aim of this study was to analyse the effects of floater positioning within futsal Gk+3vs3+Gk SSGs on youth players’ tactical and physical performance. An independent measure approach under four experimental conditions was carried out: Floaters Off (FO), Goal Line Floaters (GLF), Lateral Floaters own court sidelines (LFocsl) and Lateral Floaters full court sidelines (LFfcsl). Thirty male futsal players (U19 age category) participated in the study. Players’ activity was assessed using WIMU PROTM and heart rate (HR) was recorded by HR monitors during the SSGs. Results showed significant differences in the physical variables (ρ ≤ 0.05), not finding such differences in the tactical variables analysed. However, significant differences were observed in relation to the spatial occupation areas. GLF is related to higher distance and speed variables, being the most demanding SSG; in LFocsl, lower HR values were obtained, and FO is linked to the acceleration and deceleration variables, being an indicator of futsal performance. These findings should be considered for the design of futsal training tasks, according to the context (team, players …) and time of the week and the season, since they allow the development of the variables described by optimising training time with the ball.
David Pizarro; Alba Práxedes; Bruno Travassos; Bruno Gonçalves; Alberto Moreno Domínguez. Floaters as coach’s joker? Effects of the floaters positioning in 3vs3 small-sided games in futsal. International Journal of Performance Analysis in Sport 2021, 21, 197 -214.
AMA StyleDavid Pizarro, Alba Práxedes, Bruno Travassos, Bruno Gonçalves, Alberto Moreno Domínguez. Floaters as coach’s joker? Effects of the floaters positioning in 3vs3 small-sided games in futsal. International Journal of Performance Analysis in Sport. 2021; 21 (2):197-214.
Chicago/Turabian StyleDavid Pizarro; Alba Práxedes; Bruno Travassos; Bruno Gonçalves; Alberto Moreno Domínguez. 2021. "Floaters as coach’s joker? Effects of the floaters positioning in 3vs3 small-sided games in futsal." International Journal of Performance Analysis in Sport 21, no. 2: 197-214.
Warming up prior to competition is a widely accepted strategy to increase players’ readiness and achieve high performances. However, pre-match routines are commonly based on empirical knowledge and strongly influenced by models emerging from elite team practices. The aim of the present study was to identify and analyze current pre-match warm-up practices in elite futsal. Forty-three elite players were analyzed during their pre-match warm-up routines during the Portuguese Futsal Cup Final 8. Warm-up tasks were classified according to duration, type of activity, sequence, and structure. External load variables included the total distance covered, total distance covered per minute, running distance per minute, sprinting distance per minute, number of accelerations per minute, and number of decelerations per minute. Results highlighted that warm-up routines lasted for 27.5 ± 9.2 min and included nine major different tasks. Open-skill activities were prioritized by coaches; competitive and non-competitive futsal-specific tasks were included in 90% of the total warm-up routines, with higher focus on non-competitive tasks (68% of total time). The intensity progressively increased during warm-ups, mainly because of the higher number of accelerations and decelerations per minute. Pre-match warm-up routines strongly endorse futsal-specific and representative tasks in order to establish pre-match settings able to prepare players for the upcoming game. When designing pre-match warm-up routines, coaches should be aware that duration, sequence, and type of tasks may affect players’ acute performance and readiness.
Nuno Silva; Bruno Travassos; Bruno Gonçalves; João Brito; Eduardo Abade. Pre-match Warm-Up Dynamics and Workload in Elite Futsal. Frontiers in Psychology 2020, 11, 1 .
AMA StyleNuno Silva, Bruno Travassos, Bruno Gonçalves, João Brito, Eduardo Abade. Pre-match Warm-Up Dynamics and Workload in Elite Futsal. Frontiers in Psychology. 2020; 11 ():1.
Chicago/Turabian StyleNuno Silva; Bruno Travassos; Bruno Gonçalves; João Brito; Eduardo Abade. 2020. "Pre-match Warm-Up Dynamics and Workload in Elite Futsal." Frontiers in Psychology 11, no. : 1.
During the COVID-19 pandemic, the temporary closure of physical activity and sports facilities, and the generalized cancellation or postponement of sports events have a massive impact on social and economic development. In this study, we explored the feasibility of using tracking data from a football match to assess interpersonal contact between individuals by calculating two measures of respiratory exposure. The dynamic tracking positioning of all players and referees during one international football match was analyzed. For each individual, two measures of respiratory exposure were calculated, based on the 2 m interpersonal distance recommendations for contact tracing for COVID-19 control. Overall, individuals spent a median of 0.12 mm/ss (IQR = 0.45 mm/ss) exposed to interpersonal contact of fewer than 2 m from others. The highest value of exposure was observed between two players of opposing teams (6.35 mm/ss). The results suggest that tracking data can be used to assess respiratory exposure to interpersonal contact in team sports, such as football. The measures of exposure calculated can be used to the prompt identification of high-risk contacts of COVID-19 cases during a match or a training session, but also the risk stratification of different sports and physical activities.
Bruno Gonçalves; Romeu Mendes; Hugo Folgado; Pedro Figueiredo; Bruno Travassos; Henrique Barros; Adalberto Campos-Fernandes; Paulo Beckert; João Brito. Can Tracking Data Help in Assessing Interpersonal Contact Exposure in Team Sports during the COVID-19 Pandemic? Sensors 2020, 20, 6163 .
AMA StyleBruno Gonçalves, Romeu Mendes, Hugo Folgado, Pedro Figueiredo, Bruno Travassos, Henrique Barros, Adalberto Campos-Fernandes, Paulo Beckert, João Brito. Can Tracking Data Help in Assessing Interpersonal Contact Exposure in Team Sports during the COVID-19 Pandemic? Sensors. 2020; 20 (21):6163.
Chicago/Turabian StyleBruno Gonçalves; Romeu Mendes; Hugo Folgado; Pedro Figueiredo; Bruno Travassos; Henrique Barros; Adalberto Campos-Fernandes; Paulo Beckert; João Brito. 2020. "Can Tracking Data Help in Assessing Interpersonal Contact Exposure in Team Sports during the COVID-19 Pandemic?" Sensors 20, no. 21: 6163.
The aim of this investigation was to analyse the external workload, tactical individual actions of passing, and perceived internal load during unbalanced small-sided games. Ball possession formats (4v3, 4v4 and 4v5) were played in three different playing area dimensions (20 × 15m, 25 × 20m and 30 × 25m) by under-23 football players. Data were analysed under opposition-based perspective, by fixing one team (4vX), and by cooperation-based perspective according to teammates (4v2+X) for each playing area condition. GPS monitors were used to collect and compute external workloads (distance covered while walking, running, sprinting, and maximal speed) and tactical individual actions (passing with dominant and non-dominant foot, and maximum passing speed), and Borg Scale CR10 to evaluate rating of perceived exertion (RPE). On both opposition- and cooperation-based perspectives, significant differences were found on external workload variables for all game formats, with smaller areas associated with more distances covered while walking and larger areas with running and sprinting. Likewise, 4v3, 4v4 and 4v2 + 3 revealed significant differences for tactical individual actions, where a larger area was associated with an increase in repetitions. Medium playing area, for both perspectives, was associated with a higher RPE. Overall, larger playing areas with higher number of players involved promoted more high-intensity running, while the same area with fewer number of players fostered tactical individual actions. Smaller areas allowed to reduce game pace, especially in formats with fewer players. Different unbalance scenarios under dissimilar playing area dimensions promote diverse performance outcomes on player’s action capabilities.
Nuno André Nunes; Bruno Gonçalves; Diogo Coutinho; Fábio Yuzo Nakamura; Bruno Travassos. How playing area dimension and number of players constrain football performance during unbalanced ball possession games. International Journal of Sports Science & Coaching 2020, 16, 334 -343.
AMA StyleNuno André Nunes, Bruno Gonçalves, Diogo Coutinho, Fábio Yuzo Nakamura, Bruno Travassos. How playing area dimension and number of players constrain football performance during unbalanced ball possession games. International Journal of Sports Science & Coaching. 2020; 16 (2):334-343.
Chicago/Turabian StyleNuno André Nunes; Bruno Gonçalves; Diogo Coutinho; Fábio Yuzo Nakamura; Bruno Travassos. 2020. "How playing area dimension and number of players constrain football performance during unbalanced ball possession games." International Journal of Sports Science & Coaching 16, no. 2: 334-343.
Recent years have seen an increasing body of research into the evaluation of the team-level technical-tactical performance in association football using match events data. However, most studies used mono-dimensional approach and modeled the influence of each performance aspects on match result in isolation, which limited the interpretability of the results. The study was aimed to apply a state-of-the-art algorithm to the ranking of team performance and exploitation of key performance features in relation to match outcome based on massive match dataset. Data of all 1200 matches from 2014 to 2018 Chinese Football Super League (CSL) were used. From the original 164 match events, we extracted 22 features that were related to attacking, passing, and defending performance and most. A Linear Support Vector Classifier (LSVC) model was subsequently built with these 22 input features and trained in order to rank the teams by their performance and analyze the features that influence most match outcome (win/not win), with the dataset being divided into a ratio of 4:1 to train and validate the model. The results have shown that the data-driven LSVC model displayed a prediction accuracy of 0.83 and the ranking of teams’ match performance and prediction of teams’ league standings were highly correlated with their actual ranking. Saves, pass success and shot on target in penalty area were demonstrated as top positive features for winning whereas shots on target during open play, pass and bad shot% were three negative features most influential for the match result. The team ranks of all teams were highly correlated with their real final league rankings. In general, CSL winning teams build their success based on defensive ability and shooting accuracy, and high-ranked teams could always maintain better performance than their counterparts. The team-rank framework could provide a consolidated and complex approach to evaluate the match performance quality of the teams, refining decisions-making during match preparation and player transfer at different periods of the season.
Yuesen Li; Runqing Ma; Bruno Gonçalves; Bingnan Gong; Yixiong Cui; Yanfei Shen. Data-driven team ranking and match performance analysis in Chinese Football Super League. Chaos, Solitons & Fractals 2020, 141, 110330 .
AMA StyleYuesen Li, Runqing Ma, Bruno Gonçalves, Bingnan Gong, Yixiong Cui, Yanfei Shen. Data-driven team ranking and match performance analysis in Chinese Football Super League. Chaos, Solitons & Fractals. 2020; 141 ():110330.
Chicago/Turabian StyleYuesen Li; Runqing Ma; Bruno Gonçalves; Bingnan Gong; Yixiong Cui; Yanfei Shen. 2020. "Data-driven team ranking and match performance analysis in Chinese Football Super League." Chaos, Solitons & Fractals 141, no. : 110330.
Understanding the physical demands of futsal requires a precise quantification of the players’ activities during match play. This study aimed to (1) describe external load, identifying the differences between the first and second halves in official futsal matches; (2) identify the most important external workload metrics to profile the players; and (3) identify the collinearity between variables in the analysis of physical performance of futsal players. Match external load data were collected from male players (n = 28) in six games of the Final Eight of the Portuguese Futsal Cup 2018. The players increased the distance covered per minute at 12–18 km/h in the second half (p < 0.01). Dynamic stress load also increased in the second half (p = 0.01). The variables that best predicted the physical profile of each player were decelerations (predictor importance, PI = 1), walking (PI = 1), sprinting (PI = 1), jogging (PI = 0.997), total distance covered per minute (PI = 0.992), and metabolic power (PI = 0.989). Decelerations showed the highest association with the clusters levels (p < 0.001; PI = 1); this suggests decelerations as a potential candidate for best analyzing the physical load of futsal players. Overall, the data from this exploratory study suggest that distance covered per minute (m/min), number of sprints (>18 km/h), decelerations (greater than-2 m/s), and metabolic power (W/kg) are the variables that most discriminate the load intensity of elite futsal players.
João Nuno Ribeiro; Bruno Gonçalves; Diogo Coutinho; João Brito; Jaime Sampaio; Bruno Travassos. Activity Profile and Physical Performance of Match Play in Elite Futsal Players. Frontiers in Psychology 2020, 11, 1709 .
AMA StyleJoão Nuno Ribeiro, Bruno Gonçalves, Diogo Coutinho, João Brito, Jaime Sampaio, Bruno Travassos. Activity Profile and Physical Performance of Match Play in Elite Futsal Players. Frontiers in Psychology. 2020; 11 ():1709.
Chicago/Turabian StyleJoão Nuno Ribeiro; Bruno Gonçalves; Diogo Coutinho; João Brito; Jaime Sampaio; Bruno Travassos. 2020. "Activity Profile and Physical Performance of Match Play in Elite Futsal Players." Frontiers in Psychology 11, no. : 1709.
El propósito de este estudio fue identificar los efectos a corto plazo en las respuestas físicas, técnicas y tácticas de jóvenes jugadores de baloncesto cuando la dimensión de la cancha aumenta 1-m de ancho en cada lado. Catorce jugadores jóvenes participaron en juegos simulados de baloncesto de 5 vs. 5, en dos condiciones diferentes: cancha regular (28x15m) y cancha más amplia (28x17m, 1-m de ancho a cada lado). Además de la evaluación de los indicadores físicos y técnicos, también se utilizaron datos de posición para calcular las siguientes variables: distancia al oponente más cercano, distancia al compañero de equipo más cercano, coeficiente de dispersión del equipo y distancia entre los centroides de los equipos. Los resultados indicaron que, en la condición de cancha más amplia, la dispersión de las trayectorias de movimiento de los jugadores durante la fase ofensiva aumentó, lo que tuvo ligeras repercusiones en sus respuestas físicas y en los patrones de juego de los equipos. En contrapartida, durante la fase defensiva, los jugadores tienden a moverse dentro de las referencias espaciales regulares, independientemente de la manipulación del ancho de la cancha. En general, este estudio enfatiza que los efectos a corto plazo de cambiar las dimensiones de la cancha son relativamente ligeros, lo que sugiere que las restricciones informativas pueden requerir bastante más tiempo para producir cambios concretos en el rendimiento de los jugadores. This study aimed to identify short-term effects in basketball players’ physical responses, technical performance, and tactical behaviour when the court dimension is increased 1-m wide to each side. Fourteen youth players participated in 5 vs. 5 simulated basketball games, under two different conditions: regular court (28x15m) and wider court (28x17m, 1-m wider for each side). Besides the assessment of physical and technical indicators, positional data were also used to compute the following variables: distance to the nearest opponent, distance to the nearest teammate, stretch-index and distance between centroids. Results indicated that in the wider court condition, the dispersion of player’s displacement trajectories during the offensive phase increased, which had slight repercussions on their physical responses and in the teams’ playing patterns. Conversely, during the defensive phase, players tended to move within the regular spatial references, regardless of court width manipulation. Overall, this study emphasizes that short-term effects of changing the court dimensions are relatively negligible, suggesting that informational constraints might require longer time-scales to yield robust changes in players’ performance. Este estudo teve como objectivo identificar os efeitos a curto prazo na performance física, técnica e tática de jovens jogadores de basquetebol, quando a largura do campo é aumentada 1-m para cada lado. Catorze jovens jogadores participaram em jogos simulados de 5 vs. 5, em dois contextos distintos: campo regular (28x17m) e campo amplo (28x17m, 1-m mais largo para ambos os lados). Paralelamente à avaliação de indicadores físicos e técnicos, foram também recolhidos dados posicionais, com o intuito de calcular as seguintes variáveis: distância ao oponente mais próximo, distância ao companheiro de equipa mais próximo, coeficiente de dispersão da equipa e distancia entre os centroides das equipas. Os resultados demonstraram que no contexto de campo amplo, a dispersão das trajetórias de movimento dos jogadores aumentou durante a fase ofensiva, o que acarretou ligeiras repercussões nos perfis físicos e nos padrões de jogo das equipas. Em contrapartida, durante a fase defensiva, os jogadores tendem a mover-se dentro dos referenciais espaciais, independentemente da manipulação do tamanho do campo. No geral, este estudo realçou que os efeitos a curto prazo de alterar as dimensões do campo são pouco expressivos, o que sugere que os constrangimentos de informação podem requerer substancialmente mais tempo para produzir alterações concretas no rendimento dos jogadores.
Nuno Mateus; Bruno Gonçalves; Juliana Exel; Pedro Esteves; Jaime Sampaio. Short-term effects of adding 1-m wide to each side of the basketball court on youth players’ performance. Cuadernos de Psicología del Deporte 2020, 20, 82 -94.
AMA StyleNuno Mateus, Bruno Gonçalves, Juliana Exel, Pedro Esteves, Jaime Sampaio. Short-term effects of adding 1-m wide to each side of the basketball court on youth players’ performance. Cuadernos de Psicología del Deporte. 2020; 20 (3):82-94.
Chicago/Turabian StyleNuno Mateus; Bruno Gonçalves; Juliana Exel; Pedro Esteves; Jaime Sampaio. 2020. "Short-term effects of adding 1-m wide to each side of the basketball court on youth players’ performance." Cuadernos de Psicología del Deporte 20, no. 3: 82-94.
This study aimed to explore the effects of playing different unbalanced ball possession small-sided games on external workload (distance covered while walking, running, and sprinting, and max speed), tactical individual actions (number of passes with dominant and non-dominant foot), and internal load (rating of perceived exertion, RPE) in under-23 soccer players. Participants played 4v2, 4v3, 4v4, 4v5, and 4v6 small-sided games (SSGs) on a 30 × 25 m playing area. Data were analyzed under an opponent-based perspective, by fixing one team (4vX), and by cooperation-based perspective according to teammates (4v2+X). Global Position System (GPS) monitors were used to collect and compute external workloads and individual tactical actions, and Borg Scale CR10 was used to evaluate RPE. High-Superiority (4v2), Superiority (4v3), and Very Low-Cooperation (4v2+0) formats allow players in balanced teams to cover more distance while walking; on the other side, Inferiority (4v5), High-Inferiority (4v6), and Very High-Cooperation (4v2+4) allow players to sprint more and practice more tactical individual actions as a resultant emergent behavior; all players in SSG conditions with a lower number of conditions, perceived the exercise as more intense, especially in situations with less than two players. Overall, playing in high inferiority situations (4v2 and 4v6) may be used to increase physical demand for the outnumbered team, while coaches may use low superiority situations to adjust the task complexity when developing the players’ tactical individual actions.
Nuno André Nunes; Bruno Gonçalves; Diogo Coutinho; Bruno Travassos. How Numerical Unbalance Constraints Physical and Tactical Individual Demands of Ball Possession Small-Sided Soccer Games. Frontiers in Psychology 2020, 11, 1464 .
AMA StyleNuno André Nunes, Bruno Gonçalves, Diogo Coutinho, Bruno Travassos. How Numerical Unbalance Constraints Physical and Tactical Individual Demands of Ball Possession Small-Sided Soccer Games. Frontiers in Psychology. 2020; 11 ():1464.
Chicago/Turabian StyleNuno André Nunes; Bruno Gonçalves; Diogo Coutinho; Bruno Travassos. 2020. "How Numerical Unbalance Constraints Physical and Tactical Individual Demands of Ball Possession Small-Sided Soccer Games." Frontiers in Psychology 11, no. : 1464.
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 were contrasted between match winning and losing players. All comparisons were realized via standardized (Cohen’s d) mean differences and uncertainty in the true differences was assessed using non-clinical magnitude-based inferences. Results showed that there was possibly to very likely decreases in the serve, net and running related variables (mean difference, ±90%CL: -0.16, ±0.14 to -0.45, ±0.24, small) and an increase in the return and winner related variables (0.17, ±0.24 to 0.24, ±0.14, small) in the last sets when compared to the initial sets, indicating the influence of match fatigue and the player’s choice of match tactics and pacing strategy. Besides, winning players were revealed to have lower CV values in most of performance variables (-0.16, ±0.24 to -0.82, ±0.23, small to moderate) except for the second serve, winner, and physical performance variables (0.25, ±0.26 to 1.6, ±0.25, small to large), indicating that they would sacrifice the consistency to gain more aggressiveness and to dominate the match.
Yixiong Cui; Haoyang Liu; Miguel-Ángel Gómez; Hongyou Liu; Bruno Gonçalves. Set-to-set Performance Variation in Tennis Grand Slams: Play with Consistency and Risks. Journal of Human Kinetics 2020, 73, 153 -163.
AMA StyleYixiong Cui, Haoyang Liu, Miguel-Ángel Gómez, Hongyou Liu, Bruno Gonçalves. Set-to-set Performance Variation in Tennis Grand Slams: Play with Consistency and Risks. Journal of Human Kinetics. 2020; 73 (1):153-163.
Chicago/Turabian StyleYixiong Cui; Haoyang Liu; Miguel-Ángel Gómez; Hongyou Liu; Bruno Gonçalves. 2020. "Set-to-set Performance Variation in Tennis Grand Slams: Play with Consistency and Risks." Journal of Human Kinetics 73, no. 1: 153-163.
Baptista, J, Travassos, B, Gonçalves, B, Mourão, P, Viana, JL, and Sampaio, J. Exploring the effects of playing formations on tactical behavior and external workload during football small-sided games. J Strength Cond Res 34(7): 2024–2030, 2020—This study aimed to identify the effects of playing formations on tactical behavior and external workload during football small-sided games. Twenty-three semiprofessional footballers integrated 3 different playing formations in a 7-a-side small-sided game, according to their specific player positions: team 4:3:0 (4 defenders and 3 midfielders); team 4:1:2 (4 defenders, 1 midfielder, and 2 forwards); and team 0:4:3 (4 midfielders and 3 forwards). Based on players' movement trajectories, the following individual and collective tactical variables were calculated: total distance covered and distance covered while walking, jogging, running, and sprinting, distance from each player to both own-team centroid and opponent-team centroid, individual area, team length, team width, and surface area. Approximate entropy was computed to identify the regularity of each variable. The team 4:3:0 promoted players' space exploration with moderate physical efforts. The team 4:1:2 promoted compactness and regularity of the team with increase in the physical efforts. The team 0:4:3 promoted team balance and adaptability on space coverage with increase in physical efforts. Concluding, different playing formations support different game dynamics, and variations on external load were directly linked with the variations on tactical behavior. The analysis of tactical behavior through quantification of variability of patterns of play and quantification of distance covered at different velocities were the most useful information for the analysis of the effects of practice task manipulations. Therefore, in a practical sense, strength and conditioning coaches should plan and monitor these tasks in interaction with the head coaches.
Jorge Baptista; Bruno Travassos; Bruno Gonçalves; Paulo Mourão; João L. Viana; Jaime Sampaio. Exploring the Effects of Playing Formations on Tactical Behavior and External Workload During Football Small-Sided Games. Journal of Strength and Conditioning Research 2020, 34, 2024 -2030.
AMA StyleJorge Baptista, Bruno Travassos, Bruno Gonçalves, Paulo Mourão, João L. Viana, Jaime Sampaio. Exploring the Effects of Playing Formations on Tactical Behavior and External Workload During Football Small-Sided Games. Journal of Strength and Conditioning Research. 2020; 34 (7):2024-2030.
Chicago/Turabian StyleJorge Baptista; Bruno Travassos; Bruno Gonçalves; Paulo Mourão; João L. Viana; Jaime Sampaio. 2020. "Exploring the Effects of Playing Formations on Tactical Behavior and External Workload During Football Small-Sided Games." Journal of Strength and Conditioning Research 34, no. 7: 2024-2030.
Collective behavior is a hallmark of every living system and utilizing methods from statistical physics (such as correlation functions) could aid in our understanding of their underlying rules. We analyzed five football (soccer) matches as this game provides a unique but yet mostly unexplored example to study a system of collective cooperation and competition. The aim of our study was to analyze the collective motion patterns exhibited by football players to unfold the underlying coordination among them in order to understand collective strategies associated with team performance. By analyzing pairwise relationships among all the players using spatio-temporal correlation functions we reveal that there exist identifiable collective dynamics that characterize winning and losing teams. Using our metric we find clear and robust differences between the players, indicating a difference in their behavior and their interactions. And this enables us to assign a unique behavioral pattern - a ‘fingerprint’ - for each individual and for each team. Furthermore, we reveal there exists a relationship between the market value of the players and the metrics introduced here, suggesting that these metrics could potentially serve as valuable performance indicators in the future, with applications ranging from talent identification to player scouting. In a broader context team sports could open up new directions for quantitative analyses of human collective behavior.
Rui Marcelino; Jaime Sampaio; Guy Amichay; Bruno Gonçalves; Iain D. Couzin; Máté Nagy. Collective movement analysis reveals coordination tactics of team players in football matches. Chaos, Solitons & Fractals 2020, 138, 109831 .
AMA StyleRui Marcelino, Jaime Sampaio, Guy Amichay, Bruno Gonçalves, Iain D. Couzin, Máté Nagy. Collective movement analysis reveals coordination tactics of team players in football matches. Chaos, Solitons & Fractals. 2020; 138 ():109831.
Chicago/Turabian StyleRui Marcelino; Jaime Sampaio; Guy Amichay; Bruno Gonçalves; Iain D. Couzin; Máté Nagy. 2020. "Collective movement analysis reveals coordination tactics of team players in football matches." Chaos, Solitons & Fractals 138, no. : 109831.
The study aimed to identify how the manipulation of knowledge regarding a training task duration constrains the pacing and tactical behaviour of soccer players when playing small-sided games (SSG). Twenty professional and experienced soccer players participated in a cross-sectional field study using three conditions: not informed on the duration of the SSG, which ended after 20 min (Unknown Condition); briefed about playing the SSG for 10 min, but after they completed the 10-min game, they were requested to complete another 10 min (Partial Condition) and informed before that they would play for 20 min (Known Condition). A global positioning system was used to measure the total distance covered and distances of different exercise training zones (walking to sprinting) and to access the dynamic players positioning through the distance from each player to all the teammates and opponents. Additionally, approximate entropy was measured to identify the regularity pattern of each gathered individual variable. The results indicate that the first 10 min of each scenario presented a higher physical impact independently of the initial information. During this time, the tactical behaviour also revealed higher variability. An increase in the distance of the teammates during the second period of 10-min for the Known scenario was also found, which may result from a lower pacing strategy. This study showed that the prior knowledge of the task duration led to different physical and tactical behaviours of the players. Furthermore, the relationship between the physical impact and the regularity of team game patterns should be well analysed by the coach, because the physical impact may be harmful to the development of the collective organization of the team.
Ricardo Ferraz; Bruno Gonçalves; Diogo Coutinho; Rafael Oliveira; Bruno Travassos; Jaime Sampaio; Mário C. Marques. Effects of Knowing the Task’s Duration on Soccer Players’ Positioning and Pacing Behaviour during Small-Sided Games. International Journal of Environmental Research and Public Health 2020, 17, 3843 .
AMA StyleRicardo Ferraz, Bruno Gonçalves, Diogo Coutinho, Rafael Oliveira, Bruno Travassos, Jaime Sampaio, Mário C. Marques. Effects of Knowing the Task’s Duration on Soccer Players’ Positioning and Pacing Behaviour during Small-Sided Games. International Journal of Environmental Research and Public Health. 2020; 17 (11):3843.
Chicago/Turabian StyleRicardo Ferraz; Bruno Gonçalves; Diogo Coutinho; Rafael Oliveira; Bruno Travassos; Jaime Sampaio; Mário C. Marques. 2020. "Effects of Knowing the Task’s Duration on Soccer Players’ Positioning and Pacing Behaviour during Small-Sided Games." International Journal of Environmental Research and Public Health 17, no. 11: 3843.
The aim of this study was to investigate the effects of playing area manipulation (20 × 15 m, 25 × 20 m and 30 × 25 m) on external workloads (total distance covered, distance covered while walking, running and sprinting, number of sprints, maximum sprint speed), internal load perceptions (rating of perceived exertion) and technical actions of passing (number of passes with dominant and non-dominant foot, and maximum passing speed) during 4v4 ball possession small-sided and conditioned games in under-11, under-15 and under-23 soccer players. Results showed higher values in the large playing area for under-11 in the distance covered in different speed zones, sprint number and RPE (all p <.001) for under-15 in sprints number (p <.01) and maximum sprint speed (p =.02), and for under-23 in both RPE and sprint numbers (p <.01). Although no significant differences were found on technical actions, it was still possible to notice some effects through pairwise comparison. High-intensity running was promoted on larger playing areas, where under-11 s were also able to perform more technical actions of passing. Opposite, under-23s were able to perform more passing on smaller playing areas, where under-11 s perceived the exercise more intense. The impact of different playing areas was reduced for the under-15.
Nuno André Nunes; Bruno Gonçalves; Keith Davids; Pedro Esteves; Bruno Travassos. How manipulation of playing area dimensions in ball possession games constrains physical effort and technical actions in under-11, under-15 and under-23 soccer players. Research in Sports Medicine 2020, 29, 170 -184.
AMA StyleNuno André Nunes, Bruno Gonçalves, Keith Davids, Pedro Esteves, Bruno Travassos. How manipulation of playing area dimensions in ball possession games constrains physical effort and technical actions in under-11, under-15 and under-23 soccer players. Research in Sports Medicine. 2020; 29 (2):170-184.
Chicago/Turabian StyleNuno André Nunes; Bruno Gonçalves; Keith Davids; Pedro Esteves; Bruno Travassos. 2020. "How manipulation of playing area dimensions in ball possession games constrains physical effort and technical actions in under-11, under-15 and under-23 soccer players." Research in Sports Medicine 29, no. 2: 170-184.
The aim of this study was two-fold: (i) to identify differences in the game performance profiles of basketball players in Euroleague and European national championships; and (ii) to analyse the influence of player-related (e.g. age or court-position) and contextual variables (e.g. distance travelled or game break) in players’ game-related statistics. Archival data from 2014/2015 and 2015/2016 seasons ( n = 16,268 individual game performance records) of Euroleague and European national championships were separately analyzed using a two-step cluster model and then a discriminant analysis to differentiate the obtained groups. The clustering process allowed identifying three and five different performance player profiles for Euroleague and national championships, respectively. The discriminant analysis identified differences in Euroleague playing profiles, particularly related to performers’ age and court-position. In national championships, this trend was not observed. Regardless of the competition, a relationship was perceived between players’ performance and minutes played; conversely, the players’ performance seems to not be affected by contextual variables. The current results provide evidence of different players’ profiles in elite basketball to coaches regarding the influence of player-related and contextual variables. Coaching staffs may account for this information for better management and understanding of their team composition when playing in different competitions.
Nuno Mateus; Pedro Esteves; Bruno Gonçalves; Ivan Torres; Miguel Angel Gomez; Jorge Arede; Nuno Leite. Clustering performance in the European Basketball according to players’ characteristics and contextual variables. International Journal of Sports Science & Coaching 2020, 15, 405 -411.
AMA StyleNuno Mateus, Pedro Esteves, Bruno Gonçalves, Ivan Torres, Miguel Angel Gomez, Jorge Arede, Nuno Leite. Clustering performance in the European Basketball according to players’ characteristics and contextual variables. International Journal of Sports Science & Coaching. 2020; 15 (3):405-411.
Chicago/Turabian StyleNuno Mateus; Pedro Esteves; Bruno Gonçalves; Ivan Torres; Miguel Angel Gomez; Jorge Arede; Nuno Leite. 2020. "Clustering performance in the European Basketball according to players’ characteristics and contextual variables." International Journal of Sports Science & Coaching 15, no. 3: 405-411.
This study aimed to identify the effects of manipulating the ball type in players’ physical, technical, creative and tactical performance in two small-sided games situations: 4-a-side and 6-a-side. There were four conditions: (i) Football, using regular football ball; (ii) Handball, using handball ball; (iii) Rugby, playing with rugby ball, and (d) Mixed, at every 2 min the ball type was randomly changed. Players’ technical and creative actions were analysed through notational analysis, while GPS positional data were used to process the physical and tactical variables. During the 4-a-side, the rugby and mixed conditions induced more effects. From the physical perspective, there were moderate decreases in the total distance covered (−11.1%; ±3.1% and −6.2; ±3.6) and distance covered while jogging (−11.9%; ±3.6% and −8.0; ±3.9) in both scenarios, respectively. In tactics, there were small to moderate decreases in both conditions in the distance between team’s centroids (−5.5; ±6.0 and −6.8%; ±5.1%) and effective playing space (−16.2; ±9.8 and −20.6; ±12.3), respectively. In turn, all variables were affected by the ball type modification during the 6-a-side compared to the Football balls. Modifying the type of ball promoted small to moderate decreases in the number of successful passes and dribbles, in the fluency and versatility, as well as in most of the physical variables. Additionally, changing the ball type has also affected (small decreases) in the regularity in the distance between teams. Coaches may promote variability in the training tasks using different balls to develop the players’ adaptive movement behaviours.
Sara Santos; Diogo Coutinho; Bruno Gonçalves; Eduardo André De Azevedo Abade; Bruno Pasquarelli; Jaime Sampaio. Effects of manipulating ball type on youth footballers’ performance during small-sided games. International Journal of Sports Science & Coaching 2020, 15, 170 -183.
AMA StyleSara Santos, Diogo Coutinho, Bruno Gonçalves, Eduardo André De Azevedo Abade, Bruno Pasquarelli, Jaime Sampaio. Effects of manipulating ball type on youth footballers’ performance during small-sided games. International Journal of Sports Science & Coaching. 2020; 15 (2):170-183.
Chicago/Turabian StyleSara Santos; Diogo Coutinho; Bruno Gonçalves; Eduardo André De Azevedo Abade; Bruno Pasquarelli; Jaime Sampaio. 2020. "Effects of manipulating ball type on youth footballers’ performance during small-sided games." International Journal of Sports Science & Coaching 15, no. 2: 170-183.