Review
Nutrition & Dietetics
Alejandro Gomez-Bruton, Jorge Marin-Puyalto, Borja Muniz-Pardos, Angel Matute-Llorente, Juan Del Coso, Alba Gomez-Cabello, German Vicente-Rodriguez, Jose A. Casajus, Gabriel Lozano-Berges
Summary: This study reviewed the existing literature on the effects of caffeine supplementation on physical performance in adult female team-sport athletes. The meta-analysis results indicated that caffeine intake increased performance in specific team-sport skills, countermovement jump, total body impacts, and handgrip strength in women athletes. No effects were found on other performance variables such as perceived exertion, squat jumps, agility, and repeated sprint ability after fatigue.
Article
Sport Sciences
Alexandra Pizzera, Sylvain Laborde, Johannes Lahey, Patrick Wahl
Summary: This study examined the influence of physical and psychological stress on the decision-making performance of soccer referees. The results showed that experienced referees were able to cope with fatigue and psychological stress, but the effects varied under different stress conditions.
JOURNAL OF SPORTS SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Filip Skala, Erika Zemkova
Summary: Fatigue can affect the cognitive functioning of athletes, especially in sports with high cognitive demands. Prolonged exercise leads to a decline in decision-making, attention, and perception abilities of players. Mental fatigue and consequent decision-making deterioration can be triggered by a certain amount of time spent on cognitive tasks or exposure to smartphone applications. However, the specific effects depend on the intensity and duration of the fatigue-inducing tasks.
APPLIED SCIENCES-BASEL
(2022)
Article
Sport Sciences
Paul S. R. Goods, Brendan R. Scott, Brendyn Appleby, Denise Jennings, Peter Peeling, Brook Galna
Summary: This investigation examined the pre-tournament preparation and movement demands of the Australian male field-hockey team at the Tokyo 2020 Olympic Games. Movement data was collected over 7 months prior to and during the 13-day tournament. The results showed that the movement demands during the preparation period often exceeded the worst-case scenario, and midfielders covered significantly greater sprint distance than defenders during the tournament. Additionally, there was more variation in movement demands between players for accelerations, decelerations, and high-speed distance compared to duration and total distance.
JOURNAL OF SPORTS SCIENCES
(2023)
Article
Psychology, Multidisciplinary
Tiago Fernandes, Oleguer Camerino, Marta Castaner
Summary: The research found that successful teams' defenders coordinated their actions in recovering the ball through the first defender pressuring, teammates covering the same zone, among other behaviors. Additionally, the study emphasized the predominant role of the third defender in temporisation and covering zone behaviors, while factors such as opponent quality, match phases, and game situations also influenced defensive coordination.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ghaith Aloui, Souhail Hermassi, Lawrence D. Hayes, Roy J. Shephard, Mohamed Souhaiel Chelly, Rene Schwesig
Summary: The study found that incorporating biweekly upper limb loaded plyometric training using elastic bands into the in-season regimen of handball players significantly improved muscle power and throwing velocity. Therefore, such training method should be adopted as part of handball training program.
APPLIED SCIENCES-BASEL
(2021)
Review
Psychology, Applied
Elwira A. Halgas, Kyana H. J. van Eijndhoven, Josette M. P. Gevers, Travis J. Wiltshire, Joyce H. D. M. Westerink, Sonja Rispens
Summary: Wearable technology enables continuous collection of data from multiple people in various modalities, which can enhance team research and support by studying team coordination dynamics. However, the field is still at an early stage.
SMALL GROUP RESEARCH
(2023)
Article
Mathematics, Interdisciplinary Applications
Lishuang Wan, Fahad Abdullah Alqurashi, Jung Woo-Jin
Summary: In this study, a multidimensional evaluation index of motion function based on fatigue, muscle strength, and muscle contraction and relaxation ability is proposed. The mapping rules among fatigue characteristic value, muscle strength, fractal dimension characteristic change, and motion function state are investigated. The effectiveness of the filtering method is demonstrated by comparing the signals before and after median filtering. The muscle strength calculation method based on surface electromyography (sEMG) signals is analyzed, and the feasibility of the experimental method is validated by comparing the calculated muscle strength with the theoretical muscle strength. Furthermore, the distribution of different subjects in the multidimensional evaluation index space is studied, and the mapping relationship between sEMG signal characteristics and human motion function is comprehensively discussed based on theory and data.
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
(2022)
Article
Physics, Multidisciplinary
Jose E. Teixeira, Miguel Leal, Ricardo Ferraz, Joana Ribeiro, Jose M. Cachada, Tiago M. Barbosa, Antonio M. Monteiro, Pedro Forte
Summary: In a Portuguese professional football team, midfielders and wide midfielders covered significantly greater total distance and average speed during matches, while wide midfielders and fullbacks showed better performance in high-speed running and sprinting. Match running performance of players in different positions was influenced by match location, quality of opposition, and match outcome.
Article
Computer Science, Information Systems
Pramod Murthy, Bertram Taetz, Arpit Lekhra, Didier Stricker
Summary: This article introduces a DiveNet action localization module for detecting springboard diving sports actions in an unconstrained environment. The module utilizes a Temporal Convolution Network (TCN) for backbone feature extraction, enabling low latency diving action localization. They estimate the divers' center of mass trajectory and peak dive height using temporal information provided by the action localization step through projectile motion formulas. They also train a DiveNet pose regression network for direct physical parameter estimation of the diving pose. Additionally, a new homography computation method is proposed for representing physical parameters in metric scale without calibration.
Review
Nutrition & Dietetics
Olga Lopez-Torres, Celia Rodriguez-Longobardo, Raquel Capel-Escoriza, Valentin E. Fernandez-Elias
Summary: This systematic review and meta-analysis summarized the effects of ergogenic aids used by female athletes on sports performance. The results showed that caffeine improved jumping performance, isometric strength, and the number of repetitions till failure. Caffeine and sodium phosphate improved sprint performance. Taurine, caffeine, and beta-alanine improved aerobic tests. More studies are needed to examine the effects of different ergogenic aids on female athletes' performance.
Article
Business
Kenneth Tai, Sejin Keem, Ki Young Lee, Eugene Kim
Summary: This research expands on envy research by considering the influence of envy and gender congruence on interpersonal dynamics and team performance at the dyadic level. The study finds that envious employees are more likely to engage in interpersonal deviance towards envied team members, while envied employees are more likely to seek advice from envious team members. Gender congruence further impacts these relationships, with different patterns observed for males and females.
JOURNAL OF MANAGEMENT
(2022)
Article
Public, Environmental & Occupational Health
Karel Fromel, Josef Mitas, Dorota Groffik, Michal Kudlacek, Pavel Hap
Summary: This study aimed to investigate the preferences of team sports (TS) among Czech and Polish adolescents in different educational and sports environments, and the impact of agreement between preferred and participated TS on their physical activity (PA) levels and meeting PA recommendations. The results showed that agreement between preferences and participation in TS increased vigorous PA and had a significant effect on total PA. Those who preferred and participated in TS were more likely to meet PA recommendations.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Physics, Multidisciplinary
Sierra F. Corbin, Tehran J. Davis
Summary: This paper compares the analysis of interpersonal motor coordination using single time series data from each actor to using multivariate time series data with cross-recurrence quantification analysis (CRQA). The results indicate that CRQA with multivariate time series is more sensitive in capturing changes in coordination dynamics caused by experimental manipulations.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2023)
Review
Psychology, Multidisciplinary
Shudian Cao, Soh Kim Geok, Samsilah Roslan, He Sun, Soh Kim Lam, Shaowen Qian
Summary: This study investigates the effects of mental fatigue on physical, technical, tactical, and cognitive performance in basketball. The results suggest that mental fatigue impairs technical skills and decision-making abilities, but the influences on physical and tactical performance have not been studied.
FRONTIERS IN PSYCHOLOGY
(2022)
Review
Hospitality, Leisure, Sport & Tourism
Nuno Coito, Keith Davids, Hugo Folgado, Teresa Bento, Bruno Travassos
Summary: This study systematically describes and analyzes the tracking systems, variables, and statistical methods used to evaluate the tactical behavior of players and teams in small-sided and conditioned games. Reliable tracking systems and positional variables for evaluating tactical behaviors are identified. The study also discusses the advantages and disadvantages of tracking systems and the issue of variable duplication.
RESEARCH QUARTERLY FOR EXERCISE AND SPORT
(2022)
Article
Sport Sciences
Anthony Weldon, Michael J. Duncan, Anthony Turner, David LaPlaca, Jaime Sampaio, Candice J. Christie
Summary: This study explores the practices of strength and conditioning coaches from different sports, countries, and expertise levels. The findings suggest that periodization strategies and physical testing are commonly used by coaches. Additionally, coaches expressed a desire for incorporating more technology into their programs and believe that technology will be a major future trend.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2022)
Article
Hospitality, Leisure, Sport & Tourism
Diogo Coutinho, Bruno Goncalves, Sara Santos, Bruno Travassos, Hugo Folgado, Jaime Sampaio
Summary: The study investigated how limiting the number of ball touches per player affected performance in small-sided games across different age groups. Results showed changes in longitudinal synchronization, passing success, and physical demands when touches were restricted, with an emphasis on passing skills but also an increase in unsuccessful actions.
INTERNATIONAL JOURNAL OF SPORTS SCIENCE & COACHING
(2022)
Article
Sport Sciences
Albert Canton, Carlota Torrents, Bruno Goncalves, Angel Ric, Filippo Salvioni, Juliana Exel, Jaime Sampaio
Summary: This study aimed to investigate how positioning the goals in diagonal configurations affects the external load and tactical behavior of young football players during small sided games. The results showed differences in walking distance, game pace, and length/width ratio between the diagonal scenarios.
Editorial Material
Sport Sciences
Grant Abt, Simon Jobson, Jean-Benoit Morin, Louis Passfield, Jaime Sampaio, Caroline Sunderland, Craig Twist
JOURNAL OF SPORTS SCIENCES
(2022)
Article
Multidisciplinary Sciences
Diogo Coutinho, Bruno Goncalves, Hugo Folgado, Bruno Travassos, Sara Santos, Jaime Sampaio
Summary: This study investigated how manipulating the color of training vests affects the individual and collective performance of football players in a medium-sided game. The results showed that players performed better in both offense and defense in the control condition, while they demonstrated more cohesion in the same color and mixed condition.
Article
Sport Sciences
Diogo Coutinho, Bruno Goncalves, Sara Santos, Bruno Travassos, Wolfgang Schollhorn, Jaime Sampaio
Summary: This study aimed to investigate the effects of different variations (individual, collective or individual-collective) on the performance of youth football players during small-sided games. The results showed that there were differences in behavior under different conditions, and coaches can choose different variations to optimize players' technical actions or develop their performance in different positions and team structures.
RESEARCH IN SPORTS MEDICINE
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Joao Nuno Ribeiro, Bruno Goncalves, Jordi Illa, Micael Couceiro, Jaime Sampaio, Bruno Travassos
Summary: This study aims to investigate the relationship between high-intensity activities performed per interchange rotations and match time variables in elite futsal players. The results show that playtime and work-rest ratio are key factors in differentiating match activity profiles. Players with longer playtime and a higher work-rest ratio are able to better repeat high-intensity activities after each rotation.
INTERNATIONAL JOURNAL OF SPORTS SCIENCE & COACHING
(2023)
Article
Sport Sciences
Sergio L. Jimenez, Nuno Mateus, Anthony Weldon, Alvaro Bustamante-Sanchez, Adam L. Kelly, Jaime Sampaio
Summary: This study examined the most demanding passages of play in elite youth soccer for congested and non-congested fixture schedules. Results showed that during congested fixtures, players' distance covered and player load declined, while statistical differences in other variables were minimal.
SCIENCE AND MEDICINE IN FOOTBALL
(2023)
Article
Neurosciences
Sara Santos, Diogo Coutinho, Bruno Goncalves, Jaime Sampaio
Summary: This study examined how the number of creative opponents affects the performance of youth players in small-sided football games. The results showed that facing more creative opponents led to an increase in individual space explored and variability in movement patterns. The players in different age groups showed different abilities and behaviors when facing creative opponents.
HUMAN MOVEMENT SCIENCE
(2023)
Article
Pediatrics
Nuno Coito, Hugo Folgado, Diogo Monteiro, Bruno Travassos
Summary: This study aimed to characterize the passing patterns that support collective tactical behavior in football players of different ages (U15, U17, and U19) in different field zones. The results showed that long and medium passes were more commonly used in areas close to the goals, while short passes were more commonly used in the middle area of the field, regardless of age. Older players (U17 and U19) tended to pass to more distant players in medium and long passes. These findings can help coaches design suitable training activities based on players' ages and adjust for field space and numerical relationships, facilitating a better transition from training to competition.
Article
Sport Sciences
A. A. Vasquez-Bonilla, P. Tomas-Carus, J. Brazo-Sayavera, J. Malta, H. Folgado, G. Olcina
Summary: This study measured the muscle oxygen saturation (SmO2) and its relationship with body composition in the vastus lateralis. The results showed that SmO2 difference was related to strength asymmetry, and greater muscle mass was associated with better muscle oxygen extraction. The study highlights the use of SmO2 dynamics in identifying muscle metabolism and imbalances in team sports.
Article
Rheumatology
P. Tomas-Carus, C. Biehl-Printes, J. del Pozo-Cruz, J. A. Parraca, H. Folgado, M. A. Perez-Sousa
Summary: This study aimed to investigate the effects of respiratory muscle training on respiratory efficiency and health-related quality of life in women with FM. The results showed that RMT significantly improved respiratory efficiency and HRQoL, providing an effective therapy for FM patients.
CLINICAL AND EXPERIMENTAL RHEUMATOLOGY
(2022)
Article
Imaging Science & Photographic Technology
Salik Ram Khanal, Jaime Sampaio, Juliana Exel, Joao Barroso, Vitor Filipe
Summary: This study developed a non-contact method based on analyzing facial color changes to determine heart rate and exercise intensity. The results showed that a multiple polynomial regression model can accurately predict maximum heart rate percentage. These methods can be beneficial for exercise prescription and monitoring.
JOURNAL OF IMAGING
(2022)