Football Research Articles

The effects of horizontal deceleration training on sprint and countermovement jump neuromuscular performance qualities

ABSTRACT This study examined the effect of 6-week training to improve horizontal deceleration ability on sprint acceleration and countermovement jump (CMJ) neuromuscular performance (NMP) parameters. Twenty male soccer players were divided into the training (TRA), and the control (CON) group. Pre-and post-training players performed an acceleration-deceleration ability test (ADA) and a jump on a vertical axis dual force plate. ADA deceleration parameters were analysed using Kinovea Software. Distance-to-stop (DTS), time-to-stop (TTS), 20 m sprint time (t 20 m), CMJ parameters were measured at pre-post-training. The largest improvement was determined in the TRA in the t 20 m (effect size = 0.88). Despite the increase in the weight of the TRA, t 20 m was shortened by 5.62% in TRA and 1.91% in CON. Deceleration ability was evaluated with CMJ eccentric parameters. While the percentage change of eccentric peak force differed between the groups, eccentric peak power (11.84 vs. 14.57 W·kg–1, ds: 0.72) and velocity (0.91 vs. 1.05 m.s–1, ds: 0.70) increased. Accordingly, it was determined that the improvement in CMJ eccentric and concentric peak velocity was due to speed-based power output. The training improved the maximum horizontal deceleration ability and confirmed that concentric peak velocity, as well as CMJ eccentric parameters, is an important NMP determinant of horizontal deceleration ability.

Energetic and Neuromuscular Demands of Unresisted, Parachute- and Sled-Resisted Sprints in Youth Soccer Players: Differences Between Two Novel Determination Methods

The aim of this study was to analyze the differences in terms of (1) muscle activation patterns; (2) metabolic power (MP) and energy cost (EC) estimated via two determination methods (i.e., the Global Positioning System [GPS] and electromyography-based [EMG]); and (3) the apparent efficiency (AE) of 30-m linear sprints in seventeen elite U17 male soccer players performed under different conditions (i.e., unloaded sprint [US], parachute sprint [PS], and four incremental sled loads [SS15, SS30, SS45, SS60, corresponding to 15, 30, 45 and 60 kg of additional mass]). In a single testing session, each participant executed six trials (one attempt per sprint type). The results indicated that increasing the sled loads led to a linear increase in the relative contribution of the quadriceps (R2 = 0.98) and gluteus (R2 = 0.94) and a linear decrease in hamstring recruitment (R2 = 0.99). The MP during the US was significantly different from SS15, SS30, SS45, and SS60, as determined by the GPS and EMG approaches (p-values ranging from 0.01 to 0.001). Regarding EC, significant differences were found among the US and all sled conditions (i.e., SS15, SS30, SS45, and SS60) using the GPS and EMG methods (all p ≤ 0.001). Moreover, MP and EC determined via GPS were significantly lower in all sled conditions when compared to EMG (all p ≤ 0.001). The AE was significantly higher for the US when compared to the loaded sprinting conditions (all p ≤ 0.001). In conclusion, muscle activation patterns, MP and EC, and AE changed as a function of load in sled-resisted sprinting. Furthermore, GPS-derived MP and EC seemed to underestimate the actual neuromuscular and metabolic demands imposed on youth soccer players compared to EMG.

Testing in Football: A Narrative Review

Football clubs regularly test and monitor players, with different approaches reflecting player age and competitive level. This narrative review aims to summarise justifications for testing and commonly used testing protocols. We also aim to discuss the validity and reliability of specific tests used to assess football players and provide a holistic overview of protocols currently used in football or those demonstrating potential utility. The PubMed, SportDiscus, and Google Scholar databases were screened for relevant articles from inception to September 2024. Articles that met our inclusion criteria documented tests for several purposes, including talent identification or the assessment of growth/maturation, physiological capacity, sport-specific skill, health status, monitoring fatigue/recovery, training adaptation, and injury risk factors. We provide information on specific tests of anthropometry, physical capacity, biochemical markers, psychological indices, injury risk screening, sport-specific skills, and genetic profile and highlight where certain tests may require further evidence to support their use. The available evidence suggests that test selection and implementation are influenced by financial resources, coach perceptions, and playing schedules. The ability to conduct field-based testing at low cost and to test multiple players simultaneously appear to be key drivers of test development and implementation among practitioners working in elite football environments.

Psychophysiological effects of menstrual cycle in flag football players

Psychophysiological effects of menstrual cycle in flag football players

One-Side Weight Sports and the Impact of Their Load on the Feet and the Occurrence of Posture Disorders in Professional Football and Handball Players

The aim of this study was to evaluate center of pressure (CoP) changes in unilateral sports and examine how these changes affect the athlete’s feet, ankles, knees or posture. The study sample consisted of 40 professional male players (age: 19.4 ± 2.08 years; height: 165.78 ± 4.92 cm; weight: 59.04 ± 4.02 kg; BMI: 21.57 ± 2.22; foot size: 40.9 ± 1.6), divided by type of sport into group H—handball (n: 20) and group F—football (n: 20). To evaluate the monitored parameters, we used the instrumental diagnostic techniques: 3D laser footscan, baropodometric platform FreeStep and 2D Videography. We found no significant differences between the groups in the loading of the right and left foot (F: 8.3 ± 4.22; H: 7.7 ± 6.1) (p = 0.410). We found a significant difference in the load on the front and back of the left (p = 0.0079) and right foot (p = 0.0210) depending on the type of sport performed. Maximum and mean values of CoP (g/cm2) showed statistically significant differences depending on the sport performed (p < 0.0001). The shift in CoP (mm) from the norm depending on the sport performed was confirmed in the latero-lateral direction (p = 0.003), but not in the antero-posterior direction (p = 0.320). We found a difference in the angulation of the knees and heels depending on the sport played. Handball players showed higher knee varosity/valgosity (p = 0.015) and heel values than football players (p = 0.002). The handball players also confirmed a worse postural load and initial forward posture. The one-sided sports, handball and football, showed negative effects on the athlete’s movement system. These changes were more pronounced in handball players. Proper training programs should be applied in athletes’ daily routine to improve the negative effects of unilateral sports.

Acute responses to a potentiation warm-up protocol on sprint and change of direction in female football players: a randomized controlled study

Abstract Objectives To evaluate the acute effect of exposure to a potentiation warm-up protocol compared to a usual warm-up program. Design Randomized parallel control trial. Setting Synthetic grass in the club’s facilities (Portugal). Participants Seventeen female football players (age: 23.9 ± 3.9 years), were randomly allocated to a control (n = 8) and an experimental group (n = 9). To allocate the players, a table was computer-generated by a research team member with no involvement in the trial. Intervention The control group performed their usual warm-up program, while the experimental group performed a potentiation warm-up protocol with jumps combined with sprints with change of direction. Main outcomes measures The players were tested pre- and post-intervention for a 40-m linear sprint and pre-planned change of direction using the T-test. Statistical analysis An intention-to-treat analysis was performed, with all the participants originally randomized being involved. The normal distribution was verified by the Shapiro-Wilk test. The assumption of sphericity was analyzed. Effect sizes were calculated using partial eta squared. Results No significant pre-post differences in the T-test and in the 40-m sprint were detected for any group. However, in the T-test, large effect sizes in time increments were observed within the experimental (0.27 s; p > 0.05, ηp2 = 0.176) and control groups (0.06 s; p > 0.05, ηp2 = 0.176). Also, in the 40-m sprint, large effect sizes in time increments were observed within the experimental (0.05 s; p > 0.05, ηp2 = 0.251) and control groups (0.09 s; p > 0.05, ηp2 = 0.251). Conclusions The performance-enhancing ability of the potentiation method performed at warm-up was not verified when applied to female football players. Thus, the potentiation methods may not improve sprint and COD ability for this population. However, the lack of statistical significance may have been due to reduced statistical power, as three of four effects suggest acute performance impairment after a supposed potentiation-oriented warm-up. Nevertheless, the presence of a statistical type 2 error cannot be ruled out. Registration number (retrospectively registered) NCT06555185; Project URL: https://clinicaltrials.gov/study/NCT06555185.

The role of football video games in boosting cognitive abilities critical to football performance

Background and Aim: Football requires rapid decision-making and quick reaction times, crucial cognitive abilities that traditionally develop through physical training. This study explores whether football video games, which simulate real game scenarios, can enhance these cognitive abilities among college-level male football players. Materials and Methods: The study involved 51 football players from SRM Group of Institutions, divided into three groups: regular video game players (Group A), occasional players (Group B), and non-players (Group C). A mixed-methods approach was used, combining quantitative cognitive abilities tests (decision-making, reaction time, situational awareness). The video game used in the study was eFootball 2024 with participants engaging in gameplay over a period of 6 weeks. Tests were conducted before and after a set period of video game engagement. Data were analyzed using mixed-design ANOVA and Pearson’s correlation. Results: Significant improvements were observed in Group A across all cognitive abilities tested. Decision-making showed notable group and time effects (F (2, 48) = 5.76, p = 0.005, η² = 0.17; F (1, 48) = 12.54, p < 0.001, η² = 0.25), with interaction effects indicating substantial enhancements over time (F (2, 48) = 3.45, p = 0.035, η² = 0.08). Reaction time and situational awareness followed similar patterns, with significant group, time, and interaction effects. Correlation analysis revealed strong interrelations between the cognitive abilities, indicating that improvements in one area positively influenced others. Conclusion: Regular engagement with football video games significantly enhances cognitive abilities essential for football performance. These findings suggest that integrating video games into training programs could complement traditional methods, offering a valuable tool for cognitive development in sports.

Impact of VO2 Max Capacity And Application of Training Methods on the Effectiveness of Endurance Ability

This research aims to see the effectiveness of training methods and aerobic capacity (VO2 Max) to increase endurance capacity (aerobic capacity). The method used in this research is an experimental method, with the research sample being Karawang district football players. The independent variables of this research are interval training and vo2 max, while the dependent variable is general endurance (aerobic capacity). In carrying out research, the interval method will be given taking into account the high and low aerobic capacity. The results of the research show that the interval method has a significant influence on increasing endurance (aerobic capacity), and the interval method has an interdependence with the level of aerobic capacity in increasing endurance. Extensive intervals are suitable for athletes who have low aerobic capacity and have not been in the process for long. Intensive interval training is suitable for athletes who have moderate aerobic capacity and have been in the training process for quite a long time. And short intervals are suitable for athletes who have a high aerobic capacity and have been training for a long time. Providing the interval method needs to take into account the high and low levels of aerobic capacity, because the interval method is a fairly heavy training method which needs to take into account the aerobic capacity capital of the athlete who will be trained and whether or not they have been involved in the training process for a long time. Keywords: extensive intervals, intensive and short intervals, VO2 Max, Speed ​​Endurance

The Content and Game Action Weight of Senior Football Players as Goalkeeper

Football was and remains the number one sport, being very popular among the youth, both at the amateur and professional level. In recent years, specialists in several sports events, including sports games, have called for the differentiated training of athletes depending on their playing position. The players in the football teams are strictly specialized in playing positions, which are four in number: goalkeeper, defenders, midfielders, and forwards. The given article represents an extensive analysis of all the footballers’ actions in the position of Goalkeeper, here being analyzed in detail the content of the actions of the footballers in the position of Goalkeeper, as well as their weight in an official match. The recorded results will allow the design of a differentiated training program for footballers for the Goalkeeper position, which will allow its implementation in the sports training of senior goalkeepers.

Megaformer as a Rehabilitation Modality for Hamstring Strain Injury in Division I American Football: A Case Study

BACKGROUND: With athletes striving for peak performance, noncontact muscle strain injuries are increasingly common. Hamstring strain injuries (HSIs) make up the largest portion of noncontact injuries and provide further difficulty because of the high reinjury rate. This case study explores the Megaformer as a modality to treat HSIs with the potential to reduce the return to play timetable and recurrence rate. CASE PRESENTATION: A 23-year-old male American football player with a history of hamstring injuries presented with pain in the right proximal hamstring and deficits in strength and mobility testing as a result of sustained hyperflexion of the right hip with full knee extension. Magnetic resonance imaging (MRI) confirmed a recurrent proximal hamstring strain. OUTCOME AND FOLLOW-UP: Subsequent strength and range of motion testing revealed no impactful tenderness or pain during active participation or palpation after 9 days, and complete alleviation of symptoms at 6 weeks. No reinjury occurred during the remaining football season. DISCUSSION: This case study highlights possible advantageous features of the Megaformer as a recovery modality for HSIs. The Megaformer aims to improve flexibility, strengthen primary and secondary muscles, and enhance neuromuscular coordination to attempt to decrease the return to play timetable and reduce injury recurrence.

Enhancing Acceleration Capabilities in Professional Women’s Football Players: A Comparative Analysis of Game-Based Versus Resisted Sprint Trainings

The recognition of high-speed demands in football has led elite academies to prioritize acceleration capabilities for player selection and promotion, particularly given their fundamental role in the motor skills of professional players and their impact on goal-related opportunities. This study explored the effectiveness of game-based versus resisted sprint training methods in enhancing the acceleration abilities of professional women’s football players. Over the entire competitive period, the training load of 26 athletes (24.2 ± 3.7 years) was assessed using GPS devices, and sprint capabilities were evaluated through four 30-m acceleration tests spaced six weeks apart. Linear mixed models (LMMs) analyzed physical load parameters, including distance covered at high speeds, speed events, and maximum speed, with periods and players as fixed and random effects, respectively. Significant sprint performance improvements were observed across all intervals, particularly when high-intensity distance volumes were combined with resisted sprint training. Conversely, high-intensity running without additional stimuli also led to performance gains, albeit to a lesser extent. Both game-based and resisted sprint training methods were effective in enhancing acceleration capabilities, while the absence of specific sprint focus did not significantly alter sprint performance. These findings support the inclusion of tailored sprint training in athletic programs to optimize acceleration in women’s football players.

Investigating the Effect of Dry Needling on Myofascial Trigger Point in Soleus Muscle of Soccer Players with Medial Tibial Stress Syndrome

Introduction: This study investigates the impact of dry needling on myofascial trigger points in the soleus muscles among soccer players with medial tibial stress syndrome (MTSS). Materials and Methods: Soccer players diagnosed with MTSS were enlisted and randomly divided into two groups (11 participants in the experimental group [Group 1] and 11 participants in the control group [Group 2]). Pre-intervention measurements included repeated shuttle sprint ability, MTSS score, and pain pressure threshold (PPT) for both groups. In the experimental group, dry needling was performed on the soleus muscle, followed by active stretching and cryotherapy. The control group underwent active stretching of the soleus muscle and cryotherapy exclusively. Post-intervention measurements of repeated shuttle sprint ability, MTSS score, and PPT were taken for both groups after 2 days. Results: The experimental group exhibited a statistically significant improvement in PPT, MTSS score, and repeated shuttle sprint ability. Conversely, within the control group, statistically significant changes were observed only in PPT values through paired t-test assessment. Between-group analysis using an independent t-test revealed significant enhancement in PPT (P=0.000) and MTSS score (P=0.01) within the experimental group compared to the control group. Conclusion: Addressing myofascial trigger points in the soleus muscle through dry needling offers a more effective approach to treating MTSS than relying solely on muscle stretching.

Morphological and Performance Biomechanics Profiles of Draft Preparation American-Style Football Players

Background/Objectives: Using advanced methodologies may enhance athlete profiling. This study profiled morphological and laboratory-derived performance biomechanics by position of American-style football players training for the draft. Methods: Fifty-five players were categorized into three groups: Big (e.g., lineman; n = 17), Big–skill (e.g., tight end; n = 11), and Skill (e.g., receiver; n = 27). Body fat (BF%), lean body mass (LBM), and total body mass were measured using a bioelectrical impedance device. Running ground reaction force (GRF) and ground contact time (GCT) were obtained using an instrumented treadmill synchronized with a motion capture system. Dual uniaxial force plates captured countermovement jump height (CMJ-JH), normalized peak power (CMJ-NPP), and reactive strength. Asymmetry was calculated for running force, GCT, and CMJ eccentric and concentric impulse (IMP). MANOVA determined between-group differences, and radar plots for morphological and performance characteristics were created using Z-scores. Results: There was a between-group difference (F(26,80) = 5.70, p < 0.001; Wilk’s Λ = 0.123, partial η2 = 0.649). Fisher’s least squares difference post hoc analyses showed that participants in the Skill group had greater JH, CMJ-NPP, reactive strength, and running GRF values versus Big players but not Big–skill players (p < 0.05). Big athletes had greater BF%, LBM, total body mass, and GCT values than Skill and Big–skill athletes (p < 0.05). Big–skill players had greater GCT asymmetry than Skill and Big players (p < 0.05). Asymmetries in running forces, CMJ eccentric, and concentric IMP were not different (p > 0.05). Morphological and performance biomechanics differences are pronounced between Skill and Big players. Big–skill players possess characteristics from both groups. Laboratory-derived metrics offer precise values of running and jumping force strategies and body composition that can aid sports science researchers and practitioners in refining draft trainee profiles.

Forecasting extremes of football players’ performance in matches

This study evaluates the use of simple linear or piecewise linear predictive models to predict extreme performance metrics in soccer matches, based on historical training and to match data of soccer players from RKS Raków Częstochowa football club. The data were collected from January to June 2023. The collected training and matched data average is 9000 records per month. A standard workweek at the RKS Academy consisted of 5 training units and at least 1 match. The best individual models found predict selected game performance metrics with a relative error of 2.3%, suggesting an excellent model fit between prediction and the actual value. This is illustrated by input data metric called “Metabolic Time Zone 5 and 6 Per Distance”, and output data by “Decelarations Total Distance in Zone 5 and 6 Per Distance”—calculated for in 3 min sliding window and characterized by the highest value of the generated parameter based on High Metabolic Load Distance (HMLD). The result concerns models run on aggregated performance metrics developed in APEX-PRO system using expert knowledge in soccer training, while raw GPS location-based models performing worse but still acceptably. Although we believe that the accuracy of the models still has limited reliability, their clarity and up-to-date quality make them useful in the daily planning of training activities and the management of workloads that affect player performance in the upcoming match, as well as the tactical decisions of the coach. More accurate predictions are given by individual models compared to aggregated models (player position), but there are exceptions where group models also perform very well. Adding a second metric to the input did not show a significant difference in the analyzed examples (the results are very similar). Our findings indicate that the model based on metrics from the last match also effectively predict extreme motor performances occurring in the game. In the case of the analyzed player, it was at the input “Accelerations Total Time Per Distance in Zone 6” at the output “Distance in Zone 6”. Specific training or match parameters can be key in predicting exceptional soccer performance, but they can also vary depending on the analyzed player. This confirms the need for further analysis of this issue.

‘We wouldn’t have missed it for the world’: hosting a polycentric sporting mega event in pandemic times

ABSTRACT This paper examines the polycentric hosting of a Sporting Mega Event (SME) in pandemic times. Semi-structured interviews were conducted with 13 stakeholders in senior management positions who were involved in the planning, organisation, and delivery of the UEFA EURO 2020 football tournament in a sample of host cities. Three themes were developed that describe the varied perspectives of UEFA and host city representatives on how they responded to the challenge of hosting a SME during a pandemic. The first theme ‘Reorienting pre-pandemic plans’ presents an alternative model of tournament planning as a system of spontaneous order (Polanyi [1953] 1998), involving a large number of host cities mutually adjusting to COVID-19 policies and guidance. The second theme ‘Dialogue and managing conflict’ demonstrates how the usual overarching system of rules proved difficult for UEFA to standardise. The third theme ‘Putting COVID-19 policies into practice (or not)’ revealed that pandemic rules were not seen as useful to some fans and stadium staff, making their enforcement more difficult to implement. It remains to be seen whether the polycentric hosting of EURO 2020 will have lasting implications on UEFA’s governance over SMEs.

An Incongruent 2-Minute Stroop Task Alters the Response Time Performance in Semi-Elite Soccer Players: A Pilot Study

Introduction: Mental fatigue is a key factor in soccer that can affect physical performance. Mental fatigue protocols based on the Stroop test used in soccer involve extensive time, ranging from 10 to 30 min. Offering a protocol with a shorter duration that is more applicable in ecological situations seems to be an exciting challenge. Objective: To analyze the effects of a mental fatigue induction protocol (2 min Stroop test in its incongruent mode) on decision-making, response time, and technical execution accuracy in soccer players. Methods: A total of 18 semi-elite soccer male players, 25.83 (4.71) years from a Spanish soccer team, participated in this cross-sectional study. The 2 min incongruent Stroop test was used like mental fatigue protocol, followed by a specific analytical soccer task. The Wilcoxon signed-rank and Chi-squared tests were used to analyze the statistical differences. Results: A significant increase in participants’ response time after the fatigue protocol (p < 0.001; r = 0.878) was observed. Regarding the variables of correct decision (p = 0.457; r = 0.031) and technical execution accuracy (p = 1; r < 0.001), no significant differences were found. Additionally, no differences were observed between the first and second attempts of the 2 min incongruent Stroop test, in terms of execution accuracy, errors, or total words. Conclusions: The 2 min Stroop incongruent task may induce some degree of mental fatigue, leading to slower response time during certain technical tasks in semi-elite soccer players. However, this Stroop task was insufficient to promote significant changes in the accuracy of technical execution and the effectiveness of decision-making.

Evaluating bioenergetic pathway contributions from single to multiple sprints

This study aims to investigate the changes in bioenergetic pathway contributions during repeated sprint exercises with an increasing number of repetitions. Twelve male amateur soccer players executed a single 20 m sprint and three repeated-sprint protocols (5 × 20 m, 10 × 20 m, 15 × 20 m with 15-second rest intervals), analyzing oxidative, glycolytic, and ATP-PCr energy pathways using the PCr-LA-O2 method. Findings revealed a significant decline in energy expenditure and performance outputs as the number of sprint repetitions increased. While the oxidative and ATP-PCr pathways’ energy contributions significantly rose with more sprints, the glycolytic pathway’s contribution notably increased only up to the 10 × 20 m protocol, then stabilized. Although the ATP-PCr pathway’s energy contribution decreased slightly from sprints 1–5 to 11–15, it remained significantly higher than the oxidative and glycolytic pathways throughout. Initially, glycolytic contribution surpassed oxidative in sprints 1–5, equaled it in sprints 6–10, and fell below in sprints 11–15. Glycolytic activity, a major energy source initially (about 36%), diminished substantially with more sprints (below 7% in the 15th sprint). This indicates that the decrease in non-mitochondrial pathway energy, particularly glycolytic, outstrips the aerobic system’s increased tolerance. These findings offer physiological insights into the relationship between performance decrement and bioenergetic metabolism in repeated sprints.

Age-Related Differences and Reliability of a Field-Based Fitness Test Battery in Young Trained Footballers: The Role of Biological Age

Background: the purpose of this study was to analyze the reliability of a field-based fitness test battery in young trained football players, according to biological age. Methods: 197 young trained football players (12–19 years old) participated in the study. We measured anthropometric measurements (i.e., height, sitting height, length leg, and body mass), a bilateral vertical jumping test (CMJ), a progressive loading test of squats and hip thrust, acceleration and speed tests (10 m and 30 m sprint tests), a change-of-direction ability test (V–cut test), and a cardiorespiratory fitness test (30–15 intermittent fitness test). Statistical data are shown as the mean ± standard deviation by PHV group in tests and retests. Test reliability was assessed through the intraclass correlation coefficient (ICC), with an ICC above 0.9 being considered high. To evaluate accuracy and repeatability, standard error of measurement, coefficient of variation, and minimum detectable change at 90% were determined and Bland–Altman diagrams were used, establishing a statistical significance of p < 0.05. Results: All of the tests showed non-significant differences between the test and retest in the pooled sample (p > 0.05). Furthermore, all of them presented a trivial effect size (<0.2) and high intraclass correlation coefficients (>0.9), which indicates the high reproducibility of the tests, despite some of them presenting a significant difference between trials (i.e., the CMJ, 10 m sprint, V–cut, and squat tests). Low measurement errors were found for all tests (coefficient of variation [CV] = 4.39–9.39), except for the CMJ and the progressive loading test for squat and hip thrust exercises (CV = 12.2–21.11). Similar results were found irrespective of biological age group. Conclusions: All tests were reliable for the pooled sample as well as for the biological age groups.

Meningkatkan Hasil Belajar Menyundul Bola Dalam Permainan Sepak Bola Melalui Model Pembelajaran Pemecahan Masalah (Problem Solving) Pada Siswa Kelas VIII MTS Negeri 1 Maluku Tengah

The problem in this study is whether the learning outcomes of heading the ball in a football game can be improved through the problem solving learning model? The purpose of this study is to find out the improvement of learning outcomes of heading the ball in football games through the problem solving learning model in grade VIII students of MTS Negeri 1 Central Maluku. The subjects of the study were 18 students in grade VIII. The research instruments used in this study include; rubric assessment of attitudes, knowledge and psychomotor. The results of the study showed that the learning outcomes of the first cycle with a total score of 1214 and learning completeness reached 66.30% or there were 10 students who completed out of 18 students. Student learning outcomes in cycle II with a total score of 1441 and learning completeness reached 80.05%. There was an increase in learning outcomes of 13.75%.

Emissions from air travel and major football tournaments

ABSTRACT Research Question This paper explores the environmental impact of air travel during two international football tournaments – the Mens FIFA World Cup and UEFA European Championships – by estimating CO2 emissions from the movements of competing teams. Specifically, we consider how travel associated with major international football tournaments has evolved over time. Research Methods We access data for 895 international football matches (June 1990–July 2024). Our data focuses on the travel associated with players and management travelling to, and within, host countries and includes the movement of more than 16,000 people. Estimates of CO2 emissions per passenger (per kilometre) are used to examine the environmental impact of travelling to host countries, and competing, during the tournament. Results and Findings Our findings are the first attempt to demonstrate the CO2 emissions from team travel to and within major football tournaments. Despite improvements in aeroplane fuel efficiency, the carbon footprint from team travel has generally not been reduced. The decision to expand these tournaments, locate matches across large geographic areas, and use co-host countries has exacerbated this issue. Implications Our findings can support sustainability initiatives and could be adopted by both federations to curb CO2 emissions which appear to undermine genuine attempts to become more environmentally friendly.