Opponent Player Research Articles

Study on the impact of shoulder flexibility training on smash speed mechanics in badminton using machine learning

The smash stroke in badminton is a key attack style that makes the opponent player miss the strike; the smash requires speed, agility, strength, and precision. The smash demands a high level of shoulder flexibility from the players, which increases the Range of Motion (ROM) during the backswing and forward swing phases. The shoulder flexibility provides excellent energy storage and transfer, improving smash speed. The biomechanical efficiency of Shoulder Flexibility Training (FLT) on smash speed efficiency is still under study. This lack of study leads to modelling training program limitations, which may increase the risk of injury. Examining the process by which smash speed mechanics are impacted by Shoulder Flexibility Training (SFT) programs is the primary goal of the present investigation. It is approximately a 6-week training program for Amateur Players (AP) and National Players (NP), which uses core shoulder motions like flexion, abduction, and rotation as its basis. Motion capture systems and radar sensors investigated joint motion and smash speeds. To address the shortage of study evidence on the subject, a hybrid CNN + LSTM model was applied to predict smash speed concerning improved shoulder flexibility. As reported by the research results, students’ smash speed and shoulder flexibility improved significantly during training. There was a 4.35% boost to smash speed at contact and a 4.69% gain in shoulder internal rotation compared to non-contact athletes. Additionally, there was a 9.83% boost in smash speed at contact and a 9.76% boost in shoulder internal rotation for the best athletes. Considering post-training illnesses, the CNN + LSTM model successfully predicted smash speed, with R³ scores of 0.99 for NP and 0.97 for AP.

Sequential Decision Making in Beach Volleyball-A Mixed-Method Approach.

Which opponent player to sequentially serve to in beach volleyball is crucial given the advantage of the attacking team. The sequential choice theory was tested in three studies by analyzing allocation strategies based on the hot hand belief. Study 1 showed strong belief in the hot hand of national coaches. In Study 2, we analyzed Tokyo Olympics data to explore how base rates and sequential selection rates varied in an elite sample. When base rates of players differed by 0.25, low-performing players were frequently selected. In an experiment with elite athletes, Study 3A demonstrated accurate base-rate-difference recognition but low base-rate-change recognition. Study 3B found that the hot hand is believed to be important but is not often detected. We conclude that players and coaches follow predictions of the sequential choice theory and believe in the hot hand, but do not have a shared understanding of how to use it.

Indicators of performance of varieties of attacks of qualified teams in futsal

The results of the study of the varieties of attacks of qualified teams in futsal during the match allowed to establish that competitive activity is characterized by high speed, efficiency and intensity of tactical actions by qualified futsal players. It was found that during the match qualified futsal teams, which performed at the Ukrainian championship in the season 2023-2024, conducted from 184 to 204 attacks on the opponent's goal, with an average number of logically completed attacks 58.6% reached the opponent's goal. After analyzing the data of pedagogical observation it was found that qualified teams in futsal, most often take part in positional attacks, which make up 48.4% of the total number of attacks. The highest indicators of efficiency 64,8%, are established at carrying out fast attacks by skilled players in futsal. It was established that qualified futsal teams during the match carry out a large number of shots at the opponents' goal, of which 34.8% of shots were blocked by opponent's players, 32.6% of shots were carried out past the goal, a large number of shots 28.2% were repelled by the goalkeeper and 1.8% of shots were taken by the goal post and crossbar. It is worth emphasizing the high efficiency of the attacks, which amounted to 2.6% (attacks ended with a goal in the opponent's goal).

Persistence in repeated games encourages the evolution of spite

Social behavior is divided into four types: altruism, spite, mutualism, and selfishness. The former two are costly to the actor; therefore, from the perspective of natural selection, their existence can be regarded as mysterious. One potential setup which encourages the evolution of altruism and spite is repeated interaction. Players can behave conditionally based on their opponent's previous actions in the repeated interaction. On the one hand, the retaliatory strategy (who behaves altruistically when their opponent behaved altruistically and behaves non-altruistically when the opponent player behaved non-altruistically) is likely to evolve when players choose altruistic or selfish behavior in each round. On the other hand, the anti-retaliatory strategy (who is spiteful when the opponent was not spiteful and is not spiteful when the opponent player was spiteful) is likely to evolve when players opt for spiteful or mutualistic behavior in each round. These successful conditional behaviors can be favored by natural selection. Here, we notice that information on opponent players’ actions is not always available. When there is no such information, players cannot determine their behavior according to their opponent's action. By investigating the case of altruism, a previous study (Kurokawa, 2017, Mathematical Biosciences, 286, 94–103) found that persistent altruistic strategies, which choose the same action as the own previous action, are favored by natural selection. How, then, should a spiteful conditional strategy behave when the player does not know what their opponent did? By studying the repeated game, we find that persistent spiteful strategies, which choose the same action as the own previous action, are favored by natural selection. Altruism and spite differ concerning whether retaliatory or anti-retaliatory strategies are favored by natural selection; however, they are identical concerning whether persistent strategies are favored by natural selection.

Generalized Nash equilibrium problems with mixed-integer variables

AbstractWe consider generalized Nash equilibrium problems (GNEPs) with non-convex strategy spaces and non-convex cost functions. This general class of games includes the important case of games with mixed-integer variables for which only a few results are known in the literature. We present a new approach to characterize equilibria via a convexification technique using the Nikaido–Isoda function. To any given instance of the GNEP, we construct a set of convexified instances and show that a feasible strategy profile is an equilibrium for the original instance if and only if it is an equilibrium for any convexified instance and the convexified cost functions coincide with the initial ones. We develop this convexification approach along three dimensions: We first show that for quasi-linear models, where a convexified instance exists in which for fixed strategies of the opponent players, the cost function of every player is linear and the respective strategy space is polyhedral, the convexification reduces the GNEP to a standard (non-linear) optimization problem. Secondly, we derive two complete characterizations of those GNEPs for which the convexification leads to a jointly constrained or a jointly convex GNEP, respectively. These characterizations require new concepts related to the interplay of the convex hull operator applied to restricted subsets of feasible strategies and may be interesting on their own. Note that this characterization is also computationally relevant as jointly convex GNEPs have been extensively studied in the literature. Finally, we demonstrate the applicability of our results by presenting a numerical study regarding the computation of equilibria for three classes of GNEPs related to integral network flows and discrete market equilibria.

Team-Builder: Toward More Effective Lineup Selection in Soccer.

Lineup selection is an essential and important task in soccer matches. To win a match, coaches must consider various factors and select appropriate players for a planned formation. Computation-based tools have been proposed to help coaches on this complex task, but they are usually based on over-simplified models on player performances, do not support interactive analysis, and overlook the inputs by coaches. In this paper, we propose a method for visual analytics of soccer lineup selection by tackling two challenges: characterizing essential factors involved in generating optimal lineup, and supporting coach-driven visual analytics of lineup selection. We develop a lineup selection model that integrates such important factors, such as spatial regions of player actions and defensive interactions with opponent players. A visualization system, Team-Builder, is developed to help coaches control the process of lineup generation, explanation, and comparison through multiple coordinated views. The usefulness and effectiveness of our system are demonstrated by two case studies on a real-world soccer event dataset.

Interpersonal coordination of opposing player dyads during attacks performed in official football matches

ABSTRACT The purpose of this study was to characterise the interpersonal coordination between opponent players during offensive sequences in official matches and to verify if offensive sequences ended in shots to goal present different coordination patterns when compared than those that ended in defensive tackles. A total of 580 offensive sequences occurred during matches resulting in shots to goal (n = 172) or defensive tackles (n = 408) were analysed. The bidimensional coordinates and technical actions of male professional football players (n = 1160) were obtained using a video-based tracking system. Dyads were defined using a network analysis and composed of the nearest opponent. Interpersonal coordination of the dyads was analysed using the vector coding and the frequency for each coordination pattern was computed. In-phase was predominant for all displacement directions and offensive sequences outcomes, and antiphase was the least frequent. For lateral displacements, offensive sequences ending in shot to goal presented lower frequency for in-phase and higher frequency for offensive player phase than ended in defensive tackle. This information about the relationship of opponent players dyads during decisive moments of the matches provides fundamentals for future research and assists coaches to understand the different behaviours in successful and unsuccessful attacks.

Head injuries caused by contact with teeth during sports and exercise activities in Japanese schools during the period 2012-2018.

During sports activities, teeth-related contact can cause injury to both ally and opponent players, which can lead to potential infections and aesthetic problems. However, the extent of such injuries remains unclear. This study aimed to clarify the frequency and situation of head injuries caused by teeth (HICBT) occurring under the supervision of schools in Japan. HICBT records were extracted from the Japan Sport Council data on head injuries occurring reported during the 7-year period from 2012 to 2018 under the supervision of schools in Japan. Of the total 463527 head injury cases during the study period, 4495 cases (approximately 1%) were HICBT. Of the HICBT cases, 3650 (81.20%) were related to sports and athletic activity. Such injuries were reported to occur most often during basketball with a rate of 57.07 and 50.43%; soccer/futsal was the next most common sport with a rate of 13.38 and 24.01% in junior high school and high school students. Tag games were responsible for a similar number of HICBT cases at 22.73 and 39.03% in kindergartens and elementary school students. A total of 4495 cases of HICBT were identified, accounting for about 1% of all head injuries under the supervision of schools in Japan during the study period. This result reminds us that our teeth could be the weapon against the around players during sports events. HICBTs occurring during basketball and soccer/futsal, in which mouthguards are not mandatory, were conspicuous among junior and senior high school students. Active use of mouthguards in various sports will protect players as well as their teammates and opponents. Sports dentists should encourage the revision of rules, such as mandating the use of mouthguards, in popular sports with a high incidence of HICBT, such as basketball and soccer/futsal.

Chaos-based optimal path planning of humanoid robot using hybridized regression-gravity search algorithm in static and dynamic terrains

The present work deals with the navigational analysis of humanoids in complex terrains by tuning the classical approach with reactive techniques. Here, the linear regression (LR)-based classical approach is merged with the gravitational search algorithm (GSA), called RGSA, and Chaos is added to achieve an optimum path. To improve upon the local traps, Chaos is introduced into the basic structure of the RGSA model to attain a global solution without effecting the higher convergence rate of the RGSA model. The Chaos further adds ergodicity to the dynamical system, gaining an optimal path length in the shortest time possible. The use of the proposed hybridization technique is found to be effective as compared to its counterparts. Various chaotic maps like the logistic map, Gauss map, piecewise linear chaotic map, and sinusoidal maps are used, and the results are compared. Also, the smoothness of the path is ensured during trajectory planning. The analysis is done in real-time lab conditions and simulation environments using single and multiple humanoids (Nao robots) with static and dynamic obstacles within the search space. The simulation for the path planning is done using the Webot software, while the choregraphe software is used for experimental path planning. The simulation and experimental work presented in the current paper shows good agreement and are within 6% acceptable limits. The proposed controller is then compared with a vision-based approach and another parallel sensor-based approach for optimum operational cost and smoother trajectory. The current work is a novel approach in which the humanoid’s interaction with the mobile robot is also analyzed. The proposed approach successfully avoided the dynamic obstacle in the form of the KHEPERA-II mobile robot. This concept can find potential applications in soccer scenarios employing mobile robots as opponent players to the Nao robots. Further, because of the lower operational cost, the proposed methodology can also be applied to other areas, such as multitasking, cooperative scheduling, power distribution systems, etc.

The effect of some vacuum exercises and biomotor abilities to development of physical fitness of basketball among the players of Baghdad Education Al-Karkh third team

The basketball game is one of the activities of the group games, which have been dealt with by many studies and researches to obtain the best achievement. The importance of the research lies in how to introduce vacuum exercises and develop biokinetic abilities and capacities by means of modern scientific training. The current research aims to identify the relationship between some vacuum exercises and biokinetic capabilities with the ability to develop various elements of physical and skillful fitness such as deception and overtaking the opponent player, since most of the research is looking specifically for a specific physical ability or skill only without paying attention to motor performance in general in terms of continuing to maintain outstanding good performance and stamina throughout the match. Thus, this research imposed a statistically significant correlation between vacuum exercises and biokinetic abilities in terms of the possibility of developing elements of physical fitness that may not be at a good level for this sample in particular, and the possibility of endurance and maintaining the level of performance throughout the match period in the game of basketball at a good level. The researchers used the experimental method. As for the research sample, the Baghdad Al-Karkh breeding team / 3 basketball players were (12) players, and the researchers conducted tests for some biokinetic abilities and vacuum exercises, and the researchers used the program (spss) to treat the statistical data. The researchers concluded that there are correlations between some vacuum exercises and biokinetic abilities, and between the physical fitness of female basketball players. Vacuum exercises have a significant impact on basketball players in terms of increasing the lung capacity and strengthening the abdominal muscles. Biomotor abilities have a positive effect on the level of performance. The researchers recommend the necessity of applying these tests in studying the relationship with another type and with other age groups.

The Effect of Wearing Soccer Headgear on the Head Response in Soccer Heading

Soccer is regarded as the most popular sport in the world, with millions of people actively involved in the game. Being a contact sport in nature, soccer players are susceptible to various kinds of injuries, such as lower extremities muscle injury. In addition to those familiar injuries that soccer players sustain during the game, traumatic brain injury is also a possibility. Head impacts in soccer could be a result of head-to-head impact with an opponent player, a head-to-elbow impact, an impact with the goal post, an impact with the ground, as well as an impact with the soccer ball, which occurs during a heading manoeuvre. Soccer allows the players to use their heads to hit the ball to pass it to a teammate or even perform heading to score a goal. Although soccer heading is perceived as less harmful as compared to head impacts with other hard objects, many studies have shown compelling evidence that this repetitive heading might harm the brain, thereby leading to traumatic brain injury. Protective headgears designed especially for soccer players have been commercially available in the market for some years. However, the effectiveness of these headgears in reducing the impact due to soccer heading has not been well studied. This paper investigates the effectiveness of two commercially available headgears, the Full90 and the ForceField headgear by means of a heading experiment. An anthropometric test device known as Hybrid III head and neck dummy instrumented with an inertial sensor that consists of a triaxial accelerometer and gyroscope installed at the centre of gravity of the head was used in the experiment. A soccer ball launching machine was used to propel the ball at several inbound velocities. Peak linear acceleration (PLA) and peak angular acceleration (PRA) were recorded, and the head injury criterion (HIC) and the rotational injury criterion (RIC) were calculated. It was found that both headgears failed to reduce the linear components of head acceleration but instead increased the HIC (13 – 66% increment) depending on the inbound ball velocity. With respect to the rotational component of head injury, the Full90 headgear was found to reduce the RIC up to 29%, but the ForceField failed to provide a significant reduction of RIC. Overall, both headgears were found to be ineffective in reducing linear and rotational components of head injury, which could be attributed to the headgear design. Improved headgear design and an improved padded foam are needed to protect soccer player’s brain while performing soccer heading.

Wearable and Flexible Multifunctional Sensor Based on Laser-Induced Graphene for the Sports Monitoring System.

The conversion of diverse polymeric substrates into laser-induced graphene (LIG) has recently emerged as a single-step method for the fabrication of patterned graphene-based wearable electronics with a wide range of applications in sensing, actuation, and energy storage. Laser-induced pyrolysis technology has many advantages over traditional graphene design: eco-friendly, designable patterning, roll-to-roll production, and controllable morphology. In this work, we designed wearable and flexible graphene-based strain and pressure sensors by laminating LIG from a commercial polyimide (PI) film. The as-prepared LIG was transferred onto a thin polydimethylsiloxane (PDMS) sheet, interwoven inside an elastic cotton sports fabric with the fabric glue as a wearable sensor. The single LIG/PDMS layer acts as a strain sensor, and a two-layer perpendicular stacking of LIG/PDMS (x and y laser-directed films) is designed for pressure sensing. This newly designed graphene textile (IGT) sensor performs four functions in volleyball sportswear, including volleyball reception detection, finger touch foul detection during blocking the ball from an opponent player, spike force measurements, and player position monitoring. An inexpensive sensor assists athletes in training and helps the coach formulate competition strategies.

Video analysis of 100 matches in male semi-professional football reveals a heading rate of 5.7 headings per field player and match

IntroductionHeading is an integral part of football and frequent media reports and previous studies about potential danger of heading and head trauma in football fuelled discussions. Epidemiological data and video analyses regarding headings situation and associated head injuries are still missing in male adult professional football.MethodsIn a prospective cohort study in the male fourth German football league, 100 official matches of the 2015–2016 season were assessed by video analysis and a standardized protocol. Heading situations and concomitant circumstances as well as incidents with a propensity of injury (critical incidents) were analyzed. Critical incidents (CI) and seasonal reported head injuries were cross-referenced.ResultsOverall, 11,514 headings were analysed in detail. Video analysis yielded a mean of 5.7 headings per player and match (SD: 1.2; range 0–15). Heading was predominantly performed with the frontal part of the head (76.8%), and nearly two thirds of all headings occurred during defending (65.8%). 71.0% of all headings occured during tacklings, of which 71.9% involved body contact with the opponent player. Video analysis yielded 31 CI on the head due to heading (incidence: 1.02 per 1000 h match exposure and player). 29 CI occurred during heading duels (odds ratio: 5.91), 30 CI with body contact (odds ratio: 28.8) and 6 CI with elbow contact (odds ratio: 6.13).ConclusionHeading frequency in male semi-professional football could be determined with a rate of 5.7 headings per match and field player. Cross referencing CI and seasonal reported head injuries revealed a very low number of reported head injuries.

The effect of foam padding on the head response in soccer heading

Background: Soccer is regarded as the most popular sports in the world, with millions of people are actively involved in the game. Being a contact sports in nature, soccer players are susceptible to various kinds of injuries such as lower extremities muscle injury. In addition to those familiar injuries that soccer players sustain during the game, traumatic brain injury is also a possibility. Head impacts in soccer could be a result of head-to-head impact with an opponent player, head-to-elbow impact, an impact with the goal post, impact with the ground, as well as an impact with the soccer ball, which occurs during a heading manoeuvre. Soccer allows the players to use their head to hit the ball to pass it to a teammate, or even perform heading to score goal. Although soccer heading is perceived as less harmful as compared to head impacts with other hard objects, many studies have shown compelling evidence that this repetitive heading might harm the brain, thereby leading to traumatic brain injury. Protective headgears designed, especially for soccer players have been commercially available in the market for some years. Objective: This article investigates the effectiveness of two padding foams by means of heading experiment. Methodology: An anthropometric test device known as Hybrid III head and neck dummy instrumented with an inertial sensor that consists of a triaxial accelerometer and gyroscope installed at the centre of gravity of the head was used in the experiment. A soccer ball launching machine was used to propel the ball at several inbound velocities. Peak linear acceleration and peak rotational acceleration (PRA) were recorded, and the head injury criterion (HIC) and the rotational injury criterion (RIC) were calculated. Results: Poron X-ray diffraction (XRD) foam was found to provide the best protection in both linear and rotational components. However, for protection against HIC, it is evident from the findings that both foams were very effective at lower inbound ball velocity and became drastically ineffective as the inbound velocity increases up to 22 m/s (i.e. equal to 79.2 km/h). This could be attributed to the foam being completely compressed by the high-velocity ball impacting it. The same situation is seen for RIC, however with less significant decline in protective performance. Conclusion: Overall, it can be concluded that the Poron XRD foam could be a better foam to be used in soccer headgear as compared to the yoga mat foam.

Evolution of trustfulness in the case where resources for cooperation are sometimes absent

It is worth investigating the existence of cooperation, which is costly for the actor but beneficial to the recipient (precisely because it is costly for the former). If players, when they approach defectors, stop their relationship with them, cooperation can pay off and favorably emerge in the course of evolutionary dynamics. The present study examines the situation in which animals, even when they want to cooperate, sometimes lack the necessary resources, and are thereby prevented from cooperating with others. In addition, it is also considered that the underlying information about the presence or absence of these resources can be conveyed to the opponent player. Here, the opponent who defects—has no resources for cooperation—may be a cooperator or a defector. Therefore, it is not clear which behavior is more likely to evolve, if it is keeping the interaction with such an opponent (i.e., being trustful) or stopping the interaction with such an opponent (i.e., being not trustful). By using evolutionary game theory, it is revealed that those who want to keep the interaction with those without the resources to cooperate are favored by natural selection. This study sheds new light on the role of keeping and stopping interaction in the evolution of cooperation under variable availability of resources.

Correlation of Upper Limb Explosive Power with Smash Velocity and Performance in Badminton Players: A Cross-sectional Study

Introduction: Badminton is a popular Olympic game played in different age groups with different levels of skills. Various techniques of strokes are used by the players. Smashing is one of the offending and powerful stroke techniques used in badminton to defeat the opponent player. Various components of fitness like speed, agility, flexibility, endurance, and power plays an important role in an athlete’s performance and Upper limb explosive power is one such component that is utilized for a better stroke performance. Aim: To find the correlation of upper limb explosive power with smash velocity and performance in badminton players. Materials and Methods: This cross-sectional study including a total of 100 participants by convenient sampling was conducted in Manav Rachna International University, Faridabad, Haryana, India, from September 2017 to March 2019. Out of 100 players, only 85 participants (60 male and 25 female) completed the study. The participants were assessed for Upper Limb Explosive Power (ULEP), Smash Velocity and accuracy. Data analysis was performed using the Karl Pearson’s correlation coefficient (p-value≤0.05). Results: Significant positive correlation was obtained for ULEP with smash velocity and of accuracy with smash velocity with a value of r-value=0.0414 and r-value=0.468 respectively. Conclusion: The smash velocity of badminton players is related to upper limb explosive power and accuracy.

The influence of the futsal outfield goalkeeper on players' running performance

PurposeThis study aimed to investigate the influence of the outfield goalkeeper game situation on the running performance of teammates and opponent players during professional futsal matches.MethodsThe movement trajectories of 126 professional players during 6 official matches were analysed with a videobased tracking system (30 Hz). Distance covered and percentage of distance covered in different speed ranges were calculated to identify differences per team and per sub-phase of the game (traditional vs. outfield goalkeeper situation).ResultsThe teammates of the outfield goalkeeper spent a higher percentage of the distance covered in the standing and walking speed range (36.27 ± 15.38%) compared with the teammates of the traditional goalkeeper (31.44 ± 7.74%). The outfield goalkeeper spent a smaller percentage of the distance covered in the standing and walking range (41.13 ± 10.86% vs. 80.77 ± 4.30%) and a higher percentage in the low- and medium-intensity running range (31.59 ± 5.59% vs. 15.07 ± 2.74% and 14.33 ± 3.90% vs. 2.50 ± 1.19%, respectively), as well as covered a greater distance (77.41 ± 16.00 m/min) than the traditional goalkeeper (33.81 ± 3.66 m/min).ConclusionsThese findings provide coaches with a background concerning the requirements during the outfield goalkeeper situation as guidelines for final exercises in training sessions.

Ultrasound-driven Curveball in Table Tennis

Augmented Human (AH) is a research field enhancing human physical abilities or supporting human activity using advanced technologies. As one of the AH approaches, previous studies have attached an actuator to a human body or tools used for an activity. The attached actuators are used to control their movements to support an activity. In this study, instead of attaching actuators, we propose to directly apply noncontact ultrasound force to a lightweight tool to manipulate it. The advantage of using noncontact force is that users do not need to wear a specific device and to process tools used for the activity. As a proof-of-concept system, we developed an ultrasound-based curveball system by which table tennis players can shoot a curveball regardless of their physical ability. In the system, a moving ping-pong ball (PPB) is a target tool for remote manipulation. The system curves the trajectory of a moving PPB by continuously focusing ultrasound on it. Users can control the curve timing and the curve direction (left or right) using a racket-shaped controller. In the user study, we conducted an actual table tennis match using the curveball system and qualitatively confirmed that the player using the system had the upper hand. Another user study using a ball dispenser quantitatively showed that the ultrasound-driven curveball increased the number of mistakes of the opponent player 2.95 times. These results indicate that the proposed concept is feasible.

The Influence of Environmental Constraints in 360° Videos on Decision Making in Soccer.

Decision making is an important prerequisite of soccer expertise. Beyond expertise, considering the effects of environmental constraints on decision-making processes could help specify existing theories. To address this gap, expert and nonexpert soccer players were enrolled to test how environmental constraints affect decision-making processes. Environmental constraints were experimentally manipulated: Opponent pressure was implemented by presenting a close opponent player in soccer scenes, time constraint was implemented by providing short time intervals for making the decision, and first-person perspective was implemented by using 360° videos. The experts outperformed the nonexperts, and the results showed significant main effects of time constraint and opponent pressure, but not perspective. The players' option and decision quality improved under the time constraint but were negatively affected by opponent pressure. The negative effects of opponent pressure were especially true under limited time and in third-person perspective. The results, alternative manipulations, and implications of environmental effects are discussed for decision-making research.

The right temporoparietal junction during a cooperation dilemma: An rTMS study

Cooperation enhances interpersonal communication and nurtures society. However, efforts to socially cooperate may often evoke conflict. Individuals may selfishly pursue a greater reward or success by exploiting the efforts of other individuals or taking unnecessary risk to oneself. Such a cooperation dilemma is highly prevalent in real life; thus, it has been studied in various disciplines. Although published functional magnetic resonance imaging studies have shown the involvement of the right temporoparietal junction (TPJ) in resolving a dilemma through cooperation, a causal relationship between the two has rarely been explored. Hence, we investigated this issue by combining repetitive transcranial magnetic stimulation with a priority game task (modified snowdrift game). In this game task, participants and opponent players jointly faced a problem whereby their collaboration was anticipated to defuse the situation. This conflicted with a choice in the participant's self-interest that was more rewarding but risky. We further included conditions with and without explicit social cues using figures describing elderly/pregnant passengers in the game opponent's car, and measured participants' prosocial traits to examine any cue-induced effect as well as the personality-cooperation relationship, respectively. The cooperation ratio was not statistically different in both the no-cue and with-cue conditions between the sham stimulation and inhibitory continuous theta burst stimulation (cTBS). However, after cTBS, in the no-cue condition, the strength of the association between cooperation ratio and empathy traits decreased significantly. These results add to our knowledge about the right TPJ's role in social cognition, which may be extraordinarily complex. This topic is deserving of further examination.