Kicking Accuracy Research Articles

The influence of a coordination training model that uses various manipulative movements on futsal kick accuracy

Achieving precise kick accuracy and coordinated movements in futsal was essential for competitive success. This study aimed to evaluate the differences between various futsal training approaches that incorporated distinct coordination exercises involving manipulative movements, specifically assessing their impact on kick accuracy. A quasi-experimental design with a control group was employed, focusing on shooting skills within the futsal context. The population consisted of 70 members from the Universitas Muhammadiyah Kalimantan Timur (UMKT) futsal team, from which 40 players were purposively selected based on their participation duration of over six months and their tier status within the university's core teams. Participants were divided into two groups: one received static coordination training (control group), and the other underwent dynamic coordination training (experimental group), each comprising 20 players. The intervention spanned 18 sessions, including pre- and post-tests. Data were collected through a modified shooting kick test at the futsal goal, utilizing a point distribution system. Analysis revealed significant differences in kick performance between the two training methods, with dynamic coordination training yielding superior results (t-count = 3.010 t-table = 2.024). These findings indicated that dynamic coordination exercises were more effective than static ones in enhancing futsal kick accuracy. Future research should have considered expanding the population and sample size to include amateur players, introducing additional variables and diverse training methodologies, extending training duration and frequency, conducting long-term evaluations, measuring shooting technique quality, and employing quantitative research methods. By addressing these suggestions, subsequent studies could contribute more comprehensively to the understanding of effective training strategies in futsal.

Analysis of the impact of different intensities and time periods on the physical and technical performance of professional soccer players

Soccer match simulations provide valuable information on player performance and training methods but how intensity during a game affects a player's physical/technical performance has yet to be explored. The objective of the study was to analyse the impact of variable intensity intervals during the first block of the Copenhagen Soccer Test. A repeated measures study was designed to compare three intensity levels, three time periods and their effects on sprint speed, perceived effort, goal shooting accuracy, dribbling, and long pass accuracy in professional soccer players. The comparison analysis between different phases showed a significant decrease in sprint speed (p < 0.001) and an increase in perceived effort (p < 0.001), however, the technical variables did not change (p > 0.05). When comparing the data based on intensity, significant decreases were observed in all variables (p < 0.001). The combined analysis of the results indicates that the speed decreases and the rate of perceived exertion increases as the simulation progresses. Meanwhile, the accuracy of goal kicks, dribbling, and long passes are negatively affected by high-intensity efforts, but demonstrate recovery over the course of the simulation. The increase in intensity affects the speed more than the accuracy of shots on goal, dribbling and passing. Keywords: Performance, Soccer, Intensity, Physical performance, Technical performance.

Acute effects of prismatic adaptation on penalty kick accuracy and postural control in young soccer players: A pilot study

BackgroundPrismatic adaptation (PA) is a visuomotor technique using prismatic glasses that are capable of moving the visual field and to affect the excitability of certain brain areas. The aim of this pilot study was to explore potential acute effects of PA on penalty kick accuracy and postural control in youth soccer players. MethodsIn this randomized crossover study, seven young male soccer players performed three PA sessions (rightward PA, r-PA; leftward PA, l-PA; sham PA, s-PA) with a washout period of 1-week between them. Immediately before and after each PA session, penalty kick accuracy and postural control were assessed. ResultsWe detected an increase in penalty kick accuracy following PA, regardless of the deviation side of the prismatic glasses (F1,5 = 52.15; p = 0.08; ηp2 = 0.981). In detail, our results showed an increase in the penalty kick accuracy toward the right target of the football goal following r-PA and toward the left target of the football goal following l-PA. We detected a significant effect on the sway path length (F2,12 = 10.42; p = 0.002; ηp2 = 0.635) and the sway average speed (F2,12 = 9.17; p = 0.004; ηp2 = 0.605) parameters in the stabilometric test with open eyes following PA, regardless of the deviation side of the prismatic glasses. In detail, our results showed a significant difference in both the stabilometric parameters (p = 0.016 and p = 0.009, respectively) only following l-PA. ConclusionThe findings of this pilot study indicate that PA could positively affect penalty kick accuracy and postural control suggesting that PA could be used as a visual training technique in athletes.

Relationships between physical fitness characteristics, technical skill attributes, and sports injury in female Australian football players.

To explore the relationships between physical fitness and i) technical skills and ii) time-loss from Australian football injury in female players across the talent and participation pathways. This study uses a subset of data from two cross-sectional and one prospective cohort studies. A total of 223 female Australian football players across five competition levels (elite/non-elite senior, high-level junior, and non-elite junior (14-17 years)/(10-13 years)) were included in this study. Comprehensive physical fitness assessments and modified Australian football kicking and handballing tests were conducted in the 2018/19 pre-seasons. During the respective competitive in-season, time-loss injuries were recorded by team personnel. Stepwise multiple linear regressions were performed to determine the relationship between physical fitness and kicking and handballing scores. Cox proportional regressions were conducted to identify physical fitness factors associated with injury. Increased running vertical jump height, greater hip abduction strength, and faster timed 6 m hop speed demonstrated a relationship with kicking accuracy when adjusted for years of Australian football playing experience (adjusted R2 = 0.522, p < 0.001). Faster agility time and increased lean mass were associated with better handballing accuracy (adjusted R2 = 0.221, p < 0.001). Multivariate Cox regression revealed an increased risk for sustaining a time-loss injury in less agile players (adjusted HR 2.41, 95% CI 1.23, 4.73, p = 0.010). However, this relationship no longer remained when adjusted for age and years of Australian football experience (adjusted HR 1.68, 95% CI 0.81, 3.50, p = 0.166). Physical fitness may be a significant factor contributing to development of Australian football technical skills in female players. However, its role is unclear in protecting against injury risk in this athlete population. Further research is needed to explore the multifactorial and complex phenomenon of talent development and injury risk reduction in female Australian football players.

Multiplanar lumbar, pelvis and kick leg sequencing during soccer instep kicking from different approach angles

Multiplanar kinematic and kinetic sequencing from different approach angles can highlight how soccer players perform fast and accurate kicks. This study therefore aimed to a) determine multiplanar torso, pelvis and kick leg sequencing during instep kicks and b) highlight the effect of different approach angles on these sequencing patterns. Twenty male soccer players (mass 77.9 ± 6.5 kg, height 1.71 ± 0.09 m, age 23.2 ± 3.7 years) performed kicks from self-selected (∼30−45°), straight (0°) and wide (67.5°) approaches and multiplanar lumbo-pelvic, hip and knee angular velocities, moments and powers were derived from 3D motion analysis. The results suggest tension arc release between the upper and lower body functions as a two-stage mechanism. The first phase of arc release was characterised by increases in concentric hip flexion and transverse lumbo-pelvic velocities towards the ball. The second phase was characterised by increasing concentric lumbo-pelvic flexion and knee extension work to angularly accelerate the kicking knee towards foot-to-ball contact. Further, alterations in kinematic and kinetic sequencing helped maintain performance (ball and foot velocities at ball contact) and accuracy at approach angles other than self-selected. These findings can help coaches and practitioners design effective training practices.

Механізми вдосконалення спеціальної ударної підготовки спортсменів у змішаних єдиноборствах у передзмагальних мезоциклах

The Purpose of the Research is to study the mechanisms for improving the male and female athletes` special strike training for mixed martial arts at the pre-competition mesocycles under the conditions of different strength training programs. Methods of the Research. 44 athletes who were divided into 4 groups took part in the study. The representatives of the examined group used strength training loads of different structure and direction. Using the method of control testing of special strike training, the number of accurate kicks for 30 s to a moving and non-moving manikin was determined among male and female athletes. The Research Results. It was found that the greatest increasing the indicator of special strike training by 103,7 % (р&lt;0,002) was recorded during the performance of the strike with a turn for the target exercise. The smallest positive dynamics by 78,7 % (р&lt;0,002) was found for athletes of B group during a side kick for the target exercise. During the exercise of number of accurate kicks for 30 s to a moving manikin it was found that the controlled indicator for male athletes of B group was 67,6 % lower compared to the results of A group. Comparison of the control results of the female athletes of C and D groups has demonstrated that at the end of the pre- competitive mesocycle, the difference between the indicator of female athletes` accurate number of kicks for 30 s to a moving manikin was 20,7 %, and at the beginning of the research, this difference was 43,6 %. At the end of the pre- competition mesocycle, the difference between the parameters of the indicator the number of accurate kicks for 30 s to a none-moving manikin by the athletes of C and D groups was 7,9 %, when at the beginning of the research this difference was 56,6 %. Findings. It was determined that under the conditions of using isolated exercises during strength training, which make it possible to maximally and simultaneously selectively load individual muscle groups, the stress of adaptation and compensatory mechanisms increases, which leads to arising the indicators of special strike MMA training.

The Effect of Using Pencak Silat Front Kick Precision Modifications on The Level of Confidence in SMP Negeri 2 Surabaya

Pencak silat is a subject that is rarely carried out in schools, because of the lack of educators who know about pencak silat and pencak silat is a sport that is quite dangerous so if it is carried out in schools there must be strict guard against students and interesting innovations in implementation of pencak silat learning. This study aims to determine the influence and how much influence the use of modified pencak silat front kick accuracy aids on students' confidence levels. This study used a quantitative descriptive approach with the PreExperimental method, Design One Group Pretest-posttest. The instrument used in the study was the Self-Confidence Questionnaire consisting of 40 indicators. This research was conducted in class VII-J which amounted to 30 students. The results of an increase in the Self-Confidence Questionnaire by 74.43% in the high category. The conclusion of the influence of student confidence in pencak silat learning using modifications to the pencak silat front kick determination tool can be seen from the results of the pre-posttest with calculation results of an increase after the provision of pencak silat learning using front kick aids with the results of an increase in self-confidence questionnaire of 67.00.

Quality Control of Cement Bags Using Pareto Diagrams and Analytical Hierarchy Process (AHP)

A cement company in Bengkulu which has been operating and producing premium quality cement since April 2015 is experiencing quality product issues, particularly regarding its cement bags. Raw material was the largest defect contributor, accounting for 65% of the total defective bags with the causing criteria were raw materials that did not meet specifications, no hole at the end of the valve, bags with poor adhesive strength, oversized bags, oversized pores of the bags, and the valve holes were too tight. Other defect contributor was related to machinery factor that contributed to 30% of the total defective bags with the causing criteria were conveyor belt sway, spout kick accuracy issue, poor guide plate accuracy, and loading machine with brake issues. Another defect contributor was related to human factor, that contributed to 5% of the total number of defects caused by human error such as lack of focus and fatigue. Pareto diagram was one of the seven tools in quality control. Pareto chart was a special type of bar chart where, each bar represented a different category or part of a problem. The sample used in this study was the number of defective cement bags (40 kg and 50 kg of cement bags) for the period of January-December 2019.

Pengaruh Latihan Menggunakan Target Gawang dan Ban Motor terhadap Akurasi Tendangan Penalti Siswa SSB Perwira Timur Purbalingga

A penalty kick is a great opportunity to score a goal in football game if taken accurately. Penalty kick accuracy training can be done with this target practice. This study aims to determine the effect of target goal training and motorcycle tires on the accuracy of penalty kicks.The method used is a quantitative experimental method. The sample of this study was 20 students of Football School Association Perwira Timur Purbalingga who were divided into two experimental groups using the A-B-B-A pattern.Based on the research, the average pre-test of experimental groups 1 was 13.40, post test 20,20, the difference in the mean was 6,80 with tcount = 11,129 ≥ ttable = 2,262. The average pre-test of experimental groups 2 was 13.30, post test 18,60, the difference in the mean was 5,30 with tcount = 6,380 ≥ ttable = 2,262 with a level of = 0.05 then ?? was rejected and ?? was accepted.The conclusion of this study is that there is a significant effect of practicing penalty kick accuracy using goal targets and motorcycle tires on the accuracy of penalty kicks. Training using goal targets has a high effectiveness in increasing the accuracy of penalty kicks compared to training using motorcycle tires targets

Natural Language Processing Increases Accuracy of Kick, Lost-Circulation Detection

_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 206340, “Natural Language Processing Applied to Reduction of False and Missed Alarms in Kick and Lost-Circulation Detection,” by Michael Yi, Pradeepkumar Ashok, SPE, and Dawson Ramos, Intellicess, et al. The paper has not been peer reviewed. _ Kick and lost-circulation events are major contributors to nonproductive time. In the absence of good flow-in and flow-out sensors, pit-volume trends offer the best possibility for influx and loss detection, but errors occur because external mud addition and removal to the pits is not monitored or sensed. In the complete paper, the authors introduce a method that uses a Bayesian network to aggregate trends detected in time-series data with events identified by natural language processing of driller memos, thereby improving significantly the accuracy and robustness of kick and lost-circulation detection. Methodology The objective of this project was to develop a model to detect and quantify kick and lost-circulation events using readily available real-time surface signals. This model used drilling memos to supplement real-time surface signals. Fig. 1 shows the general work flow to create a lost-circulation- and kick-detection model using drilling-memo comments and Bayesian networks. Consumption of Drilling Memos. While real-time channels provide insight into potential kick and lost-circulation events, drilling memos provide additional details regarding events that could affect these real-time channels. By consuming the drilling memos and providing the rig a relationship and direct communication with the kick and lost-circulation models, the algorithm can use both surface channels and textual information from the memos to identify such events. Note that these drilling memos are also consumed in real-time. The drilling-memo data used included two channels, Date/Time and Drilling Memo. In total, 494,726 drilling memos from 271 wells were used. The data set first needed to be labeled into memo types. Given the size and many varieties of the drilling memos, a semisupervised method was used to develop a classifier to categorize the drilling memos. First, the memos were preprocessed to improve the model’s ability to cluster similar memos. This involved the following changes: - Conversion of similar words to assist with clustering - Removal of special characters - Removal of numbers - Removal of punctuation - Stemming (the process of reducing inflected or derived words to the base form) - Removal of stop words - Removal of extra white space and tabs - Lower-casing of all words The data was then clustered using a K-means clustering algorithm with 100 clusters. Many clusters were selected in order to create a large number of differentiating groups because of the variety of drilling memos provided in the data. Once clusters were generated, each cluster was grouped into classified memo types, which, in turn, provided labels for the drilling memos that fell into each cluster. For the memo data set, the 100 clusters were categorized into 34 different memo types. Drilling memos that contained text indicating they should be categorized into a certain memo type were processed separately through custom scripts.

Technology Focus: Wellbore Tubulars (July 2023)

Corrosion is a pervasive issue that affects oil and gas production. It poses a significant threat to the safety and integrity of oil and gas equipment, and it can lead to costly repairs and downtime. Mitigating corrosion is a crucial part of maintaining the productivity and safety of oil and gas operations. The first paper in the Wellbore Tubulars Technology Focus feature, IPTC 21818, explores the prevalence of corrosion in the oil and gas industry and the strategies used to mitigate its effect, including use of alternative materials and their qualification. The second paper in the feature, SPE 206340, deals with stuck-pipe incidents, a major cause of economic losses, safety hazards, and nonproductive time. With the use of artificial intelligence (AI) and machine learning (ML) techniques, however, these incidents can be prevented by analyzing drilling data. In recent research presented at the International Petroleum Technology Conference and other SPE conferences, various AI and ML models were developed to predict and prevent pipe-sticking symptoms. The authors of the paper used natural language processing applied to drilling memos to improve the accuracy and robustness of kick and lost-circulation detection. Finally, paper OTC 31160 discusses the use of microelectromechanical systems technology to embed sensors in tubulars that measure temperature and pressure throughout a well’s life. With low power consumption and an adapted transmission technology, this technology can be used to access previously inaccessible well areas in real time. Such technological strides in wellbore tubulars are revolutionizing the oil and gas industry by providing real-time data and making new areas of wells accessible. With the integration of intelligent pipe technology, nonmetallic casing strings, and powered wired drillpipe solutions, operators can better monitor their wells, adjust production parameters, and ensure the safety of their installations. These advancements are a significant step forward for the industry and are sure to have a positive effect on well integrity and safety for years to come. Recommended additional reading at OnePetro: www.onepetro.org. SPE 202498 No Pipe Body Downgrades—Improved Corrosion Mitigation Coating System Provides Significant Operator Savings by Buck Johnson, Chevron, et al. SPE 205468 The Environmental Benefits of Repurposing Tubular Steel From North Sea Oil and Gas Fields by Rob William John Holdway, Giraffe Innovation, et al. IPTC 21455 Performance Improvement of Wells Augmented Stuck-Pipe Indicator by Model Evaluations by Meor M. Meor Hashim, Petronas, et al. IPTC 22660 First Successful Deployment of Nonmetallic Casing Strings: A Case History by Fauzia Waluyo, Saudi Aramco, et al.

THE EFFECT OF POWER, BALANCE AND COORDINATION ON DROPKICK CONVERSION KICKING SKILLS ON RUGBY 7'S WOMEN ATHLETES DKI JAKARTA

This study aims to determine the effect of power, balance and coordination on the accuracy of dropkick conversion in female DKI Jakarta rugby athletes. Population is all members of UNJ rugby and Banteng rugby club. The measurement of the accuracy of the dropkick kick uses a drop kick rum kick test, the power variable uses the Vertical Jump test, the balance variable uses the Bosuball Balance Single Leg test. In coordination component, the researcher modified the Sridadi test instrument to be a drop up in test. The analysis technique uses a path analysis approach at a significance level of 0.05. The conclusion of each research finding shows (1) There is a direct influence between each independent variable: power (X1), Balance (X2), and Coordination (X3), (2) There is a direct effect of each independent variable {Power (X1), Balance (X2), and Coordination (X3) have a direct effect on the dropkick conversion kick (Y)}, (3) There is an Indirect Effect of Power (X1) through coordination (X3) of the dropkick conversion kick (Y). There is an indirect effect of balance (X2) through Coordination (X3) on the dropkick conversion (Y). Thus, kick dropkick conversion can be increased through increased power, balance and coordination.

The effect of a goalkeeper's quiet eye training and without goalkeeper training against the accuracy of kicks on goal

Based on the facts on the ground, one of the causes of the less-than-optimal achievements achieved is caused by the lack of accuracy of the player's kick to the opponent's goal. This study aims to analyze the differences in the effect of training using the goalkeeper's quiet eye and training using the quiet eye without the goalkeeper on the accuracy of kicks on the goal. This research is quantitative research with quasi-experimental methodsThis research was conducted at the Tuanku Tambusai stadium, the population of PSBS Kampar, Riau Province, with a sample of 28 soccer players obtained using purposive sampling. The research instrument used to measure the accuracy of kicks to goal in this study is Loughborough Soccer Shooting (LSST). The data analysis technique used the T-test at a significance level (α) 0.05. The study showed a significant difference between the goalkeeper's quiet eye training method and the quiet eye without the goalkeeper on shooting accuracy in PSBS Kampar. The T-test results the experimental group obtained a T count = 4.224 &gt; T table = 2.021 and a sig. (2-tailed) = 0.000 &lt; 0.05, that the training quiet eye increases the accuracy of shooting results.

Determinant Football Elements for Euro16 Match Results

Purpose: The current article aimed to verify patterns that could explain match results of the Euro Cup 2016, using as references the following match performance indicators: finishing, ball possession, passing, crosses and defensive actions. Methodology/approach: The necessary information about the matches was collected from the Dailymail’s website. The Weka (Waikato Environment for Knowledge Analysis) program was adopted to help in the analyses of these data. Originality/Relevance: Football matches components have been analysed in order to understand the behavior of the teams in the competitive scenario of this sport. Key findings: The results show that the more accurate shots a national squad takes in their games, the more chances they got to win, instead of using a game plan based on crossing movements. Ball possession, on its turn, can be a good indicator or a bad one to win matches, when associated to a high number of crosses. Moreover, the alternative of long passes seems to be relevant only when the opponent makes more shots from outside the area or get more blocked shots. Complementarily, defensive actions focused on successful tackles and more interceptions appear as a positive aspect for getting the triumph, considering only the total number of tackles. The accuracy of kicks and defensive actions were relevant to the success of the teams in the competition, suggesting that the improvement of actions related to these two indicators should help national teams to improve their own strengths, in order to maximize their chances of winning matches. Theoretical/methodological contributions: Collecting a large volume of football data from a website and using the Weka program have helped not only to speed up and facilitate the analyses but also should have been important in order not to lose any relation that could be relevant inside the studied scenario.

Determinant Football Elements for Euro16 Match Results

Purpose: The current article aimed to verify patterns that could explain match results of the Euro Cup 2016, using as references the following match performance indicators: finishing, ball possession, passing, crosses and defensive actions. Methodology/approach: The necessary information about the matches was collected from the Dailymail’s website. The Weka (Waikato Environment for Knowledge Analysis) program was adopted to help in the analyses of these data. Originality/Relevance: Football matches components have been analysed in order to understand the behavior of the teams in the competitive scenario of this sport. Key findings: The results show that the more accurate shots a national squad takes in their games, the more chances they got to win, instead of using a game plan based on crossing movements. Ball possession, on its turn, can be a good indicator or a bad one to win matches, when associated to a high number of crosses. Moreover, the alternative of long passes seems to be relevant only when the opponent makes more shots from outside the area or get more blocked shots. Complementarily, defensive actions focused on successful tackles and more interceptions appear as a positive aspect for getting the triumph, considering only the total number of tackles. The accuracy of kicks and defensive actions were relevant to the success of the teams in the competition, suggesting that the improvement of actions related to these two indicators should help national teams to improve their own strengths, in order to maximize their chances of winning matches. Theoretical/methodological contributions: Collecting a large volume of football data from a website and using the Weka program have helped not only to speed up and facilitate the analyses but also should have been important in order not to lose any relation that could be relevant inside the studied scenario.

Development of Kickboxing Tool Media for Pencak Silat Athletes

The lack of assisting tools in improving the quality and accuracy of kicks also affects the enhancement of muscle mass and physical fitness of athletes in the Puslatcab Pagar Nusa Bojonegoro. This research aims to produce a development product of a kickboxing tool that assists in kicks for Pagar Nusa Pencak Silat athletes at the Puslatcab Pagar Nusa Bojonegoro. This study is a research and development (R&amp;D) study that adapts the research and development strategies proposed by Borg and Gall. The data were analyzed using descriptive analysis techniques, consisting of descriptive feedback and assessment scores from all reviewers on each aspect of the product evaluation. The results of the conducted development research indicate that the product is a Kickboxing Tool Media for Pencak Silat Athletes at the Puslatcab Pagar Nusa Bojonegoro. It is suitable for use as a learning medium as it obtained a good average score. Based on the data obtained through the summary of three aspects, namely (1) accuracy aspect, (2) balance aspect, and (3) strength aspect, the small-scale study obtained a total score of 1800, while the large-scale study obtained 2771. Based on these research findings, it can be concluded that the average score for all questions is 2771 (Very Good).

Pengaruh Metode Latihan Dan Power Tungkai Terhadap Tendangan Ke Gawang Jarak 16 Meter Sepak Bola

Research Objectives: To analyze the effect of fixed target training methods and changing target training on the accuracy of kicks on soccer goals. Analyzing the influence of high power and low power on the accuracy of kicks on soccer goals. Analyzing the interaction between training methods and power on the accuracy of kicks on soccer goals on SSB Pringsewu Football School players. Research Methods Experiment with 2 x 2 factorial design. The factorial design involves two factors as independent variables, namely exercise method and leg power. The population of this study were 24 SSB Pringsewu Football School players aged 13 years. The results of the study showed that the results of the training method (fixed targets and changing targets) were 0.035 (&lt;0.05). So there is an influence between fixed target training methods and changing target training on the accuracy of kicks at goal. The sig value for leg power (high and low) was 0.017 (&lt;0.05). So there is an influence between high power and low power on the accuracy of kicks on soccer goals for SSB Pringsewu Football School players. The sig value for Training Method * Power is 0.000 (&lt;0.05). In conclusion, the target training method has changed, resulting in significantly better shot accuracy on goal. High leg power is significantly better than low power. There is an interaction between training methods and power on the accuracy of kicks on goal by SSB Pringsewu Football School players.

The Effect of Mental Fatigue on the Accuracy of the Direct Free Kick in Terms of Some Kinematic Variables for Football Players

Background: Mental fatigue is one of the phenomena associated with the skillful sports performance of football players. There is a link between mental fatigue and the quality of skillful performance. It occurs during or after a mental activity, which is reflected in a decrease in physical fitness and a reduction in the ability to focus. Objectives: This study was designed to find the association between mental fatigue and skill performance by inferring the kinematic variables. Sports skills demand excellent performance that is connected to mindfulness. Mental weariness impacts a person’s ability to perform physically and skillfully in a sport, especially if that performance requires high accuracy and intensity. Methods: The empirical research consisted of 24 players specializing in direct free kicks. Test for the accuracy of free kick shooting, a mental fatigue experiment, and a re-test of direct free kick shooting was performed and analyzed through Kinovea 0.9.5 software. Results: The mean difference in the fatigue level of players before and after concerning the kinematic variables among football players was found to be statistically significant (P-value &lt; 0.001). Conclusions: The study recommended developing programs that support the mental stability of the player during matches to be able to continue the required skill performance, no matter how much mental fatigue he is exposed to, which occurs as a result of several circumstances during football matches.

외적 주의초점과 자율적 골 위치 선정이 축구 페널티킥 정확성에 미치는 영향

본 연구의 목적은 축구 페널티킥 수행 시 외적 주의초점과 자율적 골 위치 선정이 성공적인 슈팅에 미치는 영향을 검증하는 것이었다. 이를 위해 축구 수업을 수강하며 축구 동아리 활동을 하는 24명의 남자 대학생이 본 실험에 자원하였다. 이들 참가자는 외적 주의초점 & 자율적 골 위치 선정 조건, 외적 주의초점 조건, 자율적 골 위치 선정 조건, 그리고 통제조건의 네 가지 조건에서 페널티킥을 수행하였다. 참가자는 각 조건별 12회(네 개의 타깃에 각 3회), 총 48회의 슈팅을 수행하였고, 성공한 슈팅 수가 종속변인으로 측정되었다. 이원변량분석을 수행한 결과, 외적 주의초점에 대한 주효과와 자율적 골 위치 선정(자율성)에 대한 주효과 모두 p .001 수준에서 유의한 차이를 보였으며, 외적 주의초점과 자율성 간 상호작용효과는 발견되지 않았다. 또한 외적 주의초점과 자율성을 결합했을 때 키커가 외적 주의초점만 사용하거나 자율성만 사용할 때 보다 슈팅 성공 횟수가 많았음이 확인되었다. 본 연구 결과를 바탕으로 외적 주의초점을 채택하는 페널티킥 루틴을 수립하고 자율성을 높일 수 있도록 훈련 설계를 한다면 키커의 페널티킥 성공률을 크게 높일 수 있을 것으로 기대된다.

The Effect of Internal Imagery Training on Increasing the Accuracy of Free Kicks for Young Indonesian Football Athletes Aged 13 Years

This study aims to determine the effect of internal imagery training on increasing the accuracy of free kicks of young Indonesian football athletes aged 13 years. This type of research is an experiment with the design of one group pre-test and post-test. The population in this study was 24 young Indonesian football athletes aged 13 years. The sample in this study was 10 people taken using purposive sampling techniques. The instrument used is to measure the accuracy of the free kick using a test of shooting the ball at the target. The data analysis technique used is the paired sample t-test. The results showed that there was a significant influence of internal imagery exercises on increasing the accuracy of free kicks from the initial test and the final test increased by a difference of 4.7, namely from an average score of 9.7 in the pre-test to 14.4 in the post-test, and strengthened by the results of the t-test using a paired sample t-test with a t value of -7,870 and a p significance value of 0.000 &lt; 0.05. This study concludes that there is a significant influence of internal imagery training on increasing the accuracy of free kicks of young Indonesian football athletes aged 13 years.