PURPOSE The purpose of this study is to section the stages of performance development based on the track and field athletes' performance records, derive the performance development span, which was a continuum of the development stages, and extract the psychological experience of the performance development span. METHODS In this study, 56 retired track and field athletes were provided with competition records, and 10 athletes participated in in-depth interviews. With the stage of performance development partitioned using long and short-term moving averages and regression slope in PRR, a continuous of performance development span was derived. To extract psychological experiences in the performance development span, a subject analysis was conducted after an in-depth interview. RESULTS First, the track and field athletes' performance development stage calculated short and long-term moving averages in the PRR. Based on the average difference in the regression slope of the initial 20% CPR in which the long-term moving average was not calculated, it was divided into beginning, rising, peak, and decline periods. Second, the performance development span was a continuum of the stage was of performance development, and the beginning period was 0 < PRR ≤ 7, it was a time when the competition record rises sharply. The rising period was 7 < PRR ≤ 60, which was a virtuous cycle time of growth athlete. The peak period was 60 < PRR ≤ 74, which was a time when the peak record was maintained. The decline period was 74 < PRR ≤ 100, which was a time when the competition record was downward. Third, throughout the performance development span physical intelligence of track and field athletes was based on their natural physical superiority, the technical skills rises and remains at its peak and then enters a downward trend. Competitional Intelligence aims to become personalization as it matures gradually while its competition management capability and game knowledge are immature. Psychological intelligence overcomes the initial psychological atrophy to form confidence, and after experiencing psychological burden at the peak, confidence decreases. In the environmental context, the competition record rises in the early stages, continues to rise, peaks, and enters a downward trend. CONCLUSIONS Track and field athletes' performance development span was implemented as a continuum of beginning, rising, peak, and decline periods, and the psychological experience of the performance development span formed a span of physical intelligence, competitional intelligence, psychological intelligence, and environmental context.
This study aimed to examine the change of the indices in blood gas, ions, and by-products of fatigue substances and components in collegiate elite Kumdo competitors, who carry out a number of competitive games during one day tournament event. Subjects were carried out total 6 simulated, but followed same conditions and rules of actual competition, with providing similar inter-game break time. Eight well trained male competitors, who had awarded from national wide competitions, voluntarily participated in this study and revealed 51.5(±8.8) mL·kg-1min-1 of maximal oxygen consumption and 12.4(±5.1) % body fat. TWOWAY ANOVA (tournament round vs. pre & post each game) was adopted to test whether the mean differences were existed, and the interaction between individual factors and main effect within each factors were analyzed. Statistical significance was set at Alpha (α) = .05. While there were no significant changes in blood hydrogen ion concentration (i.e., pH) and partial pressure of oxygen (PO2), partial pressure of carbon dioxide (PCO2) significantly decreased as the tournament games were repeated. The level of hemoglobin and hematocrit were significantly elevated only during the 1st round of tournament. Na+ was significantly increased but K+ was decreased. Ca2+ concentration however, was not significantly altered. Although the changes of blood glucose level did not show any consistent patterns, free fatty acid (FFA) concentration was increased after completed each game compared to prior to initiate the each game. Blood NH3, lactic acid, and uric acid concentration increased at immediately after each game, and the pattern was maintained throughout the tournament round continued. These results reflected that the repeated participation of the tournament may cause the accumulation of the by-products of fatigue substances in blood and alteration of various ion components and energy substrates. Accordingly, the ways of reducing the physical fatigue and providing adequate energy source inter-tournament games needs to be necessarily considered for successful Kumdo competition. Data obtained from this study could valuable for searching the effective training and management methods to improve the performance and reduce the fatigue of the professional elite Kumdo competitors.
PURPOSE This study explored psychological experiences in long jump competitions and examined the continuity of psychological experiences over time. METHODS A total of 28 adult long jumpers, 18 men and 10 women, were provided data through in-depth interviews. Data on psychological experiences were extraced through inductive content analysis, while continuity by period was analyzed by calculating the response frequency ratio using Excel. RESULTS First, the psychological experience in the long jump competition was categorized as fundamental, competition intelligence, emotional control, and communication capacity experience. Second, in long jump competitions, results showed that jumpers experienced mixed feelings of anxiety and pressure, self-confidence, and concentration in the first period; peer communication and analysis thinking were necessary in the second period; practical intelligence and pressure control were important in the third period; learning ability and creativity were crucial in the fourth period; learning ability and coach communication were applied in the fifth period; and fighting spirit and creativity were present in the sixth period. Third, the psychological experience of long jumpers by period, basicphysical strength was maintained; competition intelligence increased in the second and fourth periods; communication skills increased until the fifth period, and decreased after; while emotional control decreased. This reflects the contextual changes over time andthe change in competition records owing to that. CONCLUSIONS In the long jump competition, psychological experience changes by period and affects competition records. This study will contribute to further understanding of psychological continuity.
The purpose of this study was performance improvement through analysis of movement in elite field hockey players regarding positions using real-time GPS monitoring for compared training game and 2014 Incheon Asian Games. Fifteen elite women field hockey players (Defender: 4, Mid-fielder: 6, and Forward: 5) participated in this study. There were 2014 Incheon Asian Games Korean national team. Real-time GPS system analysis was completed during 10 training game appearances 5 2014 Incheon Asian Games appearances. The results of this study showed that in training game mid-fielder>forward>defender for 3, 4, 5, and 6 zone at speed zone by moving distance, in 2014 Incheon Asian Games forward>mid-fielder>defender for 6 zone at speed zone by moving distance. And moving distance by quarter increased all position in 2014 Incheon Asian Game more than training game. Therefore, These data might be useful to analysis of movement in field hockey players. Moreover improved performance and individual exercise ability by feedback for players distance, heart rate, and exercise trajectory. Thus, Gold-medal won at the 2014 Incheon Asian Games in field hockey.
This research begins from the awareness that even though there are different forms of wrestlings in the ethnic minority groups in China, the study on their morphological aspects has reached the limit. Based on the documents and VOD data about these wrestlings of each ethnic group, their morphological characteristics can be verified as follows. First, The postures of Han and Mongolian people take the way of two players standing and playing, and Korean-Chinese people and Hui people take a saddle stance using a thigh band. Second, as for the arenas for the wrestlings, owing to some geographical features and natural environments, they were set up at a specific area during the traditional era using natural objects(grass, lawn, soil, sand). Yet, in the modern times, they have been changed as being installed and run in modernized gyms, sports fields, or parts following the standard of stadium facilities supervised by each organization. Third, with regard to the play wear of wrestling, some parts of the traditional costumes have been transmitted and worn. However, in case of most of the traditional costumes, it has been found out that modernized clothes which take the forms of garments developed since the modern era into consideration are being used. Fourth, in terms of the game equipments of wrestling, certain clothes(uniform, vest), running shoes and a band(a thigh band) should be worn.
This study aimed to explore the psychological factors affecting sports performance and their purposes as perceived by adolescent athletes. Study data were collected by conducting an open-ended survey with 232 student athletes from adolescent athletes in S city. The collected data were categorized using content analysis, which was conducted twice to explore the psychological factors affecting sports performance and their purposes. From 537 answers, 30 performance-affecting psychological factors—including confidence, endurance, effort/dedication, optimal tension, and social support—were identified, and they were classified into five categories: psychological fundamental, mental toughness, motivation, emotional stability, and social relationships. From 588 answers, the purposes of the psychological factors were identified, including performance achievement, motivation enhancement, demonstrating mental toughness, cognitive strategy, confidence increase, emotional regulation, injury prevention, game strategy, and reinforcement cohesion. These performance-affecting psychological factors and their purposes may serve as a reference to understand how secondary school students perceive the relationships among various psychological factors and the relationship between the psychological factors and performance. This study is expected to inform goal setting and content organization in psychological skills training.
Purpose The purpose of this study was to develop algorithms and software that can track the trajectory of table tennis balls using image-processing algorithms to obtain information quickly for under and establish tactics used in table tennis. Methods The algorithms used in the field of computer vision were applied on two matches played by novice and two matches during international competitions by elite athletes. Reliability analysis was performed by comparing the table tennis ball bounce frequency in each zone obtained through the automatic method and the manual method. Results The mean reliability of the two novice games was only 85.1 ± 3.69%, total error was 14.9 ± 3.69%, overestimation error was 52.2 ± 9.78%, and underestimation error was 47.8 ± 9.78%. While the mean reliability of the two international tournaments was 71.8 ± 0.87%, the total error was 28.2 ± 0.87%, overestimation error was 82.0 ± 8.03%, and underestimation error was 19.2 ± 7.75%. Conclusions Although the target reliability of algorithms and software developed in this study was achieved only in novice competitions with 80%, the over-estimation errors were generally high in international competitions, showing the potential for further improvement.
This study aims to visualize the data regarding the entire rally and the final 5 strokes in a badminton single match and to present its analysis method using the parallel coordinate system. For this study, were used the videos of three games of the final, semifinal, quarterfinal in the '2014 National Fall Badminton Championship’ where the L Player of Gyeonggi C university won championship. Herein, the data was collected utilizing a tagging technique of Dartfish (Ver 8.0), in terms of shuttlecock ball direction, judgment of final kill stroke, and used technique. The data collected were classified and condensed using Excel 2013 program, and the parallel coordinates, which is provided with free open source through D3js.org, was utilized as a data visualization tool. As the results; first, the entire rally of single matches in badminton was visualized; second, as an analysis method of data visualization in relation to final 5 strokes, game pattern analysis, attack success course analysis by players and techniques, attack failure course analysis by players and techniques, and a plurality of selected condition analysis by players and techniques could be presented. In future, when processing subsequent studies that can provide us together with numerically analyzed data as well as visualization through a parallel coordinate system, it is expected that this study could be applicable to a variety of events and utilized in the actual sports games.
Purpose The following study was conducted to suggest and verify the validity of the concept of team performance, which has previously been considered as the total sum of individual performances. Method The concept of team performance was extracted by a conductive content analysis and an exploratory factor analysis of the data gathered from middle school football players. To verify the validity of the extracted concept, football experts' opinions were collected. Results The idea of team performance, categorized by Footballship, Team Capability, Personal Capability, Communication among Members, has been taken differently from the total sum of individual performances. Footballship is the virtue that should be materialized, and simultaneously earned during the game. Team Capability is a available resource for team's performance, Personal Capability is a available resource for a player's performance, and Communication among Members is the intimacy of communication between coaches and players. The conglomeration of experts' opinions on the concept of team performance and its components shows that team performance is evidently different from the total sum of individual performances. Conclusion The following study has been conducted to suggest and verify the validity of the concept of team performance. Team performance exists, standing distinct from the sum of individual performance, and understanding the concept of team performance will contribute not only to understanding performance, but also to improve the effectiveness of training and managing the team. Interest of the sport society is looked forward to.
Purpose : The purpose of this study was to investigate coaching information with which coaches provided players during badminton competition. Methods : To this end, we generated an open-ended questions and presented it to 88 high school athletes registered in the Badminton Korea Association. The survey was conducted during a tournament and immediately after the tournament to collect the data. The collected data were categorized through inductive content analysis. Results : As a result of this study, a total of 480 raw data points collected through the open-ended survey were categorized into four general areas: psychological information, technical information, tactical information, and game operation information. Specifically, psychological information was divided into six subdivisions: concentration, confidence, relaxation/stabilization, mental toughness, play thought, and passion; technical information was broken into four subdivisions: strokes, footwork, swing and posture, and position preparation; tactical information had four subdivisions: coping to opponents, play changes, rotation, and manipulation of opponents; and, game operation information was divided into two subdivisions: taking the lead in a game and changing atmosphere. Conclusions : In other words, in badminton competition, the coaches strengthened psychological skills that promote psychological stability to attain the athletes’ peak performance and modified the athletes’ motion into the action necessary for achieving accurate techniques. Furthermore, they provided a variety of coaching information so that the athletes will respond appropriately to their opponents’ play, take the lead in games and induce a positive mood. The psychological, technical, tactical and game operation information offered by badminton coaches are the main factors influencing the performance of badminton players and suggest a need for the proper management and control of the coaches as well as athletes for the peak performance.
