PURPOSE The purpose of this study was to provide information for improving the performance and skills of 500 m speed skaters by analyzing the kinematic and kinetic changes in their slide board movements over time. METHODS The subjects were 10 male short-distance skaters in their 20s to 30s who were registered as professional athletes with the Korea Sports Council. The changes in joint angle, joint moment, and joint power over time in the subjects’ slide board motion were measured and analyzed. RESULTS It was found that during phase 2 of the skater’s slide board movement, there was an increase in plantar flexion and a decrease in flexion of the lower extremity joint and extension of the knee and hip joint, with decrease in positive power of the knee joint. CONCLUSIONS The results of this study are expected to provide practical information to skating coaches and athletes by quantifying the biomechanical factors observed over time during slide board movements. In addition, this study is expected to contribute to the field of speed skating by presenting scientific training methods and proposing new analysis techniques to improve performance in the future.
PURPOSE By analyzing trends in Taekwondo demonstrations, specifically in breaking and performances, to date, this study aims to offer timely insights and set the groundwork for future research. METHODS We used Korean abstracts from a total of 425 papers containing the keyword “Taekwondo demonstrations” spanning 20 years from April 2004 to April 2023. We employed Python 3.5.2 to conduct dynamic topic modeling (Latent Dirichlet Analysis, LDA) and to examine the correlation between the topic distribution by section and the publication year. RESULTS The main findings from the LDA are as follows. Topic 1 (10%): “The development of demonstrations: performance in culture and art, ” Topic 2 (11%): “The development of formalized rules and judgments in a demonstration event,” Topic 3 (08%): “A study on the educational courses and professionalism of Taekwondo coaches,” Topic 4 (11%): “Technical movements and kinematic characteristics,” Topic 5 (09%): “A study on marketing perspectives of demonstration performances,” and Topic 7 (33%): “Global exchange: the development and rise of internationalization.” In the correlation analysis between the topic share by section and the publication year, Topics 1 to 5 exhibited no statistically significant correlation. However, Topic 6, “A study on the attainment of events, training, and the psychological factors influencing athletes” and Topic 7, “Global exchange: the development and rise of internationalization,” also displayed a very statistically significant but negative correlation. CONCLUSIONS Future research should focus on studies on the psychological management of athletes during the performance of specific techniques and training methods. Further research considering the global characteristics of Taekwondo may be required.
PURPOSE This study investigated weight-class-related strength parameters during pulling performance in the ssireum. METHODS Elite ssireum athletes participated, 24 divided into four weight classes of six athletes each. They performed a pulling task while gripping a tube fixed to a three-axes load cell sensor, standing on force plate platforms. The test involved 30 repetitions at maximal force with the legs bent, the ssireum’s typical posture. Maximal force (Fmax), time to maximal force (TFmax), time difference between maximal forces (TDmax), and horizontal and vertical angles at maximal force (HAmax and VAmax, respectively) were analyzed from the load cell sensors. Ground reaction force (GRF) was collected, including peak force along the three axes, the resultant force, and the center of pressure (COP). One-way ANOVA tests were conducted to compare among weight classes (α=.05). RESULTS Fmax measured by load cell showed significant difference between classes (p<.05), indicating that the second weight group (Geumgang class) generated more pulling force than the heavier classes. In GRF results, lightweight classes demonstrated larger COP difference between the left and right plates. Specifically, the Geumgang class showed more movement in the anterior-posterior (AP) direction on the left plate. The peak GRF in the right plate of the AP (p<.001) and ML (p<.05) directions showed significant differences between lighter and heavier weight classes. CONCLUSIONS The Geumgang class generated greater pulling force, and the lighter classes demonstrated more leg contribution. Force generation did not solely depend on body mass; instead, lighter athletes often relied on the lower limbs to compensate for their limitations, a strategy commonly observed in competitions.
PURPOSE This study seeks to contribute to the enhancement of the performance of domestic wheelchair racers by producing 3D-printed customized gloves and verifying their application effect. METHODS A total of three male wheelchair racers who belong to the T54 and have won gold medals in the National Para Games within the last three years were selected as subjects. Each subject performed three session s of muscle activity and maximum speed measurements before and after applying a 3D-printed glove during the stroke and recovery phases of wheelchair racing, focusing on the pectoralis major (PM), triceps brachii (TB), and erector spinae (ES) muscles. To standardize the muscle activity measurement data, the relative muscle activity level (%) for each section was calculated by maximum voluntary isometric contraction (MVIC) for each subject. All maximum speeds of each round of driving were calculated by the average record for comparative analysis. In addition, to verify the effectiveness of applying the 3D-printed glove, the Wilcoxon signed rank test, which is a non-parametric test method, was performed on all measured values using SPSS 24.0. RESULTS This study derived the following results. First, a statistically significant difference was observed in the muscle activity of each major muscle before and after using the 3D-printed glove. In common, an increase in muscle activity of the PM, TB, and ES was confirmed in the stroke section, and an increase in muscle activity of the TB was confirmed in the recovery section. Second, a statistically significant difference was documented in the maximum speed before and after using the 3D-printed glove. When using 3D-printed gloves, the maximum speed increased by 4.57, 3.63, and 1.06km/h for Payer A, and by 5.9, 6.04, and 7.86km/ h for Player B. In the case of Player C, the speed increased by 6.73, 2.27, and 0.83km/h, and all three players improved their maximum speed through the 3D-printed gloves. CONCLUSIONS Our study suggests that the application of 3D-printed customized gloves can have a positive impact on the performance of wheelchair racers. If the application of 3D-printed customized equipment is extended to athletes in a wider range of sports in the future, this could significantly contribute to the improvement of performance in domestic disability sport.
PURPOSE This study aimed to subdivide the market based on the general characteristics and consumer psychology of sports brand collaboration consumers and provide basic data for efficient collaboration marketing activities of sports companies. METHODS The subjects of this study were high school, college, and graduate students from high schools and universities in the Seoul and Gyeonggi area. Of the 600 copies of the questionnaire distributed, 475 were selected and analyzed in the final sample. Regarding the statistical method for this study, the PASW 18.0 statistical program was used for the frequency, exploratory factor, reliability, hierarchical cluster, K-means clustering, and cross analyses, as well as the one-way ANOVA. RESULTS The results of the analysis suggested five subdivided clusters with according marketing strategies: “external male,” “practical male,” “twenties design preferred female,” “low-interest women,” and “high consumption optional attributes” groups.
The Purpose of this study was to examines the effect of smart sport wear's innovation attribute on product attribute, focused on innovation resistance. Data were drawn from 253 college students and graduate college students in three different university. The model was tested using SPSS/PC ver. 18.0 for windows and AMOS 20.0 program. Data were analyzed using frequency analysis, reliability analysis, confirmatory factor analysis, correlation, and structural equation modeling techniques. The statistical significance level was set at a<.05. The results were as follows. First, perceived attributes of smart sport wear had a negative effect on innovation resistance. Second, innovation resistance had a negative effect on product attribute. Third, perceived attributes of smart sport wear had a positive effect on product attribute. Forth, innovation resistance partially mediated the relationship between perceived attributes of smart sport wear and product attribute.
PURPOSE The United Nations (UN) has proposed 17 Sustainable Development Goals and has been extending its efforts to achieve them. Sport can be linked closely to the third goal, which is related to health and well-being. Therefore, this study aimed to explore and to analyze individual's changed sport activities during the COVID-19 pandemic, focusing on ways to achieve health and well-being related goals through sport. METHODS A qualitative research method was employed, and in-depth interview methods were used for data collection. For data analysis, categorization and itemization were used along with content analysis. RESULTS Looking at the derived results, in the context of an infectious disease such COVID-19, sport activity patterns have changed due to reasons such as stadiums or facilities, interpersonal reasons, fear, inconvenience, staying healthy, increase in leisure time, and individual preferences. CONCLUSIONS Due to the COVID-19 pandemic, the indicators of health and well-being related SDGs are exhibiting a downward trend. At this point, it is necessary to find a way to achieve the goal through sport that can participate voluntarily for the purpose of pursuing pleasure.
This study aimed to compare professional sport consumers on the basis of their ideology, spectator motivation, and message framing. In order to answer the research questions, the study first examined whether message framing effects existed across the designated variables. The study also assessed whether there were any differences in progressive-conservative ideology and motivation across respondent groups. The participants were spectators of two professional sports, soccer and baseball, sourced from 9 stadiums. Data were collected by the researcher and 33 survey assistants, from May to August 2013. The results of a chi-square test, MANOVA, and MANCOVA indicated that significant effects in message framing existed across the two variables. The findings also showed differences in ideology and motivation across major variables (e.g., age, gender, sports, and choice of newspaper). Some issues including media communication strategies were discussed based on the results of this study.
Purpose The purpose of this study was to develop a psychic energy management scale that construct a concept and based on extracted contents of structural validity and reliability of university athlete psychic energy management inventory. Methods To develop the scale, the researches were completed <research ⅰ; constructing sub-factors of Psychological Energy Management, ⅱ; developing scales of psychic energy management, ⅲ; verifying validity of psychic energy management>. The results shown are a follows. Results The psychic energy management inventory contents of the university athlete were categorized into five categories ; team energy, game energy, environment energy, leisure energy and body energy. Through statistical procedures and factor analysis, the psychic energy management inventory was developed with 4 factors 18 items (coach energy 4 question items, game/environment energy 6 question items, colleague energy 4 question items, body energy 4 question items). Conclusion Convergent validity and discriminant validity was demonstrated through the external validity, the multi-group analysis confirmed the structural equivalence of the scale between the school grades.
The purpose of this study is to analyse that the college students' recognition on abuse scene of sport broadcasting influences verbal violence. The subjects were college students in P municipality and this study distributed 230 questionnaires among them. And 203 questionnaires were collected except some questionnaires that didn't fill in them properly. To analyze them, this study used SPSS Win 20.0 and AMOS 20.0 and came to a conclusion as follows. First, the College students' negative recognition on abuse scene of sport broadcasting had negative influences on verbal violence. Second, home environment wasn't affected by the college students' negative recognition on abuse scene of sport broadcasting. Third, the verbal violence also wasn't much effected by the home environment of the college students. Finally, the home environment didn't intervene in the relationship between the college students' recognition on abuse scene of sport broadcasting and the verbal violence. Therefore this study considers that the abuse scene in the game on the live broadcasting needs to apply sanction properly by a broadcasting station for TV viewers, although the college students with a higher negative understanding of this abuse scene use less verbal violence.
