PURPOSE This study aimed to prove the mediator effect of skill level on participation frequency and injury level of leisure sports players with the highest injury rate. METHODS Raw data of the “2019 Sports Safety accident data” conducted by the Korea Sports Safety Foundation were used for this study. We analyzed 857 leisure sports players participating in events with the top four highest injury rates (Basketball, Soccer, Baseball/Softball, Foot Volleyball). Frequency, descriptive statistics, and correlation analyses using SPSS version 27.0 and Process macro model 4 were employed for analysis. RESULTS The results regarding participation frequency, injury severity, and skill level among recreational athletes are as follows. First, a positive correlation was established between the participation frequency of recreational athletes and their skill levels. Second, the correlation between participation frequency and injury severity was observed only in soccer and basketball. Third, skill level plays a mediating role in the relationship between participation frequency and injury level. The results indicate that as the participation frequency among leisure sports players who participate in ball sports with a high injury rate increases, this affects the degree of injury. CONCLUSIONS Skill level appears to play a mediating role in the relationship between participation frequency and injury level. Based on the results, we recommend safety education not only on the relationship between participation frequency and injury level, but also the intermediary role of skill level.
Purpose The purpose of this study is to investigate the factors for setting proper training duration of frequency that can guarantee the student athletes' right to study and performance, and to derive the ranks of setting proper training duration of frequency of student athletes by school level. Consequently, to provide basic data for the development of training guidelines for the growth period of Korean student athletes. Methods Delphi and Analytic Hierarchical Process(AHP) techniques were used. The Delphi survey was conducted in three phases, and collected data through Delphi survey were computed by SPSS win ver. 22.0 and Excel, using the mean, standard deviation, median, and coefficient of variation. Using the AHP technique, we classified the factors for setting proper training duration of frequency derived through Delphi survey, and calculated the importance by using Microsoft Excel 2010. Conclusion First, elementary students should be guaranteed regular class participation, have basic after school training, and be provided with adequate rest so that they do not lose interest in the exercise. Second, middle school students are required to decide whether to continue exercise based on their ability to exercise and abundant experience. Therefore, when abandoning the exercise, students should be able to faithfully carry out their academic performance. Third, high school students are directly related to college entrance and employment, so they have to concentrate on performance rather than on academic performance.
PURPOSE This study aimed to: 1) compare the differences in static lower-extremity alignment (SLEA) between female ballet dancers (BD) and non-ballet dancers (NBD); 2) investigate the differences among gesture leg (GL) and supporting leg (SL) in BD and dominant leg (DL) in NBD; and 3) compare limb asymmetry between groups. METHODS Twenty-nine female BD and 20 NBD were recruited for this study. The quadriceps, tibiofemoral, rearfoot, and genu-recurvatum angles, tibial torsion and varum, and navicular drop height were measured. An independent t-test was conducted to compare SLEA and limb asymmetry between groups. One-way analysis of variance with Bonferroni post-hoc tests were performed to determine the differences among the GL, SL and DL. RESULTS BD showed lower quadriceps and rearfoot angles, less tibial varum and navicular drop, and greater tibiofemoral angle (p<.005) than NBD. BD showed less quadriceps angle asymmetry but greater tibial torsion asymmetry (p<.01) than NBD. GL and SL in BD showed differences in quadriceps, tibiofemoral, rearfoot angle, tibial torsion and navicular drop compared to NBD. CONCLUSIONS Repetitive dance movements can transfer varying forces to the GL and SL, potentially contributing to SLEA asymmetry. An intervention strategy that can reduce SLEA asymmetry in BD is needed, as is the identification of elements of ballet training that contribute to maintaining a normal SLEA.
