PURPOSE This study aimed to examine the mediating effect of psychological needs in the relationship between multiple coaching styles and teamwork among college football players. METHODS This cross-sectional study involved 526 elite football players. Descriptive statistics, reliability analysis, confirmatory factor analysis, correlation analysis, path analysis, and macroprocess were performed using statistical software to test the mediation effects of the data collected. RESULTS The findings suggested that autonomy-supportive and structure coaching styles positively correlated with and impacted psychological needs satisfaction and teamwork. Conversely, control and chaos coaching styles negatively correlated with and impacted psychological needs satisfaction and teamwork. In addition, autonomysupportive and structure coaching styles negatively correlated with and impacted psychological need frustration, while control and chaos styles positively correlated with and impacted psychological needs frustration. Furthermore, psychological needs satisfaction and frustration were found to partially mediate the relationships between autonomy support and teamwork, structure and teamwork, control styles and teamwork, and chaos styles and teamwork. CONCLUSIONS Autonomysupportive and structure coaching styles positively influenced teamwork by satisfying psychological needs. In contrast, control and chaos coaching styles negatively impacted teamwork by contributing to psychological needs frustration.
PURPOSE This study investigated the correlation between anaerobic power and maximum muscle strength in relation to core muscle strength among Korean national golfers. METHODS A total of 96 national golfers (53 females and 43 males) participated in the study. Body composition was assessed using multi-frequency impedance devices, while core and lower extremity muscle strength (extension, flexion, flex/ex ratio) was measured using isokinetic strength tests. Anaerobic power was evaluated through peak power, average power, and power drop rate tests conducted on bicycle ergometers, along with one-repetition maximum (1RM) tests for squats and bench presses. Mean and standard deviation values were calculated for all variables, and linear regression analysis was performed to verify correlations, with statistical significance set at α=.05. RESULTS The comparison of physical characteristics between male and female national golfers revealed significant differences in age, height, body fat percentage, lean body mass, and weight. There was a strong correlation between core muscle strength and isokinetic lower extremity muscle strength. Additionally, a strong correlation was observed between core muscle strength and anaerobic power and between peak power and average power. Furthermore, there was a high correlation between core muscle strength and bench press and squat maximum muscle strength. CONCLUSIONS This study highlights the correlation between various professional physical fitness variables of Korean national golfers over the past decade. The findings are expected to provide valuable insights for coaches and players in developing future training programs.
PURPOSE This study aimed to develop physique and basic physical fitness evaluation criteria for middle school soccer players, providing a foundation for training and player development to be used by coaches in the field. METHODS The study involved 440 middle school soccer players (Grade 1=178, Grade 2=132, and Grade 3=130). Measurements were conducted on seven physique and ten basic physical fitness factors. Measurement results were organized using Windows Excel 2021 and descriptive statistics were performed using Windows SPSS 26.0. Based on the descriptive statistics of the measurement results, the Cajori 5-Grade evaluation method was applied to establish evaluation criteria for each grade and fitness component. RESULTS The study results provide evaluation criteria for middle school soccer players based on the measured data, considering grade, physique, and basic physical fitness. CONCLUSIONS The criteria established in this study are expected to be widely utilized by coaches in the field to set training goals for areas such as player selection, development, injury prevention, and rehabilitation.
PURPOSE This study aimed to identify the factors affecting job stress in fitness instructors, and to elucidate the mediating effects of mindset on the relationship between self-reflection and job stress. METHODS Using convenience sampling, a survey was conducted with 217 male and female fitness instructors nationwide. Statistical analyses were performed using SPSS 25.0 for descriptive statistics, frequency analysis, and reliability analysis, and AMOS 22.0 for confirmatory factor analysis to validate the measurement tools. SPSS PROCESS Macro v4.0 (Model 4) was utilized to verify the mediating effects of the research model. RESULTS Self-reflection among fitness instructors was found to significantly reduce job stress. A growth mindset was found to have a partial mediating effect on the relationship between self-reflection and job stress among fitness instructors, whereas a fixed mindset did not have a significant impact . CONCLUSIONS The results confirm that self-reflection and having a growth mindset significantly influence the reduction of job stress in fitness instructors.
PURPOSE This study aimed to analyze the differences in ground reaction forces (GRF) and pelvis and trunk kinematic patterns between groups based on ball speed during pitching. METHODS Twenty-nine males were recruited for this study. Participants were categorized based on ball speed into high (HG), medium (MG), and low (LG) ball speed groups. Statistical analysis was performed using one-dimensional statistical parametric mapping (SPM1D) one-way analysis of variance to compare GRF and pelvis and trunk kinematic patterns, followed by Bonferroni post-hoc tests. RESULTS Drive leg anterior and resultant GRF were greater in the HG than in the LG (p<0.001). The posterior GRF of the stride leg in the HG was greater than in the LG (p<0.008). Additionally, the vertical GRF of the stride leg was greater in the HG than in the LG (p<0.003), as was the resultant GRF of the stride leg (p<0.003). CONCLUSIONS The GRF of the drive and stride legs was significantly related to ball speed, indicating that a pitching strategy to maximize the GRF of the drive and stride legs is required.
PURPOSE This study aimed to investigate the effects of different resistance training structures on basic physical fitness, 1-repetition maximum (1RM), and isokinetic shoulder and knee muscle functions in male college students. METHODS Forty college students were divided into four groups: control group (CG, n=10), compound set training group (CSG, n=10), pyramid set training group (PSG, n=10), and superset training group (SSG, n=10). Excluding CG, each group performed a different resistance exercise method at an intensity of 60~80% 1RM for 60~90 min, three times a week for eight weeks. To compare the effects of resistance training structures, we confirmed body composition, basic physical fitness, 1RM, as well as isokinetic shoulder and knee functions. RESULTS Results indicated that the PSG exhibited the most significant improvement in relative peak torque in isokinetic shoulder and knee testing compared to the other groups. Additionally, all exercise groups positively affected back strength, 40m sprint, and 1RM compared to the CG, although no significant differences were observed among exercise groups. CONCLUSIONS The findings suggest scientific evidence supporting the effectiveness of pyramidal resistance training in improving isokinetic shoulder and knee muscle functions in male college students.
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.
PURPOSE This study aimed to verify the influence of imposter syndrome tendencies in athletes on their achievement goal orientation, and regulatory focus. METHODS Data collected from 413 athletes through surveys were analyzed using SPSS version 27.0 and AMOS version 21.0 to assess reliability and validity, conduct independent sample t-tests, perform correlation analysis, and conduct multiple regression analyses. RESULTS The findings revealed significant sex-based differences in imposter syndrome tendencies, achievement goal orientation, and regulatory focus. Moreover, significant correlations were observed between sub-factors of imposter syndrome, achievement goal orientation, and regulatory focus. Imposter syndrome tendencies had varying effects on achievement goal orientation, with the discount factor significantly influencing approach orientation, the fake factor significantly affecting avoidance orientation, and fear factors significantly impacting self-avoidance. Additionally, imposter syndrome tendencies influenced regulatory focus, as the discount factor significantly affected both promotion focus and prevention focus, while fake and fear factors significantly influenced prevention focus. CONCLUSIONS This study underscores the importance of athletes' imposter syndrome tendencies as significant contributors to psychological variables related to motivation, including achievement goal orientation and regulatory focus.
PURPOSE Sporting events constitute attractive platforms for providing participants with unique experiences. This study was aimed at investigating the structural relationships among perceived sporting event quality, image, trust, satisfaction, and loyalty of small-scale golf tournament participants. METHODS The questionnaire was structured in five dimensions: sporting event quality (4 sub-dimensions and 13 items), image (3 items), trust (3 items), satisfaction (3 items), and loyalty (4 items). A total of 217 amateur golfers from four Ecolian public golf clubs (Gwangsan, Jechon, Jeoungsun, and Younggwang) during the golf tournament participated in this study. Factor, reliability, validity, and structural equation model analyses were performed utilizing SPSS 24.0 and AMOS 24.0. RESULTS This study indicated that sporting event quality in a small-scale sporting event was the crucial factor of image, trust, and satisfaction, which, in turn, significantly impacted loyalty. CONCLUSIONS The results of this study contribute to theoretical understandings of sporting event quality factors that predict sport consumers’ image, trust, and satisfaction in the context of sports and leisure. Additionally, this study offers practical suggestions for administrators who develop marketing strategies for small-scale sporting events.
PURPOSE This study aimed to examine contemporary sports reality and its problems through the feature-length independent film <Not Out>, which focused on baseball, a popular sport, and highlighted its rather dark side. METHODS The researcher performed a textual analysis using the perspective of critical theory. RESULTS Gwang-ho was the hero of a walk-off hit in the national baseball competition final, who suffered from three career strikes during his third year of high school and thought that he had bright future ahead of him. Before the amateur draft, Gwang-ho boldly rejected the proposal of a trainee contract from a professional team (strike 1), then he was subsequently not selected in the amateur draft (strike 2), before he applied for the college entrance examination for baseball specialties, and was eventually rejected. (strike 3) In the end, he was able to enter college through a bribe given by his father (not-out situation). CONCLUSIONS <Not Out> is a film based on a true story, and it showcased the realities of elite sports by revealing the dynamics of society and school, where the main character responded with reluctance and indifference. This movie highlighted the realities of delinquency, violence, abusive language, bribe, and violations of the right to learn and how these have continued to evade the law despite being thought to be gone.
