ISSN : 1598-2920
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 This study aimed to compare and analyze the game content of the “3-rounds, 2-win system” matches before and after the rule revision implemented in 2022. METHODS This study covered 72 matches from the 2019 Rome World Championships Grand Prix, 92 matches from the Sofia World Championship Grand Prix, and 173 matches from the 2022 Rome World Championships Grand Prix. In total, 337 game videos were analyzed to assess the players‘ game content before and after the rule revision. RESULTS Analyzing the basic skills before and after the revision shows that the frequency of round kicks and pushes was high. Notably, while the frequency of round kicks, which are primarily used by players, decreased after the revision, the scoring success rate increased. CONCLUSIONS Based on the research findings, it is believed that post-revision, players are focusing more on game management aimed at scoring rather than attempting preliminary movements or connecting kicks to deceive their opponents.
PURPOSE This study aimed to investigate the current status of KADA’s chaperone management in order to suggest policy proposals for the establishment of a stable and sustainable chaperone pool. METHODS We conducted a literature review and document analysis, along with formal and informal dialogues with experts to supplement the data that could not be obtained through these methods. RESULTS This study suggested practical ways for KADA to establish a chaperone pool by leveraging the government’s volunteer platform and collaborating with universities that have sports-related departments across Korea. In addition, it proposed specific approaches to promote and encourage university students to engage with chaperoning. CONCLUSIONS It is anticipated that this study will facilitate the implementation of the proposed policies in the field of sports and position KADA as a model for other NADOs in terms of chaperone pool composition.
PURPOSE This study aimed to explore methods for stimulating consumer purchasing behavior in the sportswear market, where gaining a competitive edge through traditional means has become increasingly challenging, by focusing on the recently highlighted environmental, social, and governance (ESG) management practices. The objective was to present strategic alternatives for sportswear brands grounded in sustainable management and value creation. METHODS The research employed SPSS 21.0 and AMOS 21.0 for frequency analysis, reliability and validity analysis, confirmatory factor analysis, structural equation modeling, and mediation effect analysis. RESULTS First, among the sportswear brand‘s ESG message trust and ESG authenticity, only ESG authenticity positively impacted consumer behavior. Second, both the sportswear brand‘s ESG message trust and ESG authenticity were found to positively influence ESG congruence. Third, ESG message trust and ESG authenticity negatively affected ESG skepticism. Fourth, ESG congruence positively impacted consumer behavior. Fifth, ESG skepticism was found to negatively influence consumer behavior. The mediation effect analysis yielded the following results: First, the direct effect of ESG message trust on consumer behavior was not statistically significant; however, a full mediation effect was observed through ESG congruence and skepticism. Second, the direct effect of ESG authenticity on consumer behavior was statistically significant, with a partial mediation effect through ESG congruence and skepticism. CONCLUSIONS For sportswear brands to achieve sustainable management and profit generation, it is essential to explore methods for stimulating consumer purchasing behavior based on trust and authenticity in ESG messages.
PURPOSE This study aimed to develop the theory of child abuse of children with disabilities in Adapted Physical Education (APE). METHODS A grounded theory study was conducted based on a constructivist approach. Data were collected via in-depth interviews. Participants were 20 instructors selected based on theoretical sampling. The collected data were analyzed in the order of open coding, axial coding, and selective coding. RESULTS First, the direct causal conditions of abuse of children with disabilities in APE were the instructors’ and guardians’ distorted perception towards the disabled children along with the individual vulnerability of children with developmental disabilities. Second, the contextual conditions that form the background of the abuse of children with disabilities in APE included the burden of the instructor due to the unjust demands of the guardian of the child, the growth background of the instructor, and the repressive atmosphere of APE. Third, abuse of children with disabilities can be divided into three types: ‘active abuse’ based on the instructor’s distorted viewpoint of the child with a developmental disability, ‘passive abuse’ due to the unjust demands of the guardian, and ‘passive abuse’ due to the structural problems in the APE field. Fourth, the abuse of children with disabilities in APE, which can be distinguished by different characteristics, affects the instructor’s inner conflict and self-reflection. CONCLUSIONS This study approached the phenomenon of abuse of children with disabilities in Korean adapted physical education as a grounded theory, and the theory generated is expected to contribute to the establishment of strategies necessary to design adapted physical education in keeping with human rights.
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.
This article analyzes and compares the methodologies used in physical activity participation surveys from England, Australia, and South Korea. Specifically, it examines the “2021–22 Active Lives Adult Survey” from England, the “2021–22 AusPlay (15+)” from Australia, and the “2022 National Sports Participation Survey” from South Korea, highlighting both similarities and differences in their approaches. The analysis led to two key insights. First, there is a need to expand the scope of respondents in South Korea’s National Sports Participation Survey. Currently, the survey targets only 0.02% of the population aged ≥10 years, whereas the surveys in England and Australia gather data from a wider age range and more diverse regions. Therefore, South Korea should adopt online, postal, and mobile survey methods to widen the respondent pool and enhance the representativeness and reliability of the data collected. Second, South Korea needs to update its physical activity participation standards. The current benchmarks fall below international recommendations. Establishing new criteria that specify activity duration, intensity, and type is essential for effectively improving public health policies. The results of this study emphasize the importance of accurately assessing and enhancing physical activity participation in South Korea. These findings are expected to contribute to the development of effective sports policy standards in line with the World Health Organization’s global action plan.
PURPOSE This study aimed to investigate the effects of regular moderate- and vigorous-intensity aerobic exercise on body composition, resting metabolic rate, and blood lipid profile in normal-weight obese women. METHODS The participants in the study were normal-weight obese women in their 20’s, divided into moderate- and vigorous-intensity aerobic exercise (VIAE) groups. Aerobic exercise was performed three times a week for 8 weeks. To verify the exercise effect, pre- and post- body composition, resting metabolic rate, and blood lipid profile were analyzed. RESULTS Weight and body fat decreased in both groups, and lean body mass and resting metabolic rate increased in the VIAE group. Blood TC, TG, and LDL-C decreased in both groups and HDL-C increased in the VIAE group. CONCLUSIONS In normal-weight obese women, vigorous-intensity aerobic exercise is more effective than moderate intensity aerobic exercise for improving body composition, resting metabolic rate and blood lipid profile.
PURPOSE This systematic review and meta-analysis aimed to assess the effectiveness of exercise programs in improving physical fitness among middle-aged adults in Korea. METHODS A literature search was conducted using KCI-registered databases on DBpia, RISS, and KISS up to September 21, 2023. The review followed the PICOSD framework (population: middle-aged adults; intervention: exercise program; comparison: did not participate in exercise program; outcome: physical fitness; study design: randomized controlled trials). Two researchers independently evaluated bias using the Cochrane Risk of Bias tool for randomized trials (RoB 2). The data was synthesized using the CMA 3.0 program, applying a random effects model to estimate the overall effect size using Hedges’g. RESULTS Out of 914 screened documents, 15 studies were selected, comprising 405 participants. The overall effect size for improving physical fitness was significant (g=0.994, 95% CI: 0.712–1.276). Sub-analysis indicated significant improvements in various components, including muscle strength (g=1.295, 95% CI: 0.909-1.682), muscular endurance (g=0.972, 95% CI: 0.637-1.308), cardiorespiratory endurance (g=1.092, 95% CI: 0.453–1.731), flexibility (g=0.883, 95% CI: 0.555–1.210), muscle power (g=1.421, 95% CI: 0.656– 2.186), and agility (g=1.854, 95% CI: 0.347–3.361) compared to the control group. An additional analysis focusing solely on women revealed a slight increase in effect size, although the order of effect sizes remained consistent across fitness components. CONCLUSIONS This meta-analysis confirms the effectiveness of exercise programs in enhancing physical fitness in middle-aged adults. The systematic review also highlights key considerations for designing exercise programs for this demographic. Future studies should aim to minimize bias and enhance the quality of reporting to ensure more robust results.
PURPOSE Players’ nonverbal behavior during a game may be expressed through selfregulatory and intentional processes, where nonverbal cues are strategically used to achieve specific outcomes. This study aimed to observe and explore the strategic and intentional nonverbal behaviors utilized by table tennis players. METHODS The study utilized a grounded theory methodology and involved purposeful sampling of ten adult table tennis players. Semi-structured face-to-face interviews were conducted. The collected data were analyzed using open, axial, and selective coding techniques. RESULTS The findings revealed that players’ intentional nonverbal behaviors are influenced by their confidence levels, physical condition, and perceptions of others’ nonverbal cues. Throughout this process, players underwent various emotional experiences, worked to maintain a positive mental state, and experienced changes in both their behaviors and psychological states, which impacted the flow of the game. CONCLUSIONS This study’s results provide valuable insights into the role of intentional nonverbal behaviors utilized by athletes during competitions. This suggests that understanding and incorporating intentional nonverbal behavior should be a key consideration in sports psychology counseling and psychological skills training.
PURPOSE This study aimed to explore the re-socialization process of college soccer players who rejoin college soccer clubs after dropping out. METHODS A case study approach was employed, and participants were selected using the snowball sampling method. Data were collected through in-depth interviews, participant observation, and literature reviews. The authenticity of the data was validated through triangulation, member checking, and peer debriefing. All research procedures were conducted following approval from the institutional review board. RESULTS The study revealed several key findings. First, participants faced numerous challenges during the re-socialization process into sports, including interpersonal, academic, and emotional difficulties. Second, distinctive features of the re-socialization process emerged, including the determination and effort required for adapting to university life, support from socialization agents within the university, and rapid re-socialization following dropout. Third, experiences within collegiate soccer clubs indicated low barriers to entry for former athletes, academic success through complementary relationships, a hierarchical culture familiar to student-athletes, and enhanced satisfaction in interpersonal relationships and a sense of belonging. CONCLUSIONS This study underscores the importance of institutional support that enables college athletes to participate in sports clubs, facilitating the successful re-socialization of athletes who have dropped out.
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 a Korean version of the Low Energy Availability in Females Questionnaire (LEAF-Q) by translating the original English version into Korean using cross-cultural translation guidelines and conducting a face validity assessment. METHODS Following structured cross-cultural translation guidelines, a provisional final version (Pre-K-LEAF-Q) was created through initial translation, synthesis of initial translations, back translation, synthesis of back translations, and expert committee review. Additionally, its face validity was tested with 30 female participants. RESULTS After completing the translation process, the expert committee comprehensively compared each translation to finalize the Pre-K-LEAF-Q. This version was crafted to ensure semantic, idiomatic, experiential, and conceptual equivalence. Among the 30 females who participated, three noted that certain phrases were unclear or awkwardly expressed. The expert committee reviewed these five comments from the face validity test and modified three of the phrases. CONCLUSIONS The K-LEAF-Q was developed through cross-cultural translation and face validity testing to suit the cultural and linguistic context of Korea. It is expected to be a valuable tool for Korean female athletes.
PURPOSE This study aimed to characterize the kinematic variables of stair climbing in adult women by analyzing the effects of varying heel heights on their climbing behavior. METHODS A total of 24 adult women (age: 22.08±1.28years; height: 160.43±4.30cm; weight: 54.10±6.39kg) participated in this study. All subjects wore the same type of high heels with heights of 1cm, 5cm, and 7cm while performing stair climbing on stairs measuring 18cm in height. Ten infrared cameras (200Hz) and ground reaction force sensors (1000Hz) were set up on the stairs, along with an 8-channel electromyography system (1000Hz) to analyze the maximum moments at each joint and the muscle activation during stair climbing. Data were analyzed using IBM SPSS Statistics version 27.0 (IBM., USA). All variables underwent the Shapiro–Wilk normality test, with repeated measure analysis of variance or the Friedman test applied based on the results. Post hoc tests were conducted using the LSD test or Wilcoxon signed-rank test. RESULTS Our study found four key findings. First, a significant decrease in maximum dorsiflexion, plantarflexion, inversion, and adduction moments of the ankle joint was observed with increasing heel height. Second, the maximum extension, adduction, and external rotation moments of the knee joint significantly decreased as heel height increased, while the maximum abduction and internal rotation moments significantly increased. Third, the maximum flexion, extension, and abduction moments of the hip joint significantly increased with higher heel heights. Fourth, muscle activity of the rectus femoris, vastus medialis, vastus lateralis, semitendinosus, and gastrocnemius decreased with increasing heel height compared to walking; however, muscle activity in the tensor fasciae latae increased. CONCLUSIONS The results of this study suggest that as heel height increases, the risk of injury may rise due to limited ankle use and increased moments in the knee and hip joints, potentially leading to muscle strength imbalances in adult women, particularly through the overuse of specific muscles.
