PURPOSE This study aimed to identify movement pattern differences in the running of youth soccer players with and without lateral ankle sprain (LAS) histories. METHODS A total of 12 participants were recruited and assigned to the LAS group or the control group. All participants were assessed for anthropometric data, and they filled in the subjective ankle function questionnaires. Then, reflective markers were attached to their bodies, and they were instructed to run at the preferred speed on the 9-m runway thrice. 3D joint angles for ankle, knee, and hip joints were exported, and their mean values and 95% confidence intervals were calculated. Ensemble curve analysis was conducted to compare running kinematics between the groups. RESULTS The LAS group exhibited fewer dorsiflexion angles and more inversion angles compared to the control group. Excluding the dorsiflexion deficits and more inverted ankles, there were no significant differences between the groups. CONCLUSIONS Although the ankle kinematic patterns found in this paper are not considered LAS risk factors, it will be able to identify precise LAS risk factors with prospective design (e.g., lower extremity movement patterns) as well as intrinsic risk factors.
PURPOSE This study comprehensively compared the perception and interaction of player–coach in the development of mental toughness in soccer. METHODS Data were collected through semi-structured individual interviews from 12 participants (6 athletes and 6 coaches), analyzed using the grounded theory by Strauss and Corbin, and they were compared to the group of athletes and coaches, respectively. RESULTS The following results were obtained: (1) Both athletes and coaches recognized that the experience of coping with the pressure present in competition was a central phenomenon in the development of mental toughness. (2) Regarding the situation and condition that lead to coping with pressure, the athletes emphasized the individual's goal orientation in the context of competitive situations and environmental conditions, while the coaches emphasized the athletic attitude toward competition and development in childhood. (3) The athlete–coach interaction was identified as an intervening condition affecting the experience of coping with pressure. (4) As the action–reaction strategy for the development of mental toughness, the optimistic thinking was emphasized for athlete and achievement-oriented thinking for coach; thus, it differed in the characteristics of mental toughness. CONCLUSIONS This study presented the results of an integrated comparison of mental toughness, which can vary depending on the contextual specificity (soccer) and the subject of perception (athlete– coach), especially indicating the importance of the player–coach interaction, which can contribute to the strategy to be used in mental toughness development.
PURPOSE The purpose of this study was to verify the support effect of muscle activity and stability according to walking conditions (Level, Ramp, and Stair) before and after wearing a suit with a 12kg heavy weight load. METHODS To accomplish the purpose of the study, subjects (n=10) underwent Electromyography (EMG) measurement under the same conditions for 10 different muscles, and COP width was calculated through foot pressure measurement. The experimental movement was level walking, Ramp walking, and stair walking, each carrying a 12kg load, and measured once before and after wearing a wearable suit. RESULTS Electrolyography (EMG) measurement revealed a significant difference in the average EMG values of muscle activity of R.RF in level walking(p<.05), R.RF and L.RF in ramp walking(p<.01), L.RF and L.BF in stair walking (p<.05). COP width measurement revealed a significant difference in the reduction of COP width in all walks (level walking, ramp walking, stair) (p<.05, p<.01, p<.001). CONCLUSIONS The effects of wearing a wearable suit are as follows. First, the wearable suit has a significant effect of assisting the Rectus Femoris muscle. Second, there is a gait stability effect by wearing a wearable suit.
PURPOSE This study aimed to identify the underlying dimensions of brand (professional sport team) authenticity and to develop a valid, reliable scale to measure these dimensions. METHODS A pool of 67 potential items was drawn through a literature review, content analysis, qualitative research (n=43), and an expert evaluation. The identified items were subjected to exploratory factor analysis (n=248) and confirmatory factor analysis (n=285). In addition, multiple regressions were conducted to examine the criterion validity of the scale. RESULTS The results showed that the brand authenticity scale for professional sport teams consists of 42 items representing 8 dimensions: continuity, originality, quality commitment, heritage, symbolism, credibility, stakeholder-related integrity, and consumer-related integrity. The study has proven evidences of internal consistency and convergent, discriminant, and criterion validity of the scale. CONCLUSIONS The findings suggest that the scale developed in this study offers a vital foundation to understand the structure of brand authenticity in the context of sport fans and its impact on sport consumer behavior.
PURPOSE This study aimed to investigate the effects of COVID-19 on elite youth athletes by investigating their activities and eating habits before and after the COVID-19 pandemic. METHODS This study included 917 elite adult athletes from 19 sports and were grouped into 6. The questionnaire included items regarding demographics, physical activity, sleep, and eating habits before and after COVID-19. A total of 44 questions requiring subjective short answers were included. Statistical significance was set at p< 0.05. RESULTS After COVID-19, vigorous and moderate activity decreased across all sports; however, light activity increased in almost sports. Time spent sitting increased across all sports. The difference in the number of meals consumed varied among sports, and the number of competitions decreased in all sports. CONCLUSIONS The COVID-19 pandemic appears to be finished but has not ended yet. Athletes must determine the best way to maintain their physical, physiological, and psychological states close to their original abilities. Determining this will provide the greatest impact on the return of athletes after COVID-19; this study will be helpful.
PURPOSE The purpose of this study was to develop the estimating equations for 4 types of Wingate Anaerobic test setting. METHODS 80 male elite athletes performed 4 trials of the Wingate Anaerobic test by each type. Subjects were conducted the retest one week later. Data collected from the Wingate Anaerobic test included mean power, peak power, and power drop for 30s were measured. Coefficient of correlation was used for validity of type 1(DOS version) and the other types(ver. 2.24, 3.3.0, and 3.2.1). Pearson’s correlation coefficient was used to examine the reliability of test and retest. Simple regression analysis was used for calculating the estimating equation. RESULTS There was significant correlation for absolute value(Watt, p<.01) and relative value(Watt/kg, p<.01) of mean power, absolute value(W, p<.01), relative value(Watt/kg, p<.05), and power drop rate(%, p<.01). Test and retest reliability was excellent for all test variables(p<.01). CONCLUSIONS From the all results, the estimating equation was calculated to convert all outputs from each type to the other types of the Wingate Anaerobic test setting. These findings suggest that the estimating equations are compatiable to 4 types of Wingate Anaerobic test setting.
PURPOSE This study aims to help improve performance by comparing and analyzing the kinematic variables for each upper and lower extremities segment when two groups of players attack the national women’s fencing players in a match situation. METHODS This study divided the movement time, movement time ratio, Fente step length change, angle factor at each event, and velocity factor of the fencing point of a sword at each event into the Olympic medalists’ group (Group A) and the international competition winners group (Group B) during the fencing Marche Fente. An independent t-test was performed for each factor, and the results were compared. RESULTS As a result, the difference between the two groups in movement time was statistically significant in the front of the foot in the velocity factor. However, no statistical significance was found between the two groups in the front angle of the trunk, the elbow angle, and the knee angle. CONCLUSIONS This indicates that group A and group B are both outstanding players with the best performance, so they are similar in the details of the movements except for the very slight difference in time and velocity. Therefore, the average of the result values of the joint angle will be a feedback index for fencing beginners or education subjects who are now starting to fencing.
Purpose This study is to investigate the human rights violations of Semi-professional team athletes. Methods The subjects of the survey were 4,069 people in total of 56 sports athletes from teams. than, 1,251 athletes who agreed to provide personal information (635 males and 616 females) were sampled. The survey tool consisted of a total of 76 questions asking about violence, sexual violence, and general characteristics of semi-professional athletes. Results were frequency analysis, cross-analysis, and multiple response analysis. Results Despite being an adult athlete in the semi-professional Team's Workplace Sports Team, life controls were severe in the sports team and human rights violations, such as verbal and physical violence, were widely observed, and sexual harassment and sexual violence were not small. The main perpetrators were the leaders and senior players, and the venue was the training ground. The players were in an environment where they were forced to respond passively for fear of hierarchical, collective atmosphere and personal disadvantages, and were blind spots for labor rights in terms of contracts and treatment. Conclusion To human rights violations of semi-professional athletes as the structural problems of the Korean sports. It is necessary to strengthen human rights education by the workplace movement department and conduct regular human rights surveys, and legal institutionalization to establish a disciplinary information system for perpetrators. In addition, by enacting guidelines for human rights in the sports world, a system should be prepared so that the victims can actively express their intentions.
Purpose The purpose of this study was to empirically analyze the relationship between a sports-for-all club members self-esteem and self-determination, conspicuous consumption, ethical consumption, product identification, positive word of mouth & repurchase intention through structural equation model analysis. Methods For this purpose, this study set 279 members at the nine sports-for-all club located in national capital region as the research subjects. In an effort to verify the proposed structural model, this study used SPSSWIN Ver. 23.0 and AMOS 18.0. Results First, self-esteem had a positive effect on conspicuous consumption. Second, self-determination had a positive effect on ethical consumption. Third, conspicuous consumption had a positive effect on product identification. Fourth, ethical consumption had a positive effect on product identification. Fifth, product identification had a positive effect on positive word of mouth. Sixth, product identification didn’t had a positive effect on repurchase intention. Seventh, positive word of mouth had a positive effect on repurchase intention.
Purpose The purpose of this study was to understand student athletes coaches’ occupational challenges from the dual perspectives(social relationship-political system), to analyze the nature of the coping strategies for the challenges, and to provide implications for building a human rights-friendly student athletes club culture. Methods Five coaches(n=5, average career length= 19.2 years) were selected through purposeful sampling. Data were collected by semi-structured interviews with participants. The collected data were inductively analyzed(Patton, 2015). Results First, participants struggled with informal roles demanded by the interested parties(principals, athletic directors, parents, and university coaches). Second, the system for protecting student athletes’ learning rights, the 52-hour work system and the human rights system added difficulties to the coaches’ work environment. Third, the disharmony between interested parties’ demands and government agencies’ institutional ideals pushed participants to choose anti-institutional, un-ethical, un-educational coping strategies. Conclusion The findings suggest that the government, academia and the community should empower coaches as ‘the subject of reform’ who can solve the problem together rather than regarding them as ‘the object of reform.’ Furthermore, this conclusion is expected to provide implications to alleviate disharmony between interest parties’ demands and government agencies’ systems.’
