• The Korean journal of sports medicine
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• v.36 no.4
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• pp.180-188
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• 2018

Purpose: The purpose of this study is to identify bilateral differences of physeal closure of the lateral compartment of the elbow in osteochondritis dissecans (OCD) and related factors with premature physeal closure. Methods: Initial radiographs of the bilateral elbows in 40 baseball players with OCD (group I) were reviewed for the status of physeal closure of the lateral compartment; capitellum, radial head, lateral epicondyle. Forty baseball players with medial epicondylar apophysitis (group II) were enrolled as a control. Relative status of physeal closure of dominant elbow was defined as early, same, and delayed. Bilateral differences of the status of physeal closure were analyzed between groups, and according to the radiographic stages, extent of the lesions and demographic factors in group I. Results: Significant early physeal closures of dominant elbows were identified in group I in capitellum (group I, 55%; group II, 3%), radial head (group I, 53%; group II, 3%), and lateral epicondyle (group I 37%; group II, 5%). In group I, advanced stage and extended lesion showed early lateral compartment physeal closure especially in capitellum and radial head, and players with longer career length and limitation of motion showed early closure. Conclusion: Over the half of the adolescent baseball players with OCD demonstrated early radiocapitellar physeal closures of dominant elbow in initial presentation. Because premature physeal closure contributes to the development of arthritis without appropriate radiocapitellar remodeling, early detection of OCD is essential for prevention of arthritis and successful conservative management.

• Journal of the Korean Society of School Health
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• v.7 no.2
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• pp.115-123
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• 1994

• 대한정형외과스포츠의학회:학술대회논문집
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• 2004.04a
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• pp.3-4
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• 2004

• Korean Journal of Applied Biomechanics
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• v.32 no.3
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• pp.69-79
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• 2022

Objective: The purpose of this study is to analyze trends related to sports and artificial intelligence (AI) to understand the trends and how they change according to time, and to establish methods to apply AI in sports. Both macro and micro perspectives related to sports utilization of AI were analyzed. Method: In this study, after analyzing and discussing various information related to the use of artificial intelligence in the sports through a search of academic journals, papers, books, and websites published recently at nationally and internationally, the application plan of artificial intelligence in the sports field was presented. Results: 1) Motion analysis technology using artificial intelligence is effective in sports where posture is important, and if it provides systematic feedback and training methods, it can help improve performance. 2) The introduction of a sports referee judgment system using artificial intelligence is expected to improve performance by restoring factual judgment and objective fairness in sports games. 3) Artificial intelligence will provide coaching staff and players with a variety of information to help improve performance through systematic coaching and improving feedback and enhanced training methods. 4) It is judged that artificial intelligence-related to sports ethics, sports ICT, sports marketing, sports prediction, etc. We think that based on the current AI research trends will have a positive impact on all sports-related areas, helping to revitalize sports. Conclusion: Motion analysis technology using artificial intelligence, sports referee judgment system, coaching using artificial intelligence, and artificial intelligence are judged to have a positive effect on all sports-related areas and help revitalize sports.

• Journal of Industrial Convergence
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• v.18 no.4
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• pp.87-92
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• 2020

Recently, several sporting events have been canceled or postponed due to the influence of COVID-19's imposed social distancing in life, or are being played without spectators. As a result, the market for sports products has been stagnant, and many are experiencing difficulties. To get over it, sports market players are exploring various new markets such as online fan services and online sales. Therefore, this study proposed a way to manage the authenticity of sports-related products. The block structure, system flow, and network model were designed and prototypes were developed accordingly. Experts were invited through the derived method to conduct a target group interview (FGI) to evaluate the reliability and stability of the transaction process, the reliability and stability of payment, the tracking of accidents, and the reliability and stability of the system. Through this study, consumers can have reliability when trading sports-related products such as goods, favorite items, and sign balls.

• Journal of the Korea Convergence Society
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• v.10 no.6
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• pp.317-324
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• 2019

The purpose of this study was to investigate the effects of sports massage in the recovery period after maximal exercise on heart rate(HR), oxygen uptake(OU), and blood lactate(BL) of ssireum players. The participants of this study were consisted of 24 ssireum players in university team(UT) and business team(BT). The first experiment had a rest recovery period for 20 minutes after the maximal exercise, and the second experiment gave a sports massage was performed the order of abdominal, waist and lower legs in a prone position for 20 minutes. The interaction effects of massage treatment and recovery period in HR showed a higher recovery ability in both the UT and BT when the massage treatment was given 10 minutes after recovery than when it was not given. The main effects of recovery period showed in all variables of HR, OU, and BL. The main effects of BL on massage treatment was significant low in both the UT and BT when the massage was given. And, the main effects of OU was significantly lower only in the BT. In conclusion, compared sports massage treatment on ssireum players after maximal exercise positively affected the recovery mechanism of HR, OU, and BL than the rest recovery method.

• Korean Journal of Applied Biomechanics
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• v.13 no.3
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• pp.151-162
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• 2003

The purpose of this study was to investigate the frequency of sports injury among Korean junior elite golf players. The survey was made through the questionnaire which consist of eight categories and 280 valid answers were used to perform frequency analysis. The results indicated that 197 out of 280 participants experienced golf injuries (30%: during a game, 70%: during a practice) and 70% of them also experienced injuries within a year. The frequency analysis for the site of injury has shown that back was the most vulnerable area for all players(33%), followed by the right wrist, left shoulder and elbow for male players. Among female players, left wrist was the second weak site of injury, followed by the right wrist, right thoracic spine, and left shoulder. A few of them also have shown abnormal symptoms of ruptured lumbar disk, scoliosis, and lordosis and these injuries might be caused by the lack of flexibility and the fatigue due to over-practice. High frequency of wrist injury also demonstrated that excessive chopping or punching shot and poor environmental course conditions may cause this injury to be common. Overall, lack of warm up time, lack of strength and flexibility, and excessive amount of practice were the major reasons of injury for the junior elite golfers in Korea. The study also proved that these young Korean golfers actually had more chances to be faced with the injury than average. Thus, it is necessary to develop systematic and scientific methods of training, and prevention, treatment of these injuries with medical professionals.

• Korean Journal of Applied Biomechanics
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• v.34 no.1
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• pp.1-8
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• 2024

Objective: The aim of this study was to identify the biomechanical determination factor for improving club head speed during the driver swing in male golf players. Method: Twenty-seven golf players were participated in this study. Eight motion capture cameras (250 Hz) and two force plates (2,000 Hz) were used to collect peak angular velocity and ground reaction force data. It was performed stepwise multiple linear regression analysis and alpha set at .05. Results: The peak plantar flexion angular velocity of the left ankle joint and the peak adduction angular velocity of the right shoulder joint were statistically significant. The peak plantar flexion angular velocity of the left ankle joint and the peak adduction angular velocity of the right shoulder during downswing. Conclusion: It is suggested that applying body conditioning training aimed at improving related body functions to increase maximum plantar flexion angular velocity in the left ankle joint will be effective in improving club head speed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3839-3847
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• 2009

This study presents a revitalization of the professional leagues through the identification of the problem based on analyzing the domestic professional sports business environment. The development plan for emerging problem is present along with guidelines that are appropriate for local environment and situation for league revitalization. First, the creation of a variety of marketing opportunity and integrated marketing strategy must be accompanied by the development for generating of the professional sports league's revenue. Second, Marketing of a player's potential should be developed. and utilized. Third, the domestic players and foreign players salary cap celery cap placed on the proportion of salary should be lower. Finally, Youth Club, based on the activation of a growing base should be made.

• Journal of Smart Tourism
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• v.3 no.1
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• pp.9-21
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• 2023

This study investigated whether the Point of attachment (POA) theory can be used to measure the consumption intention on go and watch offline eSports games. The admiration for players, social interaction, and on-site consumption requirements for viewing offline eSports competitions are prioritized. In addition, eSports fans in various regions may have distinct consumption concepts and consumption patterns. Thus, this study surveyed China (n = 156) and South Korea (n = 127) eSports fans who subjectively perceive themselves to be fans of eSports player(s) and who have observed at least one offline eSports game. The results demonstrate that player attraction and socialization have positive and significant effects on offline consumption factors. There is no correlation between previous consumption behavior and satisfaction, but dining shows a significant positive effect on satisfaction. Moreover, there is a strong relationship between satisfaction and future attendance intention. In addition, effect of eSports fan attachment on future visit intentions are measured and there is no correlation between the two variables. The front end of the path in the new model's varied between Chinese and Korean supporters. Finally, theoretical and practical implications of this study are discussed.