• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.162-169
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• 2020

This study was conducted from November 25 to December 4, 2019, to unmask differences in physical fitness based on the weight class of high school Ssirum elite-players. A total of 28 high school Ssirum elite-players were compared and analyzed by measuring physical factors (muscle strength/power, agility, anaerobic power, aerobic ability, flexibility, and isokinetic muscle function) by weight class. Data were analyzed using SPSS ver. 23.0. One-way ANOVA was used for comparison between groups. There was no difference by weight class in terms of grip strength, sit-ups, sergeant jump, long jump, flexibility, side step, and reaction time. Evaluation of back muscle strength revealed that the group with more than 100 kg had greater strength than lower weight categories, whereas it was lower in the sit-ups, 20 m shuttle run and the relative values anaerobic power. Considering isokinetic muscle function, no difference was observed between the groups of back muscle strength and knee joint. The results of this study indicate that amongst the high school Ssirum elite-players, there is no difference in muscle power, flexibility, agility, and anaerobic average power per body weight, isokinetic trunk strength, and knee flexion strength, when evaluated according to weight class.

• Journal of the Korean Data and Information Science Society
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• v.14 no.4
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• pp.903-913
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• 2003

The objective of the study is to develop a variety of different indices based upon the detailed data obtained through the computer input/analysis program developed recently. Through this new program, all the activities of players can be recorded on a real time basis and they can be analyzed statistically with different types of outputs. Therefore in this research, with the help of the database program, we will develop the indices for teamwork, goal making ability, offense/defense ability, individual player's contribution to the game, and various game related performances.

• 대한정형외과스포츠의학회:학술대회논문집
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• 2004.09a
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• pp.64-64
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• 2004

• Clinics in Shoulder and Elbow
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• v.22 no.4
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• pp.235-240
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• 2019

Ulnar collateral ligament injuries of the elbow are frequent among overhead athletes. The incidence of ulnar collateral ligament reconstructions (UCLRs) in high-level players has increased dramatically over the past decade, but the optimal technique of UCLR is controversial. Surgeons need to manage the patients' expectations appropriately when considering the mode of treatment. This article reviews current studies on the management of ulnar collateral ligament injuries, particularly in overhead athletes.

• Journal of the Korean Society of Physical Medicine
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• v.5 no.3
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• pp.341-350
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• 2010

Purpose : To provide information and data about the physical therapy service for planning future Olympic and other mass gatherings. Methods : To document the injuries sustained during the 2008 Beijing Olympic Games in a sample of patients visiting the physical therapy department of the Korean Olympic Committee. Athletes visited the physical therapy department in 2008 Beijing Olympic Korean delegation from 1 August through 22 August. Results : The sex ratio of athletes who visited physical therapy room was male 27.5%, female 72.5% and that number of case sports were higher Handball (26.2%), hockey (15.8%), archery (10.4%). The most prevalent injury of body parts was shoulder (15.1%), followed by the lumbar(14.2%), and the cervical spine (10.5%). Treatment modality had manual therapy(891), electrical therapy (584), ultrasound (461) and the number of taping were handball (47.8%), hocky (23.8%), judo (8.2%). Ankle (31.4%) was the most body parts of taping. Conclusion : Physical therapy in sport as a professional sports event to get their players to injury prevention and treatment. These results can be of help to optimize the strategies to prevent injuries and to treatment the injured athletes.

• The Journal of the Korea Contents Association
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• v.15 no.12
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• pp.550-559
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• 2015

We empirically examined the effect of sponsorship on firms' performance. Among many indices measuring a firm's performance, we focused on its revenue and revealed that the performance of players sponsored by the firm has a significant and positive impact on the firm's revenue. In light of transaction data on sports equipments from its importer, our paper makes the following primary contribution by empirically examining the short run effect of sports sponsorship. We believe our findings based on the field data provide strong implications for firms faced with similar decisions.

• Journal of Sport and Applied Science
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• v.6 no.1
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• pp.1-4
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• 2022

Purpose: The purpose of this study is to provide implications for virtual golf safety management in Korea through the literature review of current safety issues of virtual golf industry. Research design, data, and methodology: This study employed a qualitative approach to review prior studies and related documents presenting current safety perspectives of virtual sports facility management. First, the study reviewed the experiences of virtual golf players and safety criteria suggested from previous literatures. Second, two experts in sport facility management reviewed the manuscript including implications and provided their opinions including major implications and insights for virtual sport industry. Views of experts were added to the final manuscript. Results: This study found that installation standards and safety and hygiene standards by industry are enacted for the safety management of sports facilities, however, there is a need for standards to be adjusted because the contents are general, abstract, and lack detail, thus causing difficultly to secure effectiveness. Conclusions: For virtual golf courses, it is necessary to develop a safety inspection checklist that suits the characteristics of indoor virtual golf. In this line, safety criteria need to be developed with the consideration of characteristics of screen golf to establish an efficient safety management system and create a safe use environment.

• Fashion & Textile Research Journal
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• v.17 no.5
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• pp.800-814
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• 2015

This study develops baseball uniforms for amateur baseball players with excellent appearance and functional movement. This study selected a conventional baseball uniform and developed a new one for amateur baseball players with improved function and appearance based on previous research results. In case of developed baseball uniform materials, this study used polyurethane mixed fabric for the top to improve flexibility. A mesh material was used at the armpit, back, and bottom of the top, side line of pants and pockets to improve breathability. In addition, quilted material was added to the knee to improve durability and protection. For the patterns and design, this study used a gusset under the arm to assist in comfortable movement as well as reduced the length of the top and circumference of the hem to decrease unnecessary parts. For the pants, this study used a waistband gripper to avoid the top riding up, added darts behind the knees to bend comfortably, and added additional fabric inside the hem to prevent dirt. In addition, we reduced the width and length of the pants. Wearing evaluation was divided into appearance evaluation by experts and on-site-wearing test by baseball players. The wearing evaluation results for the developed baseball uniform indicated higher evaluations than a conventional baseball uniform in all sections as well as showed significant differences in all sections. The result of movement adaptability evaluation showed the highest satisfaction for 'the top does not ride up' and 'dirt do not get in'.

• Korean Journal of Applied Biomechanics
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• v.18 no.2
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• pp.29-39
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• 2008

This study was to provide for Tippelt technique which was a basic technique used in parallel bars. The program was applied to players for 8 weeks. Then it was analyzed by using 3Dmotion Analysis system to seek the difference between before and after using the program. Moreover establish the improvement and trait for newly made program. The program was made up of down-swing, up-swing and composite connection-phase training. Through down-swing training, shoulder angle made extension and chest closed quickly. As a result, players' performance have improved. Through up-swing training, legs kicking to vertical direction and trunk stood up fastly. As a result, players' performance have improved. When going upward, the center of mass must be in control not to have a lot of movement and hip angle extension using the bar is very positive coaching. When coaching composite connection in training from down-swing to up-swing, must have enough air phase time using center of mass vertically to have extension of leg. As a result, players' performance have improved by having increase of air phase time.

• Korean Journal of Applied Biomechanics
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• v.22 no.3
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• pp.349-356
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• 2012

This study aimed to assess the effects of progressive lumbar stability exercises and lumbar stability exercises on changes in the transversus abdominis muscle thickness and lower extremity muscle fatigue index in soccer players. Ten subjects were assigned to undergo training in each of the 2 groups, namely, the progressive lumbar stability exercise group and lumbar stability exercise group. Each intervention session lasted for 30 min, and 4 sessions were conducted in a week for 6 weeks for soccer players of S. University in Jeonnam, Korea. Changes in the transversus abdominis muscle thickness and lower extremity muscle fatigue index were measured using ultrasound and surface electromyogram. The results of the ultrasound measurement for the transversus abdominis muscle thickness indicated that progressive lumbar stability exercises were more effective than lumbar stability exercises. The results of the lower extremity muscle fatigue index measurements using surface electromyogram indicated that the fatigue index decreased in the progressive lumbar stability exercise group. Progressive lumbar stability exercise is believed to have put more workload during the shaking of the limbs, leading to increased stability and increased efficiency of the lower extremity muscle, thereby decreasing the fatigue index. Therefore, progressive lumbar stability exercises can be an effective measure for preventing injuries and improving the game performance of sports players by increasing the transversus abdominis muscle thickness and decreasing the lower extremity muscle fatigue index.