• Journal of Digital Convergence
• /
• v.14 no.12
• /
• pp.545-553
• /
• 2016

The purpose of this study is finding out the effect of self-confidence and stress on University Judo Athletes performance. For this study, 249 participants of University Judo team athletes were sampled using convenient sampling method. To process data, AMOS 23.0 and SPSS PC+23.0 Version statistical program for WINDOWS were used and frequency analysis, confirmatory factor analysis, reliability, correlations and structural equation model analysis were conducted. Through such processes and method of the study as above, the results of this study are as follows. Firstly, it was discovered that self-confidence had static influence to athletes performance. Secondly, the stress did not affect the athletes performance.

• Journal of Nutrition and Health
• /
• v.51 no.2
• /
• pp.121-131
• /
• 2018

Purpose: This study was aimed to assess selenium and zinc status in female collegiate athletes and their relationship with dietary intake. Methods: Female collegiate athletic groups of judo and aerobics, and healthy sedentary collegiate females were recruited for this study and their serum selenium and zinc contents were measured by the neutron activation analysis (NAA) method. In addition, the dietary intake of subjects was measured using the two days 24-hour recall method. Results: Serum selenium in judo athletes was $10.7{\mu}g/dl$, which was significantly lower than that of aerobic athletes ($12.2{\mu}g/dl$), but not different from that of the sedentary group ($11.4{\mu}g/dl$). Additionally, serum zinc levels were $96.1{\mu}g/dl$ and $90.2{\mu}g/dl$ in aerobic and judo athletes, respectively, which did not differ significantly. Moreover, dietary selenium and zinc intake of the athletic groups did not differ significantly from that of the sedentary female group. Overall, 33.3% of the serum selenium concentration variation was explained by the intake of vitamin E, selenium and saturated fatty acids, while 14.7% of the serum zinc level variation was explained by the intake of saturated fatty acids. The strongest dietary indicator for serum selenium and zinc levels was saturated fatty acids intake. Conclusion: Judo athletes appear to have lower selenium status than aerobic athletes, suggesting different body selenium status according to sport type. To maintain body selenium and zinc levels, the dietary intake of saturated fatty acids should be decreased.

• The Journal of the Korea Contents Association
• /
• v.20 no.3
• /
• pp.661-670
• /
• 2020

The purpose of this study was to investigate the incidence of sports injury and trend of incidence pattern of national judo athletes. The research method was analyzed based on the records of all injuries experienced by national judo athletes during training and competition for 9 years from 2008 to 2016. A total of 20,345 sports injuries requiring physical therapy were 10,768 (52.93%) for women, 9,577 (47.07%) for men, lower extremities 9,688 (47.62%), upper limbs 5,807 (28.54%), and trunk 4,850 (23.84%) and knee-related injuries (27.82%) occur more frequently than other injuries. Shoulders, feet and back were more frequent in male athletes, and ankle, neck and hand injuries were more common in female athletes. Using the binomial trend line, the trend of the decrease of sports injuries in each area was shown. However, infrequent injuries such as hands and hips tend to increase gradually. The results of this study are expected to be used as a training program for judo athletes' sports injury and basic data.

• The Journal of the Korea Contents Association
• /
• v.20 no.3
• /
• pp.678-686
• /
• 2020

The purpose of this study was to compare the physical and psychological functioning by sex, weight and age in Judo athletes. The 124 participants; high school students, college students, and team players. They used physical tests to measure physical examinations by self-describing Knee injury and Osteoarthritis Outcome Score test, Foot and Ankle Outcome Score test, and Oswestry Disability Index, and psychological tests such as Profile of Mood Test, Athletes' Self-Management Questionnaire, and The Athletic Coping Skills Inventory-28, to examine the effects of physical and psychological functions of sports athletes. The physical tests of sex showed differences in knee and back, psychological tests of sex showed differences in mood state, self-management, and athletic coping skills. As a result of physical examination by weight, there was a difference in knee pain and sports items, psychological tests showed that there was a significant difference in mood state except for vitality. Physical examination by age showed differences in knee, ankle, and back. As a result of age-based psychological test, mood state test showed difference in all items except tension and vitality. There was a significant difference only in the items of physical management in self-management test. The results of this study are expected to be used as a basic data for sports injury training and medical technology development by sex, weight and age of Judo athletes.

• Journal of Digital Convergence
• /
• v.18 no.12
• /
• pp.607-614
• /
• 2020

The purpose of this study is to analyze the penalty types and characteristics of world judo players. Using a total of 19,889 penalties in 9,737 matches at the World Judo Grand Prix, the team draws a difference in the types and time of fouls according to gender, weight class and time. Results Both foul play and warning showed gender differences, and both men and women affected warning rates in weight class and time classification. In addition, fouls caused by non-combat behavior and camouflage attacks have a forward direction of time, and a low time of fouling by heavyweight athletes. Judo athletes and leaders expect to be used as basic data based on scientific data, such as training, skills, tactics and motivation, taking into account the characteristics of the foul type. Requires follow-up studies of scoring relationships and winning factors.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.16 no.4
• /
• pp.2527-2536
• /
• 2015

This study of the data of the high school judo player is subject to induction leader leadership athletes to analyze the impact on the player satisfaction and performance - a man of 290 people 121 people (41.7%), female 169 people (58.3%) was used as a target sample of the study. Behavioral training and instruction to improve player satisfaction for the leadership of the induction leadership, democratic behavior, social support behavior, reward positive behaviors, and configure the survey on the leaders of the overall leadership behavior. The results showed that leadership is influencing the player satisfaction, appeared to reap good results in performance enhancement, the leader of the social support behavior, influenced by the order of the overall behavior of the leader, the higher the better player satisfaction will reap the results. In addition, the director of leadership training and instruction of the leaders in the impact on the play ability behavior, democratic behavior, social support act, the overall behavior was found to affect the performances. Therefore, if the progress is erected lead dozens of leaders exercise planning and career planning under an agreement rather than a coercive players and make a lot of good results to enhance the player experience and improve performances.

• Journal of the Korea Convergence Society
• /
• v.11 no.4
• /
• pp.49-54
• /
• 2020

The purpose of this study was to investigate the correlation between sports incidence and heart rate variability in nationa lfemale judo athletes. Participants measured heart rate variability using the Autonomic Nervous System(SA-6000). Based on the average incidence of injury, sports injury incidence was classified into upper and lower groups. In addition, Pearson's Product Moment Correlation was performed to examine the correlation between the independent T-test, the number of sports injuries, and the heart rate variability. Heart rate variability was significantly different in total power and low frequency, and there was also significant difference in otal power and low frequency in the correlation analysis of heart rate variability according to the number of sports injuries. These data are expected to be useful as basic data for developing prevention injury programs.

• Proceedings of the Korean Nutrition Society Conference
• /
• 2003.05a
• /
• pp.172.1-172.1
• /
• 2003

• Journal of the Society of Naval Architects of Korea
• /
• v.29 no.2
• /
• pp.92-102
• /
• 1992

Prediction of energy absorption for bow structure is important for a design of protective structures against collision. For the crushing behaviour of basic element of energy absorption, the plastic mechanism method is applied. The ship's crushing strength of bow section is obtained by summing the energy dissipated in all individual elements. The theoretical predictions are compared with experimental results for ship's bow models published with experimental results for ship's bow models published in the references, and it is observed that the present prediction method of crushing strength correlates well with the experimental results.

• Journal of Korean Orthopaedic Sports Medicine
• /
• v.8 no.1
• /
• pp.51-55
• /
• 2009

Volar rotatory dislocation of the proximal interphalangeal joint(PIP) of the finger is rare. We report a female judo player who had volar rotatory dislocation of the PIP joint of the middle finger. She had dislocation of PIP joint total 4 times. At operation, the central tendon was identified as being distension, with the ulnar collateral ligament ruptured. The ruptured ulnar collateral ligament was interposed within the joint. The ruptured ulnar collateral ligament was repaired and extensor expansion was repaired. At last follow-up, she didn't have recurrent dislocation during judo. Accurate diagnosis, early intervention and progressive rehabilitation of this injury are very important as other dislocations.