• Journal of Plant Biology
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• 제19권2호
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• pp.49-61
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• 1976

A survey was conducted on the vegetation of Judo and Gamagseum in warm temperate zone of Southern Korea. They are covered with natural vegetation, evergreen forest dominated with Castanopsis cuspiadata in Judo and Machilus thunbergii in Gamagseum. Judo is a small island, ca. 1.75 ha, located within the Wando port. Since the flora of Wando including the Judo was reported in 1924, some investigator have reported evergreen trees of Judo. But the list of plant species of Judo is still unavailable. Gamagseum, located at the 15km morth of Judo, is a small island, ca. 1.45 ha, cosisting of two islands, Dae-o-do and So-o-do in low tide, and the report of its flora and any other survery on its is almost none. The vegetatons of Judo and Gamagseum are an example of natural forest vegetation occured rarely in warm temperate zone because of human disturbance in the southern coast zone of the Korean Peninsula. However, the ecological study of those vegetation has not ever been made, and the ecological or plant geographical situations of their vegetation is not clear. To determine the vegetation type, listing of plant species in the islands, calculation of basal area of trees over DBH=4.5cm, Raunkiaer's life form, leaf size class, Pte.-Q and etc., were studied. Total plant species of Judo was 110 species and that of Gamagseum was 99 species. In Judo, Castanopsis cuspidata was 1384 individuals among 2359 individuals over DBH=4.5cm, and in Gamagseum, Machilus thunbergii was remarkably abundant and Castanopsis cuspidata could not be found.

• 생명과학회지
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• 제14권4호
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• pp.573-576
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• 2004

The purpose of the present study is to investigate the lipid peroxidation, creatine kinase activity and cortisol hormone levels following the training intensity in elite judo players. Six elite Judo players participated in the experiments (3h repetition judo program), which include stretching, judo skill practice and cool down without recess. Blood sampling were taken at the judo gymnasium at the time of resting, 1h training, 2h training, 3h training, 2h recovery, and 24h recovery time and this were analyzed for CK, MDA and Cortisol levels. The results obtained were analyzed via repeated measures of ANOVA using SPSS package program (ver.10.0) and a value of p<.05 was considered statistically significant. The results from this study were as follows. In the CK levels, which reflect the contribution of creatine phosphate and muscle damage degree, there was a significant difference (p<.05) after judo training in every period. Recovery 24h showed the highest level. In the MDA levels, which reflect lipid peroxidation, there was a significant difference (p<.05) after judo training. Recovery 2h showed the lowest level. In the cortisol hormone levels, which reflect stress status, there was a significant difference (p<.05). In this study, we can conclude that For the trained athletes, MDA level was lower at the time of exercise compare to the other period, this is caused by the increased antioxidant defence mechanism.

• 한국컴퓨터정보학회논문지
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• 제25권10호
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• pp.203-209
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• 2020

본 연구는 중학생의 유도 생활체육 참여동기가 운동몰입 및 심리적 행복감에 미치는 영향을 규명하기 위한 목적이 있다. 본 연구의 목적을 규명하기 위하여 2020년 1월 18일~20일(3일간) 강원도 동해시에서 열리는 2020년 생활체육 전국유도대회에 참여한 중학생 270명을 대상으로 하였으며 내용이 부실하거나 신뢰성이 없다고 판단되는 설문지를 제외한 총 253부를 사용하였다. 본 연구의 결과를 제시하면 다음과 같다. 첫째, 중학생의 유도 생활체육 참여동기는 운동몰입에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 중학생의 유도 생활체육 참여동기는 심리적 행복감에 정(+)의 영향을 미치는 것으로 나타났다. 셋째, 중학생의 유도 생활체육에 따른 운동몰입은 심리적 행복감에 정(+)의 영향을 미치는 것으로 나타났다. 따라서 일선 현장의 생활체육지도자들은 단순 유도기술 뿐만 아니라 학생들의 인성과 리더십을 향상 시킬 수 있는 구체적인 방법이나 프로그램을 개발하여 서로 간의 의사소통이 긍정적이고 원활하게 이루어질 수 있도록 노력을 해야 할 것으로 사료된다.

• 한국CDE학회논문집
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• 제15권5호
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• pp.383-392
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• 2010

The purpose of this study is to develop three Judo-doll systems for enhancement of Judo's performance. Traditional Judo training requires a human training partner. Unfortunately it is not always easy to find one. Multifunctional Judo-doll training system has therefore been developed, and is described here. The system consists of a dummy, a power generating mechanism, and kinematic links. The power-generating mechanism generates forces similar to those of a human, by adjusting deadweights and controlling powderbrake's forces. The powderbrake force is controlled by the microprocessor according to the exercise scenario. The kinetic links, which mimic a human training partner's motions, has been developed based on a $Vicon^{TM}$ system's analysis of the movement of human training partners. This mechanism whose name is "L link-wire" consists of L type links, wire, roller, and dead weight. This mechanism generates the force that leads the link to the neutral position regardless the link is pushed or pulled. The lifting mechanism that lifts the doll when the one-armed shoulder throw skill is applied is also developed. A 32-bit microprocessor controls the whole system; it reads the loadcell data, controls the electromagnetic force, and communicates with a PC via Bluetooth. The training history, including loadcell data, date, and training time, is stored in the PC for analysis. This training system can be used to enhance the Judo performance of any self training player.

• 한국응용과학기술학회지
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• 제35권1호
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• pp.55-61
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• 2018

The purpose of this study was to analyze the biomechanical differences of lower extremity joints of the frontal plane during sidestep cutting in male and female Judo athletes. In the knee and hip joint, the female group showed a smaller angle than the male group at the time of IC(initial contact). But peak knee joint adduction moment of female group was greater than male group(p<.05). Therefore, female Judo athletes were more likely to injure their knees at the point where their initial foot contacted the ground than male athletes during sidestep cutting.

• 한국운동역학회지
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• 제17권2호
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• pp.197-205
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• 2007

The purpose of this study is to analyze the muscle activations and Ground Reaction Force(GRF) in university judo players, and provide the guide of training in Judo. Using surface electrode electromyography(EMG), we evaluated muscle activity in 5 university judo players during the Judo Uke Movements. Surface electrodes were used to record the level of muscle activity in the Tibialis Anterior, Rectus Femoris, Elector Spinae, Gluteus Maximus, Gastrocnemius muscles during the Uke. These signals were compared with %RVC(Reference voluntary contraction) which was normalized by IEMG(Integrated EMG). The Uke was divided into four phases : Kuzushi-1, Kuzushi-2, Tsukuri, Kake. The results can be summarized as follows: 1. The effective Uke Movements needs to short time in the Kake Phase 2. The Analysis of Electromyography of Uke Movements in Supporting Leg; TA(Tibialis anterior) had Higher %RVC in the Kuzushi Phase, RF(Rectus Femoris) had Higher %RVC in the Tsukuri Phase, GM(Gluteus Maximus) had Higher %RVC in the Kake Phase 3. The ground reaction force for Z(vertical) direction was showed increase tendency in Kuzushi phase, Tsukuri phase and decrease tendency in Kake phase.

• 한국식생활문화학회지
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• 제10권5호
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• pp.449-455
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• 1995

This study was undertaken to investigate dietary status, food habits, and nutritional knowledge of university students majoring in judo (n=239) and to evaluate the effect of dietary behavior on their athletic activities. Mean daily dietary intakes (3,854.0 kcal) were similar to mean daily energy consumptions (3,975.5 kcal). Average daily intakes of most vitamins and minerals were higher than Korean Recommended Dietary Allowances except for the intake of vitamin A. Self-confidence on judo affected dietary behavior of the subjects: Subjects who had more self-confidence on judo showed more interest in good nutrition and concerned more about foods which could promote their athletic activities. Many side effects were manifested after sudden weight control for judo competition during school days. Therefore, it is suggested that good education on nutrition is necessary not only for athletic students, but also for coaches and trainers of the students. Ten weeks of education on nutrition significantly improved both food habits and nutritional knowledge of the subjects. Food habits were positively correlated with self-confidence on judo. Therefore, it is suggested that improvement of food habits through good education on nutrition would be helpful to improve athletic activities of the students.

• 디지털융복합연구
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• 제14권12호
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• pp.545-553
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• 2016

본 연구는 대학유도 선수들의 자신감과 스트레스가 경기력에 미치는 영향을 규명하는데 목적이 있었다. 이러한 연구 목적을 달성하기 위한 연구대상은 대한유도회에 등록된 대학선수를 모집단으로 설정하고 8개 대학 유도선수 249명을 편의표집방법을 이용하여 수집하였다. 수집된 자료는 IBM SPSS Statistics 23.0과 IBM AMOS 20.0 통계 프로그램을 이용하여 빈도분석, 확인적 요인분석, 신뢰도 분석, 상관관계 분석 그리고 구조방정식모형 분석을 실시하였다. 이러한 과정을 통해 얻어진 결과는 다음과 같다. 첫째, 대학유도 선수들의 자신감은 경기력에 영향을 미친다. 둘째, 대학유도 선수들의 스트레스는 경기력에 영향을 미치지 않는다. 본 연구는 유도선수의 경기력에 영향을 미치는 심리적 요인에 대한 결과를 제시하며, 이에 대한 교육의 필요성 및 중요성을 기술하였다.

• 국제물리치료학회지
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• 제9권4호
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• pp.1669-1675
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• 2018

The present study aimed to investigate rapid weight loss (RWL) and consequent physical and psychological challenges among judo athletes at the national athlete training center in 2017. The following results were obtained. Judo athletes used weight loss methods such as "gradually reduce meal portion," "skip meals," "limit water intake," "wear sweat suit for training," and "use sauna," and had physical and mental distress from such unhealthy weight management practices. Information about weight loss was obtained from "colleagues or senior athletes," "Internet," and "head coach or coach," and not experts such as nutritionists or physicians. Thus, athletes are recommended to employ healthy weight control methods based on advice from experts, such as nutritionists and physicians.

• 한국산학기술학회논문지
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• 제15권12호
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• pp.7110-7117
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• 2014

본 연구대상은 2013년 현재 유도심판으로 활동하고 있는 149명 중 1급 심판 98명(65.8%), 2급 심판 18명(12.1%), 국제심판 33명(22.1%)의 자료를 본 연구의 최종 유효 표본으로 사용하였다. 유도심판들의 기초배경을 측정하기 위하여 성별, 연령, 유도경력, 심판급수, 심판경력, 지도경력, 직업 등 총 7문항으로 구분하여 측정하였으며, 유도심판의 스트레스를 측정하기 위해 판정실책 4문항, 청탁 4문항, 판정항의 9문항, 체력부담 3문항, 가정생활 불충실 3문항, 여건부족 2문항 등 총 6가지 유형의 25문항으로 구성되었다. 심판활동에 대한 심판직무만족을 측정하기 위해 동료만족 5문항, 보수만족 5문항, 환경만족 6문항, 업무만족 4문항 등 총 4가지 유형의 20문항으로 구성하여 유도심판 겪는 스트레스 요인들과 스트레스의 문제해결을 위한 노력이 심판의 직무만족에는 어떠한 영향을 미치는지 파악하는 것이었다.