2011 대구세계육상선수권대회 남자 장대높이뛰기경기우수/준우수선수 경기기술의 운동학적 요인 비교 분석

최규정 ( Kyoo Jeong Choi ),문제헌 ( Je Heon Moon ),이경옥 ( Kyung Ok Yi ),정범철 ( Bum Chul Jung ) 한국스포츠과학원 2014 체육과학연구 Vol.25 No.4

The purpose of the study was to investigate the relationship between the different kinematical variables with respect to the records and techniques performed by the participants during the 2011 Daegu IAAF World Championships Men``s Pole Vault Event. Subjects chosen for the study were 8 male athletes who were selected for men’s pole vault finals (highly skilled group) and 7 athletes who scored lowest record (skilled group) from the men’s pole vault qualifying round. Personal best record of the each subjects were chosen to perform two dimensional (2D) and three dimensional (3D) video analyses. The data were obtained at 60 Hz with the use of five video cameras and digitizing was performed. Kinematical variables were calculated after smoothing the data using 2nd order Low-Pass Butterworth filter at cut-off frequency of 10 Hz and Independent samples t-test was performed to test any differences between two subject groups. The results: during the run-up stage, the horizontal velocity rate of the number of steps and run-up phase was obtained higher in highly skilled group than skilled group. During the take-off phase, deceleration in the horizontal velocity rate was observed in highly skilled group than skilled group. Distinct technical characteristics of distant and lower take-off of the take-off angle (angle of pole support) were also observed in highly skilled group than skilled group. During the pole bending and releasing phase, horizontal velocity was generally higher in highly skilled group than skilled group. It is considered that highly skilled group was able to jump higher as the vertical velocity during the pole bending as well as release phase was much higher in comparison to the skilled group.

2011 대구 세계육상선수권대회 여자 장대높이뛰기 경기 참가선수 경기기술의 운동학적 요인 비교분석

최규정 ( Kyoo Jeong Choi ),이경옥 ( Kyung Ok Yi ),김남희 ( Nam Hee Kim ),강지은 ( Ji Eun Kang ),김혜림 ( Hye Lim Kim ),문제헌 ( Je Heon Moon ),정범철 ( Bum Chul Jung ) 한국운동역학회 2013 한국운동역학회지 Vol.23 No.3

The purpose of this study was to compare the kinematic analyses of the women`s pole vault skills difference between skilled group (1st to 8th place) and less skilled group (10th to 15th place) who participated in IAAF World Championships Daegu 2011. To achieve this goal, 16 women`s pole vault player`s kinematic analyses was conducted. Player`s best performance was recorded by five normal video cameras operating at 60 Hz. The results of this study through the research procedures above are as follows. First, Skilled group`s average step length and the ratio of step length to her height were longer than less skilled`s group in runup phase. Second, Skilled group`s horizontal velocity was faster than less Skilled group`s results. And pole plant angle was lower than less Skilled group`s results in take-off phase. Third, Maximum pole flexion angle did not show difference of between two groups in pole bending phase. However, Skilled group`s vertical velocity was higher than less skilled group`s results.

중,고 학생 운동선수 체력 평가기준 개발

최규정 ( Kyoo Jeong Choi ),고병구 ( Byung Gu Go ),김언호 ( Eon Ho Kim ),황단비 ( Dan Bee Hwang ),홍성인 ( Sung In Hong ),장채욱 ( Chae Ouk Jang ) 한국스포츠과학원 2015 체육과학연구 Vol.26 No.4

The purpose of this study was to evaluate the physical performance and develop the criteria of 4243 middle and high school students across 5 provinces (Busan, Gwangju, Daejeon, Gyeongi and Jeonbuk) in Korea that took part in the talent development project. The data was collected between 2011 and 2014. The criteria was divided by gender and age across different grades, and the mean, standard deviation and 5 evaluation levels were calculated and analyzed.

2004 아테네올림픽 대비 레슬링 경쟁 선수 기술 특성 분석 및 대응전술 개발

최규정 ( Kyoo Jeong Choi ),김병현 ( Byung Hyun Kim ),윤재량 ( Jae Ryang Yoon ),방대두 ( Dae Doo Bang ) 한국스포츠과학원 2005 체육과학연구 Vol.16 No.4

Using Akaiv system, video tapes on 74 foreign wrestling athletes (competitors) were converted to moving picture-files, and classified - summarized according to the weight categories and individuals. Their skill-characteristics were analyzed biomechanically. And physical, mental and skill characteristics of 8 Korea national representative wrestling athletes were analyzed using old data and informations from wrestling specialists and coaches. The skill-characteristics of foreign competitors were used as background to extract competing strategies for our team. The strategies were focused to overcome the competitors in the games, and finally to get gold medal in 2004 Athens Olympic Games. The files and DB on those were used to study and memory the skill-characteristics of foreign competitors for our team. And the skill-characteristics of foreign competitors were used to check the aim of daily training. Despite of the lack of scientific and systematic structures, this study was useful in wrestling training fields. That is based on that skill characteristics of foreign competitors were appeared several times in Olympic Games and that the descriptions have possibilities to make the games more winning sides by using more effectively and aggressively. But quantitative analyses and objective criteria will make the research more advanced and usefully.

조깅 시 인체측정학적 변인이 수직 지면반력에 미치는 영향

최규정 ( Kyoo Jeong Choi ),이경옥 ( Kyung Ok Lee ),이영숙 ( Young Sook Lee ) 한국스포츠과학원 2005 체육과학연구 Vol.16 No.3

Fifty female students repeated 11 trials across a force platform by jogging. Force data were collected on-line at 1,000 Hz and analyzed for the magnitude and temporal characteristics of vertical ground reaction force (G.R.F.). Multiple regression analysis was used to study the relationship between the magnitude of these kinetic data and anthropometric data for their size & volume taken from measurement of the subjects. The results support the general conclusion that anthropometric variables are significant effectors of the magnitude of vertical ground reaction force. The coefficient of determination of circumference variable is most and length variable is least among 3 anthropometric variables. And circumference variable affects passive parts of vertical ground reaction force rather than active ones. In addition mass variable shows very significant in the two impulses rather than two peak forces.

2011 대구 세계육상선수권대회 여자 장대높이뛰기경기 기술의 운동학적 분석

최규정 ( Kyoo Jeong Choi ),이경옥 ( Kyung Ok Yi ),김남희 ( Nam Hee Kim ),강지은 ( Ji Eun Kang ),김혜림 ( Hye Lim Kim ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5

The purpose of this study was to perform the kinematic analyses of the women`s pole vault skills in IAAF World Championships Daegu 2011. Subjects were the 1st through 8th place finishers in the pole vault. The kinematic analyses were divided into four phases: two dimensional run up analysis, and three dimensional analyses for the remaining plant, swing up, and extension phases. Run-up variables consisted of run up distance, number of steps, average step length, ratio of step length to height, average velocity at the final 5~10 m, approach position. Three variables were analyzed during plant: pole angle, center of gravity (COG) velocity, and COG takeoff angle. Swing up phase variables included: pole flection angle, COG velocity (horizontal, vertical, resultant), COG trajectory and bar approach angle of COG. Compared to the 2009 World Championships in Berlin, the average vault height increased, while run up velocity and approach position were almost unchanged. However, horizontal velocity during the last two steps of the final approach decreased noticeably compared to speeds from 1990. These results reflect the change in both technique and physical fitness in pole vaulters. During extension, the peak height of COG surpassed the clearance height by an average of 0.11m. These specific results can help coaches and athletes modify training and improve performance.

2011 대구 세계육상선수권대회 남자 장대높이뛰기경기 기술의 운동학적 분석

최규정 ( Kyoo Jeong Choi ),이경옥 ( Kyung Ok Yi ),김남희 ( Nam Hee Kim ),강지은 ( Ji Eun Kang ),김혜림 ( Hye Lim Kim ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.5

The purpose of this study was to perform the kinematic analyses of the men`s pole vault skills in IAAF World Championships Daegu 2011. Subjects were the 1st through 8th place finishers in the pole vault. The kinematic analyses were divided into four phases: two dimensional run up analysis, and three dimensional analyses for the remaining plant, swing up, and extension phases. Run-up variables consisted of run up distance, number of steps, average step length, the ratio of step length to his height, average velocity at the final 6~11 m, approach position. Three variables were analyzed during plant: pole angle, center of gravity (COG) velocity, and takeoff angle of COG. Swing up phase variables included: pole flexion angle, COG velocity (horizontal, vertical, resultant), COG trajectory and bar approach angle of COG. Compared to the 2009 World Championships in Berlin, the average vault height, run up velocity and approach position increased. However, horizontal velocity during the last two steps of the final approach decreased dramatically compared to speeds from 1990. These results reflect the change in both technique and improved physical fitness in pole vaulters. During extension, the peak height of COG averaged 0.3m higher then COG height when the pole was released. These specific results can help coaches and athletes modify training and improve performance.

하계 스포츠 세부 종목별 손상유발동작 탐색연구

김태완 ( Tae Wan Kim ),최규정 ( Kyoo Jeong Choi ),문영진 ( Young Jin Moon ),송주호 ( Joo Ho Song ),박상혁 ( Sang Hyuk Park ),김은국 ( Eun Kuk Kim ),김태규 ( Tae Gyu Kim ),강성기 ( Seoung Ki Kang ),노대성 ( Dae Sung Roh ) 한국스포츠과학원 2015 체육과학연구 Vol.26 No.4

The purpose of this research is to provide the information about sports injury by surveying and analyzing a result, and to lead analytic and scientific training among the subjects being elite summer sport athletes. All sports injuries are recorded on injury report form and the following results were obtained. In Cycle sport, the prevalence of injuries of the low back, knees were highest. and In Table tennis sport, the prevalence of injuries of the ankle was highest due to the chronic fatigue. The prevalence of injuries of the shoulder, low back were highest due to the overuse of joints. In Badminton sport, the prevalence of injuries of low back, knees, ankles were highest by overtraining. In Gymnastics, the prevalence of injuries of the low back, knees, ankles were highest. In Archery sport, there is a lot of injuries to the shoulder and neck. In Weight lifting sport, the prevalence of injuries of the low back, knees, and ankles were highest. In Golf sport, the prevalence of injuries of knees, low back were highest. In Hockey sport, the prevalence of injuries of ankles, knees, low back were highest. In Boxing sport, the prevalence of injuries of hands, shoulder, the low back were highest, In Judo sport, there are overall damage occurred in parts of the whole body, but the prevalence of injuries of ankles, knees, low back were highest. In Fencing sport, the prevalence of injuries of the low back, knees were highest. In Wrestling sport, although there is a difference slightly depending on freestyle and Greco-Roman, but the prevalence of injuries of knees, ankles, low back were highest. In Handball sport, the prevalence of injuries of ankles, knees were highest. In Taekwondo, the prevalence of injuries of ankles, knees, feet were highest.

한국 성인남성의 체지방률에 따른 체력수준의 연관성

박세정(Park, Sae-Jong),최규정(Choi, Kyoo-Jeong),송홍선(Song, Hong-Sun),김광준(Kim, Kwang-Joon),성봉주(Sung, Bong-Ju),소위영(So, Wi-Young) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.6

The purpose of this study was to examine whether the percent body fat was related to the level of physical fitness in Korean men. The subjects were men aged between 19 and 64 years (n = 2,419) who participated National Fitness Award in Korea between May 2012 and October 2012. They were divided into 3 groups: those with <20% body fat, 20-25% body fat, and >25% body fat. The physical fitness tests consisted of grip strength, sit-ups, a progressive aerobic cardiovascular endurance run (PACER), sit-and-reach, shuttle run, and standing long jump. The inter-group differences in physical fitness level were analyzed by one-way analysis of variance via Tukey post-hoc test. The results indicated that compared to the <20% body fat group, the 20-25% body fat group (overweight group) and >25% body fat group (obese group) had a lower fitness level as judged by grip strength, sit-ups, the PACER, sit-and-reach, shuttle run, and standing long jump (p<.05). We concluded that among adult Korean men, fitness level was lower in those with a higher percentage of body fat than in those with lower percentage of body fat.

레슬링 그레코로만형 경기규칙 변화에 따른 한 경기당 발생된 점수의 구조 및 체급별 차이 분석

안한봉 ( Han-bong An ),최규정 ( Kyoo-jeong Choi ) 한국스포츠과학원 2016 체육과학연구 Vol.27 No.4

The purpose of this study was to investigate the level of factors associated with points and the difference among weight categories after the revision of wrestling competition rules from video images. Factors associated with points were average point per a game, average points according to playing type, the occurring frequency of point according to the skills, the frequency and successful ratio of Parter, and the time zone of points occurred. The video contents were concerned on athletes ranked in 1 - 5 (6 person) at 59, 66, 75 Kg categories of Greco-Roman style in the 2014, 2015 World Wrestling Championship. The analysis was done by watching TV monitor several times. Five quantitative factors were tested between weight categories. As the results, no significant difference was found in average obtained point, but significant difference was found in average lost point (p<.05). Average obtained point showed significant difference in cross effect of the type of game and weight category. And average lost point showed significant difference in the type of game (p<.01) and weight category (p<.05), too. The frequency of point by skills of stand and ground wrestling showed significant difference in weight category (p<.001). However, no significant difference was found in frequency of point by time zone among weight categories. In conclusion, the point obtained and lost and the frequency of it are associated with the type of game and skills included in it of Greco-Roman style wrestling. New training program focused on enforcing the correct type of game and skills in it might be useful for developing the performance.