Products Analysis in the Reaction of Substituted 1-Phenylethyl Alcohols with p-Toluenesulfonyl Chloride

이정흔,여수동,정덕영,김성홍,박종환,Lee, Jeong Heun,Yeo, Su Dong,Jeong, Deok Yeong,Kim, Seong Hong,Park, Jong Hwan Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.10

중학생의 성별과 신체상에 따른 체육개념 및 체육목표의 차이

이정흔(Lee, Jeong-Heun),이동진(Lee, Dong-Jin),서재하(Seo, Jae-Ha),이문숙(Lee, Moon-Suck),오병돈(Oh, Byoung-Don),조민행(Cho, Min-Haeng),조병준(Cho, Byung-Jun) 한국산학기술학회 2010 한국산학기술학회논문지 Vol.11 No.12

이 연구는 중학생의 성별 및 신체상에 따른 체육목표 및 체육개념에 대한 인식수준을 분석하는 것으로, 중 학생을 대상으로 유층집락무선표집법을 이용하여 남학생 267명, 여학생 166명 등의 총 443명을 표집하였다. 연구목적 을 위해 사용된 도구는 Figure Rating Scale(FRS)과 체육목표 및 개념에 관한 설문지이며, 수집된 자료는 Windows용 SPSS/PC Ver 12.0 프로그램을 이용하였다. 조사대상자의 성별에 따른 체육개념 및 목표의 차이를 분석하기 위해서 t- 검증을 실시하였으며, 조사대상자의 신체상에 따른 체육개념 및 체육목표의 차이를 알아보기 위하여 일원변량분산분 석을 실시하였고, Scheffe의 사후검정을 실시하였다. 이러한 분석을 통해 첫째, 중학생의 체육의 개념과 목표에 대한 인식에서 남학생이 여학생 보다 높은 인식을 가지고 있었다. 둘째, 정상 체형의 중학생이 다른 체형의 중학생에 비해 체육개념과 목표에 대한 인식도가 높았다. 이러한 결과는 올바른 신체상과 건강한 체형을 형성 유지할 수 있도록, 또 한 여학생에게도 체육개념과 체육목표를 경험으로서, 문화재생산으로서, 교과내용을 경험할 수 있도록 포괄적인 개념 의 범위와 계열 및 계획된 수업진행이 필요한 것으로 나타났다. The purpose of this study was to analyze the differences in perception levels of goals and concepts of physical education by the body image and gender of middle school students. Among 461 middle students randomly selected by a multistaged cluster sampling technique, 433 students(boys 267, girls 166) filled out questionnaires consisted of Figure Rating Scale and modified ones. To know the differences in the perception levels of goal and concept of physical education by sex, t-test was utilized. In order to find out the differences in the perception levels of goal and concept of physical education by body image, ANOVA was performed using the SPSS Windows 12.0. The results of this study revealed that boys had higher level of goal and concept of physical education than girls. Second, middle school students classified into normal body image was higher level of goal and concept of physical education that other body images such as very thin, thin, very obese, and obese ones. The results of this study indicated that curriculum of physical education focused on fragmentation of health, psychomotor, cognitive, affective, leisure, holistic human should make girls understand thoroughly and deeply goals and concepts of physical education and ideal body image

스포츠리듬 트레이닝이 중·고등학교 육상 투척종목 선수의 신체밸런스 및 보행능력에 미치는 영향

이정흔(Lee, Jung Hrun),박정민(Park, Jeong Min),이기수(Lee Ki Soo),윤장근(Yoon, Jang Geun),이명선(Lee, Myung Sun) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.3

본 연구는 스포츠 리듬 트레이닝 프로그램이 중▪고등학생 육상 투척선수의 신체밸런스 및 보행능력에 미치는 영향을 알아보기 위하여 그룹별 신체밸런스 및 보행능력을 알아보았다. 스포츠 리듬 트레이닝 프로그램 후 신체밸런스의 변화는 EG 그룹 에서 눈감고 외발서기의 왼쪽과 오른쪽에서 통계적으로 유의한 차이가 나타났으며, 스포츠 리듬 트레이닝 프로그램 후 후 보행능력에 관한 연구에서는 EG 그룹에서 공간적변인과 시간적변인 및 압력분포도에서 통계적으로 유의한 차이가 나타났다. 위의 결과로 보아, 스포츠 리듬 트레이닝 프로그램이 중▪고등학생 육상 투척선수의 신체정렬 및 보행능력의 변화에 긍정적인 효과가 있는 것으로 나타났다. This study was to investigate the effects of sports rhythm exercises program on middle and high school thrower body balance and gait abilities of middle and high school throwers. The participants were divided into two groups: yong moo do exercise group (EG, n=16) and non exercise group (NEG, n=16). The EG took part in the sports rhythm exercises program for 12 weeks. The results of this study were as follows: First, there were significantly increased in body balance in EG compared with NEG after 12 weeks. Second, there were significantly increased in gait abilities in EG compared with NEG after 12 weeks. As conclusions, this study confirmed that the sports rhythm exercises program could improve the body balance and gait abilities of middle and high school throwers.

대학 여자선수의 멀리뛰기 동작 시 숙련자와 비숙련자의 운동학적 비교분석

이정흔(Lee, Jeng-Heun),이명선(Lee, Myung-Sun) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.2

The purpose of this study is to provide the material for technical improvement of women’s long jump by comparative analysis of kinematic factors from 3 steps of running start to takeoff phase, movement in the air, and landing moment targeting 3 skilled and 3 unskilled of Long Jump of college female athletes. The results of this study are as in the following. First, the time for skilled and unskilled athletes skilled in the P4 showed a long time(p〈.05). Second, the CM(center of mass) left and right displacement of skilled in comparison to the unskilled, E6, E7, showed a large displacement to the right from the E8(p〈.05). CM before and after displacement skilled, showed a large displacement in the forward direction(p〈.05). And vertical displacement are skilled E2, E4, E5 showed a small displacement from(p〈.05). Third, the CM horizontal velocity was found that all events except those skilled E8 fast(p〈.05). CM and vertical velocity showed a difference in skilled and unskilled E2(p〈.05), E3 showed a faster rate in the unskilled than skilled downward(p〈.05). Those skilled in the E8 and showed a faster rate downward compared to unskilled(p〈.05). Fourth, the step 2 of the P1 showed a long stride skilled compared to unskilled(p〈.05). Fifth, skilled showed largely in the direction behind the trunk tilt angle compared to unskilled in E6(p〈.05). Sixth, jump foot ankle angle was found to have a person skilled in the E6 large(p〈.05). Unskilled players need to move the CM fast before takeoff phase and make up for their swing leg squat by adjusting their steps to improve their record. And they need to supplement their jump posture during running start.

실업팀 육상선수들의 진로불안이 운동몰입과 경기력에 미치는 영향

이정흔(Lee, Jung-Hun),이명선(Lee, Myung-Sun) 한국사회체육학회 2017 한국사회체육학회지 Vol.0 No.70

The purpose of this study is to identify effects of the influecne of corporate-team athletes’ career anxiety on exercise flow and perceived performance. Also, it investigates the causal relationships between the career anxiety on exercise flow and perceived performance. For the target of the study, the research population consisted of currently registered athletes of the Korea Association of Athletics Federation (KAAF) in 2015. The samples were extracted by using a stratified cluster random sampling method. The study used stratum and cluster sampling and the number of the cases that were used for the final analysis was 232. The data collected through the criteria such as career anxiety on exercise flow and perceived performance were classified and input according to the cases and the purpose of analysis using version 17.0 and AMOS 20.0. The statistic analysis method was correlation analysis, multiple regression analysis and path analysis through structural equation model. The results are as follows. Firstly, career anxiety had significant impact on exercise flow and perceived performance. Secondly, career anxiety had direct influence on exercise flow and perceived performance, while it had indirect influence on perceived performance through exercise flow.

대학 육상선수들의 단거리 Crouching Starting 출발동작에 따른 근전도 분석

이정흔(Jheong Heun Lee),최수남(Su Nam Choi) 한국체육교육학회 2010 한국체육교육학회지 Vol.15 No.1

본 연구는 단거리 Crouching Starting 유형에 따른 근전도 변인을 분석하기 위하여 단거리 선수 8명을 대상으로 스타팅 블록간의 거리를 세 가지 유형 A(45cm, 25dm), B(45cm, 35cm) C(45cm, 40cm)으로 구분하고 지면에 접촉하는 1, 2보 순간과 3보로 연결되는 순간에 하지근육에 작용하는 근활성도, 근활동량을 분석한 연구이다. 출발순간에 관여하는 하지근육의 파워는 100m 경주 기록에 매우 중요하게 작용하고 있다 출발 반응속도, 보폭, 출발동작의 소요시간, 전방 수평속도에 영향을 주고 있다. 본 연구에서 좌?우측 내측광근, 좌측 비복근의 근활성도 높게 나타나 주동근으로 사용되고 있는 것으로 나타났고, 위의 결과를 통해 하지근의 근력향상이 이루어져야 할 것으로 사료된다. 선행연구에서 밝혀진 기록 수준의 차이에 따라 근 활동량이 높게 나타나는 것으로 볼 때, 본 연구결과에 나타난 B유형의 출발법(45cm, 35cm)이 하지근의 활성도가 가장 유리하게 작용하고 있는 것이라 할 수 있다. The purpose of this study was to analyze the biomechanical variables of the physical segments according to starting block conditions in 100m race. In details, we experimented with 8 male short-distance runners under the three conditions such as 25cm, 40cm, and 35cmThe activity amount of the lower limb muscles of right foot in the phase of landing was the descending order of f right inner wide muscle(209.7μV), left inner wide muscle(173.2μV), left gastrocnemius(161.7μV), right biceps femoris (161.3μV), right gastrocnemius(150.4μV), left femoral straight muscle(123.5μV), and left biceps femoris (117.9μV). The activity amount of the lower limb muscles of left foot in the phase of landing was the descending order of right inner wide muscle(284μV), right biceps femoris(206.6μV), left gastrocnemius (200.8μV), left femoral straight muscle(192.9μV), left inner wide muscle(191.7μV), right gastrocnemius (181.6μV), and left biceps femoris(173.1μV). The activity amount of the lower limb muscles of left foot in the phase of taking-off was the descending order of right inner wide musc(283.4μV), right biceps femoris(231.5μV), left gastrocnemius(221μV), left inner wide muscl (210.2μV), left femoral straight muscle(183μV), left biceps femoris(182.9μV), and right gastrocnemius(181.6μV).

한국무용 처용무 수양수무릎디피무 동작의 운동학적 분석

이정흔(Lee, Jeng-Heun),김효섭(Kim, Hyo-Sub),신의수(Shin, Eui-Su) 한국체육과학회 2020 한국체육과학회지 Vol.29 No.2

The purpose of this study is to analyze movement of suyangsumureupdipimu for Korean Dance Cheoyongmu in a kinematical manner. In this study, 6 Korean dance instructors participated as a subject of study, and 6 video cameras were used to analyze 3D(three-dimensional) movement. Results derived from the analysis were as follows. In conclusion, to convey dynamism and strong strength that are a signature of Cheoyongmu in suyangsumu movement, a requisite is to practice in a way that body CM should be powerful in a vertical direction so that big movement can be performed when stretching knee and raising one foot.

지도자의 코칭행동에 대한 고등학교 육상선수의 수용 태도

이정흔(Lee, Jeong-Heun),유영설(Yu, Young-Seol) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.4

The purpose of this study was to explore the high school track and field athletes’ acceptance attitude of coaching behaviors. For the purpose, this study is to used the Q methodology as the qualitative research methodology. Subjects consisted of 35 athletes who attended the G sports high school in Gyeong-gi province. 148 items were collected of all the possible statements that the respondents can make about coaching behaviors. and finally 30 Q-samples(items) were conducted among the concourse(148 items) through face validity analysis and content analysis. The Q-samples were sorted by 35 respondents. The factor analysis was conducted by utilizing the QUANL-PC program. The results were follows, Type Ⅰis named 「the type of sensitive response」. Type Ⅱ is named 「the type of positive acceptance」. Type Ⅲ is named 「the type of selected acceptance」.

대학교 여자육상 단거리 선수의 크라우칭 스타트 동작의 운동학적 분석

이정흔(Lee, Jeng-Heun),신의수(Shin, Eui-Su) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.4

The purpose of this study was to compare the kinematic analysis of the factors crouching start movement subject at university excellent female sprinters and non-excellent female sprinters. And this study was conducted from September 2015 to January 2016. This experiment is results were as follows from the comparative analysis of the kinematic factors. First, the duration of each phase was not significantly different. However, shorter average duration of excellent sprinter. Second, CM horizontal displacement showed a significant difference in event 2 and event 3. And, the excellent sprinter were long of CM position. CM vertical displacement showed a significant difference between the event 1. And the excellent sprinter were high of CM position. Third, CM horizontal velocity showed a significant difference between event 2, event 3 and event 4. And CM horizontal velocity of excellent sprinter showed faster. CM vertical velocity rate was significant difference in event 3. And non-excellent sprinter it was faster downward move. Fourth, trunk tilt angle showed a significant difference in event 1. And excellent sprinter seemed a little trunk tilt angle. Fifth, the hip joints and knee joints were no statistically significant differences. But right ankle joint angle showed a significant difference in all event. And excellent sprinter seemed a smaller angle. Left ankle angle showed a significant difference in event 1, event 2 and event 4. And excellent sprinter seemed a smaller angle. Sixth, angle of t runk torsion ROM (range of motion) is an excellent female sprinters were larger than non-excellent female sprinters. And showed a significant difference in P1.

기능성 밸런스 운동이 육상 투척종목 여자선수의 균형능력과 기능적 운동수행능력에 미치는 영향

이정흔(Lee, Jung-Heun),이명선(Lee, Myung-Sun),허승재(Heo, Seung-Jae),박정민(Park, Jeong-Min) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.2

This study was to investigate the effects of functional balance exercises on balance abilities and functional exercise performance abilities in the throwers. The participants were divided into two groups: Exercise group (n=12) and Control group (n=12). The functional balance exercises program for 12 weeks. The results of this study were as follows: First, As for the balance abilities, there were significantly increased in Up, Down, Left, Right in the exercise group. Second, As for the functional exercise performance abilities, there were significantly increased in carioca, co-contraction, shuttle-run, Cross over up step, one-leg hop test in the exercise group. As conclusions, this study confirmed that the functional balance exercises could improve the balance abilities and functional exercise performance abilities in the throwers. However, there is a need for more specific exercise programs to be developed for the continual improvement of athletic performance in athletics along with further studies to confirm the physiological benefits of those programs.