스포츠에어로빅스 팔착지 동작의 연계관절 각도와 모멘트분석

유실,Yoo, Sil 한국운동역학회 2003 한국운동역학회지 Vol.13 No.3

A relation between the movement range of arms and arising moment has been studied to find out efficient movement range to minimize impact concerning arm landing in sports aerobics. Four male athletes who won top three in national-level sports aerobics competition were chosen for the experiment. They were allowed to jump in between two force platform so that the right hand and the right leg could land onto the front and rear force platform, respectively. The sampling frequency was 200 Hz. The main conclusions based on the analysis of the angle and joint moment parameters of wrist, elbow, and shoulder are as follows: 1. The wrist moment was small when its angle was small, indicating that the dorsi-flexion of the wrist joint offered a positive influence to reduce wrist moment. 2. The elbow angle increased as wrist angle decreased and vice versa. This means that the movement range of the wrist joint affects that of the elbow joint. The darsi-flexion of the wrist is the position to absorb the impact of the elbow effectively rather than to absorb the impact of the wrist itself. The impact is absorbed by the flexion of wrist joint rather than the wrist. 3. The degree of moment transfer of the shoulder joint, having absorbed the impact from the elbow and elbow joint, became dependent on the efficiency of the fore-joints impact absorption.

스포츠 에어로빅스 팔착지 동작의 지면 반력 분석

유실 한국운동역학회 2002 한국운동역학회지 Vol.12 No.1

The purpose of this study is to analyze the ground reaction force of arm landing on arm and leg during sports aerobics. Subjects of this study were total 10 players of 5 males and 5 females who have are domain sports aerobics medalists more than the third place in national tournaments. The subjects jumped between the two ground reaction force analyzers, while landing their right hand on the front platform(#1) and their right leg on the rear platform(#2), and the data frequency was set to 200Hz. Findings of this study are as follows; More than 3 times of impact peak force of vertical reaction force acted on arm joint than on leg joint. And, when ground reaction force on foot increased, ground reaction force on hand decreased. 3 impact peaks of curve of ground reaction force were found - Impact Peak 1 incurred on the time the palm lands on the ground, Impact Peak 2 absorbing shock secondarily on wrist joint, and Active Peak incurred on the time of holding the weight while pushing out the severly bent elbow joint.

대학에어로빅스 축제 경기사를 통해 바라본 한국의 리듬운동

유실,안주미 한국리듬운동학회 2017 한국리듬운동학회지 Vol.10 No.2

The purpose of this study was to review the 25-year game history of Korea’s university aerobics festival(from 1993 to 2017), which has played a leading role in rhythmic movement culture of Korea. As a result of carrying out a documentary consideration and an interview method side by side in order to analyze the participating universities, a change in competition, and a changing trend in number of participants, the following conclusions were obtained. It may be considered to have led Korea’s rhythmic movement culture while developing step by step with producing rhythmic exercise leaders through a competition pattern of university aerobics festival, with diversifying a rhythmic exercise program through professionalism in university aerobics festival, and with forming an overseas exchange of a rhythmic exercise program through internationalizing the university aerobics festival based on the rhythmic aerobics exercise of having begun to be extended as the sport for all in 1972. Also, the university aerobics festival offered an opportunity available for training leaders and displaying creativity as a leading part who will take the lead in sound rhythmic movement of future society through developing of 8 item in group competitions, enacting the regulation of game, producing the creative of rhythmic exercise, and fostering & supplying a professional leader of rhythmic exercise.

근활성도를 통한 하프 빈야사 요가의 연결 메카니즘

유실,이재훈,유선식 한국웰니스학회 2011 한국웰니스학회지 Vol.6 No.3

Yoga has become an increasingly popular exercise in the world. Vinyasa Yoga, which??emphasizes the synchronizing of movement with breath movements, improves muscle power, dexterity, visual??perception, and reduce stress. However, it has not been studied on muscle activities in half Vinyasa. The??purpose of this study was to evaluate muscle activity between beginners and experts in half Vinyasa. Ten female??subjects (age: 22.2±3.94 yrs., body mass: 53.3±5.2 kg, height: 165.0±5.7 cm) participated in this study. sEMG signals were??acquired with Trigno wireless EMG system (Delsys Inc., USA). sEMG signals were recorded from four both-sided??muscles of the P.M.(pectoralis major), R.A.(rectus abdominis),T.B.(triceps brachii) and L.D.(latissimus??dorsi), when they performed three times repetitive movements of Surya Namaskara half Vinyasa. In order to compare two??groups, sEMG signals were normalized with nEMG=EMGpmax/EMG rmvc. In conclusion, first, the less dynamic and??continuous movements of Surya Namaskara half Vinyasa were linked like a chain connection. Second,??experts’ muscle activities were greater than beginners’ for technical movements, but less than for simple movements.

에어로빅스 운동이 대학체육에 미치는 영향 -사립대학교 교과과정을 중심으로-

유실 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.6

관보초록 / 사유토지매각처분허가

유실암 불교사(불교) 1928 불교사 불교 Vol.46 No.-

요가 수련을 통한 한발서기 자세의 안정화 연구

유실(YooSil),홍수연(HongSu-yeon),유선식(YooSun-sik) 한국체육학회 2016 한국체육학회지 Vol.55 No.6

이 연구의 목적은 요가의 한발서기자세를 수련 후 신체안정화에 어떠한 영향을 미치는지를 규명하는 것이다. 요가수련 경험이 없는 20대 여성 13명을 대상으로 24개월간 수련 전 ·후의 3D동작분석과 근육 생체 신호를 측정하였고 분석 결과는 다음과 같다. 첫째, 댄서포즈에서 왼쪽 무릎의 y축과 오른쪽 발목의 x축, 그리고 트리포즈에서 오른쪽 발목의 x축, 왼쪽 발목 y축의 관절 움직임 범위가 작아지며 통계적으로 유의한 차이를 보였다(p<.05). 둘째, 몸통과 골반의 정렬각은 댄서포즈와 트리포즈 모두에서 유의한 차이가 없었다. 셋째, 질량중심 이동거리는 트리포즈의 Y, Z방향에서 작아지며 유의한 차이를 보였다(p<.05). 넷째, 트리포즈 동작에서 양쪽 척추기립근, 복직근 및 왼쪽 대퇴사두근의 근활성도가 커지면서 유의한 통계적 차이를 보였다(p<.05). 이러한 결과는 요가 훈련이 특히 발목과 질량중심움직임을 작게하고, 코어근육을 강화시켜 안정적 자세를 만드는데 중요한 역할을 한다고 할 수 있다. 결론적으로 요가 훈련은 자세 안정화에 효과가 있으며, 자세교정에 영향을 미친다고 할 수 있다. 추후 요가훈련을 통해 자세안정화를 볼 수 있는 정렬각의 변인을 통해 얻을 수 있는 정보에 대한 연구가 더 필요할 것으로 사료된다. The purpose of this study was to investigate the effect of stability on one leg standing posture in yoga practice. Thirteen women college student who have never done yoga participated in this study. In order to collect data before and after yoga practicing for two years, we were used 3D motion capture system and electromyography. The results were as follows. First, ranges of motions for Y axis of left knee joint and X axis of right ankle joint were significantly different in dancer posture(p<.05), and then X axis of right ankle and Y axis of left ankle joint were significantly different in tree posture of pre and post training. Second, the planar alignment angle of trunk-pelvis was not significant difference in dancer and tree posture. Third, CoM-distances of Y, Z directions were significant difference in the tree posture(p<.05). Fourth, Muscle activities of both rectus abdominis, erector spinae and left quadriceps were significant difference in tree posture(p<.05). These findings suggested that yoga training played important roles in stable postures as results of decreasing rotation ankle joint and movement of CoM and enforcing core muscles. This study provides evidence for effectiveness of the stability on standing posture and can get a great effect on posture correction by means of yoga training.Hereafter, study on alignment angle, which is a measurement of postural stabilization will be needed by future yoga training.

태권에어로빅스 옆차기동작의 운동학적 분석

유실 ( Sil Yoo ) 한국운동역학회 2008 한국운동역학회지 Vol.18 No.3

여성노인의 태권에어로빅스 12주 훈련 후 몸통지르기 동작시 하지관절의 생체역학적 변화

유실 ( Sil Yoo ) 한국운동역학회 2009 한국운동역학회지 Vol.19 No.4

골반자세인지 향상을 위한 골반 3축 운동프로그램 개발

유실 ( Yoo Sil ),유선식 ( Yoo Sun-sik ) 한국리듬운동학회 2021 한국리듬운동학회지 Vol.14 No.2

The purpose of this study is to understand the pelvic movement centered on the 3 (X, Y, Z) axes, which are the basis of movement to improve pelvic posture recognition, and to provide a basic exercise that can be repeatedly trained with the rhythm. Therefore it can be easily utilized in the daily sports field to provide the program. Focusing on improving the ability of the exerciser to recognize his/her own posture, it was constructed around the rotational axis of the pelvis (X-left and right axis, Y-anteroposterior axis, Z-vertical axis), which can be the basis of movement. It consists of 9 movements: pelvic tilt exercise, pelvic rotation exercise, and pelvic hike & drop exercise , and the characteristics are as follows. First, the pelvic tilt (forward/backward) exercise is an exercise that adjusts the inclination in the anterior/posterior inclination direction by rotating around the left and right axes of the exerciser’s pelvis in an anatomical posture. Second, the pelvic rotation exercise is a movement in which the pelvis rotates about the vertical axis of the exerciser’s pelvis in an anatomical posture, and the pelvis rotates right front/left and right back/left forward. Third, the pelvic hike & drop exercise is a movement that rotates around the anteroposterior axis of the exerciser’s pelvis in an anatomical position. In addition, motions that can be performed in the lying position, the prone position, and the standing position are presented, so that the pelvis can be controlled in various positions in the three-dimensional space. Therefore, it is thought that the pelvic 3-axis exercise program to improve the ability of the exerciser to recognize his/her own posture can be utilized as the main exercise program for exercise beginners or rehabilitation exercisers as well as the warm-up and cool-down exercises of various life sports programs.