왈츠 Reverse Turn 동작 시 각도 변화에 따른 상체근육의 근전도 분석

서세미 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.2

하지 저항운동을 통한 여성고령자 보행 시 하지관절 및 분절의 운동학적 차이

서세미 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.12

The purpose of this study is to offer basic data for the fall prevention by analyzing the kinematic difference between the lower limb joints and the lower extremities in elderly people's walking given the lower-limb resistance exercises. For this, three-dimensional image analysis was carried out by selecting 7 elderly women from over 70s to under 80 years old. To obtain the three-dimensional location coordinates in the lower limb joints and the lower extremities, it shot with 100Hz/s by using MCU(Qualisys, Sweden) camera. The shot image gained raw data on the location coordinates by using QTM(Qualisys, Sweden). As a result of calculating three-dimensional angle by using program of Matlab 6.5, the following conclusions were obtained. Flexion and extension in the thigh and the lower-leg extremities were indicated to be big in motion of flexion after exercising at E5. Foot segment indicated statistical difference while showing eversion at E4. Knee joints showed flexion at E4 after exercising. Ankle joints showed statistical difference while indicating motion in inversion at E3 and in eversion at E4(p<.05). 본 연구는 하지 저항운동 시 고령자 보행의 하지분절과 관절의 운동학적 차이를 분석하여 낙상예방을 위한 기초자료를 제공하는데 있다. 이를 위해 70대 이상 80세 이하의 여성 고령자 7명을 선정하여 3차원 영상분석을 실시하였다. 하지 분절과 관절의 3차원 위치좌표를 얻기 위해 ProReflex MCU(Qualisys, Sweden) 카메라를 사용하여, 100Hz/s로 촬영하였다. 촬영된 영상은 QTM(Qualisys, Sweden) 프로그램을 이용하여 위치좌표에 대한 원자료(raw data)를 얻었으며, Matlab 6.5 프로그램을 이용하여 3차원 각도를 산출한 결과, 다음과 같은 결론을 얻었다. 대퇴와 하퇴분절의 굴곡과 신전은 E5에서 운동 후 굴곡의 움직임이 크게 나타났으며, 발 분절은 E4에서 외번을 보이면서 통계적 차이를 나타냈다. 무릎관절은 운동 후 E4에서 굴곡을 보였고, 발목관절은 E3에서 내번, E4에서 외번의 움직임을 나타내면서 통계적인 차이(p<.05)를 보였다.

여성 고령자 보행 시 연령별 하지 관절의 3차원 각 차이

서세미(Se Mi Seo),김태삼(Tae Sam Kim) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.40

The purpose of this study was to investigate the difference of 3D angle in the lower extremity joint during elderly walking. Total of ten women elderly participated in this study and they were divided into two groups(70`s and 80`s) to ages. To accomplish this study, motion analysis was performed with 7 cameras(SF: 100Hz, ProReflex MCU, Qualisys, Sweden). Total of 13 reflective markers were attached on the participant`s joint and segment. The 3D angle of lower extremity joint was calculated by using Cardan`s method through Matlab 6.5 program. After data analysis, a independent t-test was performed to inspect whether statistically significant at the 5% level were found between groups using by SPSS 11.0. The results of analysis were as follows; First, in movement of the hip joint, at the mid stance(adductiobduction) and the complete landing and decelerated swing(internal/external rotation), it was found that 70`s group tended to show significantly further movement of abduction and external rotation than 80`s group on a statistical basis. Second, The movement in knee joint was indicated to have no statistically significant difference in flexion & extension, varus & valgus, and internal/external rotation. Third, in regard to the movement of ankle joint, it was found that 80`s group tended to show significantly further movement of plantar-flexion at landing, complete landing and decelerated swing than 70`s group on a statistical basis. And during accelerated swing, it was also found that 70`s group tended to show inversion, whereas 80`s group tended to show eversion. There were significant differences in the movement during said phase between two groups on statistical basis(p<.05).

월경주기에 따른 유산소운동 수행 시 혈중지질 및 에스트로겐 농도에 미치는 영향

서세미(Seo Se-Mi),김종혁(Kim Jong-Hyuck) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.1

The purpose of this study was to suggest right exercise method during menstrual period in women. Targeting generally female university students, it selected 10 people(Group A) regularly with three times a week, and passage of 8 weeks, and 10 people(Group B) without taking regular exercise. The same aerobic exercise was carried out in the menstrual period and corpus-luteum period. As a result of research, first, the group with exercise showed high reduction in cholesterol after exercise compared to group without exercise. Significant reduction was indicated in the menstrual period of the group with exercise. Second, the group with exercise showed high reduction in neutral lipid after exercise compared to group without exercise. The group with exercise showed bigger reduction in neutral lipid after exercise in the corpus-luteum period than after exercise given menstruation. Third, the group with exercise showed a high rise in high-density lipoprotein cholesterol compared to the group without exercise. A significant rise was indicated in the corpus-luteum period of the group with exercise. Fourth, the group with exercise showed low rise in estrogen level after exercise compared to the group without exercise. The aspect in the group with exercise and the group without exercise in the corpus-luteum period showed similar rise. Difference by period between both groups wasn't shown all. Accordingly, the group of taking regular exercise is considered to have more positive influence regardless of menstrual cycle than the group of not taking exercise.

리듬체조 퐁쉐 2회전 1/2턴 기술의 역학적 분석

서세미 ( Se Mi Seo ),류지선 ( Ji Seon Ryu ),김태삼 ( Tae Sam Kim ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.3

This study was analyzed the characteristics on the stability of posture while conducting a through two and half rotation technic of penche in rhythmic gymnastics. Two rhythmical gymnastics player(LKH and SSJ) who is a member of the national team were selected, and for obtain the kinematic and kinetic variables were used a ProReflex MCU 240 infrared camera(Qualisys, Sweden) and a Type9286A force platform(Kistler, Switzerland). The mechanical factors were computed by using Visual3D program and Matlab R2009a. During the landing and rotation phase the results showed following characteristics; 1) In medial-lateral and horizontal displacement of the support foot, LKH showed smaller movement than SSJ, but SSJ showed smaller movement than LKH in swing foot. LKH showed bigger movement in medial-lateral axis of COP and vertical axis of COG, but SSJ showed bigger movement in horizontal axis of COP and medial-lateral axis of COG. 2) SSJ showed bigger maximum horizontal and vertical velocity at P1 and P2 than LKH. 3) In the inclination angle of COP and COG, SSJ showed smaller change than LKH, but within medial-lateral tilt of the shoulder, LKH performed rotation motion in horizontal position than SSJ. There was no differences in each force components during rotation, but on landing phase, the results showed a characteristic that SSJ exerted bigger breaking force and vertical force than LKH.

고령자 보행 시 탄성저항운동이 지면반력 신호의 주파수 크기와 variability에 미치는 영향

서세미 ( Se Mi Seo ),류지선 ( Ji Seon Ryu ) 한국운동역학회 2008 한국운동역학회지 Vol.18 No.4

에어로빅 체조 1/2 Turn Split Jump 1/2 Turn 동작의 운동학적 분석

최인애 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.1

리듬체조 Backward Illusion 동작 시 회전별 신체중심의 Variability

김태삼,류지선,서세미,이미숙,윤석훈,박상균 한국여성체육학회 2011 한국여성체육학회 학술세미나자료집 Vol.2011 No.-

댄스스포츠 룸바 Forward Walk 시 숙련도에 따른 운동학적 특성

김태삼 ( Tae Sam Kim ),서세미 ( Se Mi Seo ) 한국운동역학회 2010 한국운동역학회지 Vol.20 No.3

The purpose of this study was to investigate the kinematic difference between skilled and less skilled group for the forward walk at dance sports rumba. Six female players(skilled group: 3, less skilled group: 3) were participated as the subjects. To obtain the three-dimensional location coordinates in the joints and segments, it shot with 100Hz/s using 8 video cameras. Step length, shoulder rotation angle, orientation angle and angular velocity of pelvis were analyzed for each trail. The skilled group showed a bigger movement than the less skilled group at the shoulder rotation angle and ROM. The skilled group showed a bigger movement than the less skilled group at the up/down obliquity and internal/external rotation movement for pelvis. And the skilled group showed a bigger movement than the less skilled group at Maximum angle (down obliquity) of P2 and Maximum angle (up obliquity) of P3 to pelvis ROM. The skilled group showed a faster angular velocity than the less skilled group at P2 (+ direction, posterior) of anterior & posterior tilt, P2 & P3 (- direction, up) of up & down obliquity, and P2 (+ direction, external) of internal & external rotation.

여대생들의 체지방률과 신체활동량 따른 건강 체력

임희진(Hoe-Jin Lim),서세미(Se-Mi Seo) 한국생활환경학회 2010 한국생활환경학회지 Vol.17 No.5

The purpose of this study was to compare physical activity levels the and physical fitness according to body composition and the body composition and physical fitness according to physical activity levels in female university students. The subjects was 316 total of female university students. Over 30% Body fat group was 36% and low physical activity level group was 81.4% of total. Body fat was effect to the physical activities. Right grip strength, back strength, sit-up were significantly but forward bending, step-test were no particular changed significantly in according to body composition (p<.001). The amount of physical activities were influence by body fat (p<.001). And right grip strength, back strength, sit-up, forward bending were significantly but step-test was no particular changed significantly in according to physical activity levels (p<.001). Therefore body fat of body composition and physical activity levels were relative of muscle strength, muscle endurance of physical fitness. But no relationship was Cardiovascular endurance of physical fitness.