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이경옥(Kyung Ok Yi),하승연(Seung Youn Ha) 한국여성체육학회 2001 한국여성체육학회지 Vol.15 No.1
The purpose of this study is to find the process of development and gait characteristics of an infant as it grows. One 14 months-old infant who started independent walking was observed longitudinally for 18months once a month. I utilized a VICON 370, CCD Camera, VCR, video timer, monitor and AV mixer. Data on twenty-one female adults were used for comparison. I analyzed gait parameters(cadence, step length, walking velocity, single limb stance, double stance, ratio of stance phase & swing phase), joint angle(pelvis, hip, knee, ankle). mean of joint angle, and dynamic range of motion for each gait phase and each plane. This study got following four results. 1. Gait parameters Cadence decreased after 17month. Single limb stance increased gradually as the infant grows and this indecated that the infant developed limb stability and balance control. Step length, walking velocity, the ratio of stance and swing seemed were irregular. 2. Joint Angle Patterns Pelvic tilt pattern became similar at the age of 17month and most close at 30month. Pelvic Obliquity and rotation pattern became stable at 30month. These results indicated that pelvis developed first at sagittal plane. I-Tip flecion & extension patterns were similar to adult level at 27month. Hip adduction & abduction patterns became similar to adult level at 27month and most close at 30 month. Hip rotation became similar to adult level at 31month. In conclusion, hip develope at transverse plane most late. Knee flexion & exension became similar to adult level from 14month old and lmee rotation was close adult at 27month. Knee valgus & varus showed various wave after gait cycle 50% till 32month old. This indicated that knee developed at cronal plane most late. Dorsi & plantar flexion was similar to adult level at 27month and foot rotation was close to adult level at 30month.
여성의 체성분 ( Body Composition ) 분석
이경옥(Kyung Ok Yi),김미예(Mi Ye Kim),이기화(Kee Wha Lee),한혜원(Hae Won Han),임호남(Ho Nam Lim),임혜옥(Hye Ok Lim) 한국여성체육학회 2000 한국여성체육학회지 Vol.14 No.1
The purpose of this study is to provide the basic data for exercise prescription, weight control and standard amount of body fat among Korean women with age 19 or above. For the purpose, we analysed the body composition of 430 female aged between 19 and 65 who live in Seoul metropolitan area and carry out normal daily life. For the measurement, we used $quot;Inbody 2.0$quot; made by Biospace Corporation(Seoul, Korea) which uses BIA as its measurement mechanism. In statistical analyses, we used SAS and calculated mean, maximum, minimum and standard deviation of the body composition variables for each age group. The significance of the difference between each age groups was tested via General Linear Models Procedure and a follow-up test using T tests(LSD)for each variables was added to this procedure. In both tests, a significance level of 5%(confidence level 95%) was adopted. The body composition variables used in this study consis of weight(kg), body fat mass(kg), muscle mass(kg), percent body fat(%), fat distribution and BMI. The body composition variables were used to assess the nutritive condition(protein, fat, mineral) and the upper - lower balance & right left balance. The analysis of body composition revealed that women in their 50s or older contained relatively high percentage of body fat and especially showed greater fat component in their abdomen. However, most women in their 20s turned out to be underweight in both fat, lean body mass and muscle mass. On the other hand. 27.9 percent of the subject were overweight. Noteworthy is the fact that 20.0 percent of the subject showed to have absolutely excessive amount of fat whereas much higher 50.5 percent have excessive ratio of $quot;fat/body weight$quot;. This indicates that lo body fat is a better scale to measure obesity. Without any change in body weight, the obesity may vary according to the proportion of body fat. Unless people do not exercise, they may lose their muscle with ageing(Foster Burns., S. Boyd(1999)., Travis, Shirley., All, Anita. C., Bernard, Marie(1999)). Therefore, those who do not exercise but are able to maintain their weight need to check their body composition to prevent obesity. The muscle component seems to vary with age. The under-muscle type who has less muscle compared to their body weight could be found mainly among the female in their 20s. Among the subject in their 30s, many turned out to be proportionate overweight, which implies that they have excessive amount of fat and may run into a health problem. Among the subject in their 20s frequently found is the under-muscle type and, furthermore, the under-muscle cases are rather evenly divided among underweight, normal weight and overweight. Also, among the proportionate type, the frequency of underweight were roughly similar to that of overweight. All these imply that we ought to throughly examine the reason of the complex phenomena so that we can properly teach the female on health, exercise and life style and prescribe exact fitness therapy for them(Girandola, R. N.,1976). The nutritious condition of the subject revealed that the female in their 20s has excessive fat in the body but lacks protein, which seems to have stemmed from a wrong diet. More importantly, we can find the deficiency in inorganic substance among the subject in their 50s or older. From this, the possibility of osteoporosis might be inferred. Out of the subject in their 20s, both lower limb infirmity and upper limb infirmity could be found and, in addition, unbalanced development between left and right side of the body was discovered. For these people, we need to identify the reason of infirmity or imbalance so that we can prescribe right fitness therapy. The finding of the study rings the alarm to the health of the female in their 20s. We need to throughly examine the factors that affect their health.
이경옥(Kyung Ok Yi),손소영(So Young Son) 한국무용과학회 2002 한국무용과학회지 Vol.4 No.-
This study is to examine effective jumping techniques of Kochagi movement and to ultimately suggest basic information for teaching and evaluation of Kang-Ryeong Mask Dance by comparing kinematic features of Kochagi movement of Kang-Ryeong Mask Dance through kinematic analysis on it by skilled levels. To analyze Kochagi movement of Kang-Ryeong Mask Dance by skilled levels, the subjects of this study were divided into 3 levels: poor skilled(Group A), medium skilled(Group B), and fine skilled(Group C) on the basis of their career of Kang-Ryeong Mask Dance, and 3 subjects were selected in each level. Two 6mm high-speed video cameras were used in 3D image analysis. Differences of kinematic variables gained through experiments between groups were found by One-way ANOVA, and post-hoc comparison was performed by SNK method. Findings of this study are acquired by analyzing Kochagi movement of Kang-Ryeong Mask Dance by skilled levels kinematically as follows; 1. Group A, B, and C showed differences in flexion of right ankle joint in the event that toe touches down the ground in take-off phase(TC1). 2. Group A showed a difference from Group B and C in flexion of right ankle joint and knee joint in the event that toe takes off the ground in the take-off phase(TTl), a maximum flexion of right and left hip joint and left knee joint in the take-off phase. Group A also showed a difference from Group B and C in extension of right shoulder joint in the event that toe touches down the ground in the take-off phase(TCl). Group A showed a difference from Group B in right shoulder joint angle in the event that toe takes off the ground in the take-off phase(TT1). 3. Group B showed a difference from Group C in max. abduction and max. internal rotation of left hip joint. And, Group B showed a difference from Group A and C in abduction of shoulder joint in the event that a relative angle of shoulder is maximum in the flight phase.