프로골프선수와 골프동호인의 신체조성, 기초체력 분석

손기수(Ki Su Son) 한국발육발달학회 2004 한국발육발달학회지 Vol.12 No.2

유아기 족척의 성차

손기수(Ki Su Son),김기학(Ki Hack Kim),민경선(Kyung Sun Min) 한국발육발달학회 2000 한국발육발달학회지 Vol.8 No.2

본 연구는 대구시내에 거주하고 있고, 신체적으로 질병을 가지고 있지 않으며, 한국의 동일한 연령의 유아들 평균신장(한국소아학회, 1998) ±1 ㎝ 표준편차 내의 4세에서 6세의 유아들 127명을 대상으로 족척을 조사하여 유아에 있어 족척의 성차를 검토한 결과 다음과 같은 결론을 얻었다. 1. 족척은 남아에 있어서 5세에 약간의 면적의 감소가 나타나다가 6세에 다시 증가하는 경향을 나타내고 있다. 그러므로 족저 면적도 오히려 연령이 증가함에 따라 감소함으로 신장의 발육속도에 미치지 못한 것으로 생각된다. 그러나 여아에서는 장심면적이 연령이 증가할수록 감소 추세를, 족저부 면적에 있어서는 남아와 같은 경향을 나타내었다. 2. 4세에서 남아가 여아보다 중부면적이 유의하게 큰 것으로 나타났으며 이로 인해 장심형성은 여아가 남아보다 잘 이루어 졌다고 생각되며, 이러한 양상은 5세에 이르러 큰 차이를 나타내다가 6세에 이르러서는 차이가 다시 좁아지는 경향을 나타내었다. 이상과 같이 유아기의 족척에 있어서는 성차가 있으므로 각 성별의 발육양상에 따른 교육이 필요하며, 족척에 따른 질병도 야기될 경우가 있으므로 정상적인 발의 발육을 위해 올바른 생활습관, 보조운동 등이 필요하다. The purpose of this study was to provide guidelines for directing the growth of children and to make clear sex difference of children`s sole. In the study, subjects were 126 boys and girls ages 4 to 6. For each subject, the item`s characteristics of feet were examined. All subjects were included ±1 ㎝ standard deviation of the standing height means for Korean children by each age. The characteristics of sole dimensions and foot arch were analyzed by means, standard deviations. The results of the study were as follows: 1. Sole dimensions and foot arch increased by age. However, the middle area related to foot arch area decreased during ages 4∼6 years old, and the other items were increased. These were shown that growth velocity of sole were not reach that of height. 2. In the middle area dimensions Boys who are 4 years old were significantly wides than girls. Therefore, in the form of foot arch, girls were better developed done than boys. Middle area dimensions were exhibited significant great sex differences at age 4, but this difference was smaller at age 5.

여자유아의 족척과 운동능력의 관련성

손기수(Ki Su Son) 한국발육발달학회 2001 한국발육발달학회지 Vol.9 No.1

본 연구는 대구시내에 거주하고 있고, 신체적으로 질병을 가지고 있지 않으며, 한국의 동일한 연령의 유아들 평균신장(한국소아학회, 1998) ±1㎝ 표준편차 내의 학생을 대상으로 4세에서 6세의 여자유아들 51명을 대상으로 족척을 조사하여 유아에 있어 족척과 운동능력과의 관련성을 검토한 결과 다음과 같은 결론을 얻었다. 족척의 회귀분석에서 4세는 공던지기, 반복옆뛰기 항목에서는 왼발 모지각, 왼발5지면적, 오른발 중부면적, 왼발1지면적이 많은 영향을 나타내는 것으로 나타났다. 5세에서는 외발서기, 연속줄넘기 항목에서 오른발 f부면적이 많은 영향을 나타냈다. 6세에서는 공던지기, 멀리뛰기, 체지지시간, 반복옆뛰기, 외발서기항목에서 오른발 장심면적, 왼발4지면적, 왼발 중부면적, 오른발 X-line이 많은 영향을 주었다. 이상과 같은 결론을 토대로 다음과 같이 제언할 수 있다. 1. 각 연령에 따라 운동능력, 족척에 있어서는 차이가 있으므로 각 연령별왼발 중부면적의 발육양상에 따른 올바른 교육이 필요하다. 2. 족척에 따른 운동능력의 차이 뿐 아니라 질병도 야기할 경우가 있으므로 정상적인 발의 발육을 위해 올바른 생활습관, 보조운동등이 필요하다. The purpose of this study was to provide guidelines for directing the growth of children and to make clear relationships between sole and physical fitness of children by analyzing the characteristics of sole. In the study, subjects were 51 girls ages 4 to 6. For each subject, the item`s characteristics of sole were examined. All subject were included ±1㎝ standard deviation of the standing height means for Korean children by each age. The characteristics of sole dimensions, foot arch and physical fitness were analyzed by multiple regression. The results of the study are as follows; 1. On the multiple regression analysis of sole in the age group of 4, left 1st toe angles, left 1st, 5th toe dimension, right middle dimension influenced ball throw, side step items. 2. In the age group of 5, one leg stand and jump over control under item were influenced by right foot f dimension. 3. In the age group of 5, all items were influenced by all areas.

누적손상이론을 이용한 풍력증속기의 가속수명시험법 개발

손기수(Son, Ki-Su),곽희성(Kwak, Hee-Sung),강창훈(Kang, Change-Hoon),조준행(Cho, Jun-Haeng) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.11

This study was performed to develop accelerated life test method of the wind-turbine gearbox using accumulated damage theory that used to model the fatigue of parts that receive variable load. The accumulated damage theory was introduced, and the estimation of life and calculation of accelerated life test time was illustrated. As the actual application example, accelerated life test method of the gearbox was described. Life distribution of the wind-turbine gearbox was supposed to follow Weibull distribution and life test time was calculated under the conditions of average life (MTBF) 140,600 hours and 99% reliability for one test sample According to the accumulated damage theory, because test time can shorten in case increase test load, test time could be reduced by 1.2 years when we put the load 1.2 times of rated load than 0.93 times of rated load that is equivalent load calculated by load spectrum of the wind turbine. This time, acceleration coefficient was 21.3. This accelerated test method was used to develop accelerated test method of gear reducer, gear and bearing as well as the industrial gearbox and it is considered to be applied comprehensively to mechanical parts the fatigue of which is happened by load or pressure etc.

발바닥의 평면적 분석에 의한 족척과 운동능력의 관련성 검토

손기수(Ki Su Son) 한국체육교육학회 2002 한국체육교육학회지 Vol.7 No.3

The purpose of this study was to investigate the relationship between characteristics of sole and motor ability in children. 51 girls and 75 boys with ages ranging from 4 to 6 participated in the study as subjects. For each subject, the characteristics of sole were analyzed by photography and several motor abilities were measured. The relationship between sole dimensions, foot arch and motor ability were analyzed by multiple regression. Results of the study were as the following. For boys of age 4, throwing and one leg stand were affected by the 1st toe angles of both feet and the 3rd toe dimension of the right foot. At age 5, side step was affected by the middle dimension and the 1st toe angle of the right foot, and the 2nd toe dimension of both feet. At age 6, throwing was affected by the 5th toe angle and Y-line of the right foot whereas one leg stand was influenced by the 5th toe angle of the left foot and the 1st toe and heel angles of the right foot. For girls of age 4, throwing and side step were affected by the 1st toe angle and dimensions of the 1st and 5th toe of the left foot and middle dimension of the right foot. At age 5, one leg stand and jump over crawl under were affected by the f-dimension of the right foot. At age 6, all of the test items were affected by the X-line and areas of the right foot and dimensions of the 4th toe and middle area of the left foot. These results indicated that specialization of sole function and motor ability occurs at age 5 and 6 for boys and girls respectively. Since the shape of feet seems to be related with motor ability, proper attention should be directed to the normal growth of feet in children.

유아의 족척부 면적계산의 타당성검토

손기수(Ki Su Son) 한국발육발달학회 2001 한국발육발달학회지 Vol.9 No.2

여자유아의 족척부 발육경향

손기수(Ki Su Son) 한국발육발달학회 2001 한국발육발달학회지 Vol.9 No.1

본 연구는 족척 각부의 특징을 분석하는 것에 의해 유아들의 족척부 발육양상을 이해하고 이에 대한 기초자료를 제공하는데 목적이 있으며, 본 연구의 대상은 3세에서 7세까지 그리고 비교집단인 13세에 이르는144명의 여자유아 및 청소년으로 하였다. 측정에 참가한 대상자는 한국의 동일한 연령에 있는 평균신장의 ±1㎝ 표준편차내에 해당되는 유아를 포함하였으며, 족척부 면적, 장심면적은 사진에 의해 얻어진 평균, 표준편차로 분석하였으며 그 결과는 다음과 같다. 1. 전체적으로 발가락, 발바닥, 족척의 면적, 길이 변인들은 연령이 증가함에 따라 증가경향을 나타냈지만, 특히 7세에 유아의 발의 형태발육이 왕성한 것으로 나타났다. 그러나 발바닥 장심면절과 관련이 있는 중부면적에 있어서 4세∼5세에 감소경향은 연령증가에 따른 장심면적의 증가에 의해서 중부면적의 감소가 일어났다. 2. 13세를 기준으로 백분율을 이용한 도달률을 보면 대부분 7세가 되어 높은 도달률을 나타냈지만, 장심비에 있어서 여아에 있어서는 4세에 거의 90%에 도달하여 여아의 경우 장심비는 이미 4세에 성인의 값에 가까워지며, 남아보다 빠른 경향을 나타내었다 3. 사진으로 분석한 족저면적과 김(1978)이 제안한 족저면적 추정면적을 비교한 결과 3세에서 5세까지는 추정법의 오차가 증가하는 경향을 나타내다가, 6세부터는 오히려 감소하는 경향을 나타냈다. 그리고 전체적으로 볼 때 약 90.87%정도가 추정된 것으로 나타났다. The purpose of this study was to provide guidelines for directing the growth of children and to make clear growth pattern of girl`s sole by analyzing the characteristics of the sole. In the study, 144 female students, ages 3 to 13 were selected for this study. For each subject, the item`s characteristics of foot arch were examined. All subject were included ±1㎝ standard deviation of the standing height means for Korean children by each age. The characteristics of sole dimensions and foot arch were analyzed by means and standard deviations. The results of the study are as follows: 1. Sole dimensions and foot arch were increased by age. In the age group of 7, growth of sole most increased. But middle area that was related to foot arch area was decreased during ages 4∼5 years old. 2. The reaching rate of each items by percentage based on 13 years old girls was 89.3% to 4 year old girls in the foot arch rate. Therefore 4 year old girls were reached nearly adult`s value in the foot arch rate. 3. The dimensions of sole by estimation method was higher than by photo method until 5 year old, but opposition trend after this. Overall the dimensions by the estimation method were over estimated by about 90.87% than with the method of calculating by photo.

남자유아의 족척부 발육경향

손기수(Ki Su Son) 한국발육발달학회 2000 한국발육발달학회지 Vol.8 No.1

테니스 경기에서 서비스와 승패의 관련성

손기수(Ki Su Son),강영수(Young Su Kang) 한국체육교육학회 2004 한국체육교육학회지 Vol.9 No.1

결과지식 제시방법에 따른 수행의 효과

손기수(Ki Su Son) 한국체육교육학회 2002 한국체육교육학회지 Vol.7 No.2

The purpose of this study was to investigate the effects of knowledge of results of frequency and precision in dart throwing as practice goes on. Subjects were 40 university student and were randomly allocated in each experimental manipulated group. The experimental task was the dart throwing to target which was set 3M away from subjects. The group were 50% relative frequency group, 100% relative frequency group, self-controlled group and controlled. The conclusions are as follows ; First, KR group has an effect on 50% relative frequency group and self-controlled group. Second, KR group han an effect on 100% relative frequency group. Third, 50% relative frequency group, 100% relative frequency group, self-controlled group has more effect than controlled group. Fourth, performance score has an effect on Quantitative 50% relative group, performance curve has an effect on self-controlled group. Therefore, when propose 50% relative frequency than 100% relative frequency the result effectively perform, and profit propose KR time is that time when students wants.