축구선수의 Detraining과 Retraining이 혈청지질 및 호르몬농도에 미치는 영향

정정화,박재현,채종훈,성혜련,황지인,윤미숙,노금선,윤종관,윤영학,노순덕,정경숙,박일규,김은희,박현태,박상갑 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

The purpose of this study was to investigate the effects of detraining and retraining on serum lipid and hormones in soccer players. Subjects were seven male high-school soccer players. V˙O_2max was determined for each subjects by administering a treadmill test(initial speed: 90m/min, grade: 5%, increasing speed per 3 min: 30m/min). Serum lipid(T-C, TG, HDL-C LDL-C) and hormones(epinephrine, norepinephrine, growth hormones, cortisol) were assayed pre and post detraining in 10, 20, 30 days after retraining. The repeated ANOVA was used to determine significant differences. The 0.05 level of significance was as critical level for the study. The results of the study were as follows: 1. V˙O_2max(ml/min) were 3576.3±204.2ml/min pre detraining, 3234.1±198.9 ml/min post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/min) were 3601.4±170.9 ml/min. There were significantly(p<.05) increased in retraining periods. 2. V˙O_2max(ml/kg/min) were significantly(p<.05) decreased from 62.3±2.9 ml/kg/min to 55.9±4.7 ml/kg/min in detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/kg/min) were 62.4±3.4ml/kg/min, 62.7±2.3ml.kg/min, 67.3±7.2ml/kg/min respectively. There were significantly(p<.05) increased in retraining periods. 3. T-C were significantly (p<.05) increased from 166.6±8.5mg/dl to 175.3±10.3 mg/dl in detraining. In 10, 20, 30 days after retraining, T-C were 160.1± 3.2mg/dl, 156.7±3.7mg/dl, 140.3±9.0mg/dl. There were significantly(p<.05) decreased in retraining periods. 4. HDL-C were 61.4±6.6mg/di pre detraining, 5.3±6.6mg/dl post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, HDL-C were 56.9±7.1mg/dl, 56.4±9.2mg/dl, 57.7±9.1mg/dl respectively. There were no significant difference in retraining periods. 5. The hormones(epinephrine. norepinephrine, growth hormone, cortisol) were changed as same patterns. Epinephrine were 26.0±7.0[g/ml pre detraining, 24.6±3.2pg/ml post detraining. In 10, 20, 30 days after retraining, epinephrine were 26.9±5.6pg/ml, 30.6±6.2pg/ml, 29.4±5.6pg/ml respectively. There were no significant difference in retraining periods. In conclusion, HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were decreased, T-C, LDL-C and TG were increased in detraining. But HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were increased, T-C, LDL-C and TG were decreased in retraining.

경주지역 여고생의 초경과 체성장간의 관계

김준섭,권오구,박진석,오종수,박정현,박제식,안세한,이용환,서정호,신태섭,최영배,김덕수,이관,박수경 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

본 연구는 경주지역 1개 고등학교 3학년 여고생을 대상으로 초경 시작 전인 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레 수치와 초경 연령을 파악하여 여성의 초경이 빠를수록 체성장 속도의 변화가 있을 것이라는 가설을 기초로 두 요인간의 관련성을 파악하고자 시행되었다. 경주시 1개 여자고등학교 3학년생 총 317명에 대해 ㅊ경 나이, 초경시 심리 상태, 초경이 시작되었을 때의 상담 여부와 상담하였던 사람, 부모 신장과 초경전후의 식사 규칙성, 다이어트 경험, 수면시간, 스트레스, 음주/흡연 여부, 질병력 등에 대한 설문 조사를 시행하였고, 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레에 대한 정보는 건강기록부에서 확보하였다. 상기 대상자 중 건강기록부가 분실된 39명, 초경나이에 대해 응답하지 않았던 29명 및 결석 등으로 조사를 하지 못하였던 42명을 제외한 조사 대상자는 206명으로 선정하였다. 대상자들의 초경연령 평균값(Mean±SD)은 13.0±1.11이었고, 초등학교 4학년부터 고등학교 2학년까지의 초경 이후 신장 성장률은 감소하였으며, 초경연령이 빠른 군이 초등학교 때는 신장에 있어서 우위를 차지하나 고등학교에 오면서 신장은 비슷한 수준이 되었다. 초경후 1-2년 사이에 체중과 흉위의 증가율은 감소하였고, 초경연령이 빠른 군이 초등학교와 고등학교 사이에 체중과 흉위에서 모두 우위를 차지하였다. 본 연구의 결과는, 흔히 이차 성징의 시작 시점 혹은 사춘기의 시작 시점으로 보고있는 초경 연령이 청소년기의 성장과 밀접한 관련성이 있고, 특히 체중과 흉위의 성장 속도와 밀접한 관련성이 있음을 시사한다. To understand the onset of menarche in relation to changes in physical growth that take place during female adolescence, especially the changes in height and weight velocity. The 207 senior in one women high school of Kyongju were investigated in April 3 to 8, 2001. We collected the information, relation in the age at menarche, height & weight of parents, regularity of eating, and obesity diet, duration of sleeping, sickness & stress near age at menarche, by self-recording. The status of height, weight & chest circumference between the 4th grade of primary school and the junior of high school was collected by individual Health Record. The results were followed; The average age at menarche was 12.95±1.11 years old and the most frequent age of menarche is 13 years. After menarche, the velocity of height, weight and chest circumference were decreased. The most rapid group of menarche hold dominant position in height during elementary school. As time passed, they dont hold dominant position in height. The most rapid group of menarche get an advantage in the weight and the girth of chest after elementary school. The height of subjects is directly proportional to the height of their parents. These results suggest that the starting age at menestuation can be closely associated with physical growth and development.

중력가속도가 2차 자녀 성비에 미치는 영향

박종관,황명순 공군본부 의무감실 1991 항공의학 Vol.39 No.1-2

반응성 스퍼터링으로 증착한 ITO 박막의 전기적, 광학적 성질

朴宗寬,吳泰成 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.2

Crystalline phase, electrical resistivity and transmittance of 300 nm-thick ITO films, deposited by reactive sputtering, have been investigated with variation of oxygen content in the sputtering gas and annealing temperature. For the sputter-deposited films, low resistivity and high transmittance suitable for transparent conductive film could be obtained only at very narrow range of oxygen content in the sputtering gas. With annealing at 200∼400。C in (50% Ar+ 50% H₂) atmosphere, however, ITO films sputtered-deposited at oxygen content of 12.5∼50% exhibited electrical resistivity lower than 10­³Ω­㎝ and transmittance higher than 85% suitable for transparent conductive film.

지리학은 환경문제 해결에 기여할 수 없는 과학인가

박종관 건국대학교 이과대학 지리학과 1993 지역과 환경 Vol.- No.11

양성중력가속도가 조종사의 심방이뇨 호르몬(Artrial Natriuretic peptide)에 미치는 영향

박종관,서만옥,설경환,조경우,박병옥 공군본부 의무감실 1991 항공의학 Vol.39 No.1-2

일부 아연광산지역에서 Cadmium이 주민의 건강에 미치는 영향

박종안,한구웅,홍종관,남택승 순천향대학교 1987 논문집 Vol.10 No.1

The cadmium contents of environment and human body were measured for the health status of the residents in the selected area near an old zinc-mining site assuming that cadmium contamination in the environment would affect the health status of the residents and the results were as follows: 1. The cadmium contents of the environment were 0.021±0.012 mg/m3 in the air. 0.019±0.011 mg/ml in the water, 0.382±0.233 mg/g in the rice and 0.342±0.211 mg/g in the tooth. 2. The major complaints of the residents were excessive sputum, dyspnea and pains on both extremities. F드믿 complained more frequently than male in dyspnea, lumbago and pains on both extremities. 3. An assessment of the nutritional health status of residents revealed that for male 8.5% were weak, 10.1% were fat and 32.5% were anemic, while for female 17.6% were weak, 15.3% were fat and 30.1% were anemic. 4. The prevalence rate of hypertension was 152.8?(male; 84.7?. female;200.0?) and the prevalence rate of diastolic hypertension was higher than that of systolic hypertension. 5. The diagnostic variables verifing the assumption mode in this study were blood pressure(0.76, p〈0.05) and E.S.R.(0.57, p〈0.01). From the above results, the environmental cadmium contamination affects the health status of the residents in the area near an old zinc-mining site to a certain extent, but not to a great extent(R2=0.55).

남자 장거리선수의 호흡순환기능과 하지근량에 관한 연구

박재현,박진기,윤종관 東亞大學校附設스포츠科學硏究所 2004 스포츠科學硏究論文集 Vol.22 No.-

The purpose of this study was to investigate cardiorespiratory function and leg muscle mass in long distance runner. Subjects were composed of fourteen young mens that they are middle school and college student They are calssified excellent and normal group according to the record. Body Height and weight were not significant difference. The 1.5km and 10km running record were significantly more fast in excellent group than normal group. O₂max(ml/min) and O₂pulse max were significantly more fast in excellent group than normal group, but O₂max/wt(ml/kg/min) and HRmax were not significant difference. Left ventricular structure and function were more high in excellent group than normal group, but not statistically significant difference. Also Upper and lower leg muscle mass were more high in excellent group than normal group, but not statistically significant difference. In conclusion, although excellent group have the good records than normal group, cardiac structure and function and leg muscle mass as well as body composition were not significant difference. these results 'suggest that long distance running record are decided by other external factors.

SnO₂/Si 移種接合 太陽電池 特性에 관한 硏究

朴鏞寬,李載亨,金正浩,兪榮植 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.1

In this study, the SnO_2/(n)Si solar cell was fabricated by electron beam evaporation method, and their properties were investigated. Also the resistivity and optical transmission of SnO_2 thin film were measured, and the relations between this results and solar cell characteristics were considered, and the following conclusions were obtained. (1) In proportion to increase of substrate and annealing temperature, the conductivity of SnO_2 thin film becomes increasing, but its optical transmission decreases because of increasing optical absorption of free electrons in the thin film. (2) Solar cell characteristics were improved by annealing. But the SnO_2/Si solar cell was deteriorted by heat treatment above 500℃. (3) The optimal outputs of SnO_2/Si solar cell through above investigation were V_sc: 350mV, I_∝: mA/㎠, FF : 0.41, η=4.74%

鐵鋼産業災害에 關한 硏究

朴鍾安,洪種寬 순천향대학교 1984 논문집 Vol.7 No.1

This study was carried out to analyse the industrial accidents which had occurred in four iron and steel making companies during the period of July 1, 1977 to June 31, 1982. The results obtained were as fallows; 1. The frequency rate and the severity rate of injury in the iron and steel making companies were 5.42 and 1.72 respectively. 2. In injury frequency rate (IFR) and injury severity rate (ISR) by age, IFR showed the highest value in the age group of 25~29 years old (7.17) and the lowest value in the age group of under 19 years old, and ISR showed the highest value in the age group of over 40 years old (4.50) and the lowest value in the age group of under 19 years old (0.70). 3. It was found that those who had the longer work experience showed the less IFR and ISR. Particulary, the group with less than 1 year work experience showed the highest value of IFR (9.78) and ISR (2.15). 4. In the time of accident during a day, the highest incidence rate occurred in 16~28 hours as 19.5% of the total accidents and the lowest incidence occurred in 20~22 hours as 2.4%. 5. On the basis of the day of the week, 22%, the highest incidence, of the total accidents occured on Thursday, and 8.5%, the lowest indicence, occurred on Sunday. 6. The monthly highest incidence was observed in July as 15.9% of the total accidents, and the lowest incidence was observed in May as 3.7%. 7. As regards the causes, the accident brought on by power driven machinery showed the highest incidence as 26.8% of the total accidents, and followed by high temperature as 13.3%. and by fall on same level as 9.7%. 8. In the part of body injured, the part of finger showed the highest incidence as 30.5% of the total accidents. In order of high incidence next to the above: the part of foot as 18.2%, and part of face as 12.2% respectively. 9. In the accident frequency by unsafe acts, the accident caused by inattention to footing or surroundings showed the highest incidence as 27.8% of the total accidents. In order of high incidence next to the above: taking unsafe position or posture as 26.2%, failure to secure on warn as 12.6%, and driving errors as 11.1% respectively.