자연과학편 : 장거리(長距離) 선수(選手)의 식이요법(食餌療法) 훈련(訓練)이 운동시(運動時) 혈중(血中) Glucose 농도(濃度)와 기록(記錄)에 미치는 영향(影響)

權泰東(TaeDongKwon),許垘(BokHuh),黃樹寬(SooKwanHwang),朱永恩(YoungEunChoo) 한국체육학회 1984 한국체육학회지 Vol.23 No.2

Effect of diet in general, and glycogen storage in particular on the performance ability of athletes has been well documented. In this study, an effort was directed to further clarify the effect of the body glycogen storage on the blood glucose level and the running record in the long distance runners. Forty-two male high school athletic students of 15 ~19 years of age who are well trained as the long distance runners were selected. The subjects were divided into three groups: i.e, the control, low carbohydrate (LCHO) and high carbohydrate- (HCHO) group. HCHO group was supplied with a high fat and high protein diet for two days with a hard running exercise followed by a high carbohydrate diet for 3 days with a light running erercise. LCHO group received a high fat and high protein diet with a hard running exercise. A long distance running of 1) 20km at a full speed and 2) 10km at a constant speed of 18km per hour was performed. LCHO group performed only10km running. The blood glucose concentration was determined by an enzymatic method, venous blood pH by using the Corning model 175 automatic blood gas analyzer, blood lactate concentration by the method of Barker and Summerson, heart rate by palpating the radial artery.The following results were obtained.1. Blood glucose concentration:After 10km running, both the control and HCHO groups showed increased values in comparison to the resting values immediately and 10 min after exercise, while LCHO group showed lower values than the resting values immediately, 10 and 30 min after exercise. The LCHO group showed values than the control group immediately and 10 min after exercise.After 20km running, the control group showed increased values compared with the resting values during exercise (10km point) but showed decreased values in comparison to the resting values immediately after exercise. The HCHO group showed increased values in comparison to the resting values immediately, 10 and 30 min after exercise. The HCHO group showed higher values than the control group immediately and 10 min. after exercise and the difference was especially remarkable immediately after exercise.2. Blood lactate concentration:After 10kra running, all 3 groups showed increased values compared with the resting values where the LCHO group showed lower values than the control group immediately, 10 and 30 min. After 20km running, both the control and HCHO groups showed increased values comparision to the resting values, where the HCHO showed higher vahaes than control.3. pH of -venous blood:Both the control and HCHO groups showed decreased values in comparison to the resting values during and immediately rafter exercise. The HCHO group showed lower values than control group immediately after exercise.4. Heart irate:After 20km running, both the control and HCHO groups showed increased values compared with the resting values, where HCHO group showed lower values than, the control group immediately, 3 and 5 min after exercise.5. Record:The HCHO group showed shorter values than die control group after 20km running at a full speed.From the above results, we could note that blood glucose level was increased due to the increase of glycogen storage in the body and that subsequently the subjects made a shorter record through the dietary regime.

스포츠 생리학 : 종목별 운동선수 폐기능에 관한 연구 - 검도 , 펜싱 , 씨름 , 조정 대학 선수를 중심으로 -

권태동(TaeDongKwon),박덕일(DeokIlPark) 한국체육학회 1998 한국체육학회지 Vol.37 No.3

본연구는 체력단련이 폐기능에 미치는 영향을 알아보고, 나아가 종목별 선수들의 폐기능을 비교 분석하여 선수군과 비선수군, 그리고 종목별 선수들간에 어떠한 차이가 있는지를 알아보고자 실시하였다. 연구대상으로 운동경력이 5년 이상에 달하는 남자 대학생 검도선수 15명, 펜싱선수 10명, 씨름선수 10명 및 카누선수 9명과, 선수경력이 없고 평소 규칙적으로 운동을 하지 않는 일반학생 10명을 임의 선정하였다. 이들을 대상으로 폐기능 검사를 실시한 후 각 집단간 차이를 비교 분석하여 다음과 같은 결론을 얻었다. 첫째, 정적폐용적에서 폐활량은 집단간에 유의차가 있었으며(p<0.01), 씨름선수군이 검도선수군과 비운동선수군보다 유의하게(p<0.05) 높았다. 흡기예비량과 호기예비량에서는 집단간 유의차가 발견되지 않았다. 1회호흡량은 씨름선수군이 카누선수군 및 비운동선수군보다, 펜싱선수군이 카누선수군 보다, 그리고 검도선수군이 카누선수군보다 각각 유의하게(p<0.05) 높은 것으로 나타났다. 둘째, 동적폐용적에서 노력성 폐활량은 카누선수군이 검도선수군 및 비운동선수군보다 유의하게(p<0.05) 높은 것으로 나타났으며, 노력성 호기량 0.5초값, 1초값 및 1초율은 집단간에 유의차가 없는 것으로 나타났다. 셋째, 노력성 호기유속 0.2-1.2L값, 25-75%값, 25%값, 50%값, 75%값 및 최대호기유속에서는 집단간에 유의차가 없는 것으로 나타났다. 넷째, 노력성 흡기유속 0.5초값은 씨름선수군이 다른 집단보다 유의하게(p<0.05) 높은 것으로 나타났으며, 50%값 및 최대흡기유속은 씨름선수군이 펜싱선수군, 카누선수군 및 비운동선수군보다 유의하게(p<0.05) 높은 것으로 나타났다. 초시흡기량 0.5초값에 대한 초시호기량 0.5초값의 비는 펜싱선수군이 검도선수군 및 씨름선수군보다 유의하게(p<0.05) 높은 것으로 나타났다. 다섯째, 최대환기능은 각 집단간에 유의차가 없는 것으로 나타났으며, 최대환기능 측정시의 호흡수는 검도선수군이 다른 집단보다, 그리고 펜싱선수군, 카누선수군 및 비운동선수군이 씨름선수군보다 유의하게(p<0.05) 높은 것으로 나타났다. 최대환기능 측정시의 평균1회호흡량은 씨름선수군이 다른집단보다 유의하게(p<0.05) 높은 것으로 나타났다. This study was aimed to elucidate the effect of physical fitness training on pulmonary function. 44 healthy male subjects(15 Kumdo players, 10 Fencing players, 10 Ssirum players and 9 Rowing players) who have undergone regular physical training for more than five years were randomly chosen as athletic subjects, and 10 regular students who have not been engaged in any form of regular physical exercise or training were chosen as nonathletic subjects. The measurement results of pulmonary function test were compared among athletic groups by events and nonathletic group. The results were summarized as follows. 1. In static lung volume, VC was significantly(p<0.01) different among each group. Especially Ssirum group was significantly(p<0.05) higher than Kumdo group and Nonathletic group. IRV and ERV showed no significant difference among each group. TV was significantly(p<0.05) different among each group, and Ssirum group was significantly(p<0.05) higher than Rowing group and Nonathletic group. 2. In dynamic lung volume, FVC was significantly(p<0.05) different among each group. Especially Rowing group was significantly(p<0.05) higher than Kumdo group and Nonathletic group. FEV_(0.5), FEV₁ and FEV₁/FVC were not significantly different among each group. 3. FEF_(0.2∼1.2L), FEF_(25∼75%), FEF_(25%), FEF_(50%), FEF_(75%) and PEF were not significantly different among each group. 4. FIV_(0.5) were significantly(p<0.05) different among each group. Especially Ssirum group was significantly(p<0.05) higher than other groups. FIF_(50%) and PIF were significantly(p<0.01, p<0.05 respectively) different among each group. These values of Ssirum group were significantly(p<0.05) higher than those of Fencing group, Rowing group and Nonathletic group. FEV_(0.5)/FIV_(0.5) was also significantly(p<0.05) different among each group. The value of Fencing group was significantly(p<0.05) higher than that of Kumdo group and Ssirum group. 5. MVV was not significantly different among each group. But RR and MTV measured during MVV measurement were significantly(p<0.001) different among each group. Kumdo group was significantly(p<0.05) higher than other groups in RR, and Ssirum group was significantly(p<0.05) higher than other groups in MTV.

운동영양학 : 폴리페놀과 비타민 C 투여가 운동시 흰쥐의 항산화능에 미치는 영향

권태동(TaeDongKwon),최상원(SangWonChoi),이상직(SangJikLee),정관우(KwanWooChung),이수천(SooChunLee) 한국체육학회 2001 한국체육학회지 Vol.40 No.3

본 연구는 폴리페놀과 비타민 C의 투여가 운동으로 유발된 산화 스트레스를 방어하는 항산화제 효과를 검증하여 운동시 영양보조물로서의 효과를 알아보기 위하여 4주 동안 5%의 폴리페놀과 비타민 C를 각각 체중 1㎏당 50㎎을 경구 투여하였다. 도살 전 3일간 모든 쥐에 분당 28m의 속도로 트레드밀에 적응운동을 시켰다. 그 결과 폴리페놀과 비타민 C 투여에 의해 간과 심장에서 MDA 함량의 유의한 감소를 보였으며, 항산화제의 투여에 의한 MDA 함량의 감소 정도는 1회 투여보다는 장기투여의 결과 더욱 효과적인 것으로 나타났으며 폴리페놀 투여로 인한 효과가 보다 현저하였다. 이것은 항산화제의 투여가 간과 근육의 미토콘드리아 마이크로좀에서 지질과산화를 억제하며 hydrogen radical을 lipid free radical에 반응시켜 자동산화의 연쇄작용이나 지질과산화의 억제를 유도하는 것을 의미한다. 한편, 간장의 항산화효소인 SOD함량은 폴리페놀과 비타민 C 투여에 의해 유의하게 증가하였으며, 특히 폴리페놀 투여로 인한 효과가 보다 현저하였다. 이상의 결과에서 비타민 C와 최근 새롭게 대두되고 있는 폴리페놀의 장기투여가 운동으로 인한 체내의 항산화능에 긍정적인 효과를 가져오는 것으로 나타나 운동수행능력 증가를 위한 영양보조물로서보다 체계적인 연구가 이루어지리라 사료된다. Polyphenol and vitamin C are known to prevent lipid peroxidation during exercise. Among the known polyphenol, the polyphenol extracted from apple as used has the similar effect of antioxidant. Therefore we examined the effects of acute or chronic polyphenol or vitamin C on antioxidants enzymes activities in rats. Rats were exercise training on the treadmill before 3 d of sacrifice for treadmill adaptation. They were administered 5 % of polyphenol and 50㎎ of vitamin C before the exercise at the final day of the experiment in acute administration group (APA or AVA) and the same amount of supplements was administered for 4 wk (CPA or CVA). Control group was administered the same amount of water at the same time point (NA). One-way ANOVA was performed as the statistical analysis. MDA concentrations in liver, heart, soleus muscle, gastrocnemius red and white muscle were significantly decreased by polyphenol or vitamin C administration. In addition, chronic administration has the strong effect compared with acute administration SOD concentrations in liver and heart were significantly increased by polyphenol or vitamin C administration. However, skeletal muscle SOD concentrations were not statistically significant. These results suggested that endurance exercise training reduced the risk of lipid peroxidation during exercise in rats. Moreover, acute or chronic administration of polyphenol and vitamin C increased the antioxidative activity that prevent the lipid peroxidation during exercise in rats.

식이제한과 운동부하가 식욕조절관련 호르몬 및 LPL활성에 미치는 영향

권태동(TaeDongKwon),김기훈(KiHoonKim) 한국체육학회 2012 한국체육학회지 Vol.51 No.1

본 연구에서는 실험동물을 이용하여 5주간의 반복적인 금식 및 운동부하가 식욕조절 호르몬 및 지방조직에서의 LPL 활성에 어떠한 영향을 미치는가를 알아보고자 하였다. 이를 위해 대조군(Control, CON; n=8)과 24시간의 반복금식을 유도한 식이제한군(repeated fasting and refeeding , RFR; n=8)군, 식이제한+운동병행군(RFR+EX)군 그리고 식이제한군의 50%에 해당하는 사료를 매일 제공한 대조식이군(pair fed to RFR, PF; n=8)으로 구분하였다. 그 결과 체중과 체지방에서 대조군에 비해 식이제한군에서 모두 유의한 감소를 보였으며, 운동병행군(RFR+EX)에서 가장 낮게 나타났다(p<.05). 혈중 렙틴의 농도 변화도 대조군에 비해 식이제한군에서 모두 유의하게 감소하였으며, 운동병행군(RFR+EX)에서 가장 낮게 나타났다(p<.05). 그러나 혈중 그렐린의 농도 변화에서는 이와 상반되어 식이제한군에서 모두 대조군에 비해 높게 나타났다(p<.05). 또한 지방조직에서의 LPL 활성은 대조식이군(PF)에서만 다른 군에 비해 유의하게 낮게 나타났다(p<.05). 한편, 식욕조절호르몬과 지방조직에서의 LPL 활성간 상관관계를 살펴본 결과 렙틴과 그렐린은 서로 반비례하는 상관관계(r2=0.2383)를 보인 반면, LPL 활성과 식욕조절관련 호르몬간의 상관성은 없었다. 결론적으로, 본 연구 결과 5주간의 반복적 금식을 통한 식이제한과 운동훈련의 병행은 지방조직에서 LPL 활성을 감소시키며 식욕조절호르몬인 혈중 렙틴과 그렐린의 상호작용을 통해 체중 및 체지방의 감소를 유도하는 것으로 나타났다. The purpose of this study was to identify the effects of activity of lipoprotein lipase(LPL) and level of appetite control hormone for repeated feeding and exercise during five weeks. Thirty-two Sparague Dawley male rats were divided into 4 groups as follows: control group(CON, n=8), repeated fasting and refeeding group(RER, n=8), RER+exercise group(RER+EX, n=8), 50% volume of pair feed as RER group(PF, n=8). The results were as follows: There was significantly decreased in body weight and fat mass compared to control group(p<.05). The level of leptin was more significant decreased at three groups than control group(p<.05). The level of ghrelin was more significant increased the three groups than control group(p<.05). It is exhibit opposite tendency between the level of leptin to ghrelin. The activity of LPL was significantly decreased only PF group compared to other groups. Meanwhile there was inverse proportion LPL activity to appetite control hormone(r2=0.2383). However there was no correlation LPL activity to appetite control hormone. Consequently, The results were as follows: There was decreased LPL activity in adipose tissue by food restriction and repeated fasting and refeeding including exercise for five weeks. and there was induced to decrease body weight and fat(%) by correlation roles of leptin and ghelin.

자연과학편 : 운동부하가 흰쥐의 골격근내 지질대사율과 UCP-3 및 CPT-1 단백질 발현에 미치는 영향

권태동(TaeDongKwon),김기훈(KiHoonKim),서혜정(HeaJungSuh) 한국체육학회 2006 한국체육학회지 Vol.45 No.1

The purpose of this study was to investigate the gene expression related with lipid metabolism according to intensity and duration of treadmill exercise in rats. Sprague-Dawley rats were randomly divided into control(CON), high -intensity(H-EX) and low-intensity exercise(L-EX) groups. Rats in L-Ex group were forced to run on the treadmill at the speed of 5m/min for initial 10 min and 10m/min for next 20 min. On the other hand, rats in the H-Ex group were forced to run on the treadmill slope 0 at the speed of 16m/min for initial 10 min, 22m/min for next 20 min, and 25m/min for last 40 min.Expression of UCP3 of the WG and RG in L-Ex and H-Ex groups was increased compared with control immediately after exercise. Expression of UCP3 of the WG and RG in the H-Ex group was higher than in the L-Ex group.CPT-1 expression of the WG and RG in the H-Ex group was increased immediately and 6 hr after exercise compared with control. CPT-1 expression of the RG in the H-Ex group was highest 6hr after exercise. CPT-1 expression of the RG and WG in the L-Ex group was not differ among groups.Palmitate oxidation rate of the RG and WG was increased 0, 6 and 12 hr after exercise in the H-Ex group, and 0 and 6 hr after exercise in the L-Ex group compared with control. Palmitate oxidation rate of the H-Ex group was higher than in the L-Ex group 0, 6 and 12 hr after exercise in RG, and 0 and 6hr after exercise in WG.In the summary, gene expression of UCP3 and CPT1 that related with lipid metabolism was not significantly affected during 0 to 60 min recovery time by low-intensity exercise, but effected by high-intensity exercise.In conclusion, exercise intensity and amounts might be have very important role to regulate gene expression related with metabolism.

반신욕이 최대운동 후 피로회복 및 혈중지질에 미치는 영향

권태동(TaeDongKwon),김기훈(KiHoonKim),배재화(BaeJaeHwa) 한국체육학회 2010 한국체육학회지 Vol.49 No.5

본 연구는 남자 대학생을 8명을 대상으로 최대운동 후 회복과정에서 반신욕이 피로회복과 혈중지질에 어떠한 영향을 미치는지를 알아보는데 그 목적이 있다. 이를 위해 점증적 최대운동 후 회복기에 반신욕 실시에 따른 대상자들의 혈중 피로물질과 지질성분의 변화양상을 분석한 결과 최대운동 후 대상자들의 혈중 피로물질의 농도변화는 운동 후 5분에까지 두 군에서 모두 유의하게 증가하였으며 이후 회복기 120분에 걸쳐 안정시 수준으로 회복되었다. 피로물질 중 혈중 젖산과 암모니아의 경우 반신욕실시군이 미실시군에 비해 보다 빠른 감소율을 보여 반신욕실시가 혈중 피로물질의 신속한 제거를 도울 수 있을 것이라 생각되어진다. 또한, 최대운동 후 대상자들의 혈중 지질의 농도변화는 중성지방의 경우 반신욕 실시군과 미실시군에서 모두 안정시에 비해 운동직후 유의하게 증가하였으며, 이후 회복기 120분에 걸쳐 안정시 수준으로 회복되었다. 그러나 혈중 콜레스테롤의 농도변화에서는 최대운동에 따른 변화는 나타나지 않았다. 더욱이 이들 혈중 지질성분들은 회복기에 두 군간 차이를 보여주지 않아 운동 후 반신욕 실시에 따른 효과를 확인하지 못하였다. The purpose of the study was to find the effect of half-bath on fatigue recovery and blood lipids after maximal exercise. Subjects were healthy and young men of college students. The subjects of present study were divided into 30 min half-bath recovery group and non-half-bath group. All the experimental conditions were continued until subjects stopped because of fatigue. After maximal exercise were measured repeatedly to get results on the change of blood fatigue elements and blood lipids. Fatigue elements change of hole of convalescence displayed recovery ability that lactic acid and ammonia are more fast in half-bath group after maximal exercise. but inorganic phosphate concentration was no difference. Blood lipids change of hole of convalescence displayed recovery ability that on the whole more or less in half-bath groups after maximal exercise but there was no statistical difference. In conclusion, At the period of recovery after maximal exercise, Performance of half-bath will be help in recovery of fatigue according to the time of removal and removal rate were improved.

체육측정평가 : 우리나라 체육고등학교 학생의 운동종목별 신체조성 및 형태의 특성

이수천(SooChunLee),권태동(TaeDongKwon),김헌경(HunKyungKim) 한국체육학회 1996 한국체육학회지 Vol.35 No.4

우리나라 체육고등학교 학생의 운동종목별 신체조성과 형태적 특성을 알아보기 위하여 전국 10개 체육고등학교에 재학하고 있는 남자 1.366명과 여자 504명을 대상으로 체격(신장, 좌고, 체중), 주위 (상완위, 전완위, 흉위, 복위, 둔위, 대퇴위, 하퇴위, 지극), 피하지방후(상완전부, 상완후부, 가슴, 옆구리, 복부, 견갑골하부, 장골능상부, 대퇴전부, 대퇴후부, 하퇴후부), 신체조성(체지방률, 체지방량, 제지방량, 총수분량) 등을 측정하였고 각 학교의 영양섭취 칼로리를 비교하였다.1. 체격(신장, 좌고, 체중), 주위(흉위, 복위, 둔위), 피하지방후(상완배부, 복부), 신체조성(체지방률, 체지방량, 제지방량) 등에서 남녀 체조선수는 다른 종목의 선수들보다 유의하게 적게 나타났다.2. 남자 배구선수들과 배드민턴 선수들은 다른 종목 선수들보다 신장이 크게 나타났다.3. l00m달리기(남자 2항목, 여자 8항목), 높이뛰기(여자 2항목), 창던지기(남자 2항목, 여자 9항목), 역도(남자 20항목, 여자 1항목), 레슬링(남자 20항목) 등에서 경기 기록과 조사항목간의 상관이 있는 것으로 나타났다.4. 신장, 체중, 주위, 피하지방후, 체지방률 등에서 남자 공기소총은 조사항목에 큰 영향을 받는 것으로 나타났고, 여자는 400m달리기와 높이뛰기에서 큰 영향을 받는 것으로 나타났다.5. 신장, 체중, 주위, 피하지방후, 체지방률 중에서 주위가 경기기록과 가장 높은 공헌도를 나타내었다.6. 각 학교의 영양섭취량은 단백질이 약 22∼28%, 지방이 약 21∼28%, 탄수화물이 약 51∼54%로 나타났다. 3대 영양소의 비는 보통이었으나 전체 섭취 칼로리가 2.010∼2.676㎉로 낮게 나타났다. Athletics high school students`(male=1,366, female=504) physique, girth, skinfolds thickness, body composition and nutrition intake were investigated. The followings were results.1. The physique(height, sitting height, weight), girth(chest, abdomen, hip), skinfolds thickness(upper arm, abdomen), body composition(%fat, fat mass, fat free mass) of male and female gymnastics players were significantly lowered than that of other athletics players.2. Male volleyball and badminton players were taller than other athletics players.3. 100m running(2 items for male, 8 items for female), high jump(nothing for male, 2 items for female), javelin throwing(2 items for male, 9 items for female), weight lifting(20 items for male, 1 item for female) and wrestling(20 items for male) tended to have a correlation with record.4. Height weight, girth, skinfolds thickness, %fat influenced male`s air rifle for 50.38%(highest) and archery for 6.86%(lowest), for the female, 400m running for 85.81%(highest) and high jump for 12.48%(lowest) respectively.5. Among height, weight, girth, skinfolds thickness, %fat, the girth tended to highly contribute the record of athletes.6. The amount of the nutrition intake of each school was P(22-28%), F(21-28%), and C(51-54%). The rate of PFC was normal. Overall intake was 2,010-2,676Kcal which amount was low relatively.

자연과학편 : Track 경기(競技) 종목별(種目別) 운동부하후(運動負荷後) 심박수(心搏數) 및 혈압(血壓)의 변화(變化)

黃秉式(ByungSikHwang),權泰東(TaeDongKwon),朴德一(DeokIlPark),黃樹寬(SooKwanHwang) 한국체육학회 1984 한국체육학회지 Vol.23 No.2

In order to study the changes of heart rate and blood pressure after exercise in different track events, one hundred and one subjects aged between 14~18 years were divided into athletic and non-athletic groups. The exercise performed was 100m, 200m, 400m, 800m, 1,500m and 5,000m running at full speed on the track respectively.The results obtained are summarized as follows:The heart rate at rest was significantly lower in athletes than in non-athletes, especially in 200m, 400m, 800m, 1, 500m and 5, 000m running. After the exercise, athletes showed lower values and made a more rapid recovery than non-athletes in 400m, 800m, 1, 500m and 5, 000m running. In comparison among different track events, non-athletes showed higher values in 1, 500m and 5, 000m but athletes showed higher values in 200m and 400m than in the other events.The systolic blood pressure at rest showed no significant difference between two groups. But after the exercise, athletes showed significantly higher values and made a more rapid recovery than non-athletes. In comparison among different track events, both groups showed higher values in 800m than in the other events.The diastolic blood pressure after the exercise was higher in 100m, 200m,400ra and 800m but lower in 1,500m and 5, 000m in athletes than in non-athletes. In comparison among different track events, both groups showed higher values in 200m and 400m than in the other events.The pulse pressure at rest showed no significant difference between two groups except in 800m. In 800m, athletes showed significantly lower values than non-athletes at rest. After the exercise, athletes showed higher values in all events and also made a more rapid recovery than non-athletes. In comparison among different track events, both groups showed higher values in 800m, 1, 500m and 5,000m and especially in 800m.The mean arterial pressure at rest was higher in athletes than in non-athletes. Also after the exercise, athletes generally showed higher values in all events and especially significantly higher values in 200m 400m and 800m than non-athletes. In comparison among different track events, both groups showed higher values in 200 m, 400m and 800m than in the other events.

스포츠생리학 : 인체계측변인을 이용한 대퇴사두근의 근량 산출

김훈(HoonKim),권태동(TaeDongKwon),안병철(ByungCheolAhn) 한국체육학회 1999 한국체육학회지 Vol.38 No.3

본 연구는 성인 남자를 대상으로 인체계측변인을 이용 대퇴사두근의 근량을 추정하는 추정모형식을 고안하는데 목적이 있다.대퇴사두근의 근량에 대한 기준값(실측값) 설정을 위하여 MRI(1.5 Tesla) 촬영(RT 600msec, ET 12msec)을 Slice간격 10㎜, 두께 0㎜로 연속 횡단 촬영하였다.또한 근량을 가장 잘 예측할 수 있는 추정모형식을 고안하기 위하여 인체계측변인 15개 항목을 측정하여 다중 회귀분석을 수행하였으며 그 결과 대퇴사두근의 근량을 추정하기 위한 회귀모형식에 나타난 예측변인으로는 S₂, C₃, C₄, CL, KB가 이용되었으며, 고안된 추정모형식<식 1>은 대퇴사두근의 근량에 대하여 91%(R=.95, R²=.91, SEE=66.79, P< .001)의 설명력을 나타내었다. 또한 고안된 추정모형식의 타당도를 검증하기 위하여 연구 대상자 18명을 컴퓨터 난수표 프로그램을 이용 A그룹(9명)과 B그룹(9명)으로 구분하여 집단내 교차타당도로 검증한 결과 MRI에 의해 산출된 실측값 2092.70±214.53g과 모형식에 의해 추정된 추정값 2062.60±226.98g간의 오차는 30.10±118.04g으로 t-검증한 결과 통계적으로 유의한 차이가 없는 것으로 나타났다(r=.87, P >.05).따라서 인체계측변인에 의해 고안된 대퇴사두근의 근량 추정모형식은 일반화 될 수 있는 것으로 생각된다. The purposes of this investigation was to drive and validate circumference and anthropometric equations for estimating muscle mass of thigh muscles. A total of 18 subjects were involved in this study; nine being in the experimental group and nine in the testing group. For the subjects in the experimental group, forty-five to fifty-five MRI slices at sagittal planes were obtained with an interval of 10㎜. Also, six to eight photographs of coronary planes were taken for the same subjects in order to calculate PCSA(physiological cross-sectional area). With the examination MRI slices and coronary plane photographs, multiple-regression analyses were used to drive equations for predicting thigh muscle mass of dominant limb from the anthropometric dimensions on a random sample of 18 of subjects.Cross-validation(CV) analyses were performed for each equation on;(a) the dominant thigh of the derivation group(n=9)(b) the dominant thigh of the CV group(n=9) Using the multiple-regression analyses(stepwise), the following prediction equation were obtained for muscle mass. The important predicting variables in the two equations are from X1 to X5. The results of the following have been drawn.Where; constant = -2025.33076,b₁ = -40.76066, X₁ = the skinfold of proximal 2/5 thigh,b₂ = 104.87551, X₂ = the circumference of mid thigh,b₃ = -55.12454, X₃ = the circumference of proximal 4/5 thigh,b₄ = -54.98727, X₄ = calf length, andb₅ = 411.09652, X₅ = the breadth of knee.The estimating equation were resulted in the explanation of 91%(R=.95, R²=.91, SEE=66.79, P<.001). From the results of CV, there was no significant(P=,05) difference between value of MRI and estimating equations.It was concluded that the anthropometric equation developed can be used to reasonably predict muscle mass, in that it is the only ones which were developed based on in vivo-method(a live human body).

자연과학편 : 감초추출물 섭취가 흰쥐의 운동 중 혈중 지질농도에 미치는 영향

류승필(SungPilRyu),권태동(TaeDongKwon),여윤기(YunGhiYeo),김병성(ByungSungKim),이수천(SooChunLee) 한국체육학회 2006 한국체육학회지 Vol.45 No.1

Licorice-root-extracted food components are little known about its functions on blood lipids and antioxidant defense system during exercise or normal condition in human and rodents. Therefore, in this experiment, two extracted components, which glabrol and glabridin are used as the supplement. 18-Sprague Dawley male rats were used as a subjected and were ingested 50 mg/kg of each supplement. Rats were exercise on the moter-driven treadmill final speed at 27 m/min for four weeks. Stored fats and blood glucose, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), triglyceride (TG) were analyzed by enzymatic methods and low-density lipoprotein cholesterol (LDL-C) was calculated by the reference. One-way analysis of variance was performed to comparing mean difference. Glabridin ingestion reduces fat accumulation, LDL-C, atherogenic index (AI) and the supplements lowers TG concentration, significantly (p<.05). These results suggested that Licorice-root-extracted food components ingestion might prevent geriatric diseases with exercise training in trained rats.