항정상태 산소소비량 예측공식의 비교분석

김시덕,이덕분,이용수,이승균 대한스포츠의학회 1997 대한스포츠의학회지 Vol.15 No.2

The purpose of this study was to compare ACSM and Latin equations for predicting steady-state oxygen uptake with actual oxygen uptake. The subjects were 32 healthy males whose are 15 students and 17 school personnel at Sejong University. Subjects were requested not to eat for 4 h prior to cycle ergometry testing. Subjects were tested by using a Quinton metabolic cart to measure oxygen uptake. The metabolic cart was calibrated before each test according to the Quinton Operating Manual using a reference gas of known concentration. Steady-state oxygen uptake was measured while subjects pedalled at four different workloads: different workloads: 0, 300, 600, 900 kgm/min. Each stage of testing (at each workload) lasted 5 min. The subjects were asked to pedal to pedal at a constant rate (60 rpm) throughout all workloads. A one-way ANOVA with repeated measures was used to test differences between actual and predicted values. Results indicated that the ACSM equation significantly(p<0.05) underestimated oxygen uptake at all four workloads. The Latin equation, by contrast, correctly predicted oxygen uptake at 300, 600, and 900 kgm workloads except at the 0 kgm workload. These result suggest that the Latin equation is more accurate than the ACSM formula for estimating oxygen uptake of loaded cycling. To predict the amount of oxygen uptake according to the each workload and body weight, the new regression equation was calculated by regression analysis. The regression equation was follows; VO_2(ml/min) = (kgm/min 1.9 ml/kgm)+(3.3 ml/kg/min kg body weight)+(225 ml/min) The New equation correctly predicted oxygen uptake at the 300, 600 and 900 kgm workloads except at the 0 kgm workload.

스마트워치 기반 최대산소섭취량 측정 알고리즘 개발 예비연구: 사관생도를 대상으로

조원제,문준배,강원구 한국웰니스학회 2022 한국웰니스학회지 Vol.17 No.3

This study was conducted to develop a function that allows individuals to easily measure maximum oxygen uptake through a smartwatch in the field. For this experiment, Samsung Galaxy Active2 smartwatch which is commonly used model is equipped with a maximum oxygen uptake measurement function. In order to compare and analyze the developed smartwatch function, an experiment was conducted on 20 adult men and women in their 20s. First of all, a 3 km running test was conducted to verify the GPS function. As exercise methods for measuring maximum oxygen uptake, 12 minute running and 1-mile walking test were conducted. In order to verify the reliability of the GPS function, the actual running time after 3 km running and the time recorded through the smartwatch were compared and analyzed. In order to verify the reliability of the maximum oxygen uptake measurement, the maximum oxygen uptake result values obtained through the grade exercise test(GXT) and smartwatch was compared after 12 minutes running and 1-mile walking. As a result, in the 3 km running experiment, there was no statistically significant difference between the two result values, and the validity was 0.75. Also, there was no statistically significant difference between the result value measured through GXT and the result value of the maximum oxygen uptake measured through the smartwatch, and the validity was 0.91 for 12 minute running and 0.90 for 1-mile walking. Therefore, it was found that the smartwatch's maximum oxygen intake measurement function developed for people in their 20s was reliable. 이 연구는 최대산소섭취량을 측정하기 위한 간접적 추정방법을 스마트워치 알고리즘으로 개발하여 현장에서 개인 스스로 쉽게 측정하기 위해 시도하였다. 스마트워치 기능을 개발하기 위해 일반적으로 사용하고 있는 삼성 겔럭시 엑티브 2 스마트워치에 최대산소섭취량 간접측정방법을 알고리즘으로 개발하였다. 최대산소섭취량 측정방법은 가장 신뢰도가 높은 12분 달리기와 1-mile 걷기 방법으로 선정하였다. 개발된 스마트워치 기능을 비교분석하기 위해 20대 성인 남녀 20명을 대상으로 3km 달리기, 12분 달리기, 1-mile 걷기를 측정하였다. 우선 스마트워치 GPS센서의 신뢰도를 검증하기 위해 3km 달리기는 실제 달린 거리와 개발한 스마트워치를 통해 3km를 달린거리에 대한 시간을 비교분석하였고, 최대산소섭취량의 방법에 대한 신뢰도를 검증하기 위해 운동부하검사를 통해 얻은 최대산소섭취량과 스마트워치 알고리즘으로 구현된 12분 달리기와 1-mile 걷기 후 얻은 최대산소섭취량을 비교분석하였다. 그 결과 3km 달리기는 기록에서 통계적 유의한 차이가 나타나지 않았고, 타당도는 0.75로 나타났다. 운동부하검사와 스마트워치를 이용해 12분 달리기, 1-mile 걷기를 실시하여 얻은 최대산소섭취량은 통계적 유의한 차이가 나타나지 않았고 타당도는 12분달리기 0.91, 1-mile 걷기는 0.90으로 나타났다. 따라서 20대 젊은 성인에게 이 최대산소섭취량 측정 스마트워치 알고리즘은 도입이 가능할 것이다.

대사증후군 청소년들의 태권도 수련이 최대산소섭취량과 대사증후군 지표에 미치는 영향

박상갑 ( Sang Kab Park ),장재희 ( Jae Hee Jang ),김은희 ( Eun Hee Kim ),권유찬 ( Yoo Chan Kwon ) 대한무도학회 2009 대한무도학회지 Vol.11 No.3

이 논문의 목적은 대사증후군 청소년을 대상으로 12주간의 태권도 수련을 실시하여 대사증후군 위험지표, 혈청 지질, 최대산소섭취량의 변화를 연구하는데 있다. 대상자는 대사증후군 청소년 30명을 태권도 수련군 15명, 대조군 15명 무선배치 하였다. 태권도 수련은 평균 운동강도 HRR 60~70%로1회 60분, 주 5회, 12주간 실시하였으며 다음과 같은 결과를 나타내었다. 태권도 수련군에서 제지방량, 허리와 엉덩이 둘레 비율, 그리고 최대산소섭취량이 그룹과 시기간의 상호작용에서 유의한 차이가 나타났으며 대사증후군 위험지표들에 있어서는 허리둘레, 중성지방, HDL 콜레스테롤과 수축기 혈압이 그룹과 시기간의 상호작용에서 유의한 차이가 나타났다. 또한 최대산소섭취능력에 따른 대사증후군 위험지표들의 수준을 비교해본 결과 최대산소섭취 능력이 낮은 그룹보다 높은 그룹에서 대사증후군 위험지표들의 수준이 HDL 콜레스테롤은 높게 나왔으며 나머지 인자들은 낮은 것으로 나타났으며 특히 허리둘레, 혈당, 중성지방과 HDL 콜레스테롤은 그룹 간에 유의한 차이를 나타내었다. 따라서 규칙적인 태권도 수련은 대사증후군 청소년들의 신체구성과 최대산소섭취능력의 향상과 대사증후군 위험지표 개선에 긍정적인 영향을 준 것으로 나타났으며 특히 높은 최대산소섭취능력은 대사증후군 위험지표와도 밀접한 관련이 있는 것으로 나타났다. 그러므로 대사증후군 청소년들은 심폐체력을 향상시킬 수 있는 태권도 수련과 같은 규칙적인 운동을 반드시 실시하여야 하며 이는 대사증후군을 예방하고 개선하는데 도움을 줄 수 있을 것이라 사료된다. The study aims to examine the changes in relative risk of the metabolic syndrome, plasma lipid levels, and maximal oxygen uptake by performing a 12 weeks taekwondo training targeting adolescents with the metabolic syndrome. The subjects were 30 adolescents with the metabolic syndrome, and they were randomly assigned with 15 taekwondo training group members and 15 person control group members. Taekwondo training performed five times a week for 60 minutes of each time, and the results of test with the average exercise intensity HRR 60~70% for 12 weeks. The results were as follows. In the taekwondo training group, there was a significant difference in lean body mass, the ratio of waist and hip, and the interactions between the group and time in terms of the maximal oxygen uptake. As to relative risks of the metabolic syndrome, waist circumference, triglycerides, HDL-cholesterol, and systolic pressure showed a significant difference in interactions between the group and time. In addition, as the result of comparing the level of relative risks of the metabolic syndrome according to maximal oxygen uptake, the level of relative risks of the metabolic syndrome was excellent in the group with higher maximal oxygen uptake, and especially there was a significant difference between groups in terms of waist circumference, glucose, triglycerides, and HDL-cholesterol. Therefore, the regular taekwondo training had a positive impact on improvement body composition and maximal oxygen uptake in adolescents with metabolic syndrome as well as reduction in relative risks of the metabolic syndrome. In particular, the excellent maximal oxygen uptake was closely related to the relative risks of the metabolic syndrome. Accordingly, adolescents with the metabolic syndrome should exercise like taekwondo to improve their cardiopulmonary fitness, and it will be helpful to prevent and improve the metabolic syndrome.

유가식 배양에서 재조합 대장균으로부터 Interferon ${\alpha}$-1 생산에 산소 공급이 미치는 영향

이종길,문석영,김영준,신철수,구윤모,Yi, Jong-Ghil,Moon, Seok-Young,Kim, Young-Jun,Shin, Chul-Soo,Koo, Yoon-Mo 한국미생물·생명공학회 2007 한국미생물·생명공학회지 Vol.35 No.3

산소를 많이 소비하는 발효공정일수록 배양액중의 용존산소의 농도가 목적생산물의 생산성에 많은 영향을 주는 경우가 많다. 때문에 고농도 발효에 앞서, 발효조의 sparging hole로부터 임펠러 높이에 따른 산소전달 능력을 알아본 결과 공기공급이 1 vvm, 교반속도가 600 rpm에서 산소전달계수($K_La$)는 2.67($min^{-1}$)으로 가장 높았다. 배양 시 용존산소 농도를 20% 이상 유지시켰을 때 온도에 따른 k6ub/IFN-${\alpha}1$ 생성은 $30^{\circ}C$에서 세포증식을 하고 $25^{\circ}C$에서 IPTG로 Induction 하였을 때 발현율이 6.43mg/ml로 total protein의 37%로 가장 많은 양이 발현되는 것을 알 수 있었다. 용존산소 농도에 따른 k6ub/IFN-${\alpha}1$의 발현양은 용존산소 농도가 35%일 때 가장 높은 수율을 나타냈다. 용존산소량은 산소소비 속도를 측정함으로써 정확한 임계점을 찾을 수 있었는데 용존산소량이 35% 유지될 때 산소 전달 속도와 비교하여 가장 적당한 산소공급량임을 확인할 수 있었다. In order to achieve high-level expression of interferon-${\alpha}1$ (IFN-${\alpha}1$) during fed-batch fermentation of recombinant E. coli, effects of oxygen supply and induction temperature on the expression of recombinant proteins were evaluated. Supplementation of oxygen and its transfer into cells is one of the most important parameters involved in the design and operation of mixing-sparging equipment for bioreactors. Generally, higher oxygen supply stimulates cell growth of aerobic microorganism and consequently the amount of products is increased. In this study, the optimum aeration strategy for the higher production of IFN-${\alpha}1$ during fed-batch fermentation of recombinant E. coli was surveyed. The growth of the cells was also monitored with four different concentrations of dissolved oxygen (DO; limiting, 20%, 35%, 50%) conditions. The DO was controlled by varying aeration rates of air and pure oxygen. Oxygen uptake rate (OUR) and specific oxygen uptake rate (SOUR) were evaluated and compared for the enhanced growth and induction of the cells and IFN-${\alpha}1$, respectively. We confirmed that increased DO by additional oxygen supply, up to 35%, can improve the production of IFN-${\alpha}1$ during the fermentation.

청소년 대상의 20 m 왕복오래달리기 검사를 통한 최대산소섭취량 추정식 개발

이온,정진욱 한국운동생리학회 2019 운동과학 Vol.28 No.2

PURPOSE: The purpose of this study was to investigate the validity of the 20 m PACER and to develop accurate and practical prediction models of maximal oxygen consumption using 20 m PACER. METHODS: In total 407 (male 207, female 200) in middle and high school students participated in this study. Maximal oxygen uptake was measured using the maximal-graded exercise treadmill test. Sex, age, and anthropometrics variable were measured as potential predictors. Each test was conducted within a week interval, ensuring sufficient rest. Correlation analysis was performed to investigate the validity of 20 m PACER. Regression analysis was performed to develop the maximum oxygen uptake prediction equation using the 20 m PACER. The accuracy of prediction models was evaluated using R2, standard error of estimate (SEE), mean difference (MD), and limit of agreement (LoA%) against a criterion-measured of maximal oxygen uptake. RESULTS: 20 m PACER was respectively .675 (.001) in male students .585 (.001) in female students showed reasonable validity. The equation of the following was developed (R2=0.77; SEE=3.58): VO2max=53.550+0.169 (20 m PACER)-0.333 (%body fat)+2.276 (sex)-0.080 (height). Gender has a value of 0 for men and 1 for women. CONCLUSIONS: The prediction models included 4 variables as significant predictors of maximal oxygen uptake and had acceptable accuracy in a large sample of South Korean adolescent. Therefore, developed equation in this study is recommended for better estimation of cardiopulmonary fitness of middle and high school students.

철농도와 산소분압에 반응하는 황색 포도구균의 세포벽 단백질

이승일,임용,신성희 대한감염학회 2001 감염 Vol.33 No.4

목적 : 황색포도구균의 철흡수기전의 활성의 배지내 균증식에 많은 영향을 미칠 뿐 아니라 인체 체액내에서의 균증식에도 많은 영향을 미친다. 철과 산소는 여러 가지 세균 대사과정에서 서로 밀접하게 관련되어 있으므로 본 연구에서는 철농도와 산소분압의 변화하는 황색 포도구균의 세포벽 단백발현 양상을 관찰하고자 하였다. 방법 : 철흡수기전의 활성이 낮은 SR-1 돌연변이주를 streptonigrin에 반복적으로 노출시킴으로서 표준균주인 모균주 ATCC 6538 균주로부터 분리하였다. 이 두 균주를 철이 풍부한 배지와 결핍된 배지에서 호기적, 미호기적, 혐기적으로 배양하여 얻은 균침사에서 세포벽 단백질을 분리하였고 분리된 단백은 SDS-PAGE 후 Coomassie염색하여 관찰하였다. 결과 : 철이 풍부한 배지에서 뿐 아니라 철이 결핍된 배지에서도 혐기적으로 배양할 대보다 호기적으로 배양할 때 두 균주 모두에서 더 많은 세포벽 단백들이 발현되었다. 그러나 모균주의 세포벽 단백발현에 비해 SR-1 돌연변이주의 억제는 철이 풍부한 배지에서보다 철이 결핍된 배지에서 현저하하였다. 철이 �쪄絹�배지에서 호기적으로 배양하였을 때 더 많이 발현된 약 88, 55, 39, 36, 35, 33, kD의 세포벽 단백들은 철에 의해 억제되고 산소에 의해 유도되는 세포벽 단백들로 다른 연구자들에 의해 보고된 철억제성 단백들과 일치하였다. 결론 : 황색 포도구균의 세포벽 단백발현은 철농도와 산소분압의 동시 그리고 각각 변화에 의해 영향을 받았다. 황색 포도구균의 철흡수기전의 활성은 철이 풍부한 배지에서 보다 철이 결핍된 배지에서 세포벽 단백발현에 더 많은 영향을 미쳤다. 인체 환경이 철이 상대적으로 결핍된 환경임을 감안하면 철에 의해 억제되고 산소에 의해 유도되는 세포벽 단백들이 인체 감연시에 체액내에서 발현되는 단백들(항원)일 가능성을 보인 결과라 생각된다. Background : We previously reported that activity of iron-uptake systems (IUS) influenced on the growth of Staphylococcus aureus in laboratory medium and body fluids according to the iron and oxygen concentrations, which they are closely related each other in several microbial metabolism. In the present study, we tried to investigate the profiles of cell wall proteins of S. aureus, according to the change of iron and oxygen concentrations. Methods : SR-1 strain, whose IUS are defective, was isolated from the standard strain ATCC 6538 by repeated exposure against streptonigrin. These two strains were cultured under the aerobic, microaerobic and anaerobic conditions in the iron-sufficient BHI and iron-depleted BHI, respectively. Cell wall proteins were visualized by Coomassie staining after SBS-PAGE. Results : Cell wall proteins of the both strains were expressed more than under the aerobic condition than under the anaerobic condition in the iron-sufficient medium as well as in the iron-deficient medium. However, expression of cell wall proteins of SR-1 strain was markedly inhibited compared to that of parental ATCC 6538 strain, especially in the iron-deficient medium. Among the proteins more expressed under the aerobic culture condition in the iron-deficient medium, about 88, 55, 39, 36, 35 and 33 kDa of proteins were iron-repressible and oxygen-inducible, and corresponded to the iron-repressible proteins which other researchers reported. Conclusion : Expression of cell wall proteins of S. aureus was affected by simultaneous and respective change of iron and oxygen concentrations. Activity of IUS influenced more on the expression of cell wall proteins of S. aureus in the iron-deficient environment than in the iron-sufficient environment. These results suggest the possibility that the iron-repressible and oxygen-inducible proteins mimic those (antigens) found commonly in clinical infections. (Korean J Infect Dis 33:292∼297, 2001)

ORIGNAL PAPER : Effect of Long-tem high-fat diet and fasting on energy mentabolic substrates utilization in reseing in resting rats

( Ye Rim Jeon ),( Ji Su Kim ),( Hye Jung Hwang ),( Hea Jung Suh ),( Ki Won Lim ) 한국운동영양학회 2011 Physical Activity and Nutrition (Phys Act Nutr) Vol.15 No.4

The effects of a high-fat diet and fasting on resting energy expenditure and energy substrate utilization were examined using the method of measuring whole body energy metabolism and oxygen uptake. Eight 4-week old male Sprague-Dawley rats were used for the high-fat diet experiment. Energy metabolism was measured using acrylic metabolic chambers over 24 hours. After 1-week of preliminary feeding, 4 rats were fed a chow diet, whereas the remaining 4 rats were fed a high-fat diet (HF) ad libitum, which contained 40% (w/w, calorie base 60%) more fat than that in the chow diet. The flow rate to measure energy metabolism inside the chamber was controlled at a mean of 3.5 L/min, and five chambers were subjected to measurement. One of the five chambers was used to correct errors by measuring the atmosphere. As a result of 5 weeks of control diet and high-fat diet feeding, body weight of the high-fat diet group tended to increase more than that in the control diet fed group, but the difference was not significant. Oxygen uptake and carbon dioxide production changed as time went on over the 24 hr. The respiratory exchange ratio also changed during the 24 hr, and the difference between the groups was significant. The control group showed significantly more carbohydrate oxidation than that of the high-fat diet fed group. A fasting experiment was conducted using six 7-week old Sprague-Dawley male rats. Energy metabolism measurements were performed using the same method as that used in the high-fat diet experiment; resting metabolism was measured prior to fasting, and a fasting condition began from 9:00 am the next day for 3 days to calculate energy metabolism. Both body weight and 24-hour oxygen uptake decreased significantly as a result of 3-day fasting. Total oxygen uptake in the first day decreased, and declined significantly on day 3 of fasting. Total 24-hour carbon dioxide production decreased significantly over the 3 days. The mean 24-hour respiratory exchange ratio decreased significantly. Additionally, energy expenditure during the dark period (20:00-08:00), which is the active period for rats, decreased significantly with fasting, whereas energy expenditure during the light period (08:00-20:00) did not increase by fasting.

구연 : 백서 암컷에서 에스트로겐에 의한 간 손상시 Indomethacin의 영향

이소연,이진선,장우임,정우철,이강문,조현미,양진모,이영석,정인식,정규원,선희식 대한간학회 2003 Clinical and Molecular Hepatology(대한간학회지) Vol.9 No.3(S)

배경/목적: 에스트로겐 투여시 간 내에서 Kupffer세포를 활성화시켜 저산소증을 유발시키고 대사물질 및 여러 mediator를 유리시켜 간 독성을 일으킨다. 이에 연자등은 Prostaglandin생성 억제제인 indomethacin투여시 에스트로겐에 의한 간 손상에 미치는 영향을 알아보고자 하였다. 대상과 방법: 암컷 백서에서 정상군(saline투여), 에스트로겐투여군(실험 24시간전에 estriol 20mg/bw Kg을 복강내 투여), Indomethacin과 에스트로겐 병합투여군(실험 7일전부터 indomethacin 50uM을 복강내 투여후 실험 1일전 estriol투여)으로 나누어 간문맥으로부터 상대정맥으로 관류액을 순환시켜 상대정맥에서 관류액을 체취하여 oxygen uptake를 측정하였고 혈청내 AST치를 측정하였으며 Kuffer세포를 분리 배양하여 lipopolysaccharide를 투여후 Kupffer세포내 calcium농도를 측정하여 비교하였다. 결과: 1) Oxygen uptake는 정상군, 에스트로겐투여군, indomethacin병합투여군에서 각각 114±4, 146±6, 118±8 umole/g/hr로 에스트로겐투여군에서는 의의있게 증가되었지만 indomethacin투여군에서는 정상군과 차이가 없었다. 2) AST치는 정상군에서는 50±8U/L, 에스트로겐 투여군에서는 458±126U/L, indomethacin병합 투여군에서는 124±57U/L로 에스트로겐 투여군에 비해 의의있게 낮았다. 3) Lipopolysaccharide 1 ug/mL를 투여한 후 측정한 Kupffer세포내 calcium농도는 정상군에서는 195 nM, 에스트로겐투여군에서는 372 nM, indomethacin병합 투여군에서는 213 nM로 에스트로겐투여군에 비해 의의있게 낮았다. 결론: 이상의 결과로 indomethacin은 에스트로겐에 의한 간 손상으로부터 보호작용이 있으며 기전은 Kupffer세포내에서 indomethacin이 arachidonic acid로부터 prostaglandin의 생성을 저해시키는 등 Kupffer세포를 불활성화시킴으로써 oxygen uptake를 감소시키고 prostaglandin의 생성을 억제시켜 prostglandin(E2)에 의한 간 실질세포에서의 oxygen uptake증가를 억제시킴으로써 간 독성으로부터 보호된다.

대학 유도선수들의 유,무산소체력의 관련성

남덕현 ( Duck Hyun Nam ),김미정 ( Mi Jeong Kim ),이미현 ( Mi Hyun Lee ) 대한무도학회 2010 대한무도학회지 Vol.12 No.3

본 연구는 체급간 대학 유도선수들의 유ㆍ무산소 체력(SJFT, 1RM, 최대산소섭취량)의 차이를 비교, 분석하고 각 요인들간의 관련성을 밝히는데 목적이 있다. 피험자는 Y대학교 유도학과에 재학 중인 남자 유도 선수 중 5년 이상 운동경력이 있는 자들로 전국대회 3회 이상 입상경력이 있는 선수 19명을 대상으로 60kg~66kg급을 경량급(6명), 73kg~90kg급을 중량급(8명), 100kg 이상을 헤비급(5명)으로 크게 3그룹으로 분류하여 측정하였다. 자료분석은 SPSS 17.0 program을 활용하여 기술통계, 일원변량분석, 상관분석을 사용하였으며, 결과는 다음과 같다. 첫째, 체급별 유·무산소 체력차이에서 최대산소섭취량과 SJFT의 메치기 합은 경량급, 중량급, 헤비급 순으로 집단 간에 통계적으로 유의한 차이가 나타났으며, 로우 1RM과 스쿼트 1RM은 헤비급, 중량급, 경량급 순으로 체급간에 통계적으로 유의한 차이가 나타났다. 둘째, 신체둘레와 1RM의 관계는 벤치프레스는 가슴과 다리둘레를 제외한 요인에서 정적으로 유의한 상관이 나타났으며, 로우 1RM과 스쿼트 1RM은 가슴둘레를 제외한 요인에서 정적으로 유의한 상관을 나타냈다. 데드리프트는 엉덩이 둘레를 제외한 요인에서 정적으로 유의한 상관이 나타났다. 셋째, 비만도에 따른 유·무산소 체력의 관계에서 BMI는 최대산소섭취량과 부적으로 유의한 상관을 나타냈으며, SJFT, 벤치프레스 1RM, 로우 1RM, 스쿼트 1RM, 데드레프트 1RM에서 정적으로 유의한 상관을 나타냈다. 최대산소섭취량은 SJFT와 유의한 상관관계가 나타나지 않았으며, 로우1RM과 부적으로 유의한 상관을 나타냈다. SJFT는 스쿼트 1RM에서 정적상관을 나타냈다. 결론적으로 유도 경기의 특성에 따라 체급간에 유·무산소 체력요인은 차이가 있는 것으로 나타났으며, 신체둘레와 1RM, 비만도에 따른 유·무산소 체력은 서로 상관이 있다는 것을 밝혀냈다. 이를 바탕으로 각 체급의 선수들의 특성을 고려하여 유도훈련 시 체계적이고 과학적인 프로그램을 계획하고 실천한다면 선수들의 경기력 향상에 큰 영향을 미칠 것으로 판단된다. The purpose of this study is to compare and analyze difference in aerobic·anaerobic fitness of university Judo players between weight divisions, and to clarify relevancy among factors in each. Subjects were those who have exercise career in over 5 years among male Judo players of attending the Dept. of Judo at H university. It measured by classifying subjects largely into 3 groups by having 60kg~66kg class as lightweight(6), 73kg~90kg class as middleweight(8), 100kg~over 100kg class as heavyweight(5) targeting 19 players who have the awarding career in over 3 times at National Competition. Data analysis was used descriptive statistics, One Way ANOVA, and Pearson`s Correlation by utilizing SPSS 17.0 program. The results are as follows. First, in difference of aerobic·anaerobic fitness by weight division, the total of the maximal oxygen uptake and SJFT(special judo fitness test) throw was in order of lightweight, middleweight, and heavyweight. Row 1RM and squat 1RM were indicated the statistically significant difference by weight division in order of heavyweight, middleweight, and lightweight. Second, in relationship between body circumference and 1RM, the Bench Press was indicated the positively significant correlation in factors except chest and leg circumference. Row 1RM and squat 1RM showed the positively significant correlation in factors except chest circumference. Dead-Lift showed the positively significant correlation in factors except hip circumference. Third, in relationship of aerobic·anaerobic fitness according to obesity index, BMI showed negatively significant correlation with maximal oxygen uptake. The positively significant correlation was indicated in SJFT, bench press 1RM, row 1RM, squat 1RM, and dead-lift 1RM. Maximal oxygen uptake wasn`t shown significant correlation with SJFT, and showed negatively significant correlation with row 1RM. SJFT showed positive correlation with squat 1RM. In conclusion, the factors of aerobic·anaerobic fitness by weight division were indicated to have difference according to characteristic of Judo game. The aerobic·anaerobic fitness according to body circumference, 1RM, and obesity index was clarified to have mutual correlation. Given planning and practicing a systematic and scientific program of Judo training by considering characteristics of players in each weight division based on this, it is judged to be likely to have great influence upon enhancement in players` athletic performance.

Noninvasive measurement of the tissue oxygen uptake using near-infrared spectroscopy

NAKAGAWA, Emiko,MINAMITANI, Haruyuki,YAMAZAKI, Hajime 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

To determine the change in muscle oxygenation, muscle oxygen saturation and hemoglobin volume was measured transcutaneously with near-infrared spectroscopy (MRS) in the skeleton muscle during cycle ergometry. A new NIRS system is presented for noninvasive evaluation of the tissue oxygenation. To measure more simply, a reflectance sensor that consists of one photodiode (PD) and light emitting diodes (LEDs) with three wavelengths was designed. This instrument monitors and evaluates the regional oxygen saturation (rSO_(2)) and volume of hemoglobin (HbI) using hemoglobin index (HbI) more simply and inexpensively for clinical application. Blood volume and oxygen supply to skeletal muscle is a potentially important factor to maintain muscular oxidative metabolism. The vastus lateralis muscle and the brachioradialis muscle of nine healthy men were monitored by NIRS, using cycle ergometry. The oxygen uptake (VO_(2)) was also monitored to evaluate oxidative metabolism. The calculation results of oxidative metabolism with NIRS correlated with both the VO_(2) and work fate. The purpose of this study was to determine whether the O_(2) consumption measured by NIRS with rSO_(2) and HbI can be a quantitative measure of muscle oxidative metabolism.