CAJ | 학술논문

目的探讨不同氧浓度环境下的个体乳酸阈血乳酸值，个体乳酸阈时间，个体乳酸阈速度的变化，为低氧训练和低氧健身的强度监控提供生化学依据。对象与方法以广州体育学院19名男生为研究对象，广州体育学院常压低氧房为实验场所，分别在常氧和三个急性低氧（氧浓度为18．5％，16．5％，14．5％）环境下，利用prince-100H血氧饱和分析仪和EKF—c—line GP型号乳酸盐仪和Max—Ⅱ心肺功能系统仪等仪器，以逐级递增负荷的方式分别测定受试者在常氧的最大摄氧量、常氧和三个急性低氧环境下与时间对应的血乳酸值，最后利用个体乳酸阈得出个体乳酸阈曲线、个体乳酸阈血乳酸值、个体乳酸闽速度及个体乳酸阈时间。比较不同环境下个体乳酸阈的变化。结果受试者在本次实验以递增负荷方式，在急性低氧和常氧环境下：个体乳酸阈都随着氧浓度的下降而发生相应的下降，其中个体乳酸阈血乳酸值分别是（4．61±1．07，4．59±0．89，4．69±1．09，3．78±1．21）mmol／L，对应的个体乳酸阈时间分别是（10．09±2．27，10．31±3．09，9．92±2．73，8．02±2．98）min，对应的个体乳酸阈速度分别是（8．82±1．08，8．67±0．95，8．42±1．11，8．1±0．79）km／h。且在14．5％氧浓度环境与常氧环境相比，发现个体乳酸阈都有显著性差异。结论本实验建立急性低氧环境下个体乳酸闽测试的模型、推算个体乳酸阈，发现了个体乳酸阈与氧浓度的规律；为急性低氧训练和运动健身计划的制定提供科学的生化学依据。
목적탐토불동양농도배경하적개체유산역혈유산치，개체유산역시간，개체유산역속도적변화，위저양훈련화저양건신적강도감공제공생화학의거。대상여방법이엄주체육학원19명남생위연구대상，엄주체육학원상압저양방위실험장소，분별재상양화삼개급성저양（양농도위18．5％，16．5％，14．5％）배경하，이용prince-100H혈양포화분석의화EKF—c—line GP형호유산염의화Max—Ⅱ심폐공능계통의등의기，이축급체증부하적방식분별측정수시자재상양적최대섭양량、상양화삼개급성저양배경하여시간대응적혈유산치，최후이용개체유산역득출개체유산역곡선、개체유산역혈유산치、개체유산민속도급개체유산역시간。비교불동배경하개체유산역적변화。결과수시자재본차실험이체증부하방식，재급성저양화상양배경하：개체유산역도수착양농도적하강이발생상응적하강，기중개체유산역혈유산치분별시（4．61±1．07，4．59±0．89，4．69±1．09，3．78±1．21）mmol／L，대응적개체유산역시간분별시（10．09±2．27，10．31±3．09，9．92±2．73，8．02±2．98）min，대응적개체유산역속도분별시（8．82±1．08，8．67±0．95，8．42±1．11，8．1±0．79）km／h。차재14．5％양농도배경여상양배경상비，발현개체유산역도유현저성차이。결론본실험건립급성저양배경하개체유산민측시적모형、추산개체유산역，발현료개체유산역여양농도적규률；위급성저양훈련화운동건신계화적제정제공과학적생화학의거。
Objective To study the individual lactate threshold and the changes of associated indicators under different circum- stances in the acute hypoxia training and provide biochemical basis in hypoxia for people. Objects and Methods 19 male under- graduate of Guangzhou Sport University as the research object, and were divided into four different environments respectively, （ plain, 18.5% , 16.5% , 14.5% ）, using prince - 100H oxygen analyzer and EKF - c - line GP type lactate meter and Max - Ⅱ heart and lung function instrument, each group has the increase the load test respectively, in plain and the different of 3 acute hypoxia, and the individual lactate threshold curve and the plains of maximal oxygen uptake. The last, calculating the in- dividual lactate threshold on the different circumstances for comparison. Results The subjects have a downward trend in the in- dividual lactate threshold by tt±e way of different levels of incremental load exercise in this experiment under the simulated high altitude environment ： the individual lactate threshold respectively is （4.61 ＋ 1.07,4.59 ± 0.89,4.69 ± 1.09,3.78 ± 1.21 ） mmol/L, （10.09 ±2.27,10.31 ±3.09,9.92 ±2.73,8.02 ±2.98）min, （8.82 ±1.08 ,8.67 ±0.95,8.42 ±1.11,8.1 ±0. 79） km/h ,which inl4.5% there is a significant difference. Conclusion The study established the individual lactate threshold test method model under a simulated high altitude environment, and found out that the individual lactate threshold and the sim-ulated high altitude is inversely proportional; It provides a scientific basis for biochemistry of simulating high altitude training and the development of sports and fitness programs.