【摘要】 目的:针对当前国内对跑节省化(RE)关注度的逐渐提高而又无统一测试方法,国外在VO2计算方法、负荷强度的选择等方面存在不一致性的局面,旨在推导出单一RE测试负荷,确定VO2收集和计算时间,建立一套适合我国普通男性青年完整的RE测试方法。方法:以63名新兵为实验对象,分成A组和B组。首先,A组在活动跑台上分别以55%、60%、65%和70%VO2max对应的速度完成RE测试,然后,测定其5km成绩并以此作为因变量,上述4个RE值分别为自变量进行线性相关分析,应用r2判定系数法判断RE与5km跑成绩线性关系,找出最佳线性模型;以5km跑成绩作为效标,以R-RE与5km跑成绩的4个相关系数r为基础进行曲线拟合,推导适宜的最佳RE负荷跑速。另外,测试B组RE与5km成绩,以检验最适宜负荷的有效性,并从B组中随机抽取50%受试者进行RE重测,以检验RE指标的可靠性和稳定性。结果:11.5km/h的跑速可作为我国普通男性青年测定RE的适宜负荷,单位采用ml/kg/min表示;应计算末尾2min的VO2所得均值作为RE值;有效性检验显示,以11.5km/h的速度测定的RE结果有代表性;RE重测可靠性高。结论:建立了一套完整的RE测试方法。更多还原

【Abstract】 Objective:As more and more attentions are paid to Running Economy(RE) and there is no unified RE test method in China at present,and the O2 computing method and the load intensity selection are not unanimous,this paper aims to deduce single RE load and establish O2 collection and computing time and set up an integrated RE test method that fits the ordinary male youth in China.Methods:63 recruits were taken as the experimental subjects and divided into group A and B.Firstly,the RE test was done at corresponding speed according to 55%,60%,65% and 70%O2max separately on the treadmill and the 5km running performance was tested for group A;the linear correlation analysis was done by taking 5km running performance as the dependent variable and the aforementioned four RE values as the independent variables respectively,and the R2 determination coefficient method was applied to judge the linear relationship between RE and 5km running performance to find out the optimum linear model;using 5km running performance as the criterion,the curve fitting was done based on the four related coefficients r got from R-RE and 5km running performance so as to deduce the optimum RE load running speed.In addition,the RE and 5km running performance were tested for group B to verify the validity of the optimum load;50% subjects from group B were selected randomly to test the RE again to verify the reliability and stability of the retest.Results:The running speed of 11.5km/h could be used as the optimum load to test RE for ordinary male youth in China,which is expressed by the units of ml/kg/min;the O2 mean value of the final 2min should be computed as the RE value;the validity test showed that the RE result tested at the speed of 11.5 km/h is representative;the RE retest is highly reliable.Conclusion:An integrated RE test method is established.更多还原