高中男生“阳光长跑”个体无氧阈心率回归方程的建立

Establishment of an individual anaerobic threshold heart rate regression equation for high school boys going for “Sunshine Long Distance Run”

旨在通过实验研究建立高中生"阳光长跑"个体无氧阈心率回归方程,使每个学生可以获得个体适宜负荷强度,并以此控制跑速。第1阶段通过文献初选,再通过专家问卷法对初选指标做进一步筛选,然后对确定的指标进行实验测试,以无氧阈心率为因变量,筛选出的指标为自变量进行回归建立个体无氧阈回归方程;第2阶段用回归方程计算的无氧阈心率与实测无氧阈心率进行配对样本t检验,进行回代检验;第3阶段以回归方程计算出的无氧阈心率作为负荷强度进行为期12周训练,以检验实践应用效果。结果显示:(1)实验对象推测值与实际观察值经配对t检验,结果显示无显著性差异(P>0.05)。将推测值与实际观察值进行相关分析再次应证其一致性较高(r=0.889,P<0.001)。(2)12周训练后,实验组前后VO2max比较有显著提升(P<0.01),对照组VO2max前后无显著性差异(P>0.05),实验组与对照组VO2max比较,实验组显著高于对照组(P<0.01)。结果表明:高中男生"阳光长跑"活动推荐使用个体无氧阈心率作为负荷强度监控指标,个体无氧阈心率回归方程为:Y=111.537+6.076x1-0.2821x2-0.569x3+9.944x4(其中,x1为年龄,x2为身高、x3为基础心率,x4为体表面积)。

The purpose is to establish an individual anaerobic threshold heart rate regression equation for high school boys going for "Sunshine Long Distance Run" via experimental study, so that every student can get an individually suitable load intensity, and therefore control his/her running speed. In phase one, the authors preliminarily selected the indexes through literature, and further screened the preliminarily selected indexes by means of expert questionnaire, and then carried out experimental test on the determined indexes, used anaerobic threshold heart rate as an independent variable and the screened indexes as independent variables for regression, and established an individual anaerobic threshold heart rate regression equation;in phase two, the authors carried out paired samples t test on the anaerobic threshold heart rate calculated by the regression equation and the anaerobic threshold heart rate measured, and carried out back substitution test;in phase three, the authors let the testees have 12-week training by using the anaerobic threshold heart rate calculated by the regression equation as the load intensity, so as to check the practical application effect. The results showed the followings: 1) the results of the paired t test on the predicted values and actually observed values of the testees showed no significant different(P>0.005);the authors carried out correlation analysis on the predicted values and actually observed values, and again verified that their consistency was high(r=0.889, P<0.001);2) after the 12-week training, the VO2 max of the experiment group increased significantly as compared to that before the training(P<0.01), the VO2 max of the control group had no significant difference as compared to that before the training(P>0.05);in VO2 max comparison, the experiment group’s was significantly higher than the control group’s(P<0.01). The results indicated the followings: using individual anaerobic threshold heart rate as a load intensity monitoring index is recommended for the activity of high school boys going for "Sunshine Long Distance Run";the individual anaerobic threshold heart rate regression equation is: Y=111.537+6.076×x1-0.2821×x2-0.569×x3+9.944×x4(where x1 is age, x2 is height, x3 is basic heart rate, x4 is body surface area).