目的 研究军校大学生5000 m跑成绩与相对最大摄氧量(VO_2max)之间的函数关系,为评估他们的有氧耐力素质,为提高5000 m跑训练效果提供依据。方法 采用整群抽样法,测量67名某军校大学生的各项身体形态指标,通过PWC₁₇₀台阶实验间接推算VO_2max,对5000 m跑成绩和VO_2max进行回归分析。结果 受试对象5000 m跑时间(Y)与相对VO_2max(X)呈显著负相关(r=-0.813,P<0.01),线性方程式为:Y=32.997-0.205X(r²=0.661,P<0.01);二次曲线方程为:Y=56.067-1.147X+0.0094X²(r²=0.686,P<0.01)。结论 相对VO_2max水平的高低很大程度上决定5000 m跑成绩。可通过降低体脂率等方法提高相对VO_2max,达到提高5000 m跑训练成绩的目标。

Objective To analyze the correlation between the performance of military academy students’ 5000-meter runningand their maximal oxygen consumption (VO_2max)so as to provide a basis for military academy to assess the aerobic endurance level of its students and to provide the training effect of 5000-meters running. Methods Body indexes of 67 students from the military academy were measured by cluster sampling method and theVO_2max was indirectly calculated through PWC170 step experiments. Then regression analysis of the performance of 5000-meters running and VO2max was conducted. Results There existed a significant negative correlation between the time(Y) of 5000-meters running of took atest subject and the comparative VO_2max(X) (r=-0.813,P<0.01), which could be expressed by linear equationsand quadratic curvilinear equation respectively as follows: Y=32.997-0.205X (r²=0.661,P<0.01);Y=56.067-1.147X+0.0094X² (r²=0.686, P<0.01). Conclusions The level of comparative VO_2max, to a great degree, determines the 5000-meters running performance of military academy students. Military academy students can increase their comparative VO_2max by reducing the rate of body fat or some other indexes so as to accomplish the training purpose of improving their 5000-meters running performance.