目的为提高学员中长跑成绩和抗疲劳能力提供依据。方法体育测量法和数理统计法。结果得出影响中长跑成绩的三个主要身体素质因素依次为12min跑、400m和立定跳远。结论由此建立的回归方程和相应的数学模型评价等级标准，可用以合理安排教学中素质练习和技术练习的比重。 Objective To provide basis for improving the performance of middle and long distance runners and their ability of resisting fatigue. Methods of Physical Measurement and Mathematical Statistics. The results showed that the three main physical quality factors affecting the performance of middle and long distance running were 12min run, 400m and standing long jump. Conclusion The regression equation and the corresponding evaluation criteria of mathematical model can be used to reasonably arrange the proportion of quality exercises and technical exercises in teaching.