在中小学,耐久跑是师生不愿提及的话题,而耐久跑又是提高学生体能水平的既直接又有效的手段。为此,笔者针对学生现状,组织进行了定向越野替代耐久跑练习的实践研究,特此,笔者成功申报了区级课题《小学阶段耐久跑替代练习的实践研究》,经过一年多研究,成果如下:耐力素质的界定耐久跑的目的是提高耐力素质,那么,什么是耐力素质?耐力素质又怎么衡量?这个成了课题研究之初的第一个难题。为了界定耐力素质, Durable running is a topic that teachers and students are reluctant to mention in primary and secondary schools. Durable running is both an immediate and effective means of improving students’ fitness. To this end, the author of the status quo for students, the organization conducted a study of the practice of directed cross-country alternative durable running practice, hereby hereby author successfully declared the district-level project “Durable Substitute Practice Practice”, after more than a year of research, the results are as follows : Endurance qualities define the purpose of durable running is to improve endurance quality, then what is endurance quality? Endurance quality and how to measure? This has become the subject of the first puzzle. In order to define endurance quality,