在直道上起跑的不分道的项目有1500m跑、2000m障碍跑和3000m障碍跑等(包括抢道标志线)。以前规则及有关文献上都将该线画成一条等半径的圆弧线。现根据对每位运动员所站的不同起跑位置的数学计算,发现运动员在弧线外侧比在内侧起跑要少跑距离。按照竞赛规则,运动员必需在条件相同、机会均等的前提下比赛才是合理的,有关这方面的研究,国内已有文章论述。 There are 1500m runners, 2000m runners and 3000m runners on the straight road (including the lane markings). The previous rules and related documents drew this line into an arc of equal radius. Based on a mathematical calculation of the starting positions of each athlete standing, we found that the athlete traveled less outside the arc than on the inside. According to the rules of competition, athletes must compete under the same conditions and with equal opportunities. Studies in this field have been discussed in the domestic literature.