李炎

在全程的单步时间和步频上，李炎同世界优秀的中长跑运动员SebastianCoe之间没有显著性差异；

There is no significant difference between Li Yan and Sebastian Coe in terms of single pace and pace frequency in the full distance .

主要采用高速录像拍摄法，对参加2004年全国田径大奖赛暨总决赛（合肥站）的我国优秀的男子1500m运动员李炎各段落途中跑的运动学特征进行分析研究。

By the method of video analysis , kinetic characteristics of Li Yan 's running in different segments of a 1500m competition were studied .

结果发现：与世界优秀的男子中长跑运动员SebastianCoe相比，李炎第二圈和第三圈的平均步长存在较大差距是李炎成绩落后SebastianCoe的主要原因；

The result shows that compared with Sebastian Coe , world 's top long and middle-distance runner , Li Yan 's average pace length in the 2nd and 3rd laps is shorter than Sebastian Coe. And this is the main reason for his falling behind .