一、问题的提出: 众所周知,短跑运动成绩是由于步频、步幅两个主要因素决定的。运动员要想取得预想的成绩,一般不外乎采取三种途径;一是加大步幅,提高步频。二是步幅不变着重加快步频;三是步频不变加大着重步幅,运动员赛跑时所表现的步幅、步频情况,不仅反映了他们的技术特点、素质水平、生理负荷能力,而且和神经类型、体型特征有密切关系。近年来,国外一些专家为提高短跑水平围绕着步频、步幅发表了不少见解,其中多数人对步幅较为重视。就我国短跑运动员来讲,50年代就有步频快的特点:60年代,步频、步幅有同时增长的趋势,100米成绩有所提高,70年代,运动员的步频虽有提高,但步幅却有所下降,100米成绩没有多大进展。从宏 First, the question raised: As we all know, sprint performance is due to pace, pace two major factors. Athletes want to achieve the desired result, generally nothing more than take three ways; First, increase the pace and improve pace. Second, the same pace of pace to speed up the pace; Third, increase the pace of the same pace, the pace of performance of athletes, pace, not only reflects their technical characteristics, quality level, physiological load capacity , But also with the nerve type, body type characteristics are closely related. In recent years, some foreign experts to raise the level of sprint around the pace, pace published a lot of opinions, most of whom attach more importance to the pace. As far as our country’s sprinters are concerned, there was a great success in the 1950s. In the 1960s, the pace and pace were increasing at the same time. The 100-meter performance improved. In the 1970s, the pace of athletes was improved. However, Pace has declined, 100 meters did not progress much. From macros