在学校田径运动会上，运动员进行跳远比赛时，起跳脚踩线犯规或起跳脚未踏上起跳板起跳的现象常有发生。在跳远教学课上，上述现象同样具有普遍性。这是由于业余运动员的技术不成熟，对踩线犯规比较惧怕，“宁愿吃点亏也不愿发生踩线犯规”所致。无论出现哪种情况，都不能跳出 In school track and field games, athletes jump long game, jump foot on the line foul or take-off foot jumped off the board jump phenomenon often happen. In the long jump teaching class, the above phenomenon is also universal. This is due to the technical immaturity of amateur athletes who are more afraid of stepping on the line and prefer to eat less and do not want to step on the line. No matter what kind of situation, can not jump out