Sprint Buffer Technology Research

The enroute run of dash is the most important stage of thedash. In this stage, the most rapid speed can be produced andkept .the cushioning technology is an important technology whichcan decide the result of the dash. In our country, the leve1 of dashhas been keeping very low, the main reason is that during theenroute run, the cushioning tecdrio1ogy in the ear1y part of thesupporting phase is not very good, which causes a series of sideeffects, such as the level resistance of reacting force is too strong,the ang1e of push-off is big, the tbrward speed of center~of -gravity is 1oW, the mpsc1e is too tense, and so on. In the past fewgears, with the furthur st'Udy of the osci11ating dash, the cushioningtechno1ogy is getting more and more important .The techno1ogy isa sensitive topic in the nationa1 track-and --fie1d field. people havequite ditTerent ideas on this tecdrio1ogy This paper gives us aCQmprehensive and systematic analysis on the cushioningtecAnology by different means .The result indicates (l) Thecushioning stage is the motion stage in which the human body canturn the resistance into drive, then be speedened step bystep,(2)The re1ationship betWeen the cu5hioning tecdriology andthe competence of 1egs is very close,(3)The muscle groups of backthigh put fOrth the strength abruptly which has a very importanteffect on shortening the cushioning twice and improving thecushioning effect,(4)During the cushioning course, the heeldoesn't touch the ground, the hip joint, knee joint and ank1e havedifferent functions. the knee joint provides hard sustain, the adeeis the most effective part in cushioning; the rapid extending ofthe hip joint can speeden the flickering ot the 1egs, (5)In thecushioning stage, the rapid flickering of the arms and legs is aneffective motion, (6)The exce11ent cushioning tech-nology hasmany features, such as the extending of hip joint can be rapid, theang1e of the knee joint can change great1y, the feet can touch theground rapidly and so on.The cushioning technology causes important effoct for theathletes improving their speed, With the improvement of the dashleve1, the absolute speed of the ath1etes is more and more rapid.People have already considered it important bit by bit.