Research On The Technology Of Back-facing Slicking Shot Potting

Shot putting is a throwing event, with strength as its base and speed as its core. The moving track of shot-putting is non standard aparadola, which follows the mechanics theory of oblique putting moving. According to this moving equation: S = Vo2COSa/g[sin α + (Sin²Î± + 2gh/v₀²)^1/2]. We know there are three factors which affect the score ofshot putting, They are the initial velocity (v₀), the throwing angle (a)and the height (h) of putting. Among those, v₀ is the most principal factor because it gathers all the accelerating strength that the athletic movement affects the shot. So how to improve the initial velocity becomes the key to the question during the process of shot putting. Skill evolution has changed from the most primitive padding shot putting into cross ranging sliding shot putting, then into the semiback -facing sliding shot putting and back-facing sliding shot putting, and now into the situation of back-facing sliding shot putting and the rotational shot putting exist tripatitely.From this change, we can easily see that initial velocity of increasing is always the principal reason which promotes the technological innovation and the improvement of shot putting. In this point, the trends of shot technique are lengthening the acting distance before you put the shot and improving the moving speed of sliding. Tracing to the improvement history of shot technique, we can see the trend was single, that is to say, the imatition and the improvement mixed and existed together before 1970s. And the imatition and the improvement of the spotsman's shot technique followed its mechanics unconscientionsly. In 1980s, the sportsman could make the theory shot technique conform to its mechanism more initiatively. They also find the suitable shot conscientionsly and technique which suits to themselves. In this way, shot technique should not only conform to the principal reason of its improvement and evolution but also find the suitable technique which comes with the sportsman's individual character. These are important factors which affect the improvement of shot technique.This article using documentations and synthiesis methods, with the help ofsubstantial related references access to informations about the history and the technical characteristics of shot putting specific explored the back-putting is a demand of the shot putting in seven aspect.