Discus Throw

The discus throw is an Athletics discipline, in which a lenticular discus is thrown out. The men throw a discus with a mass of 2 kg and 220 mm diameter, while among women the discus weighs 1 kg at a diameter of 181 mm. in juniors and masters is thrown with other weights.



Content
[hide] *1 History  ==History[ Edit] == Discus throw was in ancient times already practiced by the Greeks, inter alia, on the ancient Olympic Games. The Greek sculptor Myron made in the fifth century BC a famous statue of a discus thrower (Diskobolos). The old lady helper used by the Greeks had no standard weight, were of iron, stone, bronze or lead and the mass ranged from 1.35 to 4.76 kg. A quite a few times sometimes contest held with a classical discus of 4 kg and without the current Rotary technology – there is than a sport practiced by at least 2700 years old.
 * 2 Rules and equipment
 * 3 Technique
 * Flight 4
 * 5 world record development
 * 5.1 Men
 * 5.2 Women
 * 6 Top 10 athletes
 * 6.1 Men
 * 6.2 Women
 * 7 external links

This sport is on the first Olympic Games since 1896 practiced. In the women makes this part since part of the 1928 Olympic Games. ==Rules and equipment[ Edit] == The discus is thrown from a concrete ring with a diameter of 2.50 metres. There around is a thin, upright, metal edge of some centimeters height. The concrete surface of the ring must, as with all object numbers, two inches lower than the surrounding soil. The ' run-up ' in the discus throw consists of rotations of the pitcher, which must remain inside the ring. For security reasons, the ring surrounded by a mesh object cage, who came to the object in the direction of an opening of several meters width. A pitch is only then valid, when the discus lands in a sector with an angle of 34.92 ° (expelled from the middle of the ring), and that the object (st) there, after the discus landed, has left the ring correctly. The ring must be left from the back half of the ring. The object distance is measured from the edge of the ring to most in the field makes the discus at hand impression. At most races, each object (st) there are three attempts, after which the best six or eight athletes still three additional attempts are allowed to do.

A discus consists of a wooden or plastic middle section surrounded by a fairly narrow metal rim. In the middle is often a screw, using which deviations in the weight can be corrected. The discus must be symmetrical, which means that the form of topside and the underside should be equal. At the discus is similar in size and shape variation allowed, however there is little variation in the weight distribution. At Dego for topwerpers can to over 90% of the weight in the rim of the discus, while that at only about 70% is simple Dego. ==Technique[ Edit] == <p style="margin-top:0.5em;line-height:22.3999996185303px;color:rgb(37,37,37);font-family:sans-serif;">With the hammer throw and the turn technique of shot put discus thrower as agreement has, that pitchers by a number of turns give the projectile speed as much as possible. At the current, almost without exception used technique is at the start of the throw the pitcher with its back to the object direction while at the chest to the field Centre points. There is approximately one and a half turn, but because the discus in the beginning is held backwards (so does the pitcher from the Greek image even though; see below picture 1 of the image series of Rutger Smith), makes the discus more than 1 3/4 turn, which is about 650 °.

<p style="margin-top:0.5em;margin-bottom:0.5em;line-height:22.3999996185303px;color:rgb(37,37,37);font-family:sans-serif;">In short, the technique of a right-handed from a pirouette on the left leg (Photo 2), a flat ' gently ' where jumping from the left (picture 3) on the right (picture 4) direction in the object is moved, then a pirouette on the left (picture 4/5) in order to come to the centre position (Photo 6). All the while being kept only at the Centre the discus behind to beside the athlete to be compromised. The Centre itself happens at shoulder height and with stretched arm. Rutger Smith during the discus throw*In more detail and with a little more explanation from the Biomechanics: see the photos of Rutger Smith's then-personal best 65,51 m (Dutch Championships). The throw starts with bringing it backwards the discus (picture 1) and the discus will remain up to the Centre. There then follows a twist on the left foot, with the left knee the movement ' leads ', such as on picture 2 can still be seen. During this turn makes the pitcher itself wide, see the attitude of right leg and arm on Photo 2. The rotational speed is relatively low, but due to the wide making supplies that are not as high rotation speed anyway much rotation time on (this ' moment ' is stored energy, which can be used again later). During the turn balances the pitcher on the linkervoorvoet and small balance disturbances could ruin the steps later. ==Flight<span class="mw-editsection" len="325" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;font-family:sans-serif;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] == <p style="margin-top:0.5em;line-height:22.3999996185303px;color:rgb(37,37,37);font-family:sans-serif;">An interesting challenge for discus throwers to "fly" the discus. A sloppy shed discus goes fluttering, captures a lot of wind and is thereby not far, while good pitchers exploit the air resistance to achieve additional far distances. In fact, the Centre is ensured, that the discus to a vertical axis rotates quickly and that the discus such helt, that the air against the bottom of the discus comes during most of the flight. The rotation ensures that the discus retains the same location during the long flight (gyroscopic effect) and the air flow against the bottom ' blows ' the discus something up. Discus throwers are the only athletes who have very much like against wind. A good technique is laid on the discus ' the wind ' and that delivers meters advantage on (aerodynamic effect). This also explains why the metal edge have much weight in expensive Dego, the gyroscopic effect is bigger and the discus can continue at a perfect Centre; Conversely, however, that any deviation from the ideal Centre with such a discus more disadvantage. It will be clear, for optimal use of the aerodynamic properties of a discus very a lot of training required. ==World Record Development<span class="mw-editsection" len="343" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;font-family:sans-serif;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] == ===Men<span class="mw-editsection" len="325" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] === ===Women<span class="mw-editsection" len="326" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] === ==Top 10 athletes<span class="mw-editsection" len="333" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;font-family:sans-serif;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] == ===Men<span class="mw-editsection" len="325" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] === ===Women<span class="mw-editsection" len="327" style="-webkit-user-select:none;font-size:small;margin-left:1em;line-height:1em;display:inline-block;white-space:nowrap;unicode-bidi:-webkit-isolate;"><span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">[ Edit<span class="mw-editsection-bracket" len="1" style="color:rgb(85,85,85);">] ===
 * Although the discus throw at the same time, it is clearly also a rotary motion is a motion along a straight line. That matter than to start gently that the on picture 3/4 can be seen. On Photo 2 pitcher al begins to fall forward, on the left foot and is trimmed with 3 on picture 4 lands the pitcher on the right front foot. By with the background similar to see well, that gently rotate the shoulders during this move, but hardly be horizontal; the forward movement is especially in abdomen, legs and feet. For the object is almost 2/3rds of the gently used. The second part of the rectilinear movement follows, then, a twist on the right foot. This second turn is smaller than the first, over 1/3rd part of the throwing ring will be used, the rhythm is so large-small. At the second spin brought the legs close together (picture 4/5), whereby the rotation speed is much higher (use of rotation time). The left foot is flat against the edge of the throwing ring quickly placed, a precision movement that are not always succeeds – at placement of the foot on the edge is the throw will be void.
 * On picture 5/6 is the centre stage. At the Centre is, as with all technical components of the athletics, much used for tension. It has been found, that a muscle the most powerful as that right before a move equally in opposite directions is stretched. This happens in the discus throw with the trunk muscles: on picture 1 there is what for voltage to the first turn to bet, on picture 2/3 his shoulder-and bekkenas and there is no parallel for voltage, however, the bekkenas from Photo 4 before walking on the shoulder axle and this creates great tension in the hull. The hull is wound up like a spring, as it were, and that is at the Centre spring tension used to come with the right shoulder axle again soon bekkenas (Photo 6). There is also a lot of tension in the chest muscles, especially the large breast muscle. In Photo 2 is the throwing arm quite relax aside and held back, but at foto 3/4/5 Gets the body's arm in and creates great tension on the chest. That stress, that in itself is highly trained chest muscles in extra short time the arm from behind (Photo 5) can bring to the side (Photo 6).
 * The discus at the centre forwards, but also somewhat up. The component is up largely with the legs causes: on picture 2/5 is fairly low, to the body centre of gravity only in the last stage by thrust of especially the left leg to go up. For the forward component that is greatest if the discus is thrown off, as far as possible to the outside as far away as possible from the rotation axis of the pitcher so. Photo 6 shows where the axis of the pitcher is: from linkervoorvoet to left shoulder. Everything revolves around that axis, also the hull, the discus is close to this position and thus obtains the discus the highest speed.
 * At the centre there are two variants. One is the left foot firmly on the ground held to the discus is flown away. The idea behind this is that for a move a fixed point is needed, that there should be set off against the ground. At the other variant, the left foot is hardly more contact with the ground at the time of the Centre, as shown on picture 6. The biomechanical downside of this is, that action of discus + arm gives a comment the wrong way in the rest of the body, but because the thing in action little mass compares to the responsive thing, is this disadvantage on the sale increased. The jump is more dynamic and Centre for some of the pitchers to throw the most appropriate way to the largest distances.
 * At ' objects ' is thought to actions of the arm muscles, but do in the discus throw that actually nothing! The discus throw is a movement of the whole body, where the movement is from bottom to top. First ensure the feet for most action, then hip, torso and finally the breast.The arm is not more than the necessary pendulum. However, that the length of the pendulum is important. Pitchers have long arms and it is said, that when topwerpers an inch more shedding yields a profit of half a meter.