Shotput and discus3/11/2023 The evolution of javelin technique has been a bit more haphazard and controversial. Translation: If an object is heavy or far away from the rotational axis, it’s harder to get it moving than if it’s light or close to the rotational axis.) (The moment of inertia is equal to the object’s distance from the rotational axis squared times the mass of the object. The farther the object is from the axis of rotation, the larger its “moment of inertia,” and the more resistant the weight will be to rotation. As a thrower spins, his body acts as an axis of rotation. The different ways the objects are held-the shot must be in the crook of the neck at all times, while the hammer and discus can be swung freely-and the mass of the objects are the biggest influences on technique. By the 1950s, concrete surfaces and smooth-bottomed shoes grew universal-it’s tough to spin with spikes on-allowing for more and faster twirling.īut even though the shot, discus, and hammer have all moved toward circles, spins, and concrete, their techniques won’t ever be precisely the same. Swing your arm around and release the discus as before.As modern athletes figured out that spinning fast meant longer throws, all the throwing disciplines, with the exception of javelin, moved to spin-friendly circles. Then step forward with your left foot so you are in the standing position of the previous drill. Rotate on the left foot while stepping forward and around with your right foot until the heel is facing the field. Start facing the field, with your left foot in front of the right. The South African discus throw is a three-quarters throw that you can complete with either a discus or a hula hoop. Once you have mastered the action, start to rotate your hips toward the throwing field while keeping your shoulders square with the back of the circle. Simultaneously, rotate your feet so they are parallel with the toe board. Push off your left foot, and drive your right foot down and out toward the toe board. Start at the back of the circle in a crouched position, with your back to the field. The glide drill helps build confidence in the glide technique for throwing the shot. To add difficulty, begin standing with your opposite side facing the field, and rotate on the balls of your feet as you swing your arm around to release the hoop. Keep the arm slightly below your shoulder, and release the hoop in front of your body around eye level. Step into your throw with the opposite foot, driving your legs, hips, and chest while swinging your arm around the body. Hold the hula hoop in your hand, with your arm extended. Lead-Ups With a Hula HoopĪ hula hoop can be used in place of a discus for a beginner thrower to learn the footwork and arm motion of the throw, without the frustration of the release. Each time you clear the height, step back two paces. For added difficulty, try setting up a rope at 7 to 10 feet high for the ball to clear. Extend your legs and use your back and chest muscles before extending your throwing arm. Use your entire body to project the ball. The optimum release angle to achieve the farthest distance is 42 degrees. For this drill, hold the medicine ball the way you would a shot, lower yourself into a standing throw position, and project the ball up and out. They are larger and easier to throw, and you can use a lighter weight if necessary. Medicine balls are good tools for helping beginners learn shot-put technique. Putting a Medicine Ball For Height and Distance The discus should travel in a straight line on its edge. Taking a step with your opposite foot, bend at your waist and release the discus along the ground, letting it come off your index finger. Catch the discus, or let it fall back to the ground.įor the bowling drill, hold the discus as you did for the standing release. Swing your arm up toward the sky, and release the discus from your index finger. Hold the discus with your fingertips, with your thumb resting on the flat part of the discus. Standing releases work on your release into the air. When you release the discus correctly, it will fly flat, and travel farther. Standing releases and bowling the discus help with your release.
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