The high jump Info

The high jump is an athletics, track and field, event in which competitors must jump over a horizontal bar placed at measured heights without aid of any devices. It has been contested since the Olympic Games of ancient Greece. Over the centuries since, competitors have introduced more effective techniques to arrive at current form.

In a competition, the bar is set at a relatively low height, and is moved upward in set increments (3 or 5 centimetres, approximately 2 inches). Each competitor has the option of choosing which height they wish to start, as long as the height is greater or equal to the designated starting height for the competition. The starting height is usually determined by the games committee for the competition.

Once a competitor has elected to begin, they receive three attempts at each height and once they clear a height, they are cleared until the next height. Competitors choose whether or not to attempt subsequent heights. A competitor may choose to pass at a given height or, after failing to clear the bar at a given height, may pass on subsequent attempts at the height. Any competitor who records 3 consecutive misses is out of the competition. The competitor who clears the highest jump is declared winner. If two or more competitors clear the same maximum height, the competitor with the least number of failed attempts at the best height cleared wins. If these are equal, the winner is the person who has had the least number of failures overall during the competition. If that fails to break a tie for first place, a jump off is conducted.

The Fosbury Flop is a technique in the high jump that contrasts with the Western Roll and was first used by Bruce Quande, though Dick Fosbury, whose gold medal in the 1968 Summer Olympics made it the dominant technique of the event as it remains today. Before Fosbury, most elite jumpers used to dive over head first, or had their own special techniques.
Beginning of Fosbury Flop.
Mid-Jump of Fosbury Flop. The method used is to sprint diagonally towards the bar, then curve and leap head first, back downwards over the bar in a rolling motion keeping as much of the body as possible below. When high jumpers perform this jump, they bend their body in such a way that it is possible for the athlete to clear the bar while his or her centre of mass does not.

http://www.iaaf.org/ IAAF International Association of Athletics Federations

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