Editing Hurdling (section)

==Technique==
{{more citations needed section|date=August 2012}}
[[File:Hurdling Kraenzlein.png|thumb|A sequence showing hurdling, from 1900. Today a distance to the first hurdle of more than 10m is advised.]]
[[File:100 m hurdles Memorial Van Damme 2010.jpg|thumb|100 m hurdles at the 2010 Memorial Van Damme. Priscilla Lopes-Schliep, Sally Pearson, Lolo Jones and Perdita Felicien]]
[[File:2008_Summer_Olympics_-_Men's_110m_Hurdles_-_Semifinal_1.jpg|thumb|right|2008 Summer Olympics – Men's 110&nbsp;m Hurdles – Semifinal 1]]
[[File:400 m hurdles Kerron Clement Berlin 2009.jpg|thumb|Kerron Clement running the 400m hurdles in Berlin, 2009 (at center)]]

In order to obtain the optimal hurdling technique, one must first learn the proper running techniques. It is important that the runner stays on the balls of his or her feet for the entirety of the race. This makes a fluid movement between each stage of the race.

There is a technique that is desirable to accomplish efficient hurdling action during a race. Many runners rely mainly on raw speed, but proper technique and well-planned steps leading up to and between each hurdle can allow an efficient hurdler to outrun faster opponents.  Generally, the efficient hurdler spends the minimum amount of time and energy going vertically over the hurdle, thus achieving maximum speed in the horizontal race direction down the track.

When approaching the first hurdle, athletes try to avoid [[stutter step]]ping (a term used to refer to the cutting of stride length before reaching a hurdle).  This cuts the runner's momentum and costs valuable time. Athletes attack the hurdle by launching at it from approximately 2m away (depending on the runner's closing speed); the lead leg extended yet slightly bent (because a straight leg leads to more time over the hurdle) so that the heel just narrowly clears the barrier's height. After launching, the trail leg is tucked in horizontally and flat, close to the side of the hip. The objective is to minimize center-of-gravity deviation from normal sprinting and reduce time spent flying through the air.

In order to hurdle properly and not simply jump over it, a runner must adjust his or her hips to raise them over the hurdles.  This involves the correct use of the lead leg, trail leg, and arm positions. The lead leg is the leg that goes over the hurdle first and should remain fairly straight. Upon crossing over the hurdle barrier, the runner's lead leg snaps down quickly landing roughly {{convert|1|m|ft|lk=off|abbr=off|sigfig=1}} beyond the hurdle. The trail leg follows the lead leg. The trail leg drives forward at the knee (not swinging, as swinging causes the trunk to straighten up), and pulls through to maintain stride length. An effective trail leg will be parallel to the top of the hurdle and will be as close to the top of the hurdle as possible. As the lead leg is being lifted over the hurdle, the opposite arm should cross the body parallel to the ground. This helps with the runner's balance and rhythm throughout the race.

In men's hurdles, it is usually necessary to straighten the leg at the top of the flight path over the hurdle, although a partial bend in the [[knee]] gains a faster push-off when the athlete hits the ground. The ability to do this depends on the runner's leg length.  As soon as the foot has cleared the hurdle, the knee starts bending again to lessen the effect of a long, slow pendulum. In women's hurdles, the lead leg is usually straight and the center of gravity does not rise relative to a normal running stride. Another way to view it is the “foot-path”: "shortest path up and the shortest path down". The opposite arm reaches farther forward and the elbow travels out to the side and then behind to make room for the trailing leg. The trailing leg also leads with the knee, but the foot and knee are horizontal, tucked up as tight as possible into the [[armpit]].

As soon as the lead leg begins its descent, a strong downward push is exerted to enable the trailing leg's knee to come up under the armpit and in front of the chest. This enables the recovery of some of the energy expended in the flight. As the lead leg touches down to the ground, it is critical that the runner remains in a sprint. As soon as his or her lead leg touches down, the trail leg arm drives the rest of the body forward.

In the 100m and 110m hurdle events, the fastest hurdlers use the three-step technique. This means that three large steps are taken in between all of the hurdles. In order to do this efficiently, hurdlers must take long strides and maintain their speed for the entire race. If a hurdler begins to slow down while three-stepping, they may not be able to make it through all of the hurdles and may have to switch to a four-stepping or five-stepping technique. When three- or five-stepping, a hurdler will use the same lead leg for all of the hurdles. If a hurdler four steps, they will have to switch lead legs at each hurdle.

A modern hurdle will fall over if a runner hits it.  There is no penalty for hitting a hurdle (provided this is not judged deliberate).  The misconception is based on old rules before the hurdles were weighted.  In the [[Athletics at the 1932 Summer Olympics|1932 Olympics]], [[Bob Tisdall]] famously won the Olympic gold medal in the 400m hurdles in World Record time, but was not credited with the record due to knocking over a hurdle.  There can be a disqualification if a hurdler knocks a hurdle into an opponent's lane and it is judged to have interfered with the opponent's ability to run the race. There are now specifications for the tipping weight of a hurdle (the weights need to be adjusted to correspond with the height of the hurdle) so hitting a hurdle theoretically slows down the rhythm of the hurdler.  However, pushing the hurdle with one's hands or running out of one's lane as a result of hitting the hurdle is cause for disqualification.  While hitting hurdles is not generally considered desirable, a few sprint hurdlers have succeeded despite knocking over many hurdles. Contact with hurdles can decrease speed and also result in disruption of a hurdler's technique. Some coaches suggest if you lightly "kiss" the hurdle with the side of the leg closest to the hurdle, it can help with the runner's speed by keeping the runner closer to the ground.<ref name="IAAF Rulebook"/>