Track Field Training How to Increase Your Vertical Jump
Hi I'm Les Whitley. I'd like to take a fewminutes now and talk to you about how to improve your vertical jump. Your vertical jump isagain your ability to push force into the ground to propel your body upward overcomingthe forces of gravity, traveling upward through space. Knowing where you start or knowingwhere your vertical jump is to begin with is a great way to start. Once you identifywhat your vertical jump is usually measured in inches you know where you want to go andhow far you want to progress from as little as a gain of one inch up to three inches overthe course of a six to a twelve week time frame is actually a pretty good improvement.Putting force in the ground means that you
have got to get stronger, utilizing exercisessuch as the squat, to develop a good base of power for the lower body but then alsomaximizing the transfer of that power through incorporating exercises like the power cleanor the overhead snatch, the olympic movements which involve very speed oriented movementsto that you are maximizing that power output in minimal time. The vertical jump is a veryquick movement. You are putting maximal force in a very short amount of time. The otherthing becomes technique ideally setting yourself up as a spring, springing and loading yourselfup into a position, not to overcompensate by staying too long in a deep position sothat the muscles become taxed and fatigued.
You want to set yourself up by causing a nicespring effect swinging your arms down which preloads those muscles engaging the musclesof the hips, the muscles of the lower body, the calves and then forcefully swinging yourarms up high to again maximize that vertical leap so arms start up high, forceful drivedown and then rebound for maximal height.
An athlete uses physics to shatter world records Asaf BarYosef
In the early 1960s, Dick Fosbury tried his hand at almost every sport, but never excelled at anything, until, at the age of 16, he turned to the high jump. But when he couldn't compete against the strong athletes at his college using the standard high jump techniques of the time, Fosbury tried to jump a different way: backwards.
Instead of jumping with his face towards the bar, bringing each leg over in the traditional straddle method, he jumped with his back towards the bar. Fosbury improved his record by over half a foot, and left his coaches amazed by this strange new style of high jumping. During the next few years,
Fosbury perfected his high jump style, won the U.S. National trials, and assured his place in the 1968 Olympics in Mexico. In the Olympic Games, Fosbury amazed the world with his new technique, winning a gold metal with an Olympic record leap of 2.24 meters. By the next Olympic Games, almost all of the competing of high jumpers
had adopted what came to be known as the Fosbury Flop. What's the secret behind the techniqueé It lies in a physics concept called the center of mass. For every object, we can locate the average position of all of its mass by taking into account how the mass
is spread around the object. For instance, the center of mass of a flat, rectangular object of uniform density will be in the intersection of both diagonals, in equal distance from each corner. We can find the center of mass for other objects by similar calculations, or by finding the object's balancing point,
which lies right underneath its center of mass. Try balancing a broom by holding it and slowly bringing your hands together until they meet. This balancing point lies right underneath the broom's center of mass. We humans also have a center of mass. When most people stand up, their center of mass is around the belly,