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High jump, in which athletes jump over horizontal bars. Long jump, where the objective is to leap horizontally as far as possible. Pole vault, in which a person uses a long, flexible pole as an aid to jump over a bar. Triple jump, the objective is to leap horizontally as far as possible, in a series of three jumps
The height used by most athletes is usually quite low in the early stages of training. The key is how high the athlete jumps in relation to the height of the takeoff platform. Technique and jump height are most important at this time. While the body is dropping, the athlete consciously prepares the muscles for the impact by tensing the muscles.
The height of a jump may be increased by using a trampoline or by converting horizontal velocity into vertical velocity with the aid of a device such as a half pipe. Various exercises can be used to increase an athlete's vertical jumping height.
Schoolchildren in the US performing jumping jacks. A jumping jack, also known as a star jump and called a side-straddle hop in the US military, is a physical jumping exercise performed by jumping to a position with the legs spread wide and the hands going overhead, sometimes in a clap, and then returning to a position with the feet together and the arms at the sides.
"Each phase of the sequence included a 2-min warm-up, followed by 5 min of jumping. The four heights, measured by the distance the subjects’ feet were elevated above the trampoline bed, were 18, 37, 75, and 100 cm. A 5- to 10-min rest period was provided between each jumping level." The jump heights in inches were: 7", 14.6", 29.5" and 39.4".
A vertical jump or vertical leap is the act of jumping upwards into the air. It can be an exercise for building both endurance and strength, and is also a standard test for measuring athletic performance. [1] It may also be referred to as a Sargent jump, named for Dudley Allen Sargent.