Running

Running

Running is a means of terrestrial locomotion allowing humans and other animals to move rapidly on foot. It is simply defined in athletics terms as a gait in which at regular points during the running cycle both feet are off the ground. This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight and the center of gravity vaults over the legs in an inverted pendulum fashion. A characteristic feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride occur simultaneously, with energy storage accomplished by springy tendons and passive muscle elasticity. The term running can refer to any of a variety of speeds ranging from jogging to sprinting.

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Famous quotes containing the word running:

    Have Johnny fix him a sandwich or something. Any man running for the Senate has to wantsomething. Right, Bud?
    Okay, start the bus then. And drive them over a cliff.
    Jeremy Larner, U.S. screenwriter, and Michael Ritchie. John J. McKay (Melvin Douglas)

    People stress the violence. That’s the smallest part of it. Football is brutal only from a distance. In the middle of it there’s a calm, a tranquility. The players accept pain. There’s a sense of order even at the end of a running play with bodies stewn everywhere. When the systems interlock, there’s a satisfaction to the game that can’t be duplicated. There’s a harmony.
    Don Delillo (b. 1926)

    Kicking the heart
    with pain’s big boots running up and down
    the intestines like a motorcycle racer.
    Anne Sexton (1928–1974)