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  1. Glossary
  2. Ground Reaction Force
Ground Reaction Force - Glossary Term Illustration

Ground Reaction Force

Ground reaction force (GRF) is the force exerted by the ground on the body in contact with it. For example, when a runner's foot strikes the ground with a force equal to the mass of the individual times their acceleration due to gravity, momentum, and muscular exertion, the ground exerts an equal and opposite force on the runner's foot. It is an important concept in biomechanics and is often measured using force plates. GRF is influenced by factors such as body weight, speed, and surface type.

Ground Reaction Force

Ground reaction force (GRF): The force exerted by the ground on the body in contact with it. For example, when a runner's foot strikes the ground with a force equal to the mass of the individual times their acceleration due to gravity, momentum, and muscular exertion, the ground exerts an equal and opposite force on the runner's foot.

  • GRF is often measured in research studies using force plates as a means of quantitatively measuring the force generated by an individual.

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