Question

What is the GRF (Ground Reaction Force) in the gait cycle when the Center of Mass (COM) is over the foot?

1) Increased
2) Decreased
3) Constant
4) Cannot be determined

Answer 1

The Ground Reaction Force (GRF) is increased when the Center of Mass (COM) is over the foot during the gait cycle.

Step-by-step explanation:

The Ground Reaction Force (GRF) in the gait cycle when the Center of Mass (COM) is over the foot depends on the specific phase of the gait cycle. During the stance phase, when the foot is in contact with the ground, the GRF is increased. This is because the foot needs to counteract the force of gravity and provide support for the body's weight. As the foot pushes off during the propulsion phase, the GRF decreases until it reaches zero. Therefore, the correct answer is 1) Increased.