Ground reaction forces are present during which portion of gait?

Ground reaction forces are present during which portion of gait?

• A. Stance phase
• B. Swing phase only
• C. Terminal swing only
• D. Mid-swing only

Answer: (A)

Ground reaction forces are the forces the ground exerts on the body as a limb interacts with it. They appear whenever the foot is in contact with the ground, which happens during the stance phase of gait. In the swing phase, the foot is off the ground, so there’s no ground contact to generate these forces. During stance, the body’s weight is transmitted through the limb and propulsion is produced, leading to vertical forces that rise as you load the limb and then as you push off. The swing phase lacks ground contact, so ground reaction forces are not present then. So ground reaction forces are present during the stance phase.

Ground reaction forces are the forces the ground exerts on the body as a limb interacts with it. They appear whenever the foot is in contact with the ground, which happens during the stance phase of gait. In the swing phase, the foot is off the ground, so there’s no ground contact to generate these forces.

During stance, the body’s weight is transmitted through the limb and propulsion is produced, leading to vertical forces that rise as you load the limb and then as you push off. The swing phase lacks ground contact, so ground reaction forces are not present then.

So ground reaction forces are present during the stance phase.