EXSC 4540 partic - gait

Front

What are ground reaction forces during the stance phase of gait?

Back

Ground reaction forces are the forces exerted by the ground on a body in contact with it, which occur during the stance phase of gait. There are typically two peaks in these forces: one for absorbing impact and another for pushing off.

Front

What is the difference between a step and a stride in gait?

Back

A step is the distance covered by one foot during walking, while a stride is the distance covered when both feet have completed a cycle, which is equal to both a left and right step added together.

Front

What is the significance of initial contact and toe-off in gait?

Back

Initial contact is the moment the foot strikes the ground, which has less force than toe-off, the moment the foot leaves the ground. This difference is crucial for understanding force distribution during walking.

Front

Which phase of walking gait is the shortest?

Back

The double support phase is the shortest phase of walking gait, occurring when both feet are in contact with the ground.

Front

What is the loading response in gait?

Back

The loading response occurs from initial contact until mid-stance, where the body absorbs the impact of landing.

Front

What is the role of eccentric force absorption in gait?

Back

Eccentric force absorption refers to the muscle's ability to lengthen while contracting, which is crucial for absorbing impact during the initial contact phase of gait.

Front

What is the role of concentric force during push-off in gait?

Back

Concentric force during push-off involves muscles shortening to generate force that propels the body forward as the foot leaves the ground.

Front

How do vertical ground reaction forces change during the gait cycle?

Back

Vertical ground reaction forces typically peak at initial contact and again at toe-off, reflecting the body's weight and the forces exerted during walking.

Front

What is the stance phase of gait?

Back

The stance phase of gait is the period when the foot is in contact with the ground, comprising initial contact, loading response, mid-stance, terminal stance, and toe-off.

Front

What is the swing phase of gait?

Back

The swing phase of gait is the period when the foot is not in contact with the ground, allowing the leg to move forward in preparation for the next step.