Give examples for concentric and eccentric muscle contractions in gait cycle?

Concentric muscle contractions:

* Swing phase: The quadriceps muscles contract concentrically to extend the knee and bring the lower leg forward.

* Stance phase: The gluteal muscles contract concentrically to extend the hip and move the body forward.

Eccentric muscle contractions:

* Loading response: The quadriceps muscles contract eccentrically to decelerate the lower leg as the foot strikes the ground.

* Mid-stance: The gluteal muscles contract eccentrically to control the descent of the body as the knee bends.