Actions Lower Body

Question 1

Gluteus Maximus

Answer 1

Powerful extension of the hip joint, such as running, jumping, stair climbing and rising from a seated position.
Helps maintain an erect posture and assists in lateral rotation of the hip joint.
The upper fibres are involved in abduction of the hip joint.

Question 2

Gluteus Medius

Answer 2

As a whole, the muscle is the most powerful abductor of the thigh.
The anterior fibres assist with medial rotation of the thigh.
Gluteus medius steadies the pelvis on the leg when the opposite leg is raised.