Which are eccentric functions of the psoas major?
A)restrains/slows extension of the thigh and posterior tilt of the pelvis at the hip joint
B)restrains/slows flexion of the thigh and anterior tilt of the pelvis at the hip joint
C)restrains/slows lateral rotation and medial rotation of the thigh at the hip joint
D)restrains/slows lateral flexion of the trunk at the spinal joints and lateral rotation of the leg at the knee joint

Question

Quizplus · Accepted Answer

The psoas major, during eccentric contraction, helps to control the movement by slowing down the extension of the thigh and posterior tilt of the pelvis at the hip joint. This is because eccentric contractions occur when the muscle lengthens under tension, often to decelerate a body part or resist gravity, which in this case applies to controlling the motion of extending the thigh and tilting the pelvis posteriorly.

Which Are Eccentric Functions of the Psoas Major