Ground Reaction Force and Frontal Plane Motion in Human Movement

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Questions and Answers

What is the typical angle of inclination in the frontal plane for an adult?

  • 150°
  • 110°
  • 144°
  • 125° (correct)

What is the term for an increased angle of inclination in the frontal plane?

  • Coxa valga (correct)
  • Frontal plane motion
  • Coxa vara
  • Leg length discrepancy

What is the primary function of the hip during bilateral support of the HAT?

  • To provide stability to the upper body (correct)
  • To facilitate movement of the leg on the trunk
  • To initiate movement of the arms and head
  • To allow movement of the trunk on the leg

What is the effect of coxa valga on the weight bearing of the head of the femur?

<p>Increased weight bearing (B)</p> Signup and view all the answers

What is the effect of coxa vara on the moment arms of gluteus medius and minimus?

<p>Decreased moment arms (D)</p> Signup and view all the answers

In a closed kinematic chain, which part of the body is moving?

<p>The upper body is moving on the leg (D)</p> Signup and view all the answers

At what stage of life is the angle of inclination in the frontal plane typically 150°?

<p>Infancy (D)</p> Signup and view all the answers

What is the name of the kinematic chain where the movement of the leg is on the trunk?

<p>Open kinematic chain (B)</p> Signup and view all the answers

In optimal posture, what is the characteristic of the line of gravity in the coronal plane?

<p>It divides the body into two symmetrical parts (A)</p> Signup and view all the answers

What is the term for a decreased angle of inclination in the frontal plane?

<p>Coxa vara (B)</p> Signup and view all the answers

What is the term for the hip's ability to support the head, arms, and trunk on one leg?

<p>Unilateral support of HAT-L (B)</p> Signup and view all the answers

What is the direction of the external flexion moments in a flexed-knee posture?

<p>Acting around the hip, knee, and ankle joints (D)</p> Signup and view all the answers

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