What is the appropriate developmental sequence of running of the following descriptions of arm action?
I. Spinal rotation continues to be the prime mover of the arms.
II. Spinal rotation swings the arms bilaterally to counterbalance rotation of the pelvis and swing leg.
III. The humerus begins to drive forward and back in the sagittal plane, independent of spinal rotation.
IV. The arms do not participate in the running action.

Question

Quizplus · Accepted Answer

The correct sequence starts with IV, where initially in development, the arms do not participate in the running action. Then, II, as development progresses, spinal rotation swings the arms bilaterally to counterbalance rotation of the pelvis and swing leg. Following this, I, spinal rotation continues to be the prime mover of the arms, indicating a more integrated but still primitive movement pattern. Finally, III, the humerus begins to drive forward and back in the sagittal plane, independent of spinal rotation, representing a more mature running form.

What Is the Appropriate Developmental Sequence of Running of the Following