Which axis is associated with lateral bending movements?

Which axis is associated with lateral bending movements?

• A. X-axis
• B. Y-axis
• C. Z-axis
• D. None of the above

Answer: (C)

Lateral bending is the act of tilting the trunk to one side, which occurs by rotating around the front-to-back line of the body. In this axis system, that line is the Z-axis. So lateral bending movements are described as happening about the Z-axis. The other axes correspond to movement in different planes, but they don’t capture the side-to-side bend.

Lateral bending is the act of tilting the trunk to one side, which occurs by rotating around the front-to-back line of the body. In this axis system, that line is the Z-axis. So lateral bending movements are described as happening about the Z-axis. The other axes correspond to movement in different planes, but they don’t capture the side-to-side bend.