Which of the following is NOT a spinal mobility exercise?

• A. Long Box Rocking
• B. Long Spine Massage
• C. Jackknife
• D. Long Box Grasshopper

Answer: (D)

The question asks you to identify which exercise does not primarily move or articulate the spine. Spinal mobility exercises involve moving the spine through its available ranges, segment by segment, often coordinating with the pelvis and breath to articulate the thoracic and lumbar regions (and sometimes the cervical region) in a controlled way.

Long Box Rocking is a classic spine articulation drill: you segmentally flex and extend the spine over the box, rolling through each vertebral joint to lengthen and mobilize the back.

Long Spine Massage similarly emphasizes spinal movement and lengthening along the spine, guiding the body through controlled curling and lengthening that promotes mobility across the spine’s regions.

Jackknife is a well-known spinal articulation exercise as well, combining controlled flexion and extension of the spine with stabilization of the pelvis to articulate the spine in a flowing sequence.

Long Box Grasshopper, on the other hand, centers on leg and hip work with the spine held relatively stable. The emphasis is on controlling the pelvis and limbs while maintaining neutral alignment of the spine, rather than moving the spine through its mobility arcs. That’s why it isn’t considered a spinal mobility exercise.