Short Box Series: Round Back

Classical Repertoire Beginner Seated Core Integration 📦 Sitting Box

Articulating spinal flexion exercise over the short box, focusing on deep abdominal wall engagement.

Schematic — Short Box Series: Round Back Reformer · 1 strong or 1 medium spring · Footbar Down · Headrest Down

Teaching Precautions

Common precautions, not exhaustive. Screen every client and refer when in doubt.

Osteoporosis / Osteopenia: Avoid loaded spinal flexion. Substitute with neutral spine variations.

Spring Tension 1 strong or 1 medium spring

Headrest Down

Transverse Abdominis (Primary)Rectus Abdominis (Secondary)Obliques (Secondary)Multifidus (Secondary)

Sit tall on the short box with feet strapped securely, pelvis tucked slightly in a C-curve, arms crossed over chest.

Inhale to prepare, exhale to articulate back halfway toward the carriage, then return up over the pelvis with control.

Form

"Maintain the curve in your spine like you are leaning over a beach ball."

Breath

"Exhale to curl back, inhale to return up over the pelvis."

Articulation

"Round through the spine one vertebra at a time — no hinging from the hips."

Support the trunk by placing the hands under the thighs to reduce the load on the abdominals.

Reach the arms forward long to lengthen the lever and deepen the curl.

For low back pain, curl back only to midway with the hands under the thighs for support, and stop before the low back rounds under load.

The rest of the Short Box Series family.