Circle Saw

External Oblique (opposite side), Internal Oblique (same side), Erector Spinae (same side), Semispinalis (opposite side), Deep Posterior Spinal Group (opposite side)

• Rotates the spine to the side while working with the spinal flexors to roll down and up.

Rectus Abdominis, Internal Oblique, External Oblique

• Maintain c-curve and flexion in the spine when rounding over the legs.

• Create spinal flexion as the spine articulates down and up.

• Spinal stabilizers create lumbo-pelvic stability and assist with the control of the spinal articulation.

• Shoulder extensors keep a downward pressure on the bar and work with the scapular depressors to create shoulder stabilization; also assist with the row by pulling the arm back and resisting the springs as the arm straightens.

• Scapular depressors keep the shoulders down away from the ears.

• Scapular adductors (retractors) aid in keeping the shoulders from hunching or rounding forward.

• Scapular upward rotators work with the scapular depressors to allow for overhead by drawing the scapulae down and under the armpits.

• Hip flexors aid the spinal flexors in rolling down and up but should not overwork.

• Knee extensors keep the knees straight, especially when lying flat.

• Dorsiflexors keep the feet flexed against the poles when sitting.