During Back Extension #3 Posterior Double, which movement pattern best describes the exercise?

During Back Extension #3 Posterior Double, which movement pattern best describes the exercise?

• A. Isolate the core with minimal back involvement
• B. One leg stabilizes while the other extends
• C. Both legs and upper body work together, lifting through the back with neck length and abs engaged
• D. The arms perform a rowing motion only

Answer: (C)

The movement pattern being tested is a coordinated posterior chain effort where both legs and the upper body work together to lift through the back, with the neck staying lengthened and the abs braced to stabilize. This describes spinal extension driven by the glutes, hamstrings, and erector spinae, with the torso staying rigid and the head/neck aligned with the spine. The arms aren’t the primary mover here; they aren’t just performing a rowing action, and the exercise isn’t about isolating the core or using a single leg for stabilization.

The movement pattern being tested is a coordinated posterior chain effort where both legs and the upper body work together to lift through the back, with the neck staying lengthened and the abs braced to stabilize. This describes spinal extension driven by the glutes, hamstrings, and erector spinae, with the torso staying rigid and the head/neck aligned with the spine. The arms aren’t the primary mover here; they aren’t just performing a rowing action, and the exercise isn’t about isolating the core or using a single leg for stabilization.