Which statement best describes Back Extension #3 Posterior Double involvement?

Which statement best describes Back Extension #3 Posterior Double involvement?

• A. The head is tucked to shorten the neck
• B. One leg lifts while the other stabilizes
• C. Both legs and upper body lift together, with neck long and abs engaged
• D. The movement emphasizes neck flexion

Answer: (C)

Back Extension #3 Posterior Double involves a coordinated lift of both the legs and the upper body while keeping the neck long and the abs engaged. This describes using the posterior chain (lower back, glutes, hamstrings) to extend the spine and hips together, with the core stabilizing the pelvis to protect the lower back. Keeping the neck long ensures the spine remains in extension rather than flexing or tucking the chin, which would shorten the neck and disrupt alignment. Lifting only one leg or tucking/neck flexion would break the bilateral, lengthened extension pattern, making the described description the best fit.

Back Extension #3 Posterior Double involves a coordinated lift of both the legs and the upper body while keeping the neck long and the abs engaged. This describes using the posterior chain (lower back, glutes, hamstrings) to extend the spine and hips together, with the core stabilizing the pelvis to protect the lower back. Keeping the neck long ensures the spine remains in extension rather than flexing or tucking the chin, which would shorten the neck and disrupt alignment. Lifting only one leg or tucking/neck flexion would break the bilateral, lengthened extension pattern, making the described description the best fit.