The Impulse IF9334 Ab and Back Extension machine is designed to effectively target the rectus abdominis, lats (latissimus dorsi), erector spinae, and overall abdominal, back, and waist muscles. This versatile equipment allows users to engage in exercises that strengthen and tone the core and back muscles simultaneously. The rectus abdominis, commonly known as the abs, are engaged during abdominal flexion movements, while the lats contribute to various pulling motions that engage the back. The erector spinae muscles, located along the spine, are also effectively targeted to enhance back strength and stability. By using the IF9334 machine with proper form and resistance, users can achieve improved core strength, enhanced posture, and increased stability in the abdominal and back regions. This machine offers a comprehensive workout solution for individuals looking to strengthen their core and back muscles efficiently.