An intelligent dual-function core machine powered by a low-voltage, high-torque motor. It provides precise, smooth, and fully controllable resistance for two training modes: abdominal flexion (crunch) and back extension. This equipment effectively targets the rectus abdominis, external obliques, erector spinae, and lower-back stabilizers—making it an ideal choice for improving core strength, posture, and injury prevention. It is especially suited for rehabilitation users and older adults requiring high safety standards.