First of all, lie prone on the back of the training bench, sit on the training bench with your pelvis steady, press the pedal back with both feet, keep your upper body in a neutral position, hold the handles at both ends, pull up and contract your back when the shoulder strap sinks, and when you restore, keep the muscles in tension, and repeat in turn.
Features: The angle of the leaning can be adjusted hydraulically, and the handles on both sides have three levels of adjustment, which can fully practice to the middle and upper and middle and lower obliques, and the contraction of the handle is very perfect for the back width.