Torso rotators

Torso rotation

— an exercise to rotate the upper body in a sitting position around a vertical axis, with weights. Most of the machines with this function are of a specialized variety — torso machines (see "Product type"). The exercise itself involves almost exclusively one type of muscle — the oblique muscles of the abdomen; among other things, it is considered very effective for correcting "imperfections" in the waist area. You can also perform such exercises with free weight (the traditional option is a barbell bar on your shoulders), but the machine is still more convenient for this. It allows you to do without excessive load on the shoulders and spine and also does not give inertia when turning, unlike the barbell.