Back extension
Back extension is a strength training exercise. It is done for strengthening lower back muscles.
Using equipment, it can be done by lowering the body from a stand and raising back using the roman chair, or using a back extension machine where body pushes a weight backwards.
Without using equipment, it is done by lying face-down on the floor, and lifting the torso and arms together up off the floor. This is also called hyperextension.
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