The HOS - E108 Rope glute mainly targets the gluteal muscle groups, especially the gluteus maximus. During the backward kicking motion, the gluteus maximus actively contracts and exerts force. This helps to enhance the strength and size of the gluteus maximus, shaping a more toned and shapely buttock. Meanwhile, the hamstrings on the back of the thighs also work in tandem, playing an auxiliary role, thus improving their strength and flexibility.