In general, exercises for strengthening femoral muscle and gluteus muscle include leg extensions, leg curls, and total hips. According to a feature of the present invention, exercise equipment is configured as one in order to save a cost and a space from a point of a view of a person purchasing the exercise equipment. An exercise apparatus according to the present invention comprises: a seating unit which allows a user to sit or lie down; and an arm which is rotatably attached to pelvis of the user in a sagittal plane. One end of the arm is rotatably hung over a leg of the user. To do exercises for leg extension, leg curl, total hip, or hip thrust in one equipment by adjusting a height and a position of the seating unit, the exercise apparatus comprises: a device for adjusting the position and height of the seating unit; a device for adjusting a rotation start section of an arm unit; and a device for adjusting a length of the arm unit. COPYRIGHT KIPO 2022