Fecha de publicación: 20/09/2018 Fuente: WIPO "bee" The present invention provides an exercising device which strengthens femoral muscle and a gluteus while protecting knees and ankle joints. According to the present invention, a user moves legs while a lower end of an arm is put on a thigh of the user when the user sits or lies, in order to minimize loads or stress applied to the knees and the ankle joints in doing exercises fitted to the femoral muscle and the gluteus exercise such as leg presses or total hips, fixed indoor cycling, and outdoor cycling such that the femoral muscle and the gluteus are strengthened while knees and ankle joints are protected. The exercise device of one embodiment of the present invention has a structure comprising: a seat unit on which a user sits or lies; and an arm which is mounted on a hip joint of the user in a sagittal plane to be able to rotate, and of which one end is put on the thigh of the user to be able to rotate. According to one embodiment of the present invention, the exercise device of one embodiment has various resistant bodies which generate resistant forces against the rotation of an arm unit, and also has a device whose rotational shaft is changed by the user. According to the other embodiment of the present invention, the exercise device of other embodiment comprises two different rotational shafts in one arm. Furthermore, the exercise device has a bicycle form. A rotational shaft of an arm and a door in the exercise device is placed on a hip joint, and one end of the arm is put under a thigh. According to a rotation of an arm unit (32), the device is rotated when the arm unit is rotated in a clockwise, and the device is idly rotated when the arm unit is rotated in a counterclockwise direction to drive a rear wheel such that the bicycle goes ahead. COPYRIGHT KIPO 2018