Abstract: Disclosed is a treadmill including a walking belt driven forward and backward and when changed from a forward moving mode to a backward moving mode, which can re-adjust a driving speed of a servomotor and an inclination angle of the walking belt. The treadmill according to the present invention includes: selector for driving the walking belt backward; the selector for driving the servomotor backward by receiving a command of the selector for driving the walking belt backward; when the servomotor is driven backward, a selector for selecting the velocity of the servomotor to input the selected velocity data to the servomotor; a selector for selecting an inclination angle of the walking belt to drive an inclination angle motor based upon the selected inclination angle; and a maintainer for maintaining the tension of the walking belt.

Abstract: An indoor bicycle includes a bicycle chassis having a frame and pedals, a base on which the bicycle chassis is longitudinally fixed, the first housing having the first support that supports one end of the base, and the second housing having the second support that supports the other end of the base. The first panel is fixed to the lower surface of the first support. The first axle extends longitudinally from the first housing, and the first aperture is formed in the first panel and pivotally receives the first axle. The first axle, after passing through the first aperture formed in the first panel, is received in a counter aperture provided in a supporting member. The second panel is fixed to the lower surface of the second support. The second axle extends longitudinally from the second housing, and the second aperture is formed in the second panel for pivotally receiving the second axle.