Abstract: An exercise bicycle includes a frame and a driven wheel. The frame has a base, a driven member which has an end pivotably connected to the base, and a contacting portion disposed on the driven member. The driven wheel, which is rotatably connected to the base, includes a rolling face contacted with the contacting portion. When the driven wheel is driven to rotate, the driven member will pivot reciprocatingly on a point where the driven member is connected with the base.

Abstract: An exercise bicycle includes a frame and a driven wheel. The frame has a base, a driven member which has an end pivotably connected to the base, and a contacting portion disposed on the driven member. The driven wheel, which is rotatably connected to the base, includes a rolling face contacted with the contacting portion. When the driven wheel is driven to rotate, the driven member will pivot reciprocatingly on a point where the driven member is connected with the base.

Abstract: A body exercising trainer comprises an elongated frame, two supports coupled with two ends of the frame, two sliding seats slidably mounted on the frame and moved back and forth along a longitudinal axle of the frame, each of the sliding seats being provided with a foot stepping, two elastic members installed in the frame for resiliently holding the sliding seat, and two armrests pivotally mounted on the two supports for a user holding by hands to get balance.

Abstract: An exercise machine includes a base, a seat mounted on the base and provided with a backrest, a leg-exercising mechanism mounted on the base, and two hand grips connected to the leg-exercising mechanism. The seat and the backrest are provided with two rocking frames fastened thereto. The rocking frames are provided with a straight support portion, and an arcuate portion capable of a rocking act to cause the backrest to rest on a floor surface by the straight support portion of the rocking frames. The arcuate portion is further capable of the rocking act to cause the backrest to revert to the previous upright position relative to the floor surface.

Abstract: An exercise machine includes a base on which a swiveling frame is pivotally mounted. The swiveling frame is provided at one end with a seat, and at another end with a leg-supporting frame pivoted therewith by a position controlling seat. The base is further provided with a backrest frame pivoted therewith by an adjustment seat. The leg-supporting frame and the backrest frame can be adjusted to be positioned at a specific angular position so as to provide a user of the exercise machine with the damping force of a desired magnitude.