Abstract: A passive muscle training device includes a base having at least one first link and at least one second link. At least one first rod is pivotably connected to the at least one first link. At least one second rod is pivotably connected to the at least one second link. The at least one first rod and the at least one second rod each have a handle extending beyond the cover on the base. A power input end is pivotably connected to the first rod and drives an eccentric portion of a shaft to swing the at least first rod and the at least one second rod alternatively. The user holds the two handles and the user's muscles are trained by centripetal contraction and centrifugal contraction due to the movement of the handles.

Abstract: A reversibly slide-swingable balance-training apparatus includes a base unit, a transmission unit mounted in the base unit and providing a movement-constraining eccentric shaft and a power-maintaining rotary member for rotating the movement-constraining eccentric shaft continuously, one or a pair of linkages each having a first link pivotally connected to the movement-constraining eccentric shaft of the transmission unit, a second link pivotally coupled between the first link and the base unit and a third link pivotally connected to the second link, and a platform pivotally connected to the first link and third link of each linkage. Subject to the oscillation motion of the links of the linkage counteracting the postures of the user and the functioning of the movement-constraining eccentric shaft and the continuation of the energy of the power-maintaining rotary member, the platform is reversibly slide-swinging for best balance training.

Abstract: An exerciser includes a mechanical unit having a first mechanical member and a second mechanical member operable by one part of the body of a human being, a speed-controllable power drive having a first connection end and a second connection end respectively connected to the first mechanical member and the second mechanical member and being drivable by a power source to move the second mechanical member in making a first action and a second action relative to the first mechanical member, and an induction control unit having a first sensor set installed in the mechanical unit and a second sensor set installed in the speed-controllable power drive for controlling the operation of the speed-controllable power drive.

Abstract: A multi-dimensional training device for training arm and wrist and capable of changing weight includes a connection member, a first turning member connected to the connection member, a first handle pivoted on the first turning member, a second turning member pivoted on the connection member, and a second handle pivoted on the second turning member. The second turning member may be disassembled to mount weight member on the connection member or take the weight member off from the connection member. User may hold the first and second handles to turn or move the training device of the present invention for training more muscles and joints.

Abstract: A multi-dimensional training device for training arm and wrist and capable of changing weight includes a connection member, a first turning member connected to the connection member, a first handle pivoted on the first turning member, a second turning member pivoted on the connection member, and a second handle pivoted on the second turning member. The second turning member may be disassembled to mount weight member on the connection member or take the weight member off from the connection member. User may hold the first and second handles to turn or move the training device of the present invention for training more muscles and joints.

Abstract: A one way wheel assembly of the present invention includes a first wheel, a second wheel, and a telescoping device pivotally connected to the first wheel and the second wheel respectively. The telescoping device provides a tolerance that first wheel may move toward the second wheel and touch it. So that, when the first wheel is moved along a direction, away from the second wheel, the first wheel will draw the second wheel through the telescoping device. On the contrary, when the first wheel is moved along an opposite direction, toward the second wheel, the first wheel will touch the second wheel and cause a jam to stop both of the wheels.