A hand, wrist and forearm exercise device includes a resistive hand grip exerciser disposed at each end of a flexible, elongated resilient member. The flexible, elongated resilient member is arcuately bendable along a longitudinal axis and also one end is twistable relative to the another end along the longitudinal axis.

An exercise device is described. An exercise device including a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite end of the body, and first and second sides extending between the first and second ends; a first axle connected to a first wheel, the first axle also connected to the body proximate the first end at a first hub; a first spring having a first spring end, the first spring positioned at least partially within the first axle, with the first spring end slidably connected to one of the first wheel and the first hub at a first junction, wherein the first junction is configured to convey torque between the one of the first hub and the first wheel and the first spring end.

An exercise device is described. An exercise device including a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite end of the body, and first and second sides extending between the first and second ends; a first axle connected to a first wheel, the first axle also connected to the body proximate the first end at a first hub; a first spring having a first spring end, the first spring positioned at least partially within the first axle, with the first spring end slidably connected to one of the first wheel and the first hub at a first junction, wherein the first junction is configured to convey torque between the one of the first hub and the first wheel and the first spring end.

A collapsible cycling exerciser is an apparatus that effectively exercises a user through full ranges of motion and varied resistance. The apparatus includes a first support post, a second support post, a left handlebar, a right handlebar, a left pedaling mechanism, a right pedaling mechanism, and a torsional resistance mechanism. The first support post and the second support post, together, upholds and positions the user. The left handlebar and the right handlebar guide the linear movement of the arms. The left pedaling mechanism and the right pedaling mechanism guide the rotary movement of the legs. The torsional resistance mechanism applies resistance to the left handlebar, the right handlebar, the left pedaling mechanism, and the right pedaling mechanism. In the preferred embodiment of the apparatus, a hinged connection secures the first support post and the second support post to each other so that the apparatus is collapsible.

The invention relates to a portable sports device and particularly a training device for muscle building, with at least one handle and a centrifugal mass operatively connected thereto and mounted on a shaft, which is rotatable by pulling a pull rope fixed to and wound up on the shaft, and with at least one removable additional mass element arrangeable on the centrifugal mass, the at least one additional mass element being configured in the form of a circular ring piece or a circular segment piece.

An adjustable resistance exercise machine for providing variable resistance forces on a pull cable extending from the machine. The adjustable resistance exercise machine generally includes a plurality of power springs that may be selectively engaged using an adjustment mechanism. By engaging springs with different forces, the resistance may be adjusted incrementally as preferred for performing different exercises. The adjustable resistance exercise machine may be connected to various structures, either below or above an exerciser, to allow the exerciser to choose whether to pull the pull cable up or down during exercise.

A golf club has a shaft having a shaft axis; a club head connected to a first end of the shaft; and a grip connected to a second end of the shaft opposite the club head. The grip is provided with a first grip part and a second grip part, wherein the first grip part is torsionally movable to a limited extent relative to the second grip part and relative to the shaft about the shaft axis.

An abdominal exercise apparatus can include a track, at least one rolling member, a cart, and a base. The track can extend between first and second ends. The rolling member can be moveable along the track. The cart can support the rolling member for the movement along the track and be grasped by the user during exercise. The base can be engaged proximate to the first end and have a surface configured to receive the knees of the user during exercise. The second end can be pivotally movable about the base over an arcuate range by the user while exercising during the rectilinear and rolling movement along the track by the at least one rolling member. The apparatus can also include a structure such as a helical spring for resisting pivotal movement that is elastically deformable.

An exercise machine including a support frame having a handle structure affixed to a base structure is described. The handle structure can provide hand support for a user using the machine. The base structure can provide floor support for the machine. One or more resilient pedaling assemblies may be pivotably coupled with the base structure to guide exercising movements of the user. Each resilient pedaling assembly may comprise an elastic element to provide a torsion force, a foot pad for resting a corresponding foot of the user and pivot assemblies rotatably engaged with the elastic element and the foot pad. Movement of the foot pad may cause deformation of the elastic element via the pivot assemblies. The deformation can induce the torsion force from the elastic element to provide reciprocal foot pedaling effects to the user.

A torsion pivot device including an elastic element having an axis in a longitudinal direction is described. Two or more pivot structures may be engaged with separate portions of the elastic element along the axis to allow the pivot structures to exert torque force to the separate portions of the elastic element. An axial guide mechanism may be defined through the elastic element substantially along the axis. The pivot structures may be rotatably coupled with the elastic element via the axial guide mechanism to allow the pivot structures to pivot or rotate relative to each other around the axis. The elastic element may be deformed by the torque force via the pivoting or rotation of the pivot structures. Twisting tension may be induced by the deformed elastic element to counter the torque force.