The exercise equipment includes a base, a resilient element, and a positioning mechanism. The base has two bodies which are selectively movable relatively. The two sides of the resilient element are connected to the two bodies. The positioning mechanism is adapted for operation to control the movement of the two bodies.

A resilient rod that provides adjustable directional resistance is disclosed. In one aspect of the invention, a resistance level may be determined based on a thickness of the rod and a position of an applied force with respect to a fulcrum point. In another aspect of the invention, at least one spine may be attached to the beam to increase a diameter of the beam along one axis. A resistance level may be determined based on a thickness of the rod, a position of an applied force and an orientation of the at least one spine with regard to the direction of the applied force. In other aspects of the invention, the resilient rods may be incorporated into various equipment that provide for adjustable resistance levels. In still other aspects of the invention, the resilient rod may be incorporated into medical devices that provide adjustable support for injured limbs or joints.

Methods for instructing a user to perform head and neck exercises with head and neck apparatuses are disclosed. The apparatus may include a member operatively arranged with a valve mechanism with a threshold pressure. The apparatus may further include an acoustic apparatus, membrane, chromogenic material, or moveable element that may be configured to respond when the pressure within the member is greater in magnitude than the threshold pressure. The head and neck exercise apparatus may also include a member operatively arranged with an acoustic apparatus, membrane, chromogenic material, or moveable element that may be configured, without a valve mechanism, to respond when the absolute pressure within the member is greater in magnitude than a threshold absolute pressure.

A system, and method, for training athletes to increase power is provided in a flexible barbell for enhancing weight lifting exercises. The flexible barbell has an elongated shape comprising ends. At least one flexible bar may be included when an elongated shape with a center is used. Weights are attached to the shape near the ends. The shape bends relative to a tangent to the center in response to the center of the flexible barbell being moved.

In one example, a muscle exercise device includes a first arm, and a second arm rotatably connected to the first arm, and the second arm and first arm are movable to cooperatively define a recess. The muscle exercise device also includes a resistance element configured to reside in the recess and be compressed between the arms.

A knee rehabilitative device permits a user to provide resistive stretching caused when the leg or other joint is extended or straightened, facilitating exercise and strengthening of the user's muscles and improved flexibility in the area of the knee or other joint area.

Described herein is a muscle trainer including a first and a second curved, elongate spring element, the two spring elements being arranged with their concave sides facing each other, having joint elements at their respective end areas and being connected to each other at their two end areas via joints formed from the joint elements. Also described herein is a method for producing such a muscle trainer.

A stationary jumping and trick bike is disclosed. An example device includes a frame assembly having a handlebar on a forward portion of the frame assembly and a seat on the frame assembly. A leg member including a leaf spring is connected to the frame assembly by a bracket having a plurality of ports selectable for pivotably attaching the leg member to the frame assembly to adjust pitch and/or angle of attachment of the leg member. A plurality of tensioners are connected between the leg member and the frame assembly. A foot rest is provided on the frame assembly. A standing and/or seated user holding the handlebar on the frame assembly can practice jumps and tricks by lifting and landing a lower portion of the leg member on a solid surface.

A squat exercise apparatus may comprise a support structure, a user adjustable resistance source and lift arms supported by the support structure and operably coupled to the user adjustable resistance source. In one implementation, the lift arms may be pivotable relative to the support structure about three orthogonal axes. In one implementation, shoulder pads carried by the lift arms may automatically pivot in response to pivoting of the lift arms relative to the support structure. In one implementation, at least one weight movement arm may have an adjustable length. In one implementation, a weight movement arm rest may be pivotable between a weight movement arm engaging position and a retracted position, wherein interacting portions of the weight movement arm rest and the weight movement arm are magnetically attracted to one another to magnetically retain the weight movement arm rest in the weight movement arm engaging position.

The portable balancing device is formed from two modules optionally connected by a width-adjusting mechanism. The primary component of the portable balancing platform is a module. Each module may also be referred to as half of the pair of modules. Each module is formed from an upper platform and a lower platform. The upper and lower platform are separated by compressible elements that deform under a user's weight. Alternatively, a single lower platform is common across both modules, with separate upper platforms.