A grip exerciser has a first handle, a second handle, a connecting member and a spring. The first handle and the second handle both have a pivoting portion and a holding portion, a pivot is disposed through the pivoting portions of the first handle and the second handle to assemble the first handle and the second handle together; the first handle further has an escaping space at an inner edge for accepting the connecting member, and the second handle further has a closed surface at an inner edge; the closed surface further has a plurality of positioning protrusions located along a continuous line and capable of engaging with one end of the spring;

The present invention pertains to a spring resistance exercise machine including an adjustable spring carriage and anchor housing and having cable and pulley linkage assemblies attached to a plurality of springs, or other resistance sources. Each cable and pulley linkage assembly, which is independent of the other(s), can be used unilaterally (by one arm or one leg at a time) or bilaterally (by both arms or both legs at a time) during exercise resistance training (that is, training in which both limbs of a pair are used to simultaneously pull a certain resistance).

An exercise device is described which includes a platform having a first end and a second end opposite the first end; first and second wheels, wherein the first wheel is positioned proximate the first end and the second wheel is positioned proximate the second end and the first and second wheels are configured to roll across a surface as the exercise device is displaced along the surface; a first motor configured to apply a first torque to the first wheel where the magnitude of the first torque is related to the distance of the exercise device from a zero position and the direction of the first torque urges movement of the exercise device toward the zero position. Versions are also described with more wheels and more motors.

A safety trampoline, including a trampoline frame, trampoline supporting legs, a jumping mat, springs and an elastic protective sleeve, wherein the jumping mat is connected to the trampoline frame through the springs; a periphery of the jumping mat is connected to connecting rings; the elastic protective sleeve is ring-shaped; a plurality of net holes are formed at a first end of the elastic protective sleeve; the connecting rings pass through the plurality of net holes to clamp the elastic protective sleeve between the springs and the jumping mat; and a second end of the elastic protective sleeve is turned to a bottom of the trampoline frame and an edge thereof is tied to cover upper parts of the springs. Through an arrangement of the elastic protective sleeve, the elastic protective sleeve and the jumping mat, or the elastic protective sleeve, the jumping mat and a trampoline pad are integrally connected.

An exercise machine may include a frame, a resistance mechanism supported by the frame, first and second pull cables supported by the frame and linked to the resistance mechanism, a power rack attached to the frame, first and second handles selectively attachable to the first and second pull cable, and first and second pulleys. The power rack includes upright posts configured to have barbell holders adjustably attached thereto such that the barbell holders are configured to be adjusted in various positions between highest positions and lowest positions on the upright posts. The pulleys are configured to selectively receive the pull cables to enable the pull cables to be selectively attached to a barbell to assist or hinder a user in lifting the barbell in a combined cableand free weight workout, the pull cables decoupled from the pulleys for cable workouts.

A shoulder strengthening apparatus includes a base, a shaft having a distal end portion and a proximal end portion pivotably coupled to the base, a hand rest coupled to the distal end portion of the shaft such that the hand rest is configured to move with the shaft relative to the base, and a resistance mechanism configured to restrict movement of the shaft relative to the base.

An exercise machine resistance selection system for efficiently and easily adjusting a resistance force applied against movement of a carriage in at least one direction. An exercise machine includes a frame having at least one rail and a carriage movably connected to the at least one rail. A biasing member is selectively and removably connected to the carriage by a first catch member, with the first catch member being adjustable between an engaged position in which the first catch member is adapted to engage with the biasing member to impart a resistance force against movement of the carriage and a disengaged position in which the first catch member is adapted to release biasing member. A first retaining member is adapted to retain the biasing member in place below the carriage when the biasing member is released from the first catch member.

An exercise device with controllable training modes includes a base, a first exercise mechanism, a second exercise mechanism, and an operating mechanism. The first exercise mechanism has a first gear member. The second exercise mechanism has a second gear member. The operating mechanism has a third gear member. When the third gear member is at a first position, the third gear member meshes with the first gear member and the second gear member to form a linked state, so that the first exercise mechanism and the second exercise mechanism are operatively linked and coupled and swing in opposite directions. When the third gear member is at a second position, the third gear member is disengaged from either the first gear member or the second gear member or both to form a free state, so that the first exercise mechanism and the second exercise mechanism individually swing.

An exercise device with a base on a support surface and a user platform. One end of a support post is axially mounted to the base and the other end is pivotally mounted to the platform. The platform pivots with the post in a horizontal plane parallel to the support surface and pivots in a vertical plane perpendicular to the support surface. A resistance element having one end mounted to the support post and the other end to the base is provided to control the velocity and angle of pivot of the platform in the horizontal plane. A resistance element having one end mounted to the base and the other end to platform to control the velocity and angle of pivot of the platform in the vertical plane. The user stands on the platform and performs exercise motions to propel the platform in the horizontal plane and the vertical plane.

A volleyball training apparatus has a laterally extending arm supported on a riser. A resilient member such as a spring is operably connected within the arm. The resilient member is connected to a flexible connector, such as a cable, that is connected to a volleyball. A series of spacers retains the volleyball away from the rigid arm. The height of the arm may be adjustable to locate the volleyball at a desired height. After a user strikes the volleyball, the volleyball is displaced from its original static position, but quickly is snapped back into the static position by the resilient member pulling the volleyball toward the arm against the spacers.