An adjustable carriage assembly is configured to be mounted on a frame member of a weight rack and includes a locking structure for locking the carriage assembly in place on the frame member. The carriage assembly may include a moveable carriage with a plurality of rollers that engage the frame member, as well as one or more handles for gripping to adjust the position of the carriage assembly and a connection structure for connection of an implement or accessory. Various implements and accessories can be connected to or used in connection with the carriage assembly, including various weightlifting implements and accessories that are pivotably connected to the carriage assembly.

A weight arm assembly for use with a weight lifting rack is provided, the weight arm assembly including a mounting bracket configured to be attached to a vertical surface in a fixed position, an arm mount configured to be coupled to the mounting bracket so as to be pivotable about a first axis, a stop member coupled to the arm mount and configured to move between an engaged position to prevent pivoting of the arm mount through interaction with the mounting bracket, and a disengaged position to allow pivoting of the arm mount, and a weight arm configured to be coupled to the arm mount, proximate a first end of the weight arm, so as to be pivotable about a second axis substantially orthogonal to the first axis.

A resistance component configured for imparting a resistive force to a connected exercise component is provided. The device includes a frame pivotally supporting a selection arm which has a weight operatively connected to the selection arm by a pin arm. The weight imparts a force resisting rotation of the selection arm by a flexible member engaged with the exercise component. Adjusting the engagement of one end of the pin arm to an arched engagement path along the selection arm adjusts mechanical advantage and the resistive force.

An adjustable carriage assembly is configured to be mounted on a frame member of a weight rack and includes a moveable carriage with a plurality of rollers that engage the frame member, as well as a connection structure for connection of an articulating implement. A releasable pin is mounted on the carriage proximate to a rear of the carriage and has an arm configured for engagement to move the releasable pin. The releasable pin is moveable by axial translation between a locked position and an unlocked position to selectively engage the frame member to lock the carriage in position or permit movement of the carriage. A removable pin may be removably received through a pin hole in the carriage to extend through the passage in a direction perpendicular to a direction of axial translation of the releasable pin, to engage the frame member to prevent movement of the carriage.

Apparatus, systems, and methods for executing a tire flip weight lifting exercise. The disclosed apparatus includes a chassis and a tire assembly that is lifted and flipped during the exercise. The tire assembly includes a support bar that extends through a tire. The tire assembly also includes bearing assemblies that engage arms of a torsion bar that is pivotable with respect to the chassis to provide for safe and controlled movement of the tire assembly during the lifting exercise. When the lift is completed, rollers engage the tire assembly so that the tire assembly can roll back to the starting position at least in part due to the force of gravity.

An abdominal twist exercise device includes a device frame, front and rear rotational axles, a main handle bar, a rotation converter, an adjustable gear, a disengaging lever, a weight, a weight bar, a support rail, a safety handle bar, rotation counters, and a user platform, such that when the main handle bar rotates to one side, the user platform rotates to an opposing side. A rotation converter can include a front chain sprocket, an intermediate rotational axle, an intermediate chain sprocket, a roller chain, an intermediate gear, a rear gear; or a front belt sprocket, a rear belt sprocket, and a twisted belt, connecting the sprockets. Optionally, the front and rear axles can be telescoping.

A weight training apparatus includes a telescoping pivot arm comprised of a concentric arrangement of an outer tube and an inner tube and configured to pivot about an axis and receive a weight at a predetermined position. The weight training apparatus further includes an actuator attached to the telescoping pivot arm and configured to cause relative motion between the inner tube and the outer tube to change a length between the predetermined position and the axis. The weight training apparatus further includes a sensor configured to output a signal indicative of an angular position of the telescoping pivot arm about the axis and a controller programmed to operate the actuator to cause the length to change based on the signal to achieve a target resistance profile.

A workout machine adapted to be used with a smart device with built-in accelerometers and an app. It has a deck movable relative to its base and a lifting gear assembly operationally using a cable via a pulley to a lifting handle. A user location pivot arm is fixed to the deck, and a screen stand extends from the deck, where the user location pivot arm and screen stand are pivotably attached to a screen platform that can hold the smart device during a workout. The user's position on the deck can indicate the resistance of the exercise based on a percentage of the user's own weight as lifted with each repetition. The fulcrum concept combined with a user location feature allow an app of the smart device to support and analyze a workout.

The present invention is a horizontal rowing machine having a frame with a removable seat, adjustably mounted on the frame and an adjustable chest pad. The present invention has angled foot plates. The foot plates enable the user to use the machine in various positions. The present invention has two fixed multi-grip handles with 8 fixed hand positions and 6 positions on which to attach swivel handles. The swivel handles allow for a more natural and free form rowing movement. Maximal adjustability of all aspects of the machine allow for a more optimal and beneficial training exercise for any user, regardless of body size. The user can lift a desired weight by pulling the handles.

A resistance component configured for imparting a resistive force to a connected exercise component is provided. The device includes a frame pivotally supporting a selection arm which has a weight operatively connected to the selection arm by a pin arm. The weight imparts a force resisting rotation of the selection arm by a flexible member engaged with the exercise component. Adjusting the engagement of one end of the pin arm to an arched engagement path along the selection arm adjusts mechanical advantage and the resistive force.